Patch to resolve mapping issue on skinned meshes (google#2799)

samuelcardillo · Sep 16, 2021 · 08497c7 · 08497c7
1 parent 9c3ad07
commit 08497c7
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/packages/model-viewer/src/features/scene-graph/nodes/primitive-node.ts b/packages/model-viewer/src/features/scene-graph/nodes/primitive-node.ts
@@ -92,7 +92,12 @@ export class PrimitiveNode extends Node {
       console.error('Expected type \'nodes\' but got ' + nodes);
     }
     // Gets the mesh index from the node.
-    const meshIndex = ((gltf[nodes] || []) as GLTFNode[])[nodeIndex].mesh!;
+    let meshIndex = ((gltf[nodes] || []) as GLTFNode[])[nodeIndex].mesh!;
+    if (meshIndex == null) {
+      // TODO: Resolve incorrect associations in Three with associations
+      // updates, issue result in a mesh being mapped as a node.
+      meshIndex = nodeIndex;
+    }
     // The gltf mesh array to sample from.
     const meshElementArray = gltf['meshes'] || [];
     // List of primitives under the mesh.