> For the complete documentation index, see [llms.txt](https://docs.viverse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.viverse.com/polygon-streaming/integrations-and-plugins/polygon-streaming-unity-sdk/animated-glb-models.md).

# Animated GLB Models

Play animations from streamed GLB/XRG models using the SDK's hybrid animation system.

### How It Works

The SDK bridges a **Legacy Animation** component (drives the mesh) with an **Animator** component (runs your state machine). This is necessary because clips are loaded dynamically at runtime and cannot be embedded in an Animator Controller asset at edit time.

Morph target (blend shape) animations play automatically as part of clip playback — no extra setup needed.

***

### Inspector Setup

1. Enable **Log Animations** on ***`StreamingModel`*** to see available clip names at runtime.
2. Create an **Animator Controller** asset with states. Assign a **dummy AnimationClip** to each state, named to match the model's clip name (e.g. `"Idle"`, `"Walk"`).
3. Assign the controller to **Custom Animator Controller** on ***`StreamingModel`***.
4. Press Play.

> **Clip matching**: The SDK matches by exact name first, then by numeric index (e.g. `"0"`, `"1"`).

***

### Animation Modes

| Mode            | Behavior                                                                                                     |
| --------------- | ------------------------------------------------------------------------------------------------------------ |
| `Auto`          | Default. Uses ***`EmbeddedClips`*** without a controller; ***`VrmMecanim`*** if controller + humanoid bones. |
| `EmbeddedClips` | Standard path for animated GLBs.                                                                             |
| `VrmMecanim`    | Mecanim humanoid retargeting. Requires humanoid skeleton.                                                    |
| `None`          | No animation.                                                                                                |

***

### Quick Code