feat: add Object Toggle component (#942)

* feat: add Object Toggle component

* docs: Object Toggle docs

* chore: add missing HelpURL

* chore: fix broken test

Editor/Animation/AnimationServicesContext.cs

@@ -116,8 +116,20 @@ namespace nadena.dev.modular_avatar.animation
                 return false;
             }
 
-            paramName = _readableProperty.ForActiveSelf(_pathMappings.GetObjectIdentifier(obj));
+            paramName = _readableProperty.ForActiveSelf(path);
             return true;
         }
+
+        public string ForceGetActiveSelfProxy(GameObject obj)
+        {
+            if (_selfProxies.TryGetValue(obj, out var paramName) && !string.IsNullOrEmpty(paramName)) return paramName;
+
+            var path = PathMappings.GetObjectIdentifier(obj);
+
+            paramName = _readableProperty.ForActiveSelf(path);
+            _selfProxies[obj] = paramName;
+
+            return paramName;
+        }
     }
 }

Editor/Inspector/ObjectToggle.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 61045dcdc7f24658a5b47fb0b67ab9fe
+timeCreated: 1722736548

Editor/Inspector/ObjectToggle/ObjectSwitcher.uxml

@@ -0,0 +1,22 @@
+<UXML xmlns:ui="UnityEngine.UIElements"
+      xmlns:ma="nadena.dev.modular_avatar.core.editor">
+    <ui:VisualElement name="root-box">
+        <ui:VisualElement name="group-box">
+            <ui:VisualElement name="ListViewContainer">
+                <ui:ListView virtualization-method="DynamicHeight"
+                             reorder-mode="Animated"
+                             reorderable="true"
+                             show-add-remove-footer="true"
+                             show-border="true"
+                             show-foldout-header="false"
+                             name="Shapes"
+                             item-height="100"
+                             binding-path="m_objects"
+                             style="flex-grow: 1;"
+                />
+            </ui:VisualElement>
+        </ui:VisualElement>
+
+        <ma:LanguageSwitcherElement/>
+    </ui:VisualElement>
+</UXML>

Editor/Inspector/ObjectToggle/ObjectSwitcher.uxml.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 02f9cb4b3be34457870f111d73e2fd2f
+timeCreated: 1722736548

Editor/Inspector/ObjectToggle/ObjectSwitcherEditor.cs

@@ -0,0 +1,41 @@
+#region
+
+using System;
+using UnityEditor;
+using UnityEditor.UIElements;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+#endregion
+
+namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
+{
+    [CustomEditor(typeof(ModularAvatarObjectToggle))]
+    public class ObjectSwitcherEditor : MAEditorBase
+    {
+        [SerializeField] private StyleSheet uss;
+        [SerializeField] private VisualTreeAsset uxml;
+
+
+        protected override void OnInnerInspectorGUI()
+        {
+            throw new NotImplementedException();
+        }
+
+        protected override VisualElement CreateInnerInspectorGUI()
+        {
+            var root = uxml.CloneTree();
+            Localization.UI.Localize(root);
+            root.styleSheets.Add(uss);
+
+            root.Bind(serializedObject);
+
+            var listView = root.Q<ListView>("Shapes");
+
+            listView.showBoundCollectionSize = false;
+            listView.virtualizationMethod = CollectionVirtualizationMethod.DynamicHeight;
+
+            return root;
+        }
+    }
+}

Editor/Inspector/ObjectToggle/ObjectSwitcherEditor.cs.meta

@@ -0,0 +1,13 @@
+fileFormatVersion: 2
+guid: a77f3b5f35d04831a7896261cabd3370
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences:
+  - uss: {fileID: 7433441132597879392, guid: b7559b81cea245b68c66602ea0cbbbcf, type: 3}
+  - uxml: {fileID: 9197481963319205126, guid: 02f9cb4b3be34457870f111d73e2fd2f, type: 3}
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Editor/Inspector/ObjectToggle/ObjectSwitcherStyles.uss

