Auto-sync from SVN revision 64696

Packages/com.unity.animation.rigging/.signature

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Packages/com.unity.animation.rigging/CHANGELOG.md

@@ -0,0 +1,208 @@
+# Changelog
+All notable changes to this package will be documented in this file.
+
+## [1.3.0] - 2023-01-30
+- Added the `TransformHandle`'s function `GetLocalToParentMatrix` to get the matrix of an animation stream transform in local space.
+- Added the `TransformHandle`'s function `GetLocalToWorldMatrix` to get the matrix of an animation stream transform in world space.
+- Fixed handling negative scale in the `MultiAimConstraintJob` (case 1366549).
+- Fixed transforms in animator hierarchy, but not children of avatar root not resolving properly (case 1373387).
+- Fixed MultiAimConstraint evaluation with a world up axis (UM-1936).
+- Fixed crash when calling `RigBuilder.Build` by preventing rebuilding the PlayableGraph when in a preview context (case UUM-8599).
+- Fixed an issue where a misplaced `BoneHandles.shader` shader would cause the Scene View's Orientation Overlay to no longer render (case UUM-20874).
+
+## [1.2.0] - 2021-12-08
+- Updated package icons (case 1361823).
+- Fixed BoneRenderer to refresh bones rendered in viewport on a mouse drag and drop event (case 1361819).
+- Fixed potential performance issue with rig effectors when used in a deep hierarchy.
+- Fixed NullReferenceException when previewing animation and layers were not initialized in `RigBuilder.StartPreview` (case 1367857).
+- Added the function RigBuilder.SyncLayers to manually update rigs and constraints prior to PlayableGraph evaluation.
+- Added the function RigBuilder.Evaluate(float) to manually update and evaluate the RigBuilder.
+- Added the function RigBuilder.Build(PlayableGraph) to build the RigBuilder Playable nodes in an external PlayableGraph.
+- Added effector visuals for auto setup of Two-Bone IK.
+- Correctly positioned effectors for auto setup of Two-Bone IK.
+
+## [1.1.1] - 2021-08-23
+### Patch Update of *Animation Rigging*.
+- Added missing tooltips to components (case 1265274).
+- Labels on components now support localization in supported regions.
+- Upgraded Animation Rigging overlay toolbox to use new Unity overlays.
+
+## [1.1.0] - 2021-04-09
+### Patch Update of *Animation Rigging*.
+- Fixed Auto Setup on TwoBoneIK throwing an ArgumentNullException instead of a warning message.
+- Fixed MultiReferential constraint not writing driver transform to stream.
+- Added exceptions in ReadWriteTransformHandle and ReadOnlyTransformHandle to cover invalid Transform references (case 1275002).
+- Added functions ConstructConstraintDataPropertyName and ConstructCustomPropertyName to ConstraintsUtils public API.
+- Fixed Gizmo icons reimporting when switching platforms.
+- Added missing icon to TwistChainConstraint.
+- Built-in RigConstraint components now support multi-object editing in the Inspector.
+- Fixed bug causing multi-target constraints to add a new target simply by viewing them in the Inspector.
+- Fixed collapsing Source Objects and Settings foldouts in the Inspector going on the undo stack.
+	- Appearance of foldout groups now matches other Unity components.
+- Appearance of WeightedTransformArray in the Inspector now matches default array control.
+	- Header now supports dragging and dropping Transforms.
+- Validate constraint weights and source object weights are within supported range when deserializing built-in constraints in the Editor.
+- Improvements to help when creating custom constraints:
+    - RigConstraint m_Data field no longer displays nested under a foldout in the Inspector by default.
+    - RigConstraint.OnValidate() is now overridable in sub-classes.
+	- Added WeightedTransformArray.OnValidate().
+	- Added default PropertyDrawer for WeightedTransformArray that supports multi-select.
+	- Added optional WeightRangeAttribute. It should now be used in conjunction with WeightedTransformArray fields instead of RangeAttribute to specify the control should use a slider.
+- Updated samples to standard Samples/PackageName/Version/SampleName structure (case 1276329).
+- Fixed BoneRenderer and RigEffectors not respecting layer visibility flags (case 1238204).
+- Added support for nested struct properties tagged with the SyncSceneToStream attribute.
+- Fixed MultiParent and MultiPosition constraints evaluating with an offset when root game object scale is not one (case 1246893).
+- Fixed unnormalized rotation in TwoBoneIK constraint when hint weight is lower than one (case 1311769).
+- Removed editor only conditional compilation on serialized data (case 1324071).
+- Updated Burst to version 1.4.1.
+
+## [1.0.3] - 2020-08-21
+### Patch Update of *Animation Rigging*.
+- Updated Burst to version 1.3.4.
+
+## [1.0.2] - 2020-07-02
+### Patch Update of *Animation Rigging*.
+- Updated minimum unity release to 2020.2.0a16.
+
+## [1.0.1] - 2020-06-26
+### Verified release of *Animation Rigging*.
+- Added world up vector options for MultiAim.
+- Removed use of `latest` keyword in links to documentation (case 1233972).
+- Removed error log in CustomOverlayAttribute (case 1253862).
+- Disabled alt-picking on BoneRenderer in Scene View.  [AAA-102]
+- Fixed unecessary GC Alloc in RigBuilder.Update().  [AAA-103]
+- Fixed TwoBoneIK inverse constraint not taking dynamic bone lengths into account.
+- Fixed ChainIK not applying chain rotation weight properly.
+
+## [0.3.3] - 2020-03-06
+### Patch Update of *Animation Rigging*.
+- Improved RigEffector picking when using custom shapes.
+- Improved RigEffector hover feedback when shape does not have line geometry.
+- Adjusted MultiAim calculations to prevent rolling effects (case 1215736).
+- Removed cached 'LimbLengths' in TwoBoneIKConstraintJob which lets users modify bone lengths dynamically.  [AAA-97]
+- Fixed erroneous link to TwistChain constraint documentation in the ConstraintSamples readme.  [AAA-95]
+- Fixed add and remove operations in ReorderableList when constraint is nested in prefab.  [AAA-98]
+- Fixed undo operations in ReorderableList.  [AAA-98]
+- Removed uses of Resources.Load in Runtime and Editor assemblies.
+
+## [0.3.2] - 2020-01-23
+### Patch Update of *Animation Rigging*.
+- Updated documentation.
+
+## [0.3.1] - 2020-01-14
+### Patch Update of *Animation Rigging*.
+- Removed unecessary files BakeUtils.cs.orig and BakeUtils.cs.orig.meta.
+- Updated Burst to version 1.2.0-preview.12.
+
+## [0.3.0] - 2019-10-18
+### Patch Update of *Animation Rigging*.
+- Added support for bidirectional-baking to existing constraints.
+
+## [0.2.5] - 2019-11-20
+### Patch Update of *Animation Rigging*.
+- Adjusted calculations on MultiAim constrained axes. [AAA-86]
+
+## [0.2.4] - 2019-11-06
+### Patch Update of *Animation Rigging*.
+- Added support for scene visibility and picking flags on BoneRenderer component and Rig effectors. [AAA-65]
+- Fixed preview of disabled RigBuilder component in Animation Window and Timeline. [AAA-37]
+- Fixed constrained axes in MultiAim not properly constraining local rotation. [AAA-86]
+- Updated Animation Rigging samples and added a Readme file.
+
+## [0.2.3] - 2019-07-24
+### Patch Update of *Animation Rigging*.
+- Increased the priority index of AnimationPlayableOutput in order for Animation Rigging to always evaluate after State Machine and Timeline.
+- Fixed NullReferenceException in RigEffectorRenderer.
+- Fixed TwoBoneIK evaluation when used on straight limbs by using hint target to define a valid IK plane.
+- Fixed Multi-Parent, Multi-Rotation and Multi-Aim constraints to perform order independent rotation blending. [AAA-17]
+- Fixed RigTransform component to work on all objects of an animator hierarchy not only specific to sub rig hierarchies. [AAA-18] 
+- Fixed crash in RigSyncSceneToStreamJob when rebuilding jobs after having deleted all valid rigs (case 1167624).
+- Fixed undo/redo issues with Rig Effectors set on Prefab instances (case 1162002).
+- Fixed missing links to package documentation for MonoBehaviour scripts. [AAA-16]
+- Added Vector3IntProperty and Vector3BoolProperty helper structs.
+- Updated Burst to version 1.1.1.
+
+## [0.2.2] - 2019-04-29
+### Patch Update of *Animation Rigging*.
+- Added Rig Effector visualization toolkit for Animation Rigging.
+- Fixed Animation Rigging align operations not using the same selection order in Scene View and Hierarchy.
+- Updated Burst to version 1.0.4.
+
+## [0.2.1] - 2019-02-28
+### Patch Update of *Animation Rigging*.
+- Added Burst support to existing constraints.  The Animation Rigging package now depends on com.unity.burst.
+- Upgraded weighted transform arrays in order for weights to be animatable.  The following constraints were modified and will require a manual update:
+	- MultiAimConstraint
+	- MultiParentConstraint
+	- MultiPositionConstraint
+	- MultiReferentialConstraint
+	- TwistCorrection
+
+## [0.2.0] - 2019-02-12
+
+### Keyframing support for *Animation Rigging*.
+- Changed RigBuilder to build and update the PlayableGraph for Animation Window.
+- Added attribute [NotKeyable] to properties that shouldn't be animated.
+- Removed 'sync' property flag on transform fields for constraints. Syncing scene data to the animation stream is now performed by marking a constraint field with [SyncSceneToStream].
+- Fixed issue where constraint parameters were evaluated one frame late when animated.
+- Added attribute [DisallowMultipleComponent] to constraints to avoid use of multiple constraints per Game Object.
+- Updated constraints to use new AnimationStream API to reduce engine to script conversion.
+- Added IAnimatableProperty helpers for Bool/Int/Float/Vector2/Vector3/Vector4 properties. 
+- Added ReadOnlyTransformHandle and ReadWriteTransformHandle.
+
+## [0.1.4] - 2018-12-21
+
+### Patch Update of *Animation Rigging*.
+- Fixed onSceneGUIDelegate deprecation warning in BoneRenderUtils
+
+## [0.1.3] - 2018-12-21
+
+### Patch Update of *Animation Rigging*.
+- Fixed stale bone rendering in prefab isolation view.
+- Updated constraints to have a transform sync scene to stream toggle only on inputs.
+- Fixed Twist Correction component to have twist nodes with weight varying between [-1, 1]
+- Added Maintain Offset dropdown to TwoBoneIK, ChainIK, Blend and Multi-Parent constraints
+- Added Rig Transform component in order to tag extra objects not specified by constraints to have an influence in the animation stream
+- Updated documentation and samples to reflect component changes
+
+## [0.1.2] - 2018-11-29
+
+### Patch Update of *Animation Rigging*.
+- Added constraint examples to Sample folder (Samples/ConstraintExamples/AnimationRiggingExamples.unitypackage)
+- Fixed links in documentation
+- Updated package description
+
+## [0.1.1] - 2018-11-26
+
+### Patch Update of *Animation Rigging*.
+- Improved blend constraint UI layout
+- Fixed jittering of DampedTransform when constraint weight was in between 0 and 1
+- Made generic interface of Get/Set AnimationJobCache functions
+- Added separate size parameters for bones and tripods in BoneRenderer.
+- Fixed NullReferenceException when deleting skeleton hierarchy while it's still being drawn by BoneRenderer.
+- Fixed Reset and Undo operations on BoneRenderer not updating skeleton rendering.
+- Reworked multi rig playable graph setup to have one initial scene to stream sync layer followed by subsequent rigs
+- Prune duplicate rig references prior to creating sync to stream job
+- Added passthrough conditions in animation jobs for proper stream values to be passed downstream when job weights are zero. Fixes a few major issues when character did not have a controller.
+- Fixed bug in ChainIK causing chain to not align to full extent when target is out of reach
+- Fixed TwoBoneIK bend normal strategy when limbs are collinear
+- Reworked AnimationJobData classes to be declared as structs in order for their serialized members to be keyable within the Animation Window. 
+- Renamed component section and menu item "Runtime Rigging" to "Animation Rigging"
+- Added check in SyncToStreamJob to make sure StreamHandle is still valid prior to reading it's values.
+- Adding first draft of package documentation.
+
+## [0.1.0] - 2018-11-01
+
+### This is the first release of *Animation Rigging*.
+### Added
+- RigBuilder component.
+- Rig component.
+- The following RuntimeRigConstraint components:
+	- BlendConstraint
+	- ChainIKConstraint
+	- MultiAimConstraint
+	- MultiParentConstraint
+	- MultiPositionConstraint
+	- MultiReferentialConstraint
+	- OverrideTransform
+	- TwistCorrection

Packages/com.unity.animation.rigging/CHANGELOG.md.meta

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Packages/com.unity.animation.rigging/DocCodeExamples.meta

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Packages/com.unity.animation.rigging/DocCodeExamples/CustomPlayableGraphEvaluator.cs

@@ -0,0 +1,40 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using UnityEngine.Playables;
+
+namespace DocCodeExamples
+{
+    /// <summary>
+    /// Custom evaluator that manually evaluates the PlayableGraph in LateUpdate.
+    /// </summary>
+    #region custom-playable-graph-evaluator
+    [RequireComponent(typeof(RigBuilder))]
+    public class CustomPlayableGraphEvaluator : MonoBehaviour
+    {
+        private RigBuilder m_RigBuilder;
+        private PlayableGraph m_PlayableGraph;
+
+        void OnEnable()
+        {
+            m_RigBuilder = GetComponent<RigBuilder>();
+            m_PlayableGraph = PlayableGraph.Create();
+            m_PlayableGraph.SetTimeUpdateMode(DirectorUpdateMode.Manual);
+
+            m_RigBuilder.Build(m_PlayableGraph);
+        }
+
+        void OnDisable()
+        {
+            if (m_PlayableGraph.IsValid())
+                m_PlayableGraph.Destroy();
+        }
+
+        void LateUpdate()
+        {
+            m_RigBuilder.UpdateLayers();
+            m_PlayableGraph.Evaluate(Time.deltaTime);
+            m_RigBuilder.LateUpdateLayers();
+        }
+    }
+    #endregion
+}

Packages/com.unity.render-pipelines.core/Tests/Editor/Volumes/VolumeComponentTests.cs.meta → Packages/com.unity.animation.rigging/DocCodeExamples/CustomPlayableGraphEvaluator.cs.meta

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 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Packages/com.unity.animation.rigging/DocCodeExamples/CustomRigBuilderEvaluator.cs

@@ -0,0 +1,35 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using UnityEngine.Playables;
+
+namespace DocCodeExamples
+{
+    /// <summary>
+    /// Custom Evaluator that manually evaluates the RigBuilder in LateUpdate.
+    /// </summary>
+    #region custom-rig-builder-evaluator
+    [RequireComponent(typeof(RigBuilder))]
+    public class CustomRigBuilderEvaluator : MonoBehaviour
+    {
+        private RigBuilder m_RigBuilder;
+
+        void OnEnable()
+        {
+            m_RigBuilder = GetComponent<RigBuilder>();
+
+            // Disable the RigBuilder and set its PlayableGraph to manual update mode
+            // to let the script evaluate it instead.
+            m_RigBuilder.enabled = false;
+            if (m_RigBuilder.Build())
+            {
+                m_RigBuilder.graph.SetTimeUpdateMode(DirectorUpdateMode.Manual);
+            }
+        }
+
+        void LateUpdate()
+        {
+            m_RigBuilder.Evaluate(Time.deltaTime);
+        }
+    }
+    #endregion
+}

Packages/com.unity.animation.rigging/DocCodeExamples/CustomRigBuilderEvaluator.cs.meta

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+timeCreated: 1636580728

Packages/com.unity.animation.rigging/DocCodeExamples/Unity.Animation.Rigging.DocCodeExamples.asmdef

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+{
+    "name": "Unity.Animation.Rigging.DocCodeExamples",
+    "rootNamespace": "",
+    "references": [
+        "Unity.Animation.Rigging"
+    ],
+    "includePlatforms": [],
+    "excludePlatforms": [],
+    "allowUnsafeCode": false,
+    "overrideReferences": true,
+    "precompiledReferences": [],
+    "autoReferenced": false,
+    "defineConstraints": [],
+    "versionDefines": [],
+    "noEngineReferences": false
+}

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Packages/com.unity.animation.rigging/Editor.meta

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Packages/com.unity.animation.rigging/Editor/AnimationRig.meta

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Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints.meta

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Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/BlendConstraintEditor.cs

