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Support /nodes/{}/weights/{} #1

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debc58a
feat: support `/nodes/{}/weights/{}` - control individual morph weights
0b5vr Jan 16, 2026
acec2bc
feat: support `/nodes/{}/weights/{}` even with multi-material meshes …
0b5vr Jan 16, 2026
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47 changes: 28 additions & 19 deletions src/GLTFLoaderAnimationPointer.js
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Original file line number Diff line number Diff line change
Expand Up @@ -247,23 +247,29 @@ export class GLTFAnimationPointerExtension {
const pathStartNode = path.substring( 0, pathIndexNode );
targetProperty = path.substring( pathIndexNode );

switch ( targetProperty ) {

case 'translation':
targetProperty = 'position';
break;
case 'rotation':
targetProperty = 'quaternion';
break;
case 'scale':
targetProperty = 'scale';
break;
case 'weights':
targetProperty = 'morphTargetInfluences';
break;
case "extensions/KHR_node_visibility/visible":
targetProperty = 'visible';
break;
if ( targetProperty.startsWith( 'weights/' ) ) {
// `/nodes/{}/weights/{}` - control individual morph weights
const weightIndex = targetProperty.substring( 'weights/'.length );
targetProperty = 'morphTargetInfluences[' + weightIndex + ']';
} else {
switch ( targetProperty ) {

case 'translation':
targetProperty = 'position';
break;
case 'rotation':
targetProperty = 'quaternion';
break;
case 'scale':
targetProperty = 'scale';
break;
case 'weights':
targetProperty = 'morphTargetInfluences';
break;
case "extensions/KHR_node_visibility/visible":
targetProperty = 'visible';
break;
}
}

path = pathStartNode + targetProperty;
Expand Down Expand Up @@ -385,8 +391,11 @@ export class GLTFAnimationPointerExtension {

// specially handle the morphTargetInfluences property for multi-material meshes
// in which case the target object is a Group and the children are the actual targets
// Note that there is also morphTargetInfluences[i] for individual morph targets
// see NE-3311
if ( parts[ 3 ] === 'morphTargetInfluences' ) {
if ( parts[ 3 ].startsWith( 'morphTargetInfluences' ) ) {

const property = parts[ 3 ];

if ( node.type === 'Group' ) {

Expand All @@ -399,7 +408,7 @@ export class GLTFAnimationPointerExtension {
if ( ch instanceof SkinnedMesh && ch.morphTargetInfluences ) {

parts[ 3 ] = ch.name;
parts[ 4 ] = 'morphTargetInfluences';
parts[ 4 ] = property;
__createTrack( this.parser );

}
Expand Down