Add fixes for morph target non-animation group serialization

serializers/src/glTF/2.0/glTFAnimation.ts

@@ -236,7 +236,7 @@ export class _GLTFAnimation {
  * @param convertToRightHandedSystem
  * @param animationSampleRate
  */
-    public static _CreateMorphTargetAnimationFromMorphTargets(babylonNode: Node, runtimeGLTFAnimation: IAnimation, idleGLTFAnimations: IAnimation[], nodeMap: { [key: number]: number }, nodes: INode[], binaryWriter: _BinaryWriter, bufferViews: IBufferView[], accessors: IAccessor[], convertToRightHandedSystem: boolean, animationSampleRate: number) {
+    public static _CreateMorphTargetAnimationFromNode(babylonNode: Node, runtimeGLTFAnimation: IAnimation, idleGLTFAnimations: IAnimation[], nodeMap: { [key: number]: number }, nodes: INode[], binaryWriter: _BinaryWriter, bufferViews: IBufferView[], accessors: IAccessor[], convertToRightHandedSystem: boolean, animationSampleRate: number) {
         let glTFAnimation: IAnimation;
         if (babylonNode instanceof Mesh) {
             let morphTargetManager = babylonNode.morphTargetManager;
@@ -260,7 +260,7 @@ export class _GLTFAnimation {
                                 if (l == i) {
                                     combinedAnimationKeys.push(animationKey);
                                 } else {
-                                    combinedAnimationKeys.push({ frame: animationKey.frame, value: morphTargetManager.getTarget(l).influence });
+                                    combinedAnimationKeys.push({ frame: animationKey.frame, value: 0 });
                                 }
                             }
                         }
@@ -275,7 +275,7 @@ export class _GLTFAnimation {
                             _GLTFAnimation.AddAnimation(`${animation.name}`,
                                 animation.hasRunningRuntimeAnimations ? runtimeGLTFAnimation : glTFAnimation,
                                 babylonNode,
-                                animation,
+                                combinedAnimation,
                                 animationInfo.dataAccessorType,
                                 animationInfo.animationChannelTargetPath,
                                 nodeMap,

serializers/src/glTF/2.0/glTFExporter.ts

@@ -1797,9 +1797,11 @@ export class _Exporter {
                                 nodeIndex = this._nodes.length - 1;
                                 nodeMap[babylonNode.uniqueId] = nodeIndex;
 
-                                if (!babylonScene.animationGroups.length && babylonNode.animations.length) {
-                                    _GLTFAnimation._CreateNodeAnimationFromNodeAnimations(babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, this._nodes, binaryWriter, this._bufferViews, this._accessors, convertToRightHandedSystem, this._animationSampleRate);
-                                    _GLTFAnimation._CreateMorphTargetAnimationFromMorphTargets(babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, this._nodes, binaryWriter, this._bufferViews, this._accessors, convertToRightHandedSystem, this._animationSampleRate);
+                                if (!babylonScene.animationGroups.length){
+                                    _GLTFAnimation._CreateMorphTargetAnimationFromNode(babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, this._nodes, binaryWriter, this._bufferViews, this._accessors, convertToRightHandedSystem, this._animationSampleRate);
+                                    if (babylonNode.animations.length) {
+                                        _GLTFAnimation._CreateNodeAnimationFromNodeAnimations(babylonNode, runtimeGLTFAnimation, idleGLTFAnimations, nodeMap, this._nodes, binaryWriter, this._bufferViews, this._accessors, convertToRightHandedSystem, this._animationSampleRate);
+                                }
                                 }
                             });
                         }