@@ -0,0 +1,163 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(BlendConstraint))]
+    [CanEditMultipleObjects]
+    class BlendConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent sourceObjects = new GUIContent(CommonContent.sourceObjects.text);
+            public static readonly GUIContent sourceA = EditorGUIUtility.TrTextContent(
+                "Source A",
+                "The first source GameObject that influences the position and rotation of the Constrained Object."
+            );
+            public static readonly GUIContent sourceB = EditorGUIUtility.TrTextContent(
+                "Source B",
+                "The second source GameObject that influences the position and rotation of the Constrained Object."
+            );
+            public static readonly GUIContent settings = CommonContent.settings;
+            public static readonly GUIContent maintainOffset = CommonContent.maintainOffset;
+            public static readonly GUIContent blendPosition = EditorGUIUtility.TrTextContent(
+                "Blend A | B Position",
+                "If enabled, the constrained GameObject's position blends between those of Source A and Source B by the specified amount."
+            );
+            public static readonly GUIContent blendRotation = EditorGUIUtility.TrTextContent(
+                "Blend A | B Rotation",
+                "If enabled, the constrained GameObject's rotation blends between those of Source A and Source B by the specified amount."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_SourceA;
+        SerializedProperty m_SourceB;
+        SerializedProperty m_BlendPosition;
+        SerializedProperty m_BlendRotation;
+        SerializedProperty m_PositionWeight;
+        SerializedProperty m_RotationWeight;
+        SerializedProperty m_MaintainPositionOffsets;
+        SerializedProperty m_MaintainRotationOffsets;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<BlendConstraintEditor>();
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<BlendConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_SourceA = data.FindPropertyRelative("m_SourceA");
+            m_SourceB = data.FindPropertyRelative("m_SourceB");
+            m_BlendPosition = data.FindPropertyRelative("m_BlendPosition");
+            m_BlendRotation = data.FindPropertyRelative("m_BlendRotation");
+            m_PositionWeight = data.FindPropertyRelative("m_PositionWeight");
+            m_RotationWeight = data.FindPropertyRelative("m_RotationWeight");
+            m_MaintainPositionOffsets = data.FindPropertyRelative("m_MaintainPositionOffsets");
+            m_MaintainRotationOffsets = data.FindPropertyRelative("m_MaintainRotationOffsets");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.sourceObjects);
+            if (m_SourceObjectsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_SourceA, Content.sourceA);
+                EditorGUILayout.PropertyField(m_SourceB, Content.sourceB);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, Content.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+
+                MaintainOffsetHelper.DoDropdown(Content.maintainOffset, m_MaintainPositionOffsets, m_MaintainRotationOffsets);
+
+                EditorGUILayout.BeginHorizontal();
+                EditorGUILayout.PropertyField(m_BlendPosition, Content.blendPosition);
+                using (new EditorGUI.DisabledScope(!m_BlendPosition.boolValue))
+                    EditorGUILayout.PropertyField(m_PositionWeight, GUIContent.none);
+                EditorGUILayout.EndHorizontal();
+
+                EditorGUILayout.BeginHorizontal();
+                EditorGUILayout.PropertyField(m_BlendRotation, Content.blendRotation);
+                using (new EditorGUI.DisabledScope(!m_BlendRotation.boolValue))
+                    EditorGUILayout.PropertyField(m_RotationWeight, GUIContent.none);
+                EditorGUILayout.EndHorizontal();
+
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/BlendConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as BlendConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/BlendConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as BlendConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(BlendConstraint))]
+    class BlendConstraintBakeParameters : BakeParameters<BlendConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => false;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, BlendConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+            var sourceA = constraint.data.sourceObjectA;
+            var sourceB = constraint.data.sourceObjectB;
+
+            if (constraint.data.blendPosition)
+            {
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, sourceA, bindings);
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, sourceB, bindings);
+            }
+
+            if (constraint.data.blendRotation)
+            {
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, sourceA, bindings);
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, sourceB, bindings);
+            }
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, BlendConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+            var constrained = constraint.data.constrainedObject;
+
+            if (constraint.data.blendPosition)
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, constrained, bindings);
+
+            if(constraint.data.blendRotation)
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, constrained, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.render-pipelines.core/Tests/Editor/Volumes/VolumeComponentCopyPasteTests.cs.meta → Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/BlendConstraintEditor.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: ff5ab0e3d6cd4a5bab92dab9c63e8962
+guid: a8670d948642f1546a4835c189aea303
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/ChainIKConstraintEditor.cs

@@ -0,0 +1,156 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(ChainIKConstraint))]
+    [CanEditMultipleObjects]
+    class ChainIKConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent root = EditorGUIUtility.TrTextContent(
+                "Root",
+                "The root GameObject of the chain hierarchy."
+            );
+            public static readonly GUIContent tip = EditorGUIUtility.TrTextContent(
+                "Tip",
+                "The final GameObject of the chain hierarchy. It must be a descendant of the Root GameObject."
+            );
+            public static readonly GUIContent target = EditorGUIUtility.TrTextContent(
+                "Target",
+                "The GameObject that specifies the desired target transform for the chain's Tip."
+            );
+            public static readonly GUIContent sourceObjects = new GUIContent(CommonContent.sourceObjects.text);
+            public static readonly GUIContent chainRotationWeight = EditorGUIUtility.TrTextContent(
+                "Chain Rotation Weight",
+                "The weight of rotations applied throughout the chain."
+            );
+            public static readonly GUIContent tipRotationWeight = EditorGUIUtility.TrTextContent(
+                "Tip Rotation Weight",
+                "The weight of the rotation applied to the Tip."
+            );
+            public static readonly GUIContent maxIterations = EditorGUIUtility.TrTextContent(
+                "Max Iterations",
+                "The maximum number of solver iterations to perform to try to make the Tip reach the Target within the specified Tolerance threshold."
+            );
+            public static readonly GUIContent tolerance = EditorGUIUtility.TrTextContent(
+                "Tolerance",
+                "Distance tolerance between the Target and Tip GameObjects. " +
+                "The solver will finish its computation if the distance is less than this value at any point, even if Max Iterations has not been reached."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_Root;
+        SerializedProperty m_Tip;
+        SerializedProperty m_Target;
+        SerializedProperty m_ChainRotationWeight;
+        SerializedProperty m_TipRotationWeight;
+        SerializedProperty m_MaxIterations;
+        SerializedProperty m_Tolerance;
+        SerializedProperty m_MaintainTargetPositionOffset;
+        SerializedProperty m_MaintainTargetRotationOffset;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<ChainIKConstraintEditor>();
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<ChainIKConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_Root = data.FindPropertyRelative("m_Root");
+            m_Tip = data.FindPropertyRelative("m_Tip");
+            m_Target = data.FindPropertyRelative("m_Target");
+            m_ChainRotationWeight = data.FindPropertyRelative("m_ChainRotationWeight");
+            m_TipRotationWeight = data.FindPropertyRelative("m_TipRotationWeight");
+            m_MaxIterations = data.FindPropertyRelative("m_MaxIterations");
+            m_Tolerance = data.FindPropertyRelative("m_Tolerance");
+            m_MaintainTargetPositionOffset = data.FindPropertyRelative("m_MaintainTargetPositionOffset");
+            m_MaintainTargetRotationOffset = data.FindPropertyRelative("m_MaintainTargetRotationOffset");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_Root, Content.root);
+            EditorGUILayout.PropertyField(m_Tip, Content.tip);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.sourceObjects);
+            if (m_SourceObjectsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_Target, Content.target);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                MaintainOffsetHelper.DoDropdown(CommonContent.maintainIKTargetOffset, m_MaintainTargetPositionOffset, m_MaintainTargetRotationOffset);
+                EditorGUILayout.PropertyField(m_ChainRotationWeight, Content.chainRotationWeight);
+                EditorGUILayout.PropertyField(m_TipRotationWeight, Content.tipRotationWeight);
+                EditorGUILayout.PropertyField(m_MaxIterations, Content.maxIterations);
+                EditorGUILayout.PropertyField(m_Tolerance, Content.tolerance);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/ChainIKConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as ChainIKConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/ChainIKConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as ChainIKConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(ChainIKConstraint))]
+    class ChainIKConstraintBakeParameters : BakeParameters<ChainIKConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => false;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, ChainIKConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.target, bindings);
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, ChainIKConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            var root = constraint.data.root;
+            var tip = constraint.data.tip;
+
+            var tmp = tip;
+            while (tmp != root)
+            {
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, tmp, bindings);
+                tmp = tmp.parent;
+            }
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, root, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.render-pipelines.core/Tests/Editor/Volumes/VolumeComponentVisibilityTests.cs.meta → Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/ChainIKConstraintEditor.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 81dd1b9facda41f9a09fb997d6e64670
+guid: 63110210264e2ee4da7389733e5958ae
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/DampedTransformEditor.cs

@@ -0,0 +1,122 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(DampedTransform))]
+    [CanEditMultipleObjects]
+    class DampedTransformEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent source = EditorGUIUtility.TrTextContent(
+                "Source",
+                "The GameObject that influences the Constrained Object's transform."
+            );
+            public static readonly GUIContent dampPosition = EditorGUIUtility.TrTextContent(
+                "Damp Position",
+                "The weight of positional damping to apply to the Constrained Object."
+            );
+            public static readonly GUIContent dampRotation = EditorGUIUtility.TrTextContent(
+                "Damp Rotation",
+                "The weight of rotational damping to apply to the Constrained Object."
+            );
+            public static readonly GUIContent maintainAim = EditorGUIUtility.TrTextContent(
+                "Maintain Aim",
+                "Specifies whether to maintain the initial rotation offset between the Constrained Object and the Source Object."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_Source;
+        SerializedProperty m_DampPosition;
+        SerializedProperty m_DampRotation;
+        SerializedProperty m_MaintainAim;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<DampedTransformEditor>();
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<DampedTransformEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_Source = data.FindPropertyRelative("m_Source");
+            m_DampPosition = data.FindPropertyRelative("m_DampPosition");
+            m_DampRotation = data.FindPropertyRelative("m_DampRotation");
+            m_MaintainAim = data.FindPropertyRelative("m_MaintainAim");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.source);
+            if (m_SourceObjectsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_Source, Content.source);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_DampPosition, Content.dampPosition);
+                EditorGUILayout.PropertyField(m_DampRotation, Content.dampRotation);
+                EditorGUILayout.PropertyField(m_MaintainAim, Content.maintainAim);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/DampedTransform/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as DampedTransform;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/DampedTransform/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as DampedTransform;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(DampedTransform))]
+    class DampedTransformBakeParameters : BakeParameters<DampedTransform>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => false;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, DampedTransform constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.sourceObject, bindings);
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, DampedTransform constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.render-pipelines.core/Tests/Editor/Volumes/VolumeComponentEditorSupportedOnTests.cs.meta → Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/DampedTransformEditor.cs.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: 172ced047a38440389ff238ad1d347ce
+guid: 99a3cbe2e69614541bdf264c5e905f48
 MonoImporter:
   externalObjects: {}
   serializedVersion: 2

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiAimConstraintEditor.cs

@@ -0,0 +1,197 @@
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(MultiAimConstraint))]
+    [CanEditMultipleObjects]
+    class MultiAimConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent[] axisLabels = new []{ "X", "-X", "Y", "-Y", "Z", "-Z" }
+                .Select(c => new GUIContent(c))
+                .ToArray();
+            public static readonly GUIContent aimAxis = EditorGUIUtility.TrTextContent(
+                "Aim Axis",
+                "Specifies the local aim axis of the Constrained Object to use in order to orient its forward direction to the Source Objects."
+            );
+            public static readonly GUIContent upAxis = EditorGUIUtility.TrTextContent(
+                "Up Axis",
+                "Specifies the local up axis of the Constrained Object to use in order to orient its upward direction (i.e., roll orientation)."
+            );
+            public static readonly GUIContent worldUpType = EditorGUIUtility.TrTextContent(
+                "World Up Type",
+                "Specifies which mode to use to stabilize the upward direction (i.e., roll orientation) of the Constrained Object."
+            );
+            public static readonly GUIContent worldUpAxis = EditorGUIUtility.TrTextContent(
+                "World Up Axis",
+                "A vector in some reference frame that is used to stabilize the upward direction of the Constrained Object. " +
+                "This value is used when World Up Type is either Vector or Object Rotation Up."
+            );
+            public static readonly GUIContent worldUpObject = EditorGUIUtility.TrTextContent(
+                "World Up Object",
+                "A GameObject used as a reference frame for World Up Axis. " +
+                "This value is used when World Up Type is either Object Up or Object Rotation Up."
+            );
+            public static readonly GUIContent sourceObjects = CommonContent.sourceObjectsWeightedRotation;
+            public static readonly GUIContent settings = CommonContent.settings;
+            public static readonly GUIContent maintainOffset = CommonContent.maintainRotationOffset;
+            public static readonly GUIContent minLimit = EditorGUIUtility.TrTextContent(
+                "Min Limit",
+                "Clamps the minimum rotation that may be applied about any of the constrained axes of rotation."
+            );
+            public static readonly GUIContent maxLimit = EditorGUIUtility.TrTextContent(
+                "Max Limit",
+                "Clamps the maximum rotation that may be applied about any of the constrained axes of rotation."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_AimAxis;
+        SerializedProperty m_UpAxis;
+        SerializedProperty m_WorldUpType;
+        SerializedProperty m_WorldUpAxis;
+        SerializedProperty m_WorldUpObject;
+        SerializedProperty m_SourceObjects;
+        SerializedProperty m_MaintainOffset;
+        SerializedProperty m_Offset;
+        SerializedProperty m_ConstrainedAxes;
+        SerializedProperty m_MinLimit;
+        SerializedProperty m_MaxLimit;
+
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<MultiAimConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_AimAxis = data.FindPropertyRelative("m_AimAxis");
+            m_UpAxis = data.FindPropertyRelative("m_UpAxis");
+            m_WorldUpType = data.FindPropertyRelative("m_WorldUpType");
+            m_WorldUpAxis = data.FindPropertyRelative("m_WorldUpAxis");
+            m_WorldUpObject = data.FindPropertyRelative("m_WorldUpObject");
+            m_SourceObjects = data.FindPropertyRelative("m_SourceObjects");
+            m_MaintainOffset = data.FindPropertyRelative("m_MaintainOffset");
+            m_Offset = data.FindPropertyRelative("m_Offset");
+            m_ConstrainedAxes = data.FindPropertyRelative("m_ConstrainedAxes");
+            m_MinLimit = data.FindPropertyRelative("m_MinLimit");
+            m_MaxLimit = data.FindPropertyRelative("m_MaxLimit");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+
+            ++EditorGUI.indentLevel;
+            DoAxisField(m_AimAxis, Content.aimAxis);
+            DoAxisField(m_UpAxis, Content.upAxis);
+            --EditorGUI.indentLevel;
+
+            EditorGUILayout.PropertyField(m_WorldUpType, Content.worldUpType);
+
+            var worldUpType = (MultiAimConstraintData.WorldUpType)m_WorldUpType.intValue;
+
+            ++EditorGUI.indentLevel;
+            using (new EditorGUI.DisabledGroupScope(worldUpType != MultiAimConstraintData.WorldUpType.ObjectRotationUp && worldUpType != MultiAimConstraintData.WorldUpType.Vector))
+            {
+                DoAxisField(m_WorldUpAxis, Content.worldUpAxis);
+            }
+            using (new EditorGUI.DisabledGroupScope(worldUpType != MultiAimConstraintData.WorldUpType.ObjectUp && worldUpType != MultiAimConstraintData.WorldUpType.ObjectRotationUp))
+            {
+                EditorGUILayout.PropertyField(m_WorldUpObject, Content.worldUpObject);
+            }
+            --EditorGUI.indentLevel;
+
+            EditorGUILayout.PropertyField(m_SourceObjects, Content.sourceObjects);
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, Content.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_MaintainOffset, Content.maintainOffset);
+                EditorGUILayout.PropertyField(m_Offset, CommonContent.offsetRotation);
+                EditorGUILayout.PropertyField(m_ConstrainedAxes, CommonContent.constrainedAxesRotation);
+                EditorGUILayout.PropertyField(m_MinLimit, Content.minLimit);
+                EditorGUILayout.PropertyField(m_MaxLimit, Content.maxLimit);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        static void DoAxisField(SerializedProperty property, GUIContent label)
+        {
+            var rect = EditorGUILayout.GetControlRect();
+            EditorGUI.BeginProperty(rect, label, property);
+            EditorGUI.BeginChangeCheck();
+            var newValue = EditorGUI.Popup(rect, label, property.intValue, Content.axisLabels);
+            if (EditorGUI.EndChangeCheck())
+                property.intValue = newValue;
+            EditorGUI.EndProperty();
+        }
+
+        [MenuItem("CONTEXT/MultiAimConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as MultiAimConstraint;
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiAimConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as MultiAimConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiAimConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/MultiAimConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as MultiAimConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(MultiAimConstraint))]
+    class MultiAimConstraintBakeParameters : BakeParameters<MultiAimConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, MultiAimConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            for (int i = 0; i < constraint.data.sourceObjects.Count; ++i)
+            {
+                var sourceObject = constraint.data.sourceObjects[i];
+
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, sourceObject.transform, bindings);
+                EditorCurveBindingUtils.CollectPropertyBindings(rigBuilder.transform, constraint, ((IMultiAimConstraintData)constraint.data).sourceObjectsProperty + ".m_Item" + i + ".weight", bindings);
+            }
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, MultiAimConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiAimConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9a96277d4d9d2d04181fc5ce44119fdf
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiParentConstraintEditor.cs

@@ -0,0 +1,121 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using System.Collections.Generic;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(MultiParentConstraint))]
+    [CanEditMultipleObjects]
+    class MultiParentConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent constrainedPositionAxes = new GUIContent(
+                L10n.Tr("Constrained Position Axes"),
+                CommonContent.constrainedAxesPosition.tooltip
+            );
+            public static readonly GUIContent constrainedRotationAxes = new GUIContent(
+                L10n.Tr("Constrained Rotation Axes"),
+                CommonContent.constrainedAxesRotation.tooltip
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_ConstrainedPositionAxes;
+        SerializedProperty m_ConstrainedRotationAxes;
+        SerializedProperty m_SourceObjects;
+        SerializedProperty m_MaintainPositionOffset;
+        SerializedProperty m_MaintainRotationOffset;
+
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<MultiParentConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_ConstrainedPositionAxes = data.FindPropertyRelative("m_ConstrainedPositionAxes");
+            m_ConstrainedRotationAxes = data.FindPropertyRelative("m_ConstrainedRotationAxes");
+            m_SourceObjects = data.FindPropertyRelative("m_SourceObjects");
+            m_MaintainPositionOffset = data.FindPropertyRelative("m_MaintainPositionOffset");
+            m_MaintainRotationOffset = data.FindPropertyRelative("m_MaintainRotationOffset");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+            EditorGUILayout.PropertyField(m_SourceObjects, CommonContent.sourceObjects);
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                MaintainOffsetHelper.DoDropdown(CommonContent.maintainOffset, m_MaintainPositionOffset, m_MaintainRotationOffset);
+                EditorGUILayout.PropertyField(m_ConstrainedPositionAxes, Content.constrainedPositionAxes);
+                EditorGUILayout.PropertyField(m_ConstrainedRotationAxes, Content.constrainedRotationAxes);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/MultiParentConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as MultiParentConstraint;
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiParentConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as MultiParentConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiParentConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/MultiParentConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as MultiParentConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(MultiParentConstraint))]
+    class MultiParentConstraintParameters : BakeParameters<MultiParentConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, MultiParentConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            for (int i = 0; i < constraint.data.sourceObjects.Count; ++i)
+            {
+                var sourceObject = constraint.data.sourceObjects[i];
+
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, sourceObject.transform, bindings);
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, sourceObject.transform, bindings);
+                EditorCurveBindingUtils.CollectPropertyBindings(rigBuilder.transform, constraint, ((IMultiParentConstraintData)constraint.data).sourceObjectsProperty + ".m_Item" + i + ".weight", bindings);
+            }
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, MultiParentConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+            EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiParentConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
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+guid: 2326ba71c8dbcba4ea941bf20e7e1bbc
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiPositionConstraintEditor.cs