@@ -0,0 +1,114 @@
+VisualElement {
+}
+
+#group-box {
+    margin-top: 4px;
+    margin-bottom: 4px;
+    padding: 4px;
+    border-width: 3px;
+    border-left-color: rgba(0, 1, 0, 0.2);
+    border-top-color: rgba(0, 1, 0, 0.2);
+    border-right-color: rgba(0, 1, 0, 0.2);
+    border-bottom-color: rgba(0, 1, 0, 0.2);
+    border-radius: 4px;
+    /* background-color: rgba(0, 0, 0, 0.1); */
+}
+
+#ListViewContainer {
+    margin-top: 4px;
+}
+
+#group-box > Label {
+    -unity-font-style: bold;
+}
+
+.group-root {
+    margin-top: 4px;
+}
+
+.group-root Toggle {
+    margin-left: 0;
+}
+
+.group-children {
+    padding-left: 10px;
+}
+
+.left-toggle {
+    display: flex;
+    flex-direction: row;
+}
+
+.toggled-object-editor {
+    flex-direction: row;
+    justify-content: center;
+    align-items: center;
+}
+
+.toggled-object-editor #f-object {
+    flex-grow: 1;
+    height: 100%;
+}
+
+#f-active > Toggle {
+    margin-top: 0;
+    margin-bottom: 0;
+    margin-left: -12px;
+    margin-right: 3px;
+}
+
+.toggled-object-editor PropertyField Label {
+    display: none;
+}
+
+#f-change-type {
+    width: 75px;
+}
+
+.f-value {
+    width: 40px;
+}
+
+#f-value-delete {
+    display: none;
+}
+
+.change-type-delete #f-value {
+    display: none;
+}
+
+.change-type-delete #f-value-delete {
+    display: flex;
+}
+
+/* Add shape window */
+
+.add-shape-popup {
+    margin: 2px;
+}
+
+.vline {
+    width: 100%;
+    height: 4px;
+    border-top-width: 4px;
+    margin-top: 2px;
+    margin-bottom: 2px;
+    border-top-color: rgba(0, 0, 0, 0.2);
+}
+
+.add-shape-row {
+    flex-direction: row;
+}
+
+.add-shape-row Button {
+    flex-grow: 0;
+}
+
+.add-shape-popup ScrollView Label.placeholder {
+    -unity-text-align: middle-center;
+}
+
+.add-shape-row Label {
+    flex-grow: 1;
+    -unity-text-align: middle-left;
+}

Editor/Inspector/ObjectToggle/ObjectSwitcherStyles.uss.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: b7559b81cea245b68c66602ea0cbbbcf
+timeCreated: 1722736548

Editor/Inspector/ObjectToggle/ToggledObjectEditor.cs

@@ -0,0 +1,30 @@
+#region
+
+using UnityEditor;
+using UnityEditor.UIElements;
+using UnityEngine.UIElements;
+
+#endregion
+
+namespace nadena.dev.modular_avatar.core.editor.ShapeChanger
+{
+    [CustomPropertyDrawer(typeof(ToggledObject))]
+    public class ToggledObjectEditor : PropertyDrawer
+    {
+        private const string Root = "Packages/nadena.dev.modular-avatar/Editor/Inspector/ObjectSwitcher/";
+        private const string UxmlPath = Root + "ToggledObjectEditor.uxml";
+        private const string UssPath = Root + "ObjectSwitcherStyles.uss";
+
+        public override VisualElement CreatePropertyGUI(SerializedProperty property)
+        {
+            var uxml = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>(UxmlPath).CloneTree();
+            var uss = AssetDatabase.LoadAssetAtPath<StyleSheet>(UssPath);
+
+            Localization.UI.Localize(uxml);
+            uxml.styleSheets.Add(uss);
+            uxml.BindProperty(property);
+
+            return uxml;
+        }
+    }
+}

Editor/Inspector/ObjectToggle/ToggledObjectEditor.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 0d18528c5f704d3daf1160d9672bd09e
+timeCreated: 1722736548

Editor/Inspector/ObjectToggle/ToggledObjectEditor.uxml

@@ -0,0 +1,6 @@
+<UXML xmlns:ui="UnityEngine.UIElements" xmlns:ed="UnityEditor.UIElements">
+    <ui:VisualElement class="toggled-object-editor">
+        <ed:PropertyField binding-path="Active" label="" name="f-active"/>
+        <ed:PropertyField binding-path="Object" label="" name="f-object" class="f-object"/>
+    </ui:VisualElement>
+</UXML>

Editor/Inspector/ObjectToggle/ToggledObjectEditor.uxml.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 565803cb95a04d1f98f7050c18234cdd
+timeCreated: 1722736548

