VRM Avatar — Point-to-Walk Companion Demo

[Peter-Pater]

VRM Avatar — Point-to-Walk Companion Demo

Adds a working VRM avatar demo to demos/vrm-avatar/ using @pixiv/three-vrm. Click or pinch a floor location and the avatar walks there, then returns to idle.

What's included:

• VRM loading via GLTFLoader + VRMLoaderPlugin (direct, not xb.ModelViewer — see below)
• Mixamo FBX animation retargeting onto the VRM humanoid skeleton with full MIXAMO_VRM_RIG_MAP
• Idle/walk crossfade via AnimationMixer
• Procedural eye blink via VRM expression manager
• Point-to-walk: raycasts against xb.core.depth.depthMesh on device, falls back to y=0 ground plane in simulator
• Spring bone physics active via vrm.update(delta)
• Works in the XRBlocks desktop simulator and WebXR

Why not xb.ModelViewer?
VRMLoaderPlugin must be registered on the GLTFLoader instance before the load call. xb.ModelViewer has no loader injection point, so direct loading is the only viable approach.

Assets:

• VRM model loaded from jsDelivr CDN (three-vrm sample model, no local file)
• animations/Idle.fbx and animations/Walking.fbx — free Mixamo downloads, included in repo