@@ -0,0 +1,118 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using System.Collections.Generic;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(MultiPositionConstraint))]
+    [CanEditMultipleObjects]
+    class MultiPositionConstraintEditor : Editor
+    {
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_ConstrainedAxes;
+        SerializedProperty m_SourceObjects;
+        SerializedProperty m_MaintainOffset;
+        SerializedProperty m_Offset;
+
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<MultiPositionConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_ConstrainedAxes = data.FindPropertyRelative("m_ConstrainedAxes");
+            m_SourceObjects = data.FindPropertyRelative("m_SourceObjects");
+            m_MaintainOffset = data.FindPropertyRelative("m_MaintainOffset");
+            m_Offset = data.FindPropertyRelative("m_Offset");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+            EditorGUILayout.PropertyField(m_ConstrainedAxes, CommonContent.constrainedAxesPosition);
+            EditorGUILayout.PropertyField(m_SourceObjects, CommonContent.sourceObjectsWeightedPosition);
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_MaintainOffset, CommonContent.maintainPositionOffset);
+                EditorGUILayout.PropertyField(m_Offset, CommonContent.offsetPosition);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/MultiPositionConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as MultiPositionConstraint;
+
+            var axesMask = new Vector3(
+                System.Convert.ToSingle(constraint.data.constrainedXAxis),
+                System.Convert.ToSingle(constraint.data.constrainedYAxis),
+                System.Convert.ToSingle(constraint.data.constrainedZAxis));
+
+            if (Vector3.Dot(axesMask, axesMask) < 3f)
+            {
+                Debug.LogWarning("Multi-Position constraint with one or more Constrained Axes toggled off may lose precision when transferring its motion to constraint.");
+            }
+
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiPositionConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as MultiPositionConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiPositionConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/MultiPositionConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as MultiPositionConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(MultiPositionConstraint))]
+    class MultiPositionConstraintBakeParameters : BakeParameters<MultiPositionConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, MultiPositionConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            for (int i = 0; i < constraint.data.sourceObjects.Count; ++i)
+            {
+                var sourceObject = constraint.data.sourceObjects[i];
+
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, sourceObject.transform, bindings);
+                EditorCurveBindingUtils.CollectPropertyBindings(rigBuilder.transform, constraint, ((IMultiPositionConstraintData)constraint.data).sourceObjectsProperty + ".m_Item" + i + ".weight", bindings);
+            }
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, MultiPositionConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiPositionConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
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+guid: 6ca0517db96fdfc41b4230a34d84b37c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiReferentialConstraintEditor.cs

@@ -0,0 +1,132 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(MultiReferentialConstraint))]
+    [CanEditMultipleObjects]
+    class MultiReferentialConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent driving = EditorGUIUtility.TrTextContent(
+                "Driving",
+                "An object from the list of Referenced Objects, whose motion drives that of all other Referenced Objects."
+            );
+            public static readonly GUIContent referenceObjects = EditorGUIUtility.TrTextContent(
+                "Reference Objects",
+                "A list of GameObjects to be driven by the specified Driving object."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_Driver;
+        SerializedProperty m_SourceObjects;
+        SerializedProperty m_SourceObjectsSize;
+
+        GUIContent[] m_DrivingLabels = Array.Empty<GUIContent>();
+        int m_PreviousSourceSize;
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_Driver = data.FindPropertyRelative("m_Driver");
+            m_SourceObjects = data.FindPropertyRelative("m_SourceObjects");
+            m_SourceObjectsSize = m_SourceObjects.FindPropertyRelative("Array.size");
+            m_PreviousSourceSize = m_SourceObjectsSize.intValue;
+
+            UpdateDrivingLabels();
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+
+            Rect rect = EditorGUILayout.GetControlRect();
+            EditorGUI.BeginProperty(rect, Content.driving, m_Driver);
+            EditorGUI.BeginChangeCheck();
+            var newValue = EditorGUI.Popup(rect, Content.driving, m_Driver.intValue, m_DrivingLabels);
+            if (EditorGUI.EndChangeCheck())
+                m_Driver.intValue = newValue;
+            EditorGUI.EndProperty();
+
+            EditorGUI.BeginChangeCheck();
+            EditorGUILayout.PropertyField(m_SourceObjects, Content.referenceObjects);
+            // also check if size has changed, because drag/drop on default control and Reset do not trigger change
+            if (EditorGUI.EndChangeCheck() || m_PreviousSourceSize != m_SourceObjectsSize.intValue)
+            {
+                UpdateDrivingLabels();
+                m_PreviousSourceSize = m_SourceObjectsSize.intValue;
+            }
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        void UpdateDrivingLabels()
+        {
+            Array.Resize(ref m_DrivingLabels, m_SourceObjects.arraySize);
+            for (int i = 0; i < m_DrivingLabels.Length; ++i)
+            {
+                var element = m_SourceObjects.GetArrayElementAtIndex(i);
+                var name = element.objectReferenceValue == null ? "None" : element.objectReferenceValue.name;
+                m_DrivingLabels[i] = new GUIContent($"{i} : {name}");
+            }
+        }
+
+        [MenuItem("CONTEXT/MultiReferentialConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as MultiReferentialConstraint;
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiReferentialConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as MultiReferentialConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiReferentialConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/MultiReferentialConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as MultiReferentialConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(MultiReferentialConstraint))]
+    class MultiReferentialConstraintBakeParameters : BakeParameters<MultiReferentialConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, MultiReferentialConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            var sources = constraint.data.sourceObjects;
+            for (int i = 1; i < sources.Count; ++i)
+                EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, sources[i], bindings);
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, MultiReferentialConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            var transform = constraint.data.sourceObjects[0];
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, transform, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiReferentialConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
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+guid: 74cfdd6a1e6ff244496d38de0c2bbee5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiRotationConstraintEditor.cs

@@ -0,0 +1,118 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using System.Collections.Generic;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(MultiRotationConstraint))]
+    [CanEditMultipleObjects]
+    class MultiRotationConstraintEditor : Editor
+    {
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_ConstrainedAxes;
+        SerializedProperty m_SourceObjects;
+        SerializedProperty m_MaintainOffset;
+        SerializedProperty m_Offset;
+
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<MultiRotationConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_ConstrainedAxes = data.FindPropertyRelative("m_ConstrainedAxes");
+            m_SourceObjects = data.FindPropertyRelative("m_SourceObjects");
+            m_MaintainOffset = data.FindPropertyRelative("m_MaintainOffset");
+            m_Offset = data.FindPropertyRelative("m_Offset");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+            EditorGUILayout.PropertyField(m_ConstrainedAxes, CommonContent.constrainedAxesRotation);
+            EditorGUILayout.PropertyField(m_SourceObjects, CommonContent.sourceObjectsWeightedRotation);
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_MaintainOffset, CommonContent.maintainRotationOffset);
+                EditorGUILayout.PropertyField(m_Offset, CommonContent.offsetRotation);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/MultiRotationConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as MultiRotationConstraint;
+
+            var axesMask = new Vector3(
+                System.Convert.ToSingle(constraint.data.constrainedXAxis),
+                System.Convert.ToSingle(constraint.data.constrainedYAxis),
+                System.Convert.ToSingle(constraint.data.constrainedZAxis));
+
+            if (Vector3.Dot(axesMask, axesMask) < 3f)
+            {
+                Debug.LogWarning("Multi-Rotation constraint with one or more Constrained Axes toggled off may lose precision when transferring its motion to constraint.");
+            }
+
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiRotationConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as MultiRotationConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/MultiRotationConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/MultiRotationConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as MultiRotationConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(MultiRotationConstraint))]
+    class MultiRotationConstraintBakeParameters : BakeParameters<MultiRotationConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, MultiRotationConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            for (int i = 0; i < constraint.data.sourceObjects.Count; ++i)
+            {
+                var sourceObject = constraint.data.sourceObjects[i];
+
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, sourceObject.transform, bindings);
+                EditorCurveBindingUtils.CollectPropertyBindings(rigBuilder.transform, constraint, ((IMultiRotationConstraintData)constraint.data).sourceObjectsProperty + ".m_Item" + i + ".weight", bindings);
+            }
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, MultiRotationConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/MultiRotationConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
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+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/OverrideTransformEditor.cs

@@ -0,0 +1,152 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(OverrideTransform))]
+    [CanEditMultipleObjects]
+    class OverrideTransformEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent sourceObjects = new GUIContent(CommonContent.sourceObjects.text);
+            public static readonly GUIContent overrideSource = EditorGUIUtility.TrTextContent(
+                "Override Source",
+                "The GameObject that influences the Constrained Object's transform. " +
+                "If specified, Override Position and Override Rotation fields are ignored."
+            );
+            public static readonly GUIContent overridePosition = EditorGUIUtility.TrTextContent(
+                "Override Position",
+                "A specific position value to apply to the Constrained Object. " +
+                "This value is ignored if an Override Source is specified."
+            );
+            public static readonly GUIContent overrideRotation = EditorGUIUtility.TrTextContent(
+                "Override Rotation",
+                "A specific rotation value to apply to the Constrained Object. " +
+                "This value is ignored if an Override Source is specified."
+            );
+            public static readonly GUIContent space = EditorGUIUtility.TrTextContent(
+                "Space",
+                "Specifies how the Override Source's local transform values (or manual Override Position and Rotation) should be applied to Constrained Object."
+            );
+            public static readonly GUIContent positionWeight = EditorGUIUtility.TrTextContent(
+                "Position Weight",
+                "The weight of the position influence."
+            );
+            public static readonly GUIContent rotationWeight = EditorGUIUtility.TrTextContent(
+                "Rotation Weight",
+                "The weight of the rotation influence."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_ConstrainedObject;
+        SerializedProperty m_OverrideSource;
+        SerializedProperty m_OverridePosition;
+        SerializedProperty m_OverrideRotation;
+        SerializedProperty m_Space;
+        SerializedProperty m_PositionWeight;
+        SerializedProperty m_RotationWeight;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<OverrideTransformEditor>();
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<OverrideTransformEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_ConstrainedObject = data.FindPropertyRelative("m_ConstrainedObject");
+            m_OverrideSource = data.FindPropertyRelative("m_OverrideSource");
+            m_OverridePosition = data.FindPropertyRelative("m_OverridePosition");
+            m_OverrideRotation = data.FindPropertyRelative("m_OverrideRotation");
+            m_Space = data.FindPropertyRelative("m_Space");
+            m_PositionWeight = data.FindPropertyRelative("m_PositionWeight");
+            m_RotationWeight = data.FindPropertyRelative("m_RotationWeight");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_ConstrainedObject, CommonContent.constrainedObject);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.sourceObjects);
+            if (m_SourceObjectsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_OverrideSource, Content.overrideSource);
+                using (new EditorGUI.DisabledScope(m_OverrideSource.objectReferenceValue != null))
+                {
+                    EditorGUILayout.PropertyField(m_OverridePosition, Content.overridePosition);
+                    EditorGUILayout.PropertyField(m_OverrideRotation, Content.overrideRotation);
+                }
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_Space, Content.space);
+                EditorGUILayout.PropertyField(m_PositionWeight, Content.positionWeight);
+                EditorGUILayout.PropertyField(m_RotationWeight, Content.rotationWeight);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/OverrideTransform/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as OverrideTransform;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/OverrideTransform/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as OverrideTransform;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(OverrideTransform))]
+    class OverrideTransformBakeParameters : BakeParameters<OverrideTransform>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => false;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, OverrideTransform constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            if (constraint.data.sourceObject != null)
+            {
+                EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.sourceObject, bindings);
+            }
+            else
+            {
+                var data = (IOverrideTransformData)constraint.data;
+                EditorCurveBindingUtils.CollectVector3Bindings(rigBuilder.transform, constraint, data.positionVector3Property, bindings);
+                EditorCurveBindingUtils.CollectVector3Bindings(rigBuilder.transform, constraint, data.rotationVector3Property, bindings);
+            }
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, OverrideTransform constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectTRSBindings(rigBuilder.transform, constraint.data.constrainedObject, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/OverrideTransformEditor.cs.meta

@@ -0,0 +1,11 @@
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+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/TwistChainConstraintEditor.cs

@@ -0,0 +1,143 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(TwistChainConstraint))]
+    [CanEditMultipleObjects]
+    class TwistChainConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent root = EditorGUIUtility.TrTextContent(
+                "Root",
+                "The root GameObject of the chain hierarchy."
+            );
+            public static readonly GUIContent tip = EditorGUIUtility.TrTextContent(
+                "Tip",
+                "The final GameObject of the chain hierarchy. It must be a descendant of the Root GameObject."
+            );
+            public static readonly GUIContent sourceObjects = new GUIContent(CommonContent.sourceObjects.text);
+            public static readonly GUIContent rootTarget = EditorGUIUtility.TrTextContent(
+                "Root Target",
+                "The GameObject that specifies the desired target rotation for the chain's Root."
+            );
+            public static readonly GUIContent tipTarget = EditorGUIUtility.TrTextContent(
+                "Tip Target",
+                "The GameObject that specifies the desired target rotation for the chain's Tip."
+            );
+            public static readonly GUIContent curve = EditorGUIUtility.TrTextContent(
+                "Curve",
+                "A curve with a normalized domain and range, specifying how the twist rotation should be distributed down the length of the chain."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_Root;
+        SerializedProperty m_Tip;
+        SerializedProperty m_RootTarget;
+        SerializedProperty m_TipTarget;
+        SerializedProperty m_Curve;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<TwistChainConstraintEditor>();
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<TwistChainConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_RootTarget = data.FindPropertyRelative("m_RootTarget");
+            m_TipTarget = data.FindPropertyRelative("m_TipTarget");
+            m_Root = data.FindPropertyRelative("m_Root");
+            m_Tip = data.FindPropertyRelative("m_Tip");
+            m_Curve = data.FindPropertyRelative("m_Curve");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_Root, Content.root);
+            EditorGUILayout.PropertyField(m_Tip, Content.tip);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.sourceObjects);
+            if (m_SourceObjectsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_RootTarget, Content.rootTarget);
+                EditorGUILayout.PropertyField(m_TipTarget, Content.tipTarget);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_Curve, Content.curve);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/TwistChainConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as TwistChainConstraint;
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/TwistChainConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as TwistChainConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/TwistChainConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/TwistChainConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as TwistChainConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(TwistChainConstraint))]
+    class TwistChainConstraintBakeParameters : BakeParameters<TwistChainConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, TwistChainConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.rootTarget, bindings);
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.tipTarget, bindings);
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, TwistChainConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            // Retrieve chain in-between root and tip transforms.
+            Transform[] chain = ConstraintsUtils.ExtractChain(constraint.data.root, constraint.data.tip);
+
+            for (int i = 0; i < chain.Length; ++i)
+            {
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, chain[i], bindings);
+            }
+
+            return bindings;
+        }
+    }
+}
+

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/TwistChainConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6f51e9e105d754014895d13788b539ae
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/TwistCorrectionEditor.cs

@@ -0,0 +1,114 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using System.Collections.Generic;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(TwistCorrection))]
+    [CanEditMultipleObjects]
+    class TwistCorrectionEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent source = EditorGUIUtility.TrTextContent(
+                "Source",
+                "The GameObject that influences the Twist Nodes to rotate around a specific Twist Axis."
+            );
+            public static readonly GUIContent twistAxis = EditorGUIUtility.TrTextContent(
+                "Twist Axis",
+                "Specifies the axis on the Source object from which the rotation is extracted and then redistributed to the Twist Nodes."
+            );
+            public static readonly GUIContent twistNodes = EditorGUIUtility.TrTextContent(
+                "Twist Nodes",
+                "The list of GameObjects that will be influenced by the Source GameObject, and the cumulative percentage of the Source's twist rotation they should inherit. " +
+                "They are generally expected to all be leaf nodes in the hierarchy (i.e., they have a common parent and no children), and to have their twist axes oriented the same as the Source object in their initial pose."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_Source;
+        SerializedProperty m_TwistAxis;
+        SerializedProperty m_TwistNodes;
+        SerializedProperty m_TwistNodesLength;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<TwistChainConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+            var data = serializedObject.FindProperty("m_Data");
+            m_Source = data.FindPropertyRelative("m_Source");
+            m_TwistAxis = data.FindPropertyRelative("m_TwistAxis");
+            m_TwistNodes = data.FindPropertyRelative("m_TwistNodes");
+            m_TwistNodesLength = m_TwistNodes.FindPropertyRelative("m_Length");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+
+            // by default, the first WeightedTransform element a user adds has a weight of 1
+            // for this constraint, the first twist node usually should not have a value of 1
+            // TODO: make drag/drop auto-distribute weights
+            EditorGUI.BeginChangeCheck();
+            var oldLength = m_TwistNodesLength.intValue;
+            EditorGUILayout.PropertyField(m_TwistNodes, Content.twistNodes);
+            if (EditorGUI.EndChangeCheck() && oldLength == 0 && m_TwistNodesLength.intValue != oldLength)
+                m_TwistNodes.FindPropertyRelative("m_Item0.weight").floatValue = 0f;
+
+            EditorGUILayout.PropertyField(m_TwistAxis, Content.twistAxis);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.source);
+            {
+                ++EditorGUI.indentLevel;
+                EditorGUILayout.PropertyField(m_Source);
+                --EditorGUI.indentLevel;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/TwistCorrection/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as TwistCorrection;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/TwistCorrection/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as TwistCorrection;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(TwistCorrection))]
+    class TwistCorrectionBakeParameters : BakeParameters<TwistCorrection>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => false;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, TwistCorrection constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, constraint.data.sourceObject, bindings);
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, TwistCorrection constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            foreach (var node in constraint.data.twistNodes)
+                EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, node.transform, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/TwistCorrectionEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: e52e5d5c12dea4e4397e6781cbeac36d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/TwoBoneIKConstraintEditor.cs