Editor/PluginDefinition/PluginDefinition.cs

@@ -58,7 +58,7 @@ namespace nadena.dev.modular_avatar.core.editor.plugin
                 seq.WithRequiredExtension(typeof(AnimationServicesContext), _s2 =>
                 {
                     seq.Run("Shape Changer", ctx => new PropertyOverlayPass(ctx).Execute())
-                        .PreviewingWith(new ShapeChangerPreview());
+                        .PreviewingWith(new ShapeChangerPreview(), new ObjectSwitcherPreview());
                     seq.Run(MergeArmaturePluginPass.Instance);
                     seq.Run(BoneProxyPluginPass.Instance);
                     seq.Run(VisibleHeadAccessoryPluginPass.Instance);

Editor/ReactiveObjects.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 183ea47f9e674c2a8c098b53c98bb38d
+timeCreated: 1722480750

Editor/ReactiveObjects/ObjectTogglePreview.cs

@@ -0,0 +1,127 @@
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Linq;
+using System.Threading.Tasks;
+using nadena.dev.ndmf.preview;
+using UnityEngine;
+
+namespace nadena.dev.modular_avatar.core.editor
+{
+    internal class ObjectSwitcherPreview : IRenderFilter
+    {
+        public ImmutableList<RenderGroup> GetTargetGroups(ComputeContext context)
+        {
+            var allToggles = context.GetComponentsByType<ModularAvatarObjectToggle>();
+
+            var objectGroups =
+                new Dictionary<GameObject, ImmutableList<(ModularAvatarObjectToggle, int)>.Builder>(
+                    new ObjectIdentityComparer<GameObject>());
+
+            foreach (var toggle in allToggles)
+            {
+                context.Observe(toggle,
+                    t => t.Objects.Select(o => o.Object.referencePath).ToList(),
+                    (x, y) => x.SequenceEqual(y)
+                );
+
+                if (toggle.Objects == null) continue;
+
+                var index = -1;
+                foreach (var switched in toggle.Objects)
+                {
+                    index++;
+
+                    if (switched.Object == null) continue;
+
+                    var target = context.Observe(toggle, _ => switched.Object.Get(toggle));
+
+                    if (target == null) continue;
+
+                    if (!objectGroups.TryGetValue(target, out var group))
+                    {
+                        group = ImmutableList.CreateBuilder<(ModularAvatarObjectToggle, int)>();
+                        objectGroups[target] = group;
+                    }
+
+                    group.Add((toggle, index));
+                }
+            }
+
+            var affectedRenderers = objectGroups.Keys
+                .SelectMany(go => context.GetComponentsInChildren<Renderer>(go, true))
+                // If we have overlapping objects, we need to sort by child to parent, so parent configuration overrides
+                // the child. We do this by simply looking at how many times we observe each renderer.
+                .GroupBy(r => r)
+                .Select(g => g.Key)
+                .ToList();
+
+            var renderGroups = new List<RenderGroup>();
+
+            foreach (var r in affectedRenderers)
+            {
+                var switchers = new List<(ModularAvatarObjectToggle, int)>();
+
+                var obj = r.gameObject;
+                while (obj != null)
+                {
+                    var group = objectGroups.GetValueOrDefault(obj);
+                    if (group != null) switchers.AddRange(group);
+
+                    obj = obj.transform.parent?.gameObject;
+                }
+
+                renderGroups.Add(RenderGroup.For(r).WithData(switchers.ToImmutableList()));
+            }
+
+            return renderGroups.ToImmutableList();
+        }
+
+        public Task<IRenderFilterNode> Instantiate(RenderGroup group, IEnumerable<(Renderer, Renderer)> proxyPairs,
+            ComputeContext context)
+        {
+            var data = group.GetData<ImmutableList<(ModularAvatarObjectToggle, int)>>();
+            return new Node(data).Refresh(proxyPairs, context, 0);
+        }
+
+        private class Node : IRenderFilterNode
+        {
+            public RenderAspects WhatChanged => 0;
+
+            private readonly ImmutableList<(ModularAvatarObjectToggle, int)> _controllers;
+
+            public Node(ImmutableList<(ModularAvatarObjectToggle, int)> controllers)
+            {
+                _controllers = controllers;
+            }
+
+            public Task<IRenderFilterNode> Refresh(IEnumerable<(Renderer, Renderer)> proxyPairs, ComputeContext context,
+                RenderAspects updatedAspects)
+            {
+                foreach (var controller in _controllers)
+                {
+                    // Ensure we get awoken whenever there's a change in a controlling component, or its enabled state.
+                    context.Observe(controller.Item1);
+                    context.ActiveAndEnabled(controller.Item1);
+                }
+
+                return Task.FromResult<IRenderFilterNode>(this);
+            }
+
+            public void OnFrame(Renderer original, Renderer proxy)
+            {
+                var shouldEnable = true;
+                foreach (var (controller, index) in _controllers)
+                {
+                    if (controller == null) continue;
+                    if (!controller.gameObject.activeInHierarchy) continue;
+                    if (controller.Objects == null || index >= controller.Objects.Count) continue;
+
+                    var obj = controller.Objects[index];
+                    shouldEnable = obj.Active;
+                }
+
+                proxy.gameObject.SetActive(shouldEnable);
+            }
+        }
+    }
+}

