---
title: "v0.1.5"
section: "Released Versions"
order: 2500
description: "v0.1.5 - ModelNode Base Class & Bvh Support"
---

# v0.1.5 - ModelNode Base Class & Bvh Support

## New Features

### ModelNode Base Class

All 3D model loaders now inherit from a shared `ModelNode` base class, documenting the common props across all formats:

```python
from vuer.schemas import ModelNode, Glb, Urdf, Bvh

# All model loaders share these props:
# src, text, buff, assets, hide, onLoad, materialType, material,
# color, opacity, wireframe, visible, castShadow, receiveShadow,
# frustumCulled, renderOrder, position, rotation, quaternion, scale

issubclass(Glb, ModelNode)   # True
issubclass(Urdf, ModelNode)  # True
issubclass(Bvh, ModelNode)   # True
```

### Bvh Component

New `Bvh` component for loading BVH (Biovision Hierarchy) motion capture data:

```python
from vuer.schemas import Bvh

# Load motion capture animation
Bvh(
    src="https://example.com/walk.bvh",
    playAnimation=True,
    animationSpeed=1.0,
    boneRadius=0.02,
    jointColor="#ff6600",
    key="mocap",
)

# Or load from text
Bvh(text=bvh_content, key="mocap-inline")
```

**Bvh Parameters:**

- `src` / `text` — URL or inline BVH content
- `playAnimation` — Auto-play animation (default: True)
- `animationSpeed` — Playback speed multiplier
- `boneRadius` — Bone cylinder radius
- `jointColor` — Joint sphere color
- `label` — Show joint name labels

## Improvements

- **Standardized Obj initialization** — `Obj` now uses the consistent kwargs pattern like all other model classes
- **Improved docstrings** — `Fbx`, `Stl`, `Dae`, `Glb`, `CoordsMarker`, and `Arrow` have proper param/type notation and example usage blocks

## Documentation

- New [Bvh component](/components/bvh) reference with usage examples