@@ -0,0 +1,301 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(TwoBoneIKConstraint))]
+    [CanEditMultipleObjects]
+    class TwoBoneIKConstraintEditor : Editor
+    {
+        static class Content
+        {
+            public static readonly GUIContent root = EditorGUIUtility.TrTextContent(
+                "Root",
+                "The root GameObject of the limb hierarchy."
+            );
+            public static readonly GUIContent mid = EditorGUIUtility.TrTextContent(
+                "Mid",
+                "The middle GameObject of the limb hierarchy. It must be a child of the Root GameObject."
+            );
+            public static readonly GUIContent tip = EditorGUIUtility.TrTextContent(
+                "Tip",
+                "The final GameObject of the limb hierarchy. It must be a child of the Mid GameObject."
+            );
+            public static readonly GUIContent sourceObjects = new GUIContent(CommonContent.sourceObjects.text);
+            public static readonly GUIContent target = EditorGUIUtility.TrTextContent(
+                "Target",
+                "Source GameObject that specifies the desired position of the Tip."
+            );
+            public static readonly GUIContent hint = EditorGUIUtility.TrTextContent(
+                "Hint",
+                "Optional Source GameObject, whose position is used to specify the direction the limb should be oriented when it bends."
+            );
+            public static readonly GUIContent targetPositionWeight = EditorGUIUtility.TrTextContent(
+                "Target Position Weight",
+                "The weight to apply for calculating the desired position when reaching for the Target."
+            );
+            public static readonly GUIContent targetRotationWeight = EditorGUIUtility.TrTextContent(
+                "Target Rotation Weight",
+                "The weight of the rotation applied to the Tip."
+            );
+            public static readonly GUIContent hintWeight = EditorGUIUtility.TrTextContent(
+                "Hint Weight",
+                "The amount of influence the Hint has on the configuration of the hierarchy."
+            );
+        }
+
+        SerializedProperty m_Weight;
+        SerializedProperty m_Root;
+        SerializedProperty m_Mid;
+        SerializedProperty m_Tip;
+        SerializedProperty m_Target;
+        SerializedProperty m_Hint;
+        SerializedProperty m_TargetPositionWeight;
+        SerializedProperty m_TargetRotationWeight;
+        SerializedProperty m_HintWeight;
+        SerializedProperty m_MaintainTargetPositionOffset;
+        SerializedProperty m_MaintainTargetRotationOffset;
+
+        readonly FoldoutState m_SourceObjectsToggle = FoldoutState.ForSourceObjects<TwoBoneIKConstraintEditor>();
+        readonly FoldoutState m_SettingsToggle = FoldoutState.ForSettings<TwoBoneIKConstraintEditor>();
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+
+            var data = serializedObject.FindProperty("m_Data");
+            m_Root = data.FindPropertyRelative("m_Root");
+            m_Mid = data.FindPropertyRelative("m_Mid");
+            m_Tip = data.FindPropertyRelative("m_Tip");
+            m_Target = data.FindPropertyRelative("m_Target");
+            m_Hint = data.FindPropertyRelative("m_Hint");
+            m_TargetPositionWeight = data.FindPropertyRelative("m_TargetPositionWeight");
+            m_TargetRotationWeight = data.FindPropertyRelative("m_TargetRotationWeight");
+            m_HintWeight = data.FindPropertyRelative("m_HintWeight");
+            m_MaintainTargetPositionOffset = data.FindPropertyRelative("m_MaintainTargetPositionOffset");
+            m_MaintainTargetRotationOffset = data.FindPropertyRelative("m_MaintainTargetRotationOffset");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+
+            EditorGUILayout.PropertyField(m_Weight, CommonContent.weight);
+            EditorGUILayout.PropertyField(m_Root, Content.root);
+            EditorGUILayout.PropertyField(m_Mid, Content.mid);
+            EditorGUILayout.PropertyField(m_Tip, Content.tip);
+
+            m_SourceObjectsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SourceObjectsToggle.value, Content.sourceObjects);
+            if (m_SourceObjectsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                EditorGUILayout.PropertyField(m_Target, Content.target);
+                EditorGUILayout.PropertyField(m_Hint, Content.hint);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            m_SettingsToggle.value = EditorGUILayout.BeginFoldoutHeaderGroup(m_SettingsToggle.value, CommonContent.settings);
+            if (m_SettingsToggle.value)
+            {
+                EditorGUI.indentLevel++;
+                MaintainOffsetHelper.DoDropdown(CommonContent.maintainIKTargetOffset, m_MaintainTargetPositionOffset, m_MaintainTargetRotationOffset);
+                EditorGUILayout.PropertyField(m_TargetPositionWeight, Content.targetPositionWeight);
+                EditorGUILayout.PropertyField(m_TargetRotationWeight, Content.targetRotationWeight);
+                EditorGUILayout.PropertyField(m_HintWeight, Content.hintWeight);
+                EditorGUI.indentLevel--;
+            }
+            EditorGUILayout.EndFoldoutHeaderGroup();
+
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/TwoBoneIKConstraint/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var constraint = command.context as TwoBoneIKConstraint;
+            BakeUtils.TransferMotionToConstraint(constraint);
+        }
+
+        [MenuItem("CONTEXT/TwoBoneIKConstraint/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var constraint = command.context as TwoBoneIKConstraint;
+            BakeUtils.TransferMotionToSkeleton(constraint);
+        }
+
+        [MenuItem("CONTEXT/TwoBoneIKConstraint/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/TwoBoneIKConstraint/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var constraint = command.context as TwoBoneIKConstraint;
+            return BakeUtils.TransferMotionValidate(constraint);
+        }
+
+        [MenuItem("CONTEXT/TwoBoneIKConstraint/Auto Setup from Tip Transform", false, 631)]
+        public static void TwoBoneIKAutoSetup(MenuCommand command)
+        {
+            var constraint = command.context as TwoBoneIKConstraint;
+            var tip = constraint.data.tip;
+            var animator = constraint.GetComponentInParent<Animator>()?.transform;
+            var dirty = false;
+
+            if (!tip)
+            {
+                var selection = Selection.transforms;
+                var constraintInSelection = false;
+
+                // Take transform from selection that is part of the animator hierarchy & not the constraint transform.
+                if (animator)
+                {
+                    for (int i = 0; i < selection.Length; i++)
+                    {
+                        if (selection[i].IsChildOf(animator))
+                        {
+                            if (selection[i] != constraint.transform)
+                            {
+                                tip = selection[i];
+                                break;
+                            }
+                            else
+                            {
+                                constraintInSelection = true;
+                            }
+                        }
+                    }
+                }
+
+                // If the constraint itself was selected and we haven't found anything use that.
+                if (!tip && constraintInSelection)
+                    tip = constraint.transform;
+
+                // If there is still no tip return.
+                if (!tip)
+                {
+                    Debug.LogWarning("Please provide a tip before running auto setup!");
+                    return;
+                }
+                else
+                {
+                    Undo.RecordObject(constraint, "Setup tip bone from user selection");
+                    constraint.data.tip = tip;
+                    dirty = true;
+                }
+            }
+
+            if (!constraint.data.mid)
+            {
+                Undo.RecordObject(constraint, "Setup mid bone for TwoBoneIK");
+                constraint.data.mid = tip.parent;
+                dirty = true;
+            }
+
+            if (!constraint.data.root)
+            {
+                Undo.RecordObject(constraint, "Setup root bone for TwoBoneIK");
+                constraint.data.root = tip.parent.parent;
+                dirty = true;
+            }
+
+            if (!constraint.data.target)
+            {
+                var target = constraint.transform.Find(constraint.gameObject.name + "_target");
+                if (target == null)
+                {
+                    var t = new GameObject();
+                    Undo.RegisterCreatedObjectUndo(t, "Created target");
+                    t.name = constraint.gameObject.name + "_target";
+                    t.transform.localScale = .1f * t.transform.localScale;
+                    Undo.SetTransformParent(t.transform, constraint.transform, "Set new parent");
+                    target = t.transform;
+                }
+                constraint.data.target = target;
+                dirty = true;
+            }
+
+            if (!constraint.data.hint)
+            {
+                var hint = constraint.transform.Find(constraint.gameObject.name + "_hint");
+                if (hint == null)
+                {
+                    var t = new GameObject();
+                    Undo.RegisterCreatedObjectUndo(t, "Created hint");
+                    t.name = constraint.gameObject.name + "_hint";
+                    t.transform.localScale = .1f * t.transform.localScale;
+                    Undo.SetTransformParent(t.transform, constraint.transform, "Set new parent");
+                    hint = t.transform;
+                }
+                constraint.data.hint = hint;
+                dirty = true;
+            }
+
+            Vector3 rootPosition = constraint.data.root.position;
+            Vector3 midPosition = constraint.data.mid.position;
+            Vector3 tipPosition = constraint.data.tip.position;
+            Quaternion tipRotation = constraint.data.tip.rotation;
+            Vector3 targetPosition = constraint.data.target.position;
+            Quaternion targetRotation = constraint.data.target.rotation;
+            Vector3 hintPosition = constraint.data.hint.position;
+            float posWeight = constraint.data.targetPositionWeight;
+            float rotWeight = constraint.data.targetRotationWeight;
+            float hintWeight = constraint.data.hintWeight;
+            AffineTransform targetOffset = new AffineTransform(Vector3.zero, Quaternion.identity);
+
+            AnimationRuntimeUtils.InverseSolveTwoBoneIK(rootPosition, midPosition, tipPosition, tipRotation,
+                ref targetPosition, ref targetRotation, ref hintPosition, true, posWeight, rotWeight, hintWeight, targetOffset);
+
+            constraint.data.target.position = targetPosition;
+            constraint.data.target.rotation = targetRotation;
+            constraint.data.hint.position = hintPosition;
+
+            Rig rig = constraint.GetComponentInParent<Rig>();
+            if (rig != null)
+            {
+                RigEffectorData.Style targetStyle = RigEffector.defaultStyle;
+                targetStyle.shape = EditorHelper.LoadShape("BoxEffector.asset");
+                rig.AddEffector(constraint.data.target, targetStyle);
+                RigEffectorData.Style hintStyle = RigEffector.defaultStyle;
+                hintStyle.shape = EditorHelper.LoadShape("BallEffector.asset");
+                rig.AddEffector(constraint.data.hint, hintStyle);
+            }
+
+            if (dirty && PrefabUtility.IsPartOfPrefabInstance(constraint))
+                EditorUtility.SetDirty(constraint);
+        }
+    }
+
+    [BakeParameters(typeof(TwoBoneIKConstraint))]
+    class TwoBoneIKConstraintBakeParameters : BakeParameters<TwoBoneIKConstraint>
+    {
+        public override bool canBakeToSkeleton => true;
+        public override bool canBakeToConstraint => true;
+
+        public override IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, TwoBoneIKConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            EditorCurveBindingUtils.CollectTRBindings(rigBuilder.transform, constraint.data.target, bindings);
+
+            if (constraint.data.hint != null)
+                EditorCurveBindingUtils.CollectPositionBindings(rigBuilder.transform, constraint.data.hint, bindings);
+
+            return bindings;
+        }
+
+        public override IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, TwoBoneIKConstraint constraint)
+        {
+            var bindings = new List<EditorCurveBinding>();
+
+            var root = constraint.data.root;
+            var mid = constraint.data.mid;
+            var tip = constraint.data.tip;
+
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, root, bindings);
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, mid, bindings);
+            EditorCurveBindingUtils.CollectRotationBindings(rigBuilder.transform, tip, bindings);
+
+            return bindings;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/Constraints/TwoBoneIKConstraintEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: d47d5b10876eed042af2bccb184f9a5b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigBuilderEditor.cs

@@ -0,0 +1,61 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using UnityEditorInternal;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(RigBuilder))]
+    class RigBuilderEditor : Editor
+    {
+        static readonly GUIContent k_RigLabel = new GUIContent("Rig Layers");
+
+        SerializedProperty m_Rigs;
+        ReorderableList m_ReorderableList;
+
+        void OnEnable()
+        {
+            m_Rigs = serializedObject.FindProperty("m_RigLayers");
+            m_ReorderableList = ReorderableListHelper.Create(serializedObject, m_Rigs, true, true);
+            if (m_ReorderableList.count == 0)
+                ((RigBuilder)serializedObject.targetObject).layers.Add(new RigLayer(null));
+
+            m_ReorderableList.drawHeaderCallback = (Rect rect) => EditorGUI.LabelField(rect, k_RigLabel);
+
+            m_ReorderableList.onAddCallback = (ReorderableList list) =>
+            {
+                ((RigBuilder)(serializedObject.targetObject)).layers.Add(new RigLayer(null, true));
+            };
+        }
+
+        public override void OnInspectorGUI()
+        {
+            serializedObject.Update();
+            EditorGUILayout.Separator();
+            m_ReorderableList.DoLayoutList();
+            serializedObject.ApplyModifiedProperties();
+        }
+
+        [MenuItem("CONTEXT/RigBuilder/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var rigBuilder = command.context as RigBuilder;
+            BakeUtils.TransferMotionToConstraint(rigBuilder);
+        }
+
+        [MenuItem("CONTEXT/RigBuilder/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var rigBuilder = command.context as RigBuilder;
+            BakeUtils.TransferMotionToSkeleton(rigBuilder);
+        }
+
+        [MenuItem("CONTEXT/RigBuilder/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/RigBuilder/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var rigBuilder = command.context as RigBuilder;
+            return BakeUtils.TransferMotionValidate(rigBuilder);
+        }
+
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigBuilderEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 5f920510daf5fba46b137a815f4e9a1b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigEditor.cs

@@ -0,0 +1,76 @@
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(Rig))]
+    [CanEditMultipleObjects]
+    class RigEditor : Editor
+    {
+        SerializedProperty m_Weight;
+
+        void OnEnable()
+        {
+            m_Weight = serializedObject.FindProperty("m_Weight");
+        }
+
+        public override void OnInspectorGUI()
+        {
+            bool isEditingMultipleObjects = targets.Length > 1;
+
+            serializedObject.Update();
+            EditorGUILayout.Separator();
+            EditorGUILayout.PropertyField(m_Weight);
+            serializedObject.ApplyModifiedProperties();
+
+            if (!isEditingMultipleObjects)
+            {
+                var rig = target as Rig;
+                var rigBuilder = rig.GetComponentInParent<RigBuilder>();
+
+                if (rigBuilder == null)
+                {
+                    EditorGUILayout.HelpBox("Rig component is not child of a GameObject with a RigBuilder component.", MessageType.Warning, true);
+                }
+                else
+                {
+                    var inRigBuilder = false;
+                    var layers = rigBuilder.layers;
+
+                    for (int i = 0; i < layers.Count; ++i)
+                    {
+                        if (layers[i].rig == rig && layers[i].active)
+                        {
+                            inRigBuilder = true;
+                            break;
+                        }
+                    }
+
+                    if (!inRigBuilder)
+                        EditorGUILayout.HelpBox("Rig component is not referenced or not active in the RigBuilder component.", MessageType.Warning, true);
+                }
+            }
+        }
+
+        [MenuItem("CONTEXT/Rig/Transfer motion to constraint", false, 611)]
+        public static void TransferMotionToConstraint(MenuCommand command)
+        {
+            var rig = command.context as Rig;
+            BakeUtils.TransferMotionToConstraint(rig);
+        }
+
+        [MenuItem("CONTEXT/Rig/Transfer motion to skeleton", false, 612)]
+        public static void TransferMotionToSkeleton(MenuCommand command)
+        {
+            var rig = command.context as Rig;
+            BakeUtils.TransferMotionToSkeleton(rig);
+        }
+
+        [MenuItem("CONTEXT/Rig/Transfer motion to constraint", true)]
+        [MenuItem("CONTEXT/Rig/Transfer motion to skeleton", true)]
+        public static bool TransferMotionValidate(MenuCommand command)
+        {
+            var rig = command.context as Rig;
+            return BakeUtils.TransferMotionValidate(rig);
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 6856dd80c42d3244b9d9eb1844f8715f
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigLayerDrawer.cs

@@ -0,0 +1,40 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomPropertyDrawer(typeof(RigLayer))]
+    class RigLayerDrawer : PropertyDrawer
+    {
+        const int k_Padding = 6;
+        const int k_TogglePadding = 30;
+
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
+        {
+            return EditorGUIUtility.singleLineHeight;
+        }
+
+        public override void OnGUI(Rect rect, SerializedProperty property, GUIContent label)
+        {
+            EditorGUI.BeginProperty(rect, label, property);
+
+            var w = rect.width - k_TogglePadding;
+            var weightRect = new Rect(rect.x + w + k_Padding, rect.y, rect.width - w - k_Padding, rect.height);
+            rect.width = w;
+
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.PropertyField(rect, property.FindPropertyRelative("m_Rig"), label);
+
+            var indentLvl = EditorGUI.indentLevel;
+            EditorGUI.indentLevel = 0;
+            EditorGUI.PropertyField(weightRect, property.FindPropertyRelative("m_Active"), GUIContent.none);
+            EditorGUI.indentLevel = indentLvl;
+
+            if (EditorGUI.EndChangeCheck())
+                property.serializedObject.ApplyModifiedProperties();
+
+            EditorGUI.EndProperty();
+        }
+    }
+}
+

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigLayerDrawer.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: cfddd68cbf078454ab5dfd53ed554127
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigTransformEditor.cs

@@ -0,0 +1,12 @@
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomEditor(typeof(RigTransform))]
+    class RigTransformEditor : Editor
+    {
+        public override void OnInspectorGUI()
+        {
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/RigTransformEditor.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: ab480ae8b7295e54c9c72a011401317e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AnimationRig/WeightedTransformArrayDrawer.cs