Editor/ReactiveObjects/ObjectTogglePreview.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 9773d1a779874850830b43c4db7c3912
+timeCreated: 1722480946

Editor/ReactiveObjects/PropertyOverlayPass.cs

@@ -27,7 +27,10 @@ namespace nadena.dev.modular_avatar.core.editor
 
         protected override void Execute(ndmf.BuildContext context)
         {
-            if (context.AvatarRootObject.GetComponentInChildren<ModularAvatarShapeChanger>() != null)
+            var hasShapeChanger = context.AvatarRootObject.GetComponentInChildren<ModularAvatarShapeChanger>() != null;
+            var hasObjectSwitcher =
+                context.AvatarRootObject.GetComponentInChildren<ModularAvatarObjectToggle>() != null;
+            if (hasShapeChanger || hasObjectSwitcher)
             {
                 var clip = new AnimationClip();
                 clip.name = "MA Shape Changer Defaults";
@@ -200,6 +203,8 @@ namespace nadena.dev.modular_avatar.core.editor
         internal void Execute()
         {
             Dictionary<TargetProp, PropGroup> shapes = FindShapes(context);
+            FindObjectToggles(shapes, context);
+            
             PreprocessShapes(shapes, out var initialStates, out var deletedShapes);
             
             ProcessInitialStates(initialStates);
@@ -222,6 +227,13 @@ namespace nadena.dev.modular_avatar.core.editor
 
             foreach (var (key, info) in shapes.ToList())
             {
+                if (info.actionGroups.Count == 0)
+                {
+                    // never active control; ignore it entirely
+                    shapes.Remove(key);
+                    continue;
+                }
+                
                 var deletions = info.actionGroups.Where(agk => agk.IsDelete).ToList();
                 if (deletions.Any(d => d.ControllingObject == null))
                 {
@@ -251,6 +263,10 @@ namespace nadena.dev.modular_avatar.core.editor
 
         private void ProcessInitialStates(Dictionary<TargetProp, float> initialStates)
         {
+            // We need to track _two_ initial states: the initial state we'll apply at build time (which applies
+            // when animations are disabled) and the animation base state. Confusingly, the animation base state
+            // should be the state that is currently applied to the object...
+            
             var clips = context.Extension<AnimationServicesContext>().AnimationDatabase;
             var initialStateHolder = clips.ClipsForPath(PropertyOverlayPrePass.TAG_PATH).FirstOrDefault();
             if (initialStateHolder == null) return;
@@ -261,12 +277,12 @@ namespace nadena.dev.modular_avatar.core.editor
 
             foreach (var (key, initialState) in initialStates)
             {
-                var curve = new AnimationCurve();
-                curve.AddKey(0, initialState);
-                curve.AddKey(1, initialState);
-
                 string path;
                 Type componentType;
+
+                var applied = false;
+                float animBaseState = 0;
+                
                 if (key.TargetObject is GameObject go)
                 {
                     path = RuntimeUtil.RelativePath(context.AvatarRootObject, go);
@@ -282,13 +298,42 @@ namespace nadena.dev.modular_avatar.core.editor
                         var blendShape = key.PropertyName.Substring("blendShape.".Length);
                         var index = smr.sharedMesh?.GetBlendShapeIndex(blendShape);
 