@@ -0,0 +1,249 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using UnityEditorInternal;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+using UnityObject = UnityEngine.Object;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomPropertyDrawer(typeof(WeightedTransformArray))]
+    sealed class WeightedTransformArrayDrawer : PropertyDrawer
+    {
+        const string k_LengthPath = "m_Length";
+        const string k_ItemTransformPath = nameof(WeightedTransform.transform);
+        const string k_ItemWeightPath = nameof(WeightedTransform.weight);
+        static readonly string[] k_ItemPropertyPaths =
+            Enumerable.Range(0, WeightedTransformArray.k_MaxLength).Select(i => $"m_Item{i}").ToArray();
+
+        // one reorderable list per unique property path
+        readonly Dictionary<string, (ReorderableList listControl, SerializedProperty lengthProperty)> m_GUIState =
+            new Dictionary<string, (ReorderableList listControl, SerializedProperty lengthProperty)>();
+
+        // function to get WeightedTransform from item property
+        static WeightedTransform GetValueSingle(SerializedProperty item) => new WeightedTransform
+        {
+            transform = item.FindPropertyRelative(k_ItemTransformPath).objectReferenceValue as Transform,
+            weight = item.FindPropertyRelative(k_ItemWeightPath).floatValue
+        };
+
+        // function to modify a list of items per target
+        static void ModifyItemsSingle(SerializedProperty parentProperty, Action<List<WeightedTransform>> modifyList)
+        {
+            foreach (var target in parentProperty.serializedObject.targetObjects)
+            {
+                using (var so = new SerializedObject(target))
+                {
+                    var sp = so.FindProperty(parentProperty.propertyPath);
+                    var length = sp.FindPropertyRelative(k_LengthPath);
+
+                    // create a live list of items
+                    var items =
+                        Enumerable.Range(0, length.intValue)
+                        .Select(i => GetValueSingle(sp.FindPropertyRelative(k_ItemPropertyPaths[i])))
+                        .ToList();
+
+                    // modify the list
+                    modifyList(items);
+
+                    // write the results back to the serialized data stream
+                    for (var i = 0; i < items.Count; ++i)
+                    {
+                        var item = sp.FindPropertyRelative(k_ItemPropertyPaths[i]);
+                        item.FindPropertyRelative(k_ItemTransformPath).objectReferenceValue = items[i].transform;
+                        item.FindPropertyRelative(k_ItemWeightPath).floatValue = items[i].weight;
+                    }
+                    // clear other items
+                    for (var i = items.Count; i < WeightedTransformArray.k_MaxLength; ++i)
+                    {
+                        var item = sp.FindPropertyRelative(k_ItemPropertyPaths[i]);
+                        item.FindPropertyRelative(k_ItemTransformPath).objectReferenceValue = default;
+                        item.FindPropertyRelative(k_ItemWeightPath).floatValue = default;
+                    }
+
+                    // synchronize length property
+                    length.intValue = items.Count;
+
+                    // write back results
+                    so.ApplyModifiedProperties();
+                }
+            }
+            // update parent property's serialized data stream to get new (shared) values for all targets
+            parentProperty.serializedObject.Update();
+        }
+
+        (ReorderableList listControl, SerializedProperty lengthProperty) GetGUIState(SerializedProperty property, GUIContent label)
+        {
+            var lengthProperty = property.FindPropertyRelative(k_LengthPath);
+
+            // create a new reorderable list if one does not exist
+            if (!m_GUIState.TryGetValue(property.propertyPath, out var guiState))
+            {
+                // bind the control to a proxy list
+                var proxy = Enumerable.Range(0, lengthProperty.intValue)
+                    .ToList();
+                var reorderableList = new ReorderableList(proxy, typeof(int));
+
+                reorderableList.headerHeight = Styles.minHeaderHeight;
+
+                // default array control only allocates single line height, but that leaves no spacing between object fields
+                reorderableList.elementHeight =
+                    EditorGUIUtility.singleLineHeight + EditorGUIUtility.standardVerticalSpacing;
+
+                var attr = fieldInfo.GetCustomAttribute<WeightRangeAttribute>();
+                var legacyAttr = fieldInfo.GetCustomAttribute<RangeAttribute>();
+                var min = attr?.min ?? legacyAttr?.min ?? float.NaN;
+                var max = attr?.max ?? legacyAttr?.max ?? float.NaN;
+                var spacing = EditorGUIUtility.standardVerticalSpacing / 2f;
+                reorderableList.drawElementCallback += (rect, index, active, focused) =>
+                {
+                    rect = new Rect(rect) { height = EditorGUIUtility.singleLineHeight, y = rect.y + spacing };
+                    WeightedTransformDrawer.DoGUI(rect, property.FindPropertyRelative(k_ItemPropertyPaths[index]), min, max);
+                };
+
+                reorderableList.onCanAddCallback += list =>
+                    !Application.isPlaying
+                    && !AnimationMode.InAnimationMode()
+                    && lengthProperty.intValue < WeightedTransformArray.k_MaxLength;
+
+                reorderableList.onCanRemoveCallback += list =>
+                    !Application.isPlaying
+                    && !AnimationMode.InAnimationMode()
+                    && lengthProperty.intValue > 0;
+
+                reorderableList.onAddCallback += list =>
+                {
+                    ModifyItemsSingle(property, items =>
+                    {
+                        int insertIndex = Math.Max(0, reorderableList.index >= 0 ? reorderableList.index : items.Count - 1);
+                        if (items.Count < WeightedTransformArray.k_MaxLength)
+                            items.Insert(insertIndex, insertIndex < items.Count ? items[insertIndex] : WeightedTransform.Default(1f));
+                    });
+                    proxy.Add(proxy.Count);
+                };
+
+                reorderableList.onRemoveCallback += list =>
+                {
+                    ModifyItemsSingle(property, items =>
+                    {
+                        int removeIndex = Math.Max(0, reorderableList.index >= 0 ? reorderableList.index : items.Count - 1);
+                        if (removeIndex >= 0)
+                            items.RemoveAt(removeIndex);
+                    });
+                    proxy.RemoveAt(proxy.Count - 1);
+                };
+
+                reorderableList.onReorderCallbackWithDetails += (list, srcIndex, dstIndex) =>
+                    ModifyItemsSingle(property, items =>
+                    {
+                        var moved = items[srcIndex];
+                        items.RemoveAt(srcIndex);
+                        items.Insert(dstIndex, moved);
+                    });
+
+                guiState = m_GUIState[property.propertyPath] = (reorderableList, lengthProperty.Copy());
+            }
+
+            // synchronize proxy list to serialized length
+            var proxyList = guiState.listControl.list;
+            while (proxyList.Count < lengthProperty.intValue)
+                proxyList.Add(proxyList.Count);
+            while (proxyList.Count > lengthProperty.intValue)
+                proxyList.RemoveAt(proxyList.Count - 1);
+
+            return guiState;
+        }
+
+        static class Styles
+        {
+            // cf. ReorderableList.Defaults.minHeaderHeight;
+            public static float minHeaderHeight = 2f;
+            // cf. ReorderableListWrapper.cs
+            public const float headerPadding = 3f;
+            public const float arraySizeWidth = 50f; // 48 in ReorderableListWrapper, but EditorGUI.Slider() field is 50
+            public const float defaultFoldoutHeaderHeight = 18f;
+            public static readonly GUIContent sizeLabel = EditorGUIUtility.TrTextContent("", "Length");
+        }
+
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label) =>
+            Styles.defaultFoldoutHeaderHeight
+            + (property.isExpanded ? Styles.headerPadding + GetGUIState(property, label).listControl.GetHeight() : 0f);
+
+        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
+        {
+            var guiState = GetGUIState(property, label);
+
+            Rect headerRect = new Rect(position) { height = EditorGUIUtility.singleLineHeight };
+            Rect sizeRect = new Rect(headerRect) { xMin = headerRect.xMax - Styles.arraySizeWidth };
+
+            EventType prevType = Event.current.type;
+            if (Event.current.type == EventType.MouseUp && sizeRect.Contains(Event.current.mousePosition))
+            {
+                Event.current.type = EventType.Used;
+            }
+
+            property.isExpanded = EditorGUI.BeginFoldoutHeaderGroup(headerRect, property.isExpanded, label);
+            EditorGUI.EndFoldoutHeaderGroup();
+
+            if (Event.current.type == EventType.Used && sizeRect.Contains(Event.current.mousePosition)) Event.current.type = prevType;
+
+            EditorGUI.BeginChangeCheck();
+            EditorGUI.DelayedIntField(sizeRect, guiState.lengthProperty, Styles.sizeLabel);
+            if (EditorGUI.EndChangeCheck())
+                guiState.lengthProperty.intValue = Mathf.Clamp(guiState.lengthProperty.intValue, 0, WeightedTransformArray.k_MaxLength);
+            EditorGUI.LabelField(sizeRect, Styles.sizeLabel);
+
+            if (headerRect.Contains(Event.current.mousePosition))
+            {
+                if (Event.current.type == EventType.DragUpdated || Event.current.type == EventType.DragPerform)
+                {
+                    OnDropObjects(property, DragAndDrop.objectReferences, guiState.listControl);
+                    DragAndDrop.AcceptDrag();
+                    Event.current.Use();
+                }
+            }
+
+            if (Event.current.type == EventType.DragExited)
+            {
+                DragAndDrop.visualMode = DragAndDropVisualMode.None;
+                Event.current.Use();
+            }
+
+            if (property.isExpanded)
+                guiState.listControl.DoList(new Rect(position) { yMin = headerRect.yMax + Styles.headerPadding });
+        }
+
+        static void OnDropObjects(SerializedProperty property, UnityObject[] objectReferences, ReorderableList listControl)
+        {
+            foreach (var o in objectReferences)
+            {
+                var go = o as GameObject;
+                var c = o as Component;
+
+                if (go == null && c == null)
+                    continue;
+
+                if (listControl.list.Count >= WeightedTransformArray.k_MaxLength)
+                {
+                    DragAndDrop.visualMode = DragAndDropVisualMode.Rejected;
+                    continue;
+                }
+
+                DragAndDrop.visualMode = DragAndDropVisualMode.Generic;
+
+                var t = c == null ? go.transform : c.transform;
+                if (Event.current.type == EventType.DragPerform)
+                {
+                    ModifyItemsSingle(property, items =>
+                    {
+                        var weight = items.Count == 0 ? 1f : items[items.Count - 1].weight;
+                        items.Add(new WeightedTransform(t, weight));
+                    });
+                    listControl.list.Add(listControl.list.Count);
+                }
+            }
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/WeightedTransformArrayDrawer.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: ee7818cdc02e4548adb5ae6bc5901523
+timeCreated: 1607593832

Packages/com.unity.animation.rigging/Editor/AnimationRig/WeightedTransformDrawer.cs

@@ -0,0 +1,59 @@
+using System.Reflection;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomPropertyDrawer(typeof(WeightedTransform))]
+    class WeightedTransformDrawer : PropertyDrawer
+    {
+        public override float GetPropertyHeight(SerializedProperty property, GUIContent label) =>
+            EditorGUIUtility.singleLineHeight;
+
+        (WeightRangeAttribute attr, RangeAttribute legacyAttr)? m_RangeAttributes;
+
+        public override void OnGUI(Rect rect, SerializedProperty property, GUIContent label)
+        {
+            var (attr, legacyAttr) = m_RangeAttributes ??= (
+                fieldInfo.GetCustomAttribute<WeightRangeAttribute>(),
+                fieldInfo.GetCustomAttribute<RangeAttribute>()
+            );
+
+            float min = attr?.min ?? legacyAttr?.min ?? float.NaN;
+            float max = attr?.max ?? legacyAttr?.max ?? float.NaN;
+
+            DoGUI(rect, property, min, max);
+        }
+
+        static class Styles
+        {
+            public static float transformFieldWidthScale = 0.65f;
+            public static readonly int horizontalMargin = (
+                EditorStyles.objectField.margin.right + GUI.skin.horizontalSlider.margin.left
+            ) / 2;
+        }
+
+        internal static void DoGUI(Rect rect, SerializedProperty property, float min, float max)
+        {
+            EditorGUI.BeginProperty(rect, GUIContent.none, property);
+
+            var w = rect.width * Styles.transformFieldWidthScale;
+            var weightRect = new Rect(rect.x + w, rect.y, rect.width - w, EditorGUIUtility.singleLineHeight);
+            rect.width = w;
+
+            var transformRect = new Rect(rect.x, rect.y, rect.width - Styles.horizontalMargin, EditorGUIUtility.singleLineHeight);
+
+            EditorGUI.PropertyField(transformRect, property.FindPropertyRelative("transform"), GUIContent.none);
+
+            var indentLvl = EditorGUI.indentLevel;
+            EditorGUI.indentLevel = 0;
+            if (float.IsNaN(max) || float.IsNaN(min))
+                EditorGUI.PropertyField(weightRect, property.FindPropertyRelative("weight"), GUIContent.none);
+            else
+                EditorGUI.Slider(weightRect, property.FindPropertyRelative("weight"), min, max, GUIContent.none);
+            EditorGUI.indentLevel = indentLvl;
+
+            EditorGUI.EndProperty();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/AnimationRig/WeightedTransformDrawer.cs.meta

@@ -0,0 +1,11 @@
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+guid: a015bc034afc6b742996a3d23fa85902
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
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+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/AssemblyInfo.cs

@@ -0,0 +1,2 @@
+using System.Runtime.CompilerServices;
+[assembly: InternalsVisibleTo("Unity.Animation.Rigging.EditorTests")]

Packages/com.unity.animation.rigging/Editor/AssemblyInfo.cs.meta

@@ -0,0 +1,11 @@
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+guid: 0e9f01c83e9859644bb453f6f07af6d6
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+  defaultReferences: []
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+  userData: 
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+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/Attributes.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: f53358c1055884db9ba27bfa39aae0a0
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/Attributes/BakeParametersAttribute.cs

@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// Attribute that can be placed on BakeParameters. The attribute is used to declare to which RigConstraint the BakeParameters belong.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
+    public sealed class BakeParametersAttribute : Attribute
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="constraintType">The RigConstraint to which the BakeParameters belong.</param>
+        public BakeParametersAttribute(Type constraintType)
+        {
+            if (constraintType == null || !typeof(IRigConstraint).IsAssignableFrom(constraintType))
+                Debug.LogError("Invalid constraint for InverseRigConstraint attribute.");
+
+            this.constraintType = constraintType;
+        }
+
+        /// <summary>
+        /// The RigConstraint to which the BakeParameters belong.
+        /// </summary>
+        public Type constraintType { get; }
+    }
+
+    /// <summary>
+    /// Class that holds bi-directional baking capabilities and curve bindings of a RigConstraint.
+    /// </summary>
+    /// <typeparam name="T">The Type of RigConstraint the parameters belong to.</typeparam>
+    public abstract class BakeParameters<T> : IBakeParameters
+        where T : IRigConstraint
+    {
+        /// <summary>
+        /// Boolean used to determine if the RigConstraint can transfer motion from itself to the skeleton
+        /// </summary>
+        public abstract bool canBakeToSkeleton { get; }
+        /// <summary>
+        /// Boolean used to determine if the RigConstraint can transfer motion to itself from the skeleton.
+        /// </summary>
+        public abstract bool canBakeToConstraint { get; }
+
+        /// <summary>
+        /// Collects the editor curve bindings for all the properties that this RigConstraint modifies when transferring motion to the skeleton.
+        /// </summary>
+        /// <param name="rigBuilder">The RigBuilder which the constraint is part of.</param>
+        /// <param name="constraint">The RigConstraint for which the bindings should be collected.</param>
+        /// <returns></returns>
+        public abstract IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, T constraint);
+        /// <summary>
+        /// Collects the editor curve bindings for all the properties that this RigConstraint modifies when transferring motion to this constraint.
+        /// </summary>
+        /// <param name="rigBuilder">The RigBuilder which the constraint is part of.</param>
+        /// <param name="constraint">The RigConstraint for which the bindings should be collected.</param>
+        /// <returns></returns>
+        public abstract IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, T constraint);
+
+
+        /// <inheritdoc />
+        bool IBakeParameters.canBakeToSkeleton => canBakeToSkeleton;
+        /// <inheritdoc />
+        bool IBakeParameters.canBakeToConstraint => canBakeToConstraint;
+
+        /// <inheritdoc />
+        IEnumerable<EditorCurveBinding> IBakeParameters.GetSourceCurveBindings(RigBuilder rigBuilder, IRigConstraint constraint)
+        {
+            Debug.Assert(constraint is T);
+            T tConstraint = (T)constraint;
+            return GetSourceCurveBindings(rigBuilder, tConstraint);
+        }
+
+        /// <inheritdoc />
+        IEnumerable<EditorCurveBinding> IBakeParameters.GetConstrainedCurveBindings(RigBuilder rigBuilder, IRigConstraint constraint)
+        {
+            Debug.Assert(constraint is T);
+            T tConstraint = (T)constraint;
+            return GetConstrainedCurveBindings(rigBuilder, tConstraint);
+        }
+    }
+
+    /// <summary>
+    /// This is the base interface for BakeParameters.
+    /// </summary>
+    public interface IBakeParameters
+    {
+        /// <summary>
+        /// Boolean used to determine if the RigConstraint can transfer motion from itself to the skeleton
+        /// </summary>
+        bool canBakeToSkeleton { get; }
+        /// <summary>
+        /// Boolean used to determine if the RigConstraint can transfer motion to itself from the skeleton.
+        /// </summary>
+        bool canBakeToConstraint { get; }
+
+        /// <summary>
+        /// Collects the editor curve bindings for all the properties that this RigConstraint modifies when transferring motion to the skeleton.
+        /// </summary>
+        /// <param name="rigBuilder">The RigBuilder which the constraint is part of.</param>
+        /// <param name="constraint">The RigConstraint for which the bindings should be collected.</param>
+        /// <returns></returns>
+        IEnumerable<EditorCurveBinding> GetSourceCurveBindings(RigBuilder rigBuilder, IRigConstraint constraint);
+        /// <summary>
+        /// Collects the editor curve bindings for all the properties that this RigConstraint modifies when transferring motion to this constraint.
+        /// </summary>
+        /// <param name="rigBuilder">The RigBuilder which the constraint is part of.</param>
+        /// <param name="constraint">The RigConstraint for which the bindings should be collected.</param>
+        /// <returns></returns>
+        IEnumerable<EditorCurveBinding> GetConstrainedCurveBindings(RigBuilder rigBuilder, IRigConstraint constraint);
+    }
+
+}

Packages/com.unity.animation.rigging/Editor/Attributes/BakeParametersAttribute.cs.meta

@@ -0,0 +1,11 @@
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+guid: bc4c7bdb3fbef4e6f8eb6ea619b7c442
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
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Packages/com.unity.animation.rigging/Editor/Attributes/CustomOverlayAttribute.cs

@@ -0,0 +1,18 @@
+using System;
+using UnityEngine;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
+    internal sealed class CustomOverlayAttribute : Attribute
+    {
+        private Type m_EffectorType;
+
+        public CustomOverlayAttribute(Type effectorType)
+        {
+            m_EffectorType = effectorType;
+        }
+
+        public Type effectorType { get => m_EffectorType; }
+    }
+}

Packages/com.unity.animation.rigging/Editor/Attributes/CustomOverlayAttribute.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.unity.animation.rigging/Editor/Attributes/InverseRigConstraintAttribute.cs

@@ -0,0 +1,32 @@
+using System;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The [InverseRigConstraint] attribute allows to match an inverse constraint (inverse solve) to its
+    /// base constraint (forward solve) counterpart.  This is used in bi-directional baking to override
+    /// constraints when baking animations to constraints.
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
+    public sealed class InverseRigConstraintAttribute : Attribute
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="targetBinderType">The base constraint type.</param>
+        public InverseRigConstraintAttribute(Type targetBinderType)
+        {
+            if (targetBinderType == null || !typeof(IRigConstraint).IsAssignableFrom(targetBinderType))
+                Debug.LogError("Invalid constraint for InverseRigConstraint attribute.");
+
+            this.baseConstraint = targetBinderType;
+        }
+
+        /// <summary>
+        /// Retrieves the base constraint type.
+        /// </summary>
+        public Type baseConstraint { get; }
+    }
+}

Packages/com.unity.animation.rigging/Editor/Attributes/InverseRigConstraintAttribute.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.unity.animation.rigging/Editor/Effectors.meta

@@ -0,0 +1,8 @@
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+  userData: 
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Packages/com.unity.animation.rigging/Editor/Effectors/IRigEffector.cs

@@ -0,0 +1,12 @@
+using UnityEngine;
+
+namespace UnityEditor.Animations.Rigging
+{
+    internal interface IRigEffector
+    {
+        Transform transform { get; }
+        bool visible { get; set; }
+
+        void OnSceneGUI();
+    }
+}

Packages/com.unity.animation.rigging/Editor/Effectors/IRigEffector.cs.meta

@@ -0,0 +1,11 @@
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+  serializedVersion: 2
+  defaultReferences: []
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Packages/com.unity.animation.rigging/Editor/Effectors/IRigEffectorOverlay.cs

@@ -0,0 +1,10 @@
+using System;
+
+namespace UnityEditor.Animations.Rigging
+{
+    interface IRigEffectorOverlay : IDisposable
+    {
+        bool IsValid();
+        void OnSceneGUIOverlay();
+    }
+}

Packages/com.unity.animation.rigging/Editor/Effectors/IRigEffectorOverlay.cs.meta

@@ -0,0 +1,11 @@
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+  defaultReferences: []
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Packages/com.unity.animation.rigging/Editor/Effectors/RigEffector.cs

@@ -0,0 +1,307 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [Serializable]
+    internal class RigEffector : ScriptableObject, IRigEffector
+    {
+        [SerializeField] private RigEffectorData m_Data;
+
+        public Transform transform
+        {
+            get => m_Data.transform;
+        }
+
+        public bool visible
+        {
+            get => m_Data.visible;
+            set => m_Data.visible = value;
+        }
+
+        private static int s_ButtonHash = "RigEffector".GetHashCode();
+
+        public void Initialize(RigEffectorData data)
+        {
+            m_Data = data;
+        }
+
+        private static Material s_Material;
+
+        public static Material material
+        {
+            get
+            {
+                if (!s_Material)
+                {
+                    var shader = EditorHelper.LoadShader("BoneHandles.shader");
+                    s_Material = new Material(shader);
+                    s_Material.hideFlags = HideFlags.HideAndDontSave;
+                }
+
+                return s_Material;
+            }
+        }
+
+        public static RigEffectorData.Style defaultStyle
+        {
+            get
+            {
+                var style = new RigEffectorData.Style()
+                {
+                    shape =  EditorHelper.LoadShape("LocatorEffector.asset"),
+                    color = new Color(1f, 0f, 0f, 0.5f),
+                    size = 0.10f,
+                    position = Vector3.zero,
+                    rotation = Vector3.zero
+                };
+
+                return style;
+            }
+        }
+
+        public void OnSceneGUI()
+        {
+            if (!m_Data.visible)
+                return;
+
+            // Might happen if we delete transform while effector still exists.
+            if (transform == null)
+                return;
+
+            var style = m_Data.style;
+
+            // Disregard effectors without shapes.
+            if (style.shape == null)
+                return;
+
+            if (SceneVisibilityManager.instance.IsHidden(transform.gameObject, false))
+                return;
+
+            var mask = UnityEditor.Tools.visibleLayers;
+            if ((mask & (1 << transform.gameObject.layer)) == 0)
+                return;
+
+            int id = GUIUtility.GetControlID(s_ButtonHash, FocusType.Passive);
+            Event evt = Event.current;
+
+            switch (evt.GetTypeForControl(id))
+            {
+                case EventType.Layout:
+                    {
+                        HandleUtility.AddControl(id, DistanceToEffector(transform, style.shape, style.position, style.rotation, style.size));
+                        break;
+                    }
+                case EventType.MouseDown:
+                    {
+                        if (evt.alt)
+                            break;
+
+                        if (HandleUtility.nearestControl == id && evt.button == 0)
+                        {
+                            GameObject targetGameObject = transform.gameObject;
+                            if (!SceneVisibilityManager.instance.IsPickingDisabled(targetGameObject, false))
+                            {
+                                GUIUtility.hotControl = id; // Grab mouse focus
+                                EditorHelper.HandleClickSelection(targetGameObject, evt);
+                                evt.Use();
+                            }
+                        }
+                        break;
+                    }
+                case EventType.MouseDrag:
+                    {
+                        if (!evt.alt && GUIUtility.hotControl == id)
+                        {
+                            GameObject targetGameObject = transform.gameObject;
+                            if (!SceneVisibilityManager.instance.IsPickingDisabled(targetGameObject, false))
+                            {
+                                DragAndDrop.PrepareStartDrag();
+                                DragAndDrop.objectReferences = new UnityEngine.Object[] {transform};
+                                DragAndDrop.StartDrag(ObjectNames.GetDragAndDropTitle(transform));
+
+                                GUIUtility.hotControl = 0;
+
+                                evt.Use();
+                            }
+                        }
+                        break;
+                    }
+                case EventType.MouseUp:
+                    {
+                        if (GUIUtility.hotControl == id && (evt.button == 0 || evt.button == 2))
+                        {
+                            GUIUtility.hotControl = 0;
+                            evt.Use();
+                        }
+                        break;
+                    }
+                case EventType.Repaint:
+                    {
+                        Matrix4x4 matrix = GetEffectorMatrix(transform, style.position, style.rotation, style.size);
+
+                        Color highlight = style.color;
+
+                        bool hoveringEffector = GUIUtility.hotControl == 0 && HandleUtility.nearestControl == id;
+                        hoveringEffector = hoveringEffector &&
+                                           !SceneVisibilityManager.instance.IsPickingDisabled(transform.gameObject, false);
+
+                        if (hoveringEffector)
+                        {
+                            highlight = Handles.preselectionColor;
+                        }
+                        else if (Selection.Contains(transform.gameObject) || Selection.activeObject == transform.gameObject)
+                        {
+                            highlight = Handles.selectedColor;
+                        }
+
+                        try
+                        {
+                            Material mat = material;
+
+                            var shapeHighlight = MeshHasWireframeShapes(style.shape) ? style.color : highlight;
+                            var wireHighlight = new Color(highlight.r, highlight.g, highlight.b, 1f);
+
+                            if (style.shape.subMeshCount > 0)
+                            {
+                                //  Draw every sub meshes separately to control highlight vs shape colors.
+                                for (int i = 0; i < style.shape.subMeshCount; ++i)
+                                {
+                                    MeshTopology topology = style.shape.GetTopology(i);
+                                    bool isFilled = (topology == MeshTopology.Triangles || topology == MeshTopology.Quads);
+
+                                    mat.SetColor("_Color", isFilled ? shapeHighlight : wireHighlight);
+                                    mat.SetPass(0);
+
+                                    Graphics.DrawMeshNow(style.shape, matrix, i);
+                                }
+                            }
+                            else
+                            {
+                                MeshTopology topology = style.shape.GetTopology(0);
+                                bool isFilled = (topology == MeshTopology.Triangles || topology == MeshTopology.Quads);
+
+                                mat.SetColor("_Color", isFilled ? shapeHighlight : wireHighlight);
+                                mat.SetPass(0);
+
+                                Graphics.DrawMeshNow(style.shape, matrix);
+                            }
+                        }
+                        catch (Exception exception)
+                        {
+                            Debug.LogException(exception);
+                        }
+                    }
+                    break;
+            }
+        }
+
+        private bool FindMeshTopology(Mesh shape, IEnumerable<MeshTopology> topologies)
+        {
+            if (shape.subMeshCount > 0)
+            {
+                for (int i = 0; i < shape.subMeshCount; ++i)
+                {
+                    MeshTopology topology = shape.GetTopology(i);
+                    foreach (var topologyQuery in topologies)
+                    {
+                        if (topologyQuery == topology)
+                            return true;
+                    }
+                }
+            }
+            else
+            {
+                var topology = shape.GetTopology(0);
+                foreach (var topologyQuery in topologies)
+                {
+                    if (topologyQuery == topology)
+                            return true;
+                }
+            }
+
+            return false;
+        }
+
+        private bool MeshHasFilledShapes(Mesh shape) =>
+            FindMeshTopology(shape, new MeshTopology[] {MeshTopology.Triangles, MeshTopology.Quads});
+
+        private bool MeshHasWireframeShapes(Mesh shape) =>
+            FindMeshTopology(shape, new MeshTopology[] {MeshTopology.Lines, MeshTopology.LineStrip});
+
+        private Matrix4x4 GetEffectorMatrix(Transform transform, Vector3 position, Vector3 rotation, float size)
+        {
+            return Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one) * Matrix4x4.TRS(position, Quaternion.Euler(rotation), new Vector3(size, size, size));
+        }
+
+        private float DistanceToEffector(Transform transform, Mesh shape, Vector3 position, Vector3 rotation, float size)
+        {
+            Matrix4x4 matrix = GetEffectorMatrix(transform, position, rotation, size);
+            Vector3 origin = matrix.MultiplyPoint(Vector3.zero);
+
+            if (shape == null)
+                return HandleUtility.DistanceToCircle(origin, size * 0.5f);
+
+            if (MeshHasFilledShapes(shape))
+            {
+                var bounds = shape.bounds;
+                var extents = Mathf.Max( Mathf.Max(bounds.extents.x, bounds.extents.y), bounds.extents.z);
+                return HandleUtility.DistanceToCircle(origin + bounds.center * size, extents * size);
+            }
+
+            float nearestDistance = Mathf.Infinity;
+
+            Vector3[] vertices = shape.vertices;
+
+            for (int i = 0; i < shape.subMeshCount; ++i)
+            {
+                MeshTopology topology = shape.GetTopology(i);
+                if (topology == MeshTopology.Lines)
+                {
+                    int[] indices = shape.GetIndices(i);
+
+                    int count = 0;
+                    while (count < indices.Length)
+                    {
+                        float d = HandleUtility.DistanceToLine(matrix.MultiplyPoint(vertices[indices[count]]), matrix.MultiplyPoint(vertices[indices[count+1]]));
+                        if (d < nearestDistance)
+                            nearestDistance = d;
+
+                        count += 2;
+                    }
+                }
+                else if (topology == MeshTopology.LineStrip)
+                {
+                    int[] indices = shape.GetIndices(i);
+
+                    if (indices.Length > 0)
+                    {
+                        int count = 0;
+                        float d = 0f;
+                        Vector3 v0 = matrix.MultiplyPoint(vertices[indices[count]]);
+                        Vector3 v1 = v0;
+
+                        while (++count < indices.Length)
+                        {
+                            Vector3 v2 = matrix.MultiplyPoint(vertices[indices[count]]);
+
+                            d = HandleUtility.DistanceToLine(v1, v2);
+                            if (d < nearestDistance)
+                                nearestDistance = d;
+
+                            v1 = v2;
+                        }
+
+                        d = HandleUtility.DistanceToLine(v1, v0);
+                        if (d < nearestDistance)
+                            nearestDistance = d;
+                    }
+                }
+            }
+
+            return nearestDistance;
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/Effectors/RigEffector.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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+  serializedVersion: 2
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+  assetBundleVariant: 

Packages/com.unity.animation.rigging/Editor/Effectors/RigEffectorOverlay.cs

@@ -0,0 +1,190 @@
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [CustomOverlay(typeof(RigEffector))]
+    class RigEffectorOverlay : IRigEffectorOverlay
+    {
+        private Object[] m_TargetObjects;
+        private SerializedObject m_SerializedObject;
+
+        private SerializedProperty m_Visible;
+        private SerializedProperty m_Shape;
+        private SerializedProperty m_Color;
+        private SerializedProperty m_Size;
+        private SerializedProperty m_Position;
+        private SerializedProperty m_Rotation;
+
+        private bool m_ExpandOverlay;
+
+        private static GUIContent s_VisibleLabel = new GUIContent("Visible");
+        private static GUIContent s_ShapeLabel = new GUIContent("Shape");
+        private static GUIContent s_ColorLabel = new GUIContent("Color");
+        private static GUIContent s_SizeLabel = new GUIContent("Size");
+        private static GUIContent s_PositionLabel = new GUIContent("Position");
+        private static GUIContent s_RotationLabel = new GUIContent("Rotation");
+
+        private static GUIContent s_RemoveLabel = new GUIContent("Remove");
+
+        private static string s_ExpandOverlayPrefKey = "AnimationRigging.ExpandOverlay";
+
+        private static GUILayoutOption s_FixedWidth = GUILayout.Width(210f);
+
+        public void Initialize(Object[] effectors)
+        {
+            m_TargetObjects = effectors;
+            m_SerializedObject = new SerializedObject(effectors);
+
+            SerializedProperty data = m_SerializedObject.FindProperty("m_Data");
+
+            m_Visible = data.FindPropertyRelative("m_Visible");
+
+            SerializedProperty style = data.FindPropertyRelative("m_Style");
+
+            m_Shape = style.FindPropertyRelative("shape");
+            m_Color = style.FindPropertyRelative("color");
+            m_Size = style.FindPropertyRelative("size");
+            m_Position = style.FindPropertyRelative("position");
+            m_Rotation = style.FindPropertyRelative("rotation");
+
+            m_ExpandOverlay = EditorPrefs.GetBool(s_ExpandOverlayPrefKey, true);
+        }
+
+        private IRigEffectorHolder FetchRigEffectorHolder(Transform transform)
+        {
+            var rigBuilder = EditorHelper.GetClosestComponent<RigBuilder>(transform);
+            var rig = EditorHelper.GetClosestComponent<Rig>(transform, (rigBuilder != null) ? rigBuilder.transform : null);
+
+            if (rigBuilder.ContainsEffector(transform))
+            {
+                return rigBuilder;
+            }
+            else if (rig.ContainsEffector(transform))
+            {
+                return rig;
+            }
+
+            return null;
+        }
+
+        public bool IsValid() => m_SerializedObject.targetObject != null;
+
+        public void OnSceneGUIOverlay()
+        {
+            if (!IsValid())
+                return;
+
+            m_SerializedObject.Update();
+
+            GameObject targetGameObject = null;
+            if (!m_SerializedObject.isEditingMultipleObjects)
+            {
+                RigEffector rigEffector = m_SerializedObject.targetObject as RigEffector;
+                if (rigEffector != null && rigEffector.transform != null)
+                {
+                    targetGameObject = rigEffector.transform.gameObject;
+                }
+            }
+
+            GUILayout.BeginHorizontal(s_FixedWidth);
+
+            EditorGUI.BeginChangeCheck();
+            m_ExpandOverlay = EditorGUILayout.Toggle(m_ExpandOverlay, EditorStyles.foldout, GUILayout.Width(12));
+            if (EditorGUI.EndChangeCheck())
+            {
+                EditorPrefs.SetBool(s_ExpandOverlayPrefKey, m_ExpandOverlay);
+            }
+
+            GUILayout.BeginHorizontal(EditorStyles.toolbar);
+
+            EditorGUILayout.PropertyField(m_Visible, GUIContent.none, GUILayout.Width(17));
+
+            GUILayout.Label((targetGameObject != null) ? targetGameObject.name : "(Multiple objects)");
+
+            if (GUILayout.Button(GUIContent.none, "OL Minus", GUILayout.Width(17)))
+            {
+                UnityEngine.Object[] targetObjects = m_SerializedObject.targetObjects;
+                foreach(var targetObject in targetObjects)
+                {
+                    var effector = targetObject as IRigEffector;
+                    Transform transform = effector.transform;
+
+                    IRigEffectorHolder holder = FetchRigEffectorHolder(transform);
+                    if (holder != null)
+                    {
+                        var holderObject = holder as UnityEngine.Object;
+
+                        Undo.RecordObject(holderObject, "Remove Effector");
+
+                        if (PrefabUtility.IsPartOfPrefabInstance(holderObject))
+                            EditorUtility.SetDirty(holderObject);
+
+                        holder.RemoveEffector(transform);
+                    }
+                }
+            }
+
+            GUILayout.EndHorizontal();
+            GUILayout.EndHorizontal();
+
+            if (m_ExpandOverlay)
+            {
+                EditorGUILayout.LabelField(s_ShapeLabel, s_FixedWidth);
+                EditorGUILayout.PropertyField(m_Shape, GUIContent.none, s_FixedWidth);
+
+                Rect rect = GUILayoutUtility.GetRect(s_ColorLabel, EditorStyles.colorField, s_FixedWidth);
+
+                // Shenanigans to bypass color picker bug.
+                var evt = Event.current;
+                if (evt.type == EventType.MouseUp)
+                {
+                    if (rect.Contains(evt.mousePosition))
+                    {
+                        GUIUtility.hotControl = 0;
+                    }
+                }
+
+                EditorGUI.BeginProperty(rect, s_ColorLabel, m_Color);
+                EditorGUI.BeginChangeCheck();
+                Color newColor = EditorGUI.ColorField(rect, s_ColorLabel, m_Color.colorValue, false, true, false);
+                if (EditorGUI.EndChangeCheck())
+                {
+                    m_Color.colorValue = newColor;
+                }
+                EditorGUI.EndProperty();
+
+                EditorGUILayout.PropertyField(m_Size, s_SizeLabel, s_FixedWidth);
+                EditorGUILayout.PropertyField(m_Position, s_PositionLabel, s_FixedWidth);
+                EditorGUILayout.PropertyField(m_Rotation, s_RotationLabel, s_FixedWidth);
+            }
+
+            if (m_SerializedObject.hasModifiedProperties)
+            {
+                UnityEngine.Object[] targetObjects = m_SerializedObject.targetObjects;
+                foreach(var targetObject in targetObjects)
+                {
+                    var effector = targetObject as IRigEffector;
+                    Transform transform = effector.transform;
+
+                    IRigEffectorHolder holder = FetchRigEffectorHolder(transform);
+                    if (holder != null)
+                    {
+                        var holderObject = holder as UnityEngine.Object;
+                        Undo.RecordObject(holderObject, "Edit Effector");
+
+                        if (PrefabUtility.IsPartOfPrefabInstance(holderObject))
+                            EditorUtility.SetDirty(holderObject);
+                    }
+                }
+
+                m_SerializedObject.ApplyModifiedProperties();
+            }
+        }
+
+        public void Dispose()
+        {
+            m_SerializedObject?.Dispose();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/Effectors/RigEffectorOverlay.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.unity.animation.rigging/Editor/Effectors/RigEffectorRenderer.cs