-                        if (index != null && index >= 0) smr.SetBlendShapeWeight(index.Value, initialState);
+                        if (index != null && index >= 0)
+                        {
+                            animBaseState = smr.GetBlendShapeWeight(index.Value);
+                            smr.SetBlendShapeWeight(index.Value, initialState);
+                        }
+
+                        applied = true;
                     }
                 }
                 else
                 {
                     throw new InvalidOperationException("Invalid target object: " + key.TargetObject);
                 }
+
+                if (!applied)
+                {
+                    var serializedObject = new SerializedObject(key.TargetObject);
+                    var prop = serializedObject.FindProperty(key.PropertyName);
+
+                    if (prop != null)
+                        switch (prop.propertyType)
+                        {
+                            case SerializedPropertyType.Boolean:
+                                animBaseState = prop.boolValue ? 1 : 0;
+                                prop.boolValue = initialState > 0.5f;
+                                break;
+                            case SerializedPropertyType.Float:
+                                animBaseState = prop.floatValue;
+                                prop.floatValue = initialState;
+                                break;
+                        }
+                }
+
+                var curve = new AnimationCurve();
+                curve.AddKey(0, animBaseState);
+                curve.AddKey(1, animBaseState);
                 
                 var binding = EditorCurveBinding.FloatCurve(
                     path,
@@ -516,6 +561,16 @@ namespace nadena.dev.modular_avatar.core.editor
             var binding = EditorCurveBinding.FloatCurve(path, componentType, key.PropertyName);
             AnimationUtility.SetEditorCurve(clip, binding, curve);
 
+            if (key.TargetObject is GameObject obj && key.PropertyName == "m_IsActive")
+            {
+                var asc = context.Extension<AnimationServicesContext>();
+                if (asc.TryGetActiveSelfProxy(obj, out var propName))
+                {
+                    binding = EditorCurveBinding.FloatCurve("", typeof(Animator), propName);
+                    AnimationUtility.SetEditorCurve(clip, binding, curve);
+                }
+            }
+
             return clip;
         }
 
@@ -586,6 +641,57 @@ namespace nadena.dev.modular_avatar.core.editor
             return clip;
         }
 
+        private void FindObjectToggles(Dictionary<TargetProp, PropGroup> objectGroups, ndmf.BuildContext context)
+        {
+            var asc = context.Extension<AnimationServicesContext>();
+
+            var toggles = this.context.AvatarRootObject.GetComponentsInChildren<ModularAvatarObjectToggle>(true);
+
+            foreach (var toggle in toggles)
+            {
+                if (toggle.Objects == null) continue;
+
+                foreach (var obj in toggle.Objects)
+                {
+                    var target = obj.Object.Get(toggle);
+                    if (target == null) continue;
+
+                    // Make sure we generate an animator prop for each controlled object, as we intend to generate
+                    // animations for them.
+                    asc.ForceGetActiveSelfProxy(target);
+
+                    var key = new TargetProp
+                    {
+                        TargetObject = target,
+                        PropertyName = "m_IsActive"
+                    };
+
+                    if (!objectGroups.TryGetValue(key, out var group))
+                    {
+                        group = new PropGroup(key, target.activeSelf ? 1 : 0);
+                        objectGroups[key] = group;
+                    }
+
+                    var value = obj.Active ? 1 : 0;
+                    var action = new ActionGroupKey(asc, key, toggle.gameObject, value);
+
+                    if (action.ControllingObject == null)
+                    {
+                        if (action.InitiallyActive)
+                            // always active control
+                            group.actionGroups.Clear();
+                        else
+                            // never active control
+                            continue;
+                    }
+
+                    if (group.actionGroups.Count == 0)
+                        group.actionGroups.Add(action);
+                    else if (!group.actionGroups[^1].TryMerge(action)) group.actionGroups.Add(action);
+                }
+            }
+        }
+        
         private Dictionary<TargetProp, PropGroup> FindShapes(ndmf.BuildContext context)
         {
             var asc = context.Extension<AnimationServicesContext>();

Editor/ShapeChanger.meta

@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: 57bb6d1a371c4993bf7cfed797b2eb65
-timeCreated: 1717105136