@@ -0,0 +1,235 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+#if SUPPORTS_SCENE_VIEW_OVERLAYS
+using UnityEditor.Overlays;
+#endif
+using UnityEditor.Experimental.SceneManagement; // required for 2020.2
+using UnityEditor.SceneManagement;
+
+namespace UnityEditor.Animations.Rigging
+{
+    [InitializeOnLoad]
+    static class RigEffectorRenderer
+    {
+        const string k_OverlayId = "Scene View/Animation Rigging";
+        const string k_DisplayName = "Animation Rigging";
+
+        static GUIContent s_OverlayTitle = new GUIContent(k_DisplayName);
+
+        static List<RigBuilder> s_RigBuilders = new List<RigBuilder>();
+        static Dictionary<RigEffectorData, RigEffector> s_Effectors = new Dictionary<RigEffectorData, RigEffector>();
+
+        static Transform[] s_ActiveSelection = null;
+        static List<RigEffector> s_ActiveEffectors = null;
+        static IRigEffectorOverlay s_ActiveOverlay = null;
+
+        static bool s_ActiveOverlayDirtied = true;
+
+        static RigEffectorRenderer()
+        {
+            RigBuilder.onAddRigBuilder += OnAddRigBuilder;
+            RigBuilder.onRemoveRigBuilder += OnRemoveRigBuilder;
+
+            SceneView.duringSceneGui += OnSceneGUI;
+            Selection.selectionChanged += OnSelectionChange;
+            ObjectFactory.componentWasAdded += OnComponentAdded;
+        }
+
+        static void OnSelectionChange()
+        {
+            s_ActiveOverlayDirtied = true;
+        }
+
+        static void OnComponentAdded(Component component)
+        {
+            if (!(component is Rig) && !(component is RigBuilder))
+                return;
+
+            s_ActiveOverlayDirtied = true;
+        }
+
+        static void FetchOrCreateEffectors(IRigEffectorHolder holder)
+        {
+            foreach(var effectorData in holder.effectors)
+            {
+                if (s_Effectors.ContainsKey(effectorData))
+                {
+                    s_ActiveEffectors.Add(s_Effectors[effectorData]);
+                }
+                else
+                {
+                    var newEffector = ScriptableObject.CreateInstance<RigEffector>();
+                    newEffector.Initialize(effectorData);
+
+                    s_Effectors.Add(effectorData, newEffector);
+                    s_ActiveEffectors.Add(newEffector);
+                }
+            }
+        }
+
+        static void FetchOrCreateEffectors()
+        {
+            s_ActiveEffectors = new List<RigEffector>();
+
+            PrefabStage prefabStage = PrefabStageUtility.GetCurrentPrefabStage();
+
+            for (int i = 0; i < s_RigBuilders.Count; i++)
+            {
+                var rigBuilder = s_RigBuilders[i];
+
+                if (rigBuilder == null)
+                    continue;
+
+                if (prefabStage != null)
+                {
+                    StageHandle stageHandle = prefabStage.stageHandle;
+                    if (stageHandle.IsValid() && !stageHandle.Contains(rigBuilder.gameObject))
+                        continue;
+                }
+
+                FetchOrCreateEffectors(rigBuilder);
+
+                var rigs = rigBuilder.GetComponentsInChildren<Rig>();
+                if (rigs != null)
+                {
+                    foreach(var rig in rigs)
+                    {
+                        FetchOrCreateEffectors(rig);
+                    }
+                }
+            }
+        }
+
+        static IRigEffectorOverlay FetchOrCreateEffectorOverlay()
+        {
+            if (!s_ActiveOverlayDirtied && s_ActiveOverlay != null && s_ActiveOverlay.IsValid())
+                return s_ActiveOverlay;
+
+            s_ActiveOverlay?.Dispose();
+
+            Transform[] transforms = Selection.GetTransforms(SelectionMode.ExcludePrefab | SelectionMode.Editable);
+            var inspectedEffectors = new List<Object>();
+
+            for (int i = 0; i < s_ActiveEffectors.Count; ++i)
+            {
+                var effector = s_ActiveEffectors[i];
+                if (effector != null && effector.transform != null)
+                {
+                    if (Selection.Contains(effector.transform) || Selection.Contains(effector.transform.gameObject))
+                    {
+                        inspectedEffectors.Add(s_ActiveEffectors[i]);
+                    }
+                }
+            }
+
+            if (inspectedEffectors.Count > 0)
+            {
+                var overlay = new RigEffectorOverlay();
+                overlay.Initialize(inspectedEffectors.ToArray());
+
+                s_ActiveOverlay = overlay;
+            }
+            else
+            {
+                RigEffectorWizard wizard = null;
+
+                foreach(var transform in transforms)
+                {
+                    RigBuilder rigBuilder = EditorHelper.GetClosestComponent<RigBuilder>(transform);
+                    Rig rig = EditorHelper.GetClosestComponent<Rig>(transform, (rigBuilder != null) ? rigBuilder.transform : null);
+                    IRigEffectorHolder holder = (rig != null) ? (IRigEffectorHolder)rig : (IRigEffectorHolder)rigBuilder;
+
+                    if (holder == null)
+                        continue;
+
+                    if (wizard == null)
+                        wizard = new RigEffectorWizard();
+
+                    wizard.Add(holder, transform);
+                }
+
+                if (wizard != null)
+                {
+                    s_ActiveOverlay = wizard;
+                }
+                else
+                {
+                    s_ActiveOverlay = null;
+                }
+            }
+
+            s_ActiveSelection = transforms;
+
+            s_ActiveOverlayDirtied = false;
+            return s_ActiveOverlay;
+        }
+
+        static void OnSceneGUI(SceneView sceneView)
+        {
+            // Fetch effectors and overlay once in Layout before processing events.
+            if (Event.current.type == EventType.Layout)
+            {
+                FetchOrCreateEffectors();
+                FetchOrCreateEffectorOverlay();
+            }
+
+            // Process effector events.
+            if (s_ActiveEffectors != null)
+            {
+                for (int i = 0; i < s_ActiveEffectors.Count; ++i)
+                {
+                    var effector = s_ActiveEffectors[i];
+                    if (effector == null)
+                        continue;
+
+                    effector.OnSceneGUI();
+                }
+            }
+
+            #if !SUPPORTS_SCENE_VIEW_OVERLAYS
+            // Process overlay events.
+            if (s_ActiveOverlay != null)
+            {
+                SceneViewOverlay.Begin(sceneView);
+                SceneViewOverlay.Window(s_OverlayTitle, SceneViewGUICallback, 1200);
+                SceneViewOverlay.End();
+            }
+            #endif
+        }
+
+        static void OnAddRigBuilder(RigBuilder rigBuilder)
+        {
+            s_RigBuilders.Add(rigBuilder);
+        }
+
+        static void OnRemoveRigBuilder(RigBuilder rigBuilder)
+        {
+            s_RigBuilders.Remove(rigBuilder);
+            s_Effectors.Clear();
+        }
+
+        private static void SceneViewGUICallback(UnityEngine.Object target, SceneView sceneView)
+        {
+            if (s_ActiveOverlay != null)
+                s_ActiveOverlay.OnSceneGUIOverlay();
+        }
+
+        #if SUPPORTS_SCENE_VIEW_OVERLAYS
+        [Overlay(typeof(SceneView), k_OverlayId, k_DisplayName)]
+        class Overlay : IMGUIOverlay, ITransientOverlay
+        {
+            public bool visible
+            {
+                get => s_ActiveOverlay != null;
+            }
+
+            public override void OnGUI()
+            {
+                if (s_ActiveOverlay != null)
+                    s_ActiveOverlay.OnSceneGUIOverlay();
+            }
+        }
+        #endif
+    }
+}

Packages/com.unity.animation.rigging/Editor/Effectors/RigEffectorRenderer.cs.meta

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Packages/com.unity.animation.rigging/Editor/Effectors/RigEffectorWizard.cs

@@ -0,0 +1,68 @@
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    class RigEffectorWizard : IRigEffectorOverlay
+    {
+        private static GUIContent s_CreateEffectorLabel = new GUIContent("Create Effector");
+
+        private struct HolderTransformPair
+        {
+            public IRigEffectorHolder holder;
+            public Transform transform;
+        }
+
+        private List<HolderTransformPair> m_Transforms = new List<HolderTransformPair>();
+
+        public void Add(IRigEffectorHolder holder, Transform transform)
+        {
+            m_Transforms.Add(new HolderTransformPair() { holder = holder, transform = transform });
+        }
+
+        public bool IsValid() => true;
+
+        public void OnSceneGUIOverlay()
+        {
+            string labelName = "(no selection)";
+            if (m_Transforms.Count > 1)
+            {
+                labelName = "(Multiple objects)";
+            }
+            else if (m_Transforms.Count > 0)
+            {
+                if (m_Transforms[0].transform.gameObject != null)
+                {
+                    labelName = m_Transforms[0].transform.gameObject.name;
+                }
+            }
+
+            GUILayout.BeginHorizontal(EditorStyles.toolbar, GUILayout.Width(210.0f));
+
+            GUILayout.Label(labelName);
+
+            if (GUILayout.Button(GUIContent.none, "OL Plus", GUILayout.Width(17)))
+            {
+                foreach (var pair in m_Transforms)
+                {
+                    var targetObject = pair.holder as UnityEngine.Object;
+
+                    Undo.RecordObject(targetObject, "Add Effector");
+
+                    if (PrefabUtility.IsPartOfPrefabInstance(targetObject))
+                        EditorUtility.SetDirty(targetObject);
+
+                    pair.holder.AddEffector(pair.transform, RigEffector.defaultStyle);
+                }
+            }
+
+            GUILayout.EndHorizontal();
+        }
+
+        public void Dispose()
+        {
+            // nothing to do.
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/Effectors/RigEffectorWizard.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiAimInverseConstraintJob.cs

@@ -0,0 +1,130 @@
+using Unity.Collections;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The MultiAim inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct MultiAimInverseConstraintJob : IWeightedAnimationJob
+    {
+        const float k_Epsilon = 1e-5f;
+
+        /// <summary>The Transform handle for the constrained object Transform.</summary>
+        public ReadOnlyTransformHandle driven;
+        /// <summary>The Transform handle for the constrained object parent Transform.</summary>
+        public ReadOnlyTransformHandle drivenParent;
+        /// <summary>The post-rotation offset applied to the constrained object.</summary>
+        public Vector3Property drivenOffset;
+
+        /// <summary>List of Transform handles for the source objects.</summary>
+        public NativeArray<ReadWriteTransformHandle> sourceTransforms;
+        /// <summary>List of weights for the source objects.</summary>
+        public NativeArray<PropertyStreamHandle> sourceWeights;
+        /// <summary>List of offsets to apply to source rotations if maintainOffset is enabled.</summary>
+        public NativeArray<Quaternion> sourceOffsets;
+
+        /// <summary>Buffer used to store weights during job execution.</summary>
+        public NativeArray<float> weightBuffer;
+
+        /// <summary>Local axis of the constrained object Transform.</summary>
+        public Vector3 aimAxis;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            var lRot = driven.GetLocalRotation(stream);
+            var offset = drivenOffset.Get(stream);
+
+            if (Vector3.Dot(offset, offset) > 0f)
+                lRot *= Quaternion.Inverse(Quaternion.Euler(offset));
+
+            var localToWorld = Quaternion.identity;
+            var wPos = driven.GetPosition(stream);
+            if (drivenParent.IsValid(stream))
+                localToWorld = drivenParent.GetRotation(stream);
+
+            for (int i = 0; i < sourceTransforms.Length; ++i)
+            {
+                sourceWeights[i].SetFloat(stream, 1f);
+
+                var sourceTransform = sourceTransforms[i];
+
+                sourceTransform.SetPosition(stream, wPos + localToWorld * sourceOffsets[i] * lRot * aimAxis);
+
+                // Required to update handles with binding info.
+                sourceTransforms[i] = sourceTransform;
+            }
+        }
+    }
+
+    /// <summary>
+    /// The MultiAim inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class MultiAimInverseConstraintJobBinder<T> : AnimationJobBinder<MultiAimInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, IMultiAimConstraintData
+    {
+        /// <inheritdoc />
+        public override MultiAimInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new MultiAimInverseConstraintJob();
+
+            job.driven = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject);
+            job.drivenParent = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject.parent);
+            job.drivenOffset = Vector3Property.Bind(animator, component, data.offsetVector3Property);
+            job.aimAxis = data.aimAxis;
+
+            WeightedTransformArray sourceObjects = data.sourceObjects;
+
+            WeightedTransformArrayBinder.BindReadWriteTransforms(animator, component, sourceObjects, out job.sourceTransforms);
+            WeightedTransformArrayBinder.BindWeights(animator, component, sourceObjects, data.sourceObjectsProperty, out job.sourceWeights);
+
+            job.sourceOffsets = new NativeArray<Quaternion>(sourceObjects.Count, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+            for (int i = 0; i < sourceObjects.Count; ++i)
+            {
+                if (data.maintainOffset)
+                {
+                    var aimDirection = data.constrainedObject.rotation * data.aimAxis;
+                    var dataToSource = sourceObjects[i].transform.position - data.constrainedObject.position;
+                    var rot = QuaternionExt.FromToRotation(dataToSource, aimDirection);
+                    job.sourceOffsets[i] = Quaternion.Inverse(rot);
+                }
+                else
+                {
+                    job.sourceOffsets[i] = Quaternion.identity;
+                }
+            }
+
+            job.weightBuffer = new NativeArray<float>(sourceObjects.Count, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(MultiAimInverseConstraintJob job)
+        {
+            job.sourceTransforms.Dispose();
+            job.sourceWeights.Dispose();
+            job.sourceOffsets.Dispose();
+            job.weightBuffer.Dispose();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiAimInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiParentInverseConstraintJob.cs

@@ -0,0 +1,116 @@
+using Unity.Collections;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The MultiParent inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct MultiParentInverseConstraintJob : IWeightedAnimationJob
+    {
+        const float k_Epsilon = 1e-5f;
+
+        /// <summary>The Transform handle for the constrained object Transform.</summary>
+        public ReadOnlyTransformHandle driven;
+        /// <summary>The Transform handle for the constrained object parent Transform.</summary>
+        public ReadOnlyTransformHandle drivenParent;
+
+        /// <summary>List of Transform handles for the source objects.</summary>
+        public NativeArray<ReadWriteTransformHandle> sourceTransforms;
+        /// <summary>List of weights for the source objects.</summary>
+        public NativeArray<PropertyStreamHandle> sourceWeights;
+        /// <summary>List of offsets to apply to source rotations if maintainOffset is enabled.</summary>
+        public NativeArray<AffineTransform> sourceOffsets;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            driven.GetGlobalTR(stream, out Vector3 currentWPos, out Quaternion currentWRot);
+            var drivenTx = new AffineTransform(currentWPos, currentWRot);
+
+            for (int i = 0; i < sourceTransforms.Length; ++i)
+            {
+                sourceWeights[i].SetFloat(stream, 1f);
+
+                var sourceTransform = sourceTransforms[i];
+                sourceTransform.GetGlobalTR(stream, out var sourcePosition, out var sourceRotation);
+
+                var result = drivenTx;
+                result *= sourceOffsets[i];
+
+                sourceTransform.SetGlobalTR(stream, result.translation, result.rotation);
+                sourceTransforms[i] = sourceTransform;
+            }
+        }
+    }
+
+    /// <summary>
+    /// The MultiParent inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class MultiParentInverseConstraintJobBinder<T> : AnimationJobBinder<MultiParentInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, IMultiParentConstraintData
+    {
+        /// <inheritdoc />
+        public override MultiParentInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new MultiParentInverseConstraintJob();
+
+            job.driven = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject);
+            job.drivenParent = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject.parent);
+
+            WeightedTransformArray sourceObjects = data.sourceObjects;
+
+            WeightedTransformArrayBinder.BindReadWriteTransforms(animator, component, sourceObjects, out job.sourceTransforms);
+            WeightedTransformArrayBinder.BindWeights(animator, component, sourceObjects, data.sourceObjectsProperty, out job.sourceWeights);
+
+            job.sourceOffsets = new NativeArray<AffineTransform>(sourceObjects.Count, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+
+            var drivenTx = new AffineTransform(data.constrainedObject.position, data.constrainedObject.rotation);
+            for (int i = 0; i < sourceObjects.Count; ++i)
+            {
+                var sourceTransform = sourceObjects[i].transform;
+
+                var srcTx = new AffineTransform(sourceTransform.position, sourceTransform.rotation);
+                var srcOffset = AffineTransform.identity;
+                var tmp = srcTx.InverseMul(drivenTx);
+
+                if (data.maintainPositionOffset)
+                    srcOffset.translation = tmp.translation;
+                if (data.maintainRotationOffset)
+                    srcOffset.rotation = tmp.rotation;
+
+                srcOffset = srcOffset.Inverse();
+
+                job.sourceOffsets[i] = srcOffset;
+            }
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(MultiParentInverseConstraintJob job)
+        {
+            job.sourceTransforms.Dispose();
+            job.sourceWeights.Dispose();
+            job.sourceOffsets.Dispose();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiParentInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiPositionInverseConstraintJob.cs

@@ -0,0 +1,116 @@
+using Unity.Collections;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The MultiPosition inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct MultiPositionInverseConstraintJob : IWeightedAnimationJob
+    {
+        const float k_Epsilon = 1e-5f;
+
+        /// <summary>The Transform handle for the constrained object Transform.</summary>
+        public ReadOnlyTransformHandle driven;
+        /// <summary>The Transform handle for the constrained object parent Transform.</summary>
+        public ReadOnlyTransformHandle drivenParent;
+        /// <summary>The post-translation offset applied to the constrained object.</summary>
+        public Vector3Property drivenOffset;
+
+        /// <summary>List of Transform handles for the source objects.</summary>
+        public NativeArray<ReadWriteTransformHandle> sourceTransforms;
+        /// <summary>List of weights for the source objects.</summary>
+        public NativeArray<PropertyStreamHandle> sourceWeights;
+        /// <summary>List of offsets to apply to source rotations if maintainOffset is enabled.</summary>
+        public NativeArray<Vector3> sourceOffsets;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            var parentTx = new AffineTransform();
+            if (drivenParent.IsValid(stream))
+            {
+                drivenParent.GetGlobalTR(stream, out Vector3 parentWPos, out Quaternion parentWRot);
+                parentTx = new AffineTransform(parentWPos, parentWRot);
+            }
+
+            var drivenPos = driven.GetPosition(stream);
+            drivenPos = parentTx.InverseTransform(drivenPos);
+
+            var offset = drivenOffset.Get(stream);
+
+            var lPos = drivenPos - offset;
+
+            var wPos = parentTx.Transform(lPos);
+            for (int i = 0; i < sourceTransforms.Length; ++i)
+            {
+                sourceWeights[i].SetFloat(stream, 1f);
+
+                ReadWriteTransformHandle sourceTransform = sourceTransforms[i];
+
+                sourceTransform.SetPosition(stream, wPos - sourceOffsets[i]);
+
+                // Required to update handles with binding info.
+                sourceTransforms[i] = sourceTransform;
+            }
+        }
+    }
+
+    /// <summary>
+    /// The MultiPosition inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class MultiPositionInverseConstraintJobBinder<T> : AnimationJobBinder<MultiPositionInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, IMultiPositionConstraintData
+    {
+        /// <inheritdoc />
+        public override MultiPositionInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new MultiPositionInverseConstraintJob();
+
+            job.driven = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject);
+            job.drivenParent = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject.parent);
+            job.drivenOffset = Vector3Property.Bind(animator, component, data.offsetVector3Property);
+
+            WeightedTransformArray sourceObjects = data.sourceObjects;
+
+            WeightedTransformArrayBinder.BindReadWriteTransforms(animator, component, sourceObjects, out job.sourceTransforms);
+            WeightedTransformArrayBinder.BindWeights(animator, component, sourceObjects, data.sourceObjectsProperty, out job.sourceWeights);
+
+            job.sourceOffsets = new NativeArray<Vector3>(sourceObjects.Count, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+
+            Vector3 drivenPos = data.constrainedObject.position;
+            for (int i = 0; i < sourceObjects.Count; ++i)
+            {
+                job.sourceOffsets[i] = data.maintainOffset ? (drivenPos - sourceObjects[i].transform.position) : Vector3.zero;
+            }
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(MultiPositionInverseConstraintJob job)
+        {
+            job.sourceTransforms.Dispose();
+            job.sourceWeights.Dispose();
+            job.sourceOffsets.Dispose();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiPositionInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiReferentialInverseConstraintJob.cs

@@ -0,0 +1,96 @@
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+using Unity.Collections;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The MultiReferential inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct MultiReferentialInverseConstraintJob : IWeightedAnimationJob
+    {
+        /// <summary>The list of Transforms that are affected by the specified driver.</summary>
+        public NativeArray<ReadWriteTransformHandle> sources;
+        /// <summary>List of AffineTransform to apply to driven source objects.</summary>
+        public NativeArray<AffineTransform> offsetTx;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            sources[0].GetGlobalTR(stream, out Vector3 driverWPos, out Quaternion driverWRot);
+            var driverTx = new AffineTransform(driverWPos, driverWRot);
+
+            int offset = 0;
+            for (int i = 1; i < sources.Length; ++i)
+            {
+                var tx = driverTx * offsetTx[offset];
+
+                var src = sources[i];
+                src.GetGlobalTR(stream, out Vector3 srcWPos, out Quaternion srcWRot);
+                src.SetGlobalTR(stream, tx.translation, tx.rotation);
+                offset++;
+
+                sources[i] = src;
+            }
+        }
+    }
+
+    /// <summary>
+    /// The MultiReferential inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class MultiReferentialInverseConstraintJobBinder<T> : AnimationJobBinder<MultiReferentialInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, IMultiReferentialConstraintData
+    {
+        /// <inheritdoc />
+        public override MultiReferentialInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new MultiReferentialInverseConstraintJob();
+
+            var sources = data.sourceObjects;
+            job.sources = new NativeArray<ReadWriteTransformHandle>(sources.Length, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+            job.offsetTx = new NativeArray<AffineTransform>(sources.Length - 1, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+
+            var sourceBindTx = new AffineTransform[sources.Length];
+
+            for (int i = 0; i < sources.Length; ++i)
+            {
+                job.sources[i] = ReadWriteTransformHandle.Bind(animator, sources[i].transform);
+                sourceBindTx[i] = new AffineTransform(sources[i].position, sources[i].rotation);
+            }
+
+            int offset = 0;
+            var invDriverTx = sourceBindTx[0].Inverse();
+            for (int i = 1; i < sourceBindTx.Length; ++i)
+            {
+                job.offsetTx[offset] = invDriverTx * sourceBindTx[i];
+                offset++;
+            }
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(MultiReferentialInverseConstraintJob job)
+        {
+            job.sources.Dispose();
+            job.offsetTx.Dispose();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiReferentialInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiRotationInverseConstraintJob.cs

@@ -0,0 +1,120 @@
+using Unity.Collections;
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The MultiRotation inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct MultiRotationInverseConstraintJob : IWeightedAnimationJob
+    {
+        const float k_Epsilon = 1e-5f;
+
+        /// <summary>The Transform handle for the constrained object Transform.</summary>
+        public ReadOnlyTransformHandle driven;
+        /// <summary>The Transform handle for the constrained object parent Transform.</summary>
+        public ReadOnlyTransformHandle drivenParent;
+        /// <summary>The post-rotation offset applied to the constrained object.</summary>
+        public Vector3Property drivenOffset;
+
+        /// <summary>List of Transform handles for the source objects.</summary>
+        public NativeArray<ReadWriteTransformHandle> sourceTransforms;
+        /// <summary>List of weights for the source objects.</summary>
+        public NativeArray<PropertyStreamHandle> sourceWeights;
+        /// <summary>List of offsets to apply to source rotations if maintainOffset is enabled.</summary>
+        public NativeArray<Quaternion> sourceOffsets;
+
+        /// <summary>Buffer used to store weights during job execution.</summary>
+        public NativeArray<float> weightBuffer;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            var lRot = driven.GetLocalRotation(stream);
+            var offset = drivenOffset.Get(stream);
+
+            if (Vector3.Dot(offset, offset) > 0f)
+                lRot *= Quaternion.Inverse(Quaternion.Euler(offset));
+
+            var wRot = lRot;
+            if (drivenParent.IsValid(stream))
+            {
+                wRot = drivenParent.GetRotation(stream) * wRot;
+            }
+
+            for (int i = 0; i < sourceTransforms.Length; ++i)
+            {
+                sourceWeights[i].SetFloat(stream, 1f);
+
+                ReadWriteTransformHandle sourceTransform = sourceTransforms[i];
+
+                sourceTransform.SetRotation(stream, wRot * sourceOffsets[i]);
+
+                // Required to update handles with binding info.
+                sourceTransforms[i] = sourceTransform;
+            }
+        }
+    }
+
+    /// <summary>
+    /// The MultiRotation inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class MultiRotationInverseConstraintJobBinder<T> : AnimationJobBinder<MultiRotationInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, IMultiRotationConstraintData
+    {
+        /// <inheritdoc />
+        public override MultiRotationInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new MultiRotationInverseConstraintJob();
+
+            job.driven = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject);
+            job.drivenParent = ReadOnlyTransformHandle.Bind(animator, data.constrainedObject.parent);
+            job.drivenOffset = Vector3Property.Bind(animator, component, data.offsetVector3Property);
+
+            WeightedTransformArray sourceObjects = data.sourceObjects;
+
+            WeightedTransformArrayBinder.BindReadWriteTransforms(animator, component, sourceObjects, out job.sourceTransforms);
+            WeightedTransformArrayBinder.BindWeights(animator, component, sourceObjects, data.sourceObjectsProperty, out job.sourceWeights);
+
+            job.sourceOffsets = new NativeArray<Quaternion>(sourceObjects.Count, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+
+            job.weightBuffer = new NativeArray<float>(sourceObjects.Count, Allocator.Persistent, NativeArrayOptions.UninitializedMemory);
+
+            Quaternion drivenRotInv = Quaternion.Inverse(data.constrainedObject.rotation);
+            for (int i = 0; i < sourceObjects.Count; ++i)
+            {
+                job.sourceOffsets[i] = data.maintainOffset ?
+                    (drivenRotInv * sourceObjects[i].transform.rotation) : Quaternion.identity;
+            }
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(MultiRotationInverseConstraintJob job)
+        {
+            job.sourceTransforms.Dispose();
+            job.sourceWeights.Dispose();
+            job.sourceOffsets.Dispose();
+            job.weightBuffer.Dispose();
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/MultiRotationInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/TwistChainInverseConstraintJob.cs

@@ -0,0 +1,74 @@
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The TwistChain inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct TwistChainInverseConstraintJob : IWeightedAnimationJob
+    {
+        /// <summary>The Transform handle for the root Transform of the chain.</summary>
+        public ReadOnlyTransformHandle root;
+        /// <summary>The Transform handle for the tip Transform of the chain.</summary>
+        public ReadOnlyTransformHandle tip;
+
+        /// <summary>The Transform handle for the root target Transform.</summary>
+        public ReadWriteTransformHandle rootTarget;
+        /// <summary>The Transform handle for the tip target Transform.</summary>
+        public ReadWriteTransformHandle tipTarget;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            rootTarget.SetPosition(stream, root.GetPosition(stream));
+            rootTarget.SetRotation(stream, root.GetRotation(stream));
+
+            tipTarget.SetPosition(stream, tip.GetPosition(stream));
+            tipTarget.SetRotation(stream, tip.GetRotation(stream));
+        }
+    }
+
+    /// <summary>
+    /// The TwistChain inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class TwistChainInverseConstraintJobBinder<T> : AnimationJobBinder<TwistChainInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, ITwistChainConstraintData
+    {
+        /// <inheritdoc />
+        public override TwistChainInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new TwistChainInverseConstraintJob();
+
+            job.root = ReadOnlyTransformHandle.Bind(animator, data.root);
+            job.tip = ReadOnlyTransformHandle.Bind(animator, data.tip);
+
+            job.rootTarget = ReadWriteTransformHandle.Bind(animator, data.rootTarget);
+            job.tipTarget = ReadWriteTransformHandle.Bind(animator, data.tipTarget);
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(TwistChainInverseConstraintJob job)
+        {
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/TwistChainInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/TwoBoneIKInverseConstraintJob.cs

@@ -0,0 +1,99 @@
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// The TwoBoneIK inverse constraint job.
+    /// </summary>
+    [Unity.Burst.BurstCompile]
+    public struct TwoBoneIKInverseConstraintJob : IWeightedAnimationJob
+    {
+        const float k_SqrEpsilon = 1e-8f;
+
+        /// <summary>The transform handle for the root transform.</summary>
+        public ReadOnlyTransformHandle root;
+        /// <summary>The transform handle for the mid transform.</summary>
+        public ReadOnlyTransformHandle mid;
+        /// <summary>The transform handle for the tip transform.</summary>
+        public ReadOnlyTransformHandle tip;
+
+        /// <summary>The transform handle for the hint transform.</summary>
+        public ReadWriteTransformHandle hint;
+        /// <summary>The transform handle for the target transform.</summary>
+        public ReadWriteTransformHandle target;
+
+        /// <summary>The offset applied to the target transform if maintainTargetPositionOffset or maintainTargetRotationOffset is enabled.</summary>
+        public AffineTransform targetOffset;
+
+        /// <summary>The weight for which target position has an effect on IK calculations. This is a value in between 0 and 1.</summary>
+        public FloatProperty targetPositionWeight;
+        /// <summary>The weight for which target rotation has an effect on IK calculations. This is a value in between 0 and 1.</summary>
+        public FloatProperty targetRotationWeight;
+        /// <summary>The weight for which hint transform has an effect on IK calculations. This is a value in between 0 and 1.</summary>
+        public FloatProperty hintWeight;
+
+        /// <inheritdoc />
+        public FloatProperty jobWeight { get; set; }
+
+        /// <summary>
+        /// Defines what to do when processing the root motion.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessRootMotion(AnimationStream stream) { }
+
+        /// <summary>
+        /// Defines what to do when processing the animation.
+        /// </summary>
+        /// <param name="stream">The animation stream to work on.</param>
+        public void ProcessAnimation(AnimationStream stream)
+        {
+            jobWeight.Set(stream, 1f);
+
+            AnimationRuntimeUtils.InverseSolveTwoBoneIK(stream, root, mid, tip, target, hint,
+                targetPositionWeight.Get(stream),
+                targetRotationWeight.Get(stream),
+                hintWeight.Get(stream), targetOffset);
+        }
+    }
+
+    /// <summary>
+    /// The TwoBoneIK inverse constraint job binder.
+    /// </summary>
+    /// <typeparam name="T">The constraint data type</typeparam>
+    public class TwoBoneIKInverseConstraintJobBinder<T> : AnimationJobBinder<TwoBoneIKInverseConstraintJob, T>
+        where T : struct, IAnimationJobData, ITwoBoneIKConstraintData
+    {
+        /// <inheritdoc />
+        public override TwoBoneIKInverseConstraintJob Create(Animator animator, ref T data, Component component)
+        {
+            var job = new TwoBoneIKInverseConstraintJob();
+
+            job.root = ReadOnlyTransformHandle.Bind(animator, data.root);
+            job.mid = ReadOnlyTransformHandle.Bind(animator, data.mid);
+            job.tip = ReadOnlyTransformHandle.Bind(animator, data.tip);
+            job.target = ReadWriteTransformHandle.Bind(animator, data.target);
+
+            if (data.hint != null)
+                job.hint = ReadWriteTransformHandle.Bind(animator, data.hint);
+
+            job.targetOffset = AffineTransform.identity;
+            if (data.maintainTargetPositionOffset)
+                job.targetOffset.translation = -(data.tip.position - data.target.position);
+            if (data.maintainTargetRotationOffset)
+                job.targetOffset.rotation = Quaternion.Inverse(data.tip.rotation) * data.target.rotation;
+
+            job.targetPositionWeight = FloatProperty.Bind(animator, component, data.targetPositionWeightFloatProperty);
+            job.targetRotationWeight = FloatProperty.Bind(animator, component, data.targetRotationWeightFloatProperty);
+            job.hintWeight = FloatProperty.Bind(animator, component, data.hintWeightFloatProperty);
+
+            return job;
+        }
+
+        /// <inheritdoc />
+        public override void Destroy(TwoBoneIKInverseConstraintJob job)
+        {
+        }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/AnimationJobs/TwoBoneIKInverseConstraintJob.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiAimInverseConstraint.cs

@@ -0,0 +1,24 @@
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// MultiAim inverse constraint.
+    /// </summary>
+    /// <seealso cref="MultiAimConstraint"/>
+    [InverseRigConstraint(typeof(MultiAimConstraint))]
+    public class MultiAimInverseConstraint : OverrideRigConstraint<
+        MultiAimConstraint,
+        MultiAimInverseConstraintJob,
+        MultiAimConstraintData,
+        MultiAimInverseConstraintJobBinder<MultiAimConstraintData>
+        >
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="baseConstraint">Base constraint to override.</param>
+        public MultiAimInverseConstraint(MultiAimConstraint baseConstraint) : base(baseConstraint) {}
+    }
+}
+

Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiAimInverseConstraint.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiParentInverseConstraint.cs

@@ -0,0 +1,25 @@
+using UnityEngine;
+using UnityEngine.Animations;
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// MultiParent inverse constraint.
+    /// </summary>
+    /// <seealso cref="MultiParentConstraint"/>
+    [InverseRigConstraint(typeof(MultiParentConstraint))]
+    public class MultiParentInverseConstraint : OverrideRigConstraint<
+        MultiParentConstraint,
+        MultiParentInverseConstraintJob,
+        MultiParentConstraintData,
+        MultiParentInverseConstraintJobBinder<MultiParentConstraintData>
+        >
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="baseConstraint">Base constraint to override.</param>
+        public MultiParentInverseConstraint(MultiParentConstraint baseConstraint) : base(baseConstraint) { }
+    }
+}

Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiParentInverseConstraint.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiPositionInverseConstraint.cs

@@ -0,0 +1,24 @@
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// MultiPosition inverse constraint.
+    /// </summary>
+    /// <seealso cref="MultiPositionConstraint"/>
+    [InverseRigConstraint(typeof(MultiPositionConstraint))]
+    public class MultiPositionInverseConstraint : OverrideRigConstraint<
+        MultiPositionConstraint,
+        MultiPositionInverseConstraintJob,
+        MultiPositionConstraintData,
+        MultiPositionInverseConstraintJobBinder<MultiPositionConstraintData>
+        >
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="baseConstraint">Base constraint to override.</param>
+        public MultiPositionInverseConstraint(MultiPositionConstraint baseConstraint) : base(baseConstraint) {}
+    }
+}
+

Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiPositionInverseConstraint.cs.meta

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Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiReferentialInverseConstraint.cs

@@ -0,0 +1,23 @@
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// MultiReferential inverse constraint.
+    /// </summary>
+    [InverseRigConstraint(typeof(MultiReferentialConstraint))]
+    public class MultiReferentialInverseConstraint : OverrideRigConstraint<
+        MultiReferentialConstraint,
+        MultiReferentialInverseConstraintJob,
+        MultiReferentialConstraintData,
+        MultiReferentialInverseConstraintJobBinder<MultiReferentialConstraintData>
+        >
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="baseConstraint">Base constraint to override.</param>
+        public MultiReferentialInverseConstraint(MultiReferentialConstraint baseConstraint) : base(baseConstraint) {}
+    }
+}
+

Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiReferentialInverseConstraint.cs.meta

@@ -0,0 +1,11 @@
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Packages/com.unity.animation.rigging/Editor/InverseSolve/Constraints/MultiRotationInverseConstraint.cs

@@ -0,0 +1,24 @@
+using UnityEngine.Animations.Rigging;
+
+namespace UnityEditor.Animations.Rigging
+{
+    /// <summary>
+    /// MultiRotation inverse constraint.
+    /// </summary>
+    /// <seealso cref="MultiRotationConstraint"/>
+    [InverseRigConstraint(typeof(MultiRotationConstraint))]
+    public class MultiRotationInverseConstraint : OverrideRigConstraint<
+        MultiRotationConstraint,
+        MultiRotationInverseConstraintJob,
+        MultiRotationConstraintData,
+        MultiRotationInverseConstraintJobBinder<MultiRotationConstraintData>
+        >
+    {
+        /// <summary>
+        /// Constructor.
+        /// </summary>
+        /// <param name="baseConstraint">Base constraint to override.</param>
+        public MultiRotationInverseConstraint(MultiRotationConstraint baseConstraint) : base(baseConstraint) {}
+    }
+}
+