Runtime/ModularAvatarObjectToggle.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace nadena.dev.modular_avatar.core
+{
+    [Serializable]
+    public struct ToggledObject
+    {
+        public AvatarObjectReference Object;
+        public bool Active;
+    }
+
+    [AddComponentMenu("Modular Avatar/MA Object Toggle")]
+    [HelpURL("https://modular-avatar.nadena.dev/docs/reference/object-toggle?lang=auto")]
+    public class ModularAvatarObjectToggle : AvatarTagComponent
+    {
+        [SerializeField] private List<ToggledObject> m_objects = new();
+
+        public List<ToggledObject> Objects
+        {
+            get => m_objects;
+            set => m_objects = value;
+        }
+    }
+}

Runtime/ModularAvatarObjectToggle.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: a162bb8ec7e24a5abcf457887f1df3fa
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {fileID: 2800000, guid: a8edd5bd1a0a64a40aa99cc09fb5f198, type: 3}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

UnitTests~/ShapeChanger/InitialStates/SCDefaultAnimation.cs

@@ -26,6 +26,9 @@ namespace ShapeChangerTests
             Assert.NotNull(subBt);
             var clip = subBt.children[0].motion as AnimationClip;
             Assert.NotNull(clip);
+            
+            var smr = root.transform.Find("test mesh").GetComponent<SkinnedMeshRenderer>();
+            var sharedMesh = smr.sharedMesh;
 
             var bindings = AnimationUtility.GetCurveBindings(clip);
             var curve = AnimationUtility.GetEditorCurve(clip, EditorCurveBinding.FloatCurve(
@@ -33,8 +36,8 @@ namespace ShapeChangerTests
                 typeof(SkinnedMeshRenderer),
                 "blendShape.key1"
             ));
-            Assert.AreEqual(10.0f, curve.keys[0].value, 0.1f);
-            Assert.AreEqual(10.0f, curve.keys[1].value, 0.1f);
+            Assert.AreEqual(7.0f, curve.keys[0].value, 0.1f);
+            Assert.AreEqual(7.0f, curve.keys[1].value, 0.1f);
             
             curve = AnimationUtility.GetEditorCurve(clip, EditorCurveBinding.FloatCurve(
                 "test mesh",
@@ -49,14 +52,12 @@ namespace ShapeChangerTests
                 typeof(SkinnedMeshRenderer),
                 "blendShape.key3"
             ));
-            Assert.AreEqual(100.0f, curve.keys[0].value, 0.1f);
-            Assert.AreEqual(100.0f, curve.keys[1].value, 0.1f);
+            Assert.AreEqual(6.0f, curve.keys[0].value, 0.1f);
+            Assert.AreEqual(6.0f, curve.keys[1].value, 0.1f);
             
             // Check actual blendshape states
-            var smr = root.transform.Find("test mesh").GetComponent<SkinnedMeshRenderer>();
-            var sharedMesh = smr.sharedMesh;
             Assert.AreEqual(10.0f, smr.GetBlendShapeWeight(sharedMesh.GetBlendShapeIndex("key1")), 0.1f);
-            Assert.AreEqual(0.0f, smr.GetBlendShapeWeight(sharedMesh.GetBlendShapeIndex("key2")), 0.1f);
+            Assert.AreEqual(5.0f, smr.GetBlendShapeWeight(sharedMesh.GetBlendShapeIndex("key2")), 0.1f);
             Assert.AreEqual(100.0f, smr.GetBlendShapeWeight(sharedMesh.GetBlendShapeIndex("key3")), 0.1f);
         }
     }

UnitTests~/ShapeChanger/InitialStates/SCDefaultAnimation.prefab

@@ -600,6 +600,21 @@ PrefabInstance:
       propertyPath: m_AABB.m_Extent.y
       value: 1
       objectReference: {fileID: 0}
+    - target: {fileID: -3887185075125053422, guid: cd28f61dacdc2424d951194ff69ba154,
+        type: 3}
+      propertyPath: m_BlendShapeWeights.Array.data[0]
+      value: 5
+      objectReference: {fileID: 0}
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docs~/docs/reference/object-toggle.md

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+# Object Toggle
+
+<!-- TODO: Screenshot -->
+
+The Object Toggle component allows you to change the active state of one or more other GameObjects, based on the active
+state of a controlling object.
+
+## When should I use it?
+
+This component is useful to disable one mesh when another mesh is covering it entirely. For example, you might want to
+disable an underwear mesh when it's fully covered by other clothing.
+
+## Setting up Object Toggle
+
+Simply add an Object Toggle component to the controlling object, then click the + and select a target object to be
+controlled. The checkmark controls whether the target object will be enabled or disabled.
+
+### Conflict resolution
+
+When multiple Object Toggles are active and try to control the same target object, the Object Toggle that is last in
+hierarchy order will win. When no Object Toggles are active, the original state of the object, or animated state (if
+some other animation is trying to animate that object) wins.
+
+### Response timing
+
+Object Toggle updates the affected objects one frame after the controlling object is updated. To avoid any unfortunate
+"accidents", when an Object Toggle is disabled, the object that was disabled (either the Object Toggle itself or one of
+its parents) in its parent hierarchy will be disabled one frame later than they would otherwise. This ensures that if
+you use Object Toggle to hide a mesh when it's fully covered, the covering mesh will remain visible until the same frame
+as when the inner mesh is enabled again.
+
+When you use an Object Toggle to control another Object Toggle, this delay only applies to each Object Toggle
+individually. That is, if you have A -> B -> C, and A is turned off, the timing will be as follows:
+
+* Frame 1: Nothing happens (A's disable is delayed)
+* Frame 2: A is disabled (B's disable is delayed)
+* Frame 3: B and C are disabled at the same time.
+
+### Preview system limitations
+
+The effect of Object Toggles on mesh visibility is immediately reflected in the editor scene view. However, the impact
+of Object Toggles on other responsive components, such as other Object Toggles or [Shape Changers](./shape-changer.md)
+will not be reflected in the preview display. To see the full effect of Object Toggles, you must enter play mode.

docs~/i18n/ja/docusaurus-plugin-content-docs/current/reference/object-toggle.md

@@ -0,0 +1,44 @@
+# Object Toggle
+
+<!-- TODO: Screenshot -->
+
+Object Toggle コンポーネントは、制御オブジェクトのアクティブ状態に基づいて、他のいくつかのGameObjectのアクティブ状態を変更するコンポーネントです。
+
+## いつ使うべきか？
+
+このコンポーネントは、他の衣服に完全に覆われたときに、隠されたメッシュを無効にしたい場合に便利です。例えば、他の衣服に完全に覆われたときに
+下着メッシュを無効にしたい場合に使えます。
+
+## Object Toggleの設定
+
+制御オブジェクトに Object Toggle コンポーネントを追加し、+ をクリックして制御される対象オブジェクトを選択します。
+チェックマークは、対象オブジェクトが有効か無効かを制御します。
+
+### コンフリクト解決
+
+複数の Object Toggle がアクティブで、同じ対象オブジェクトを制御しようとする場合、階層順に最後になる Object Toggle
+の設定が採用されます。
+
+対象オブジェクトを操作する Object Toggle がすべて非アクティブ状態の場合、オブジェクトの元の状態、または（他のアニメーションがそのオブジェクト
+を操作している場合）アニメーション状態が採用されます。
+
+### 応答タイミング
+
+Object Toggle は、制御オブジェクトが更新された後の1フレーム後に影響を受けるオブジェクトを更新します。不幸な「事故」を避けるため、
+Object Toggle が無効になると、無効になったオブジェクト（Object Toggle 自体か、その親など）が本来より１フレーム後に無効になります。
+これにより、外側の衣装を無効化するとき、内側のメッシュが再度有効になるまで、外側のメッシュが表示され続けることが保証されます。
+
+Object Toggle を使用して他の Object Toggle を制御する場合、この遅延は各 Object Toggle にのみ適用されます。つまり、A -> B ->
+C という
+構造で A がオフになった場合、タイミングは次のようになります：
+
+* フレーム1：何も起こらない（Aの無効化が遅延）
+* フレーム2：Aが無効化される（Bの無効化が遅延）
+* フレーム3：BとCが同時に無効化されます。
+
+### プレビューシステムの制限
+
+Object Toggle がメッシュの可視性に与える影響は、エディタのシーンビューにすぐに反映されます。ただし、Object Toggle
+が他の応答コンポーネント、
+例えば他の Object Toggle または [Shape Changers](./shape-changer.md) に与える影響は、プレビュー表示には反映されません。
+Object Toggle の完全な効果を確認するには、再生モードに入る必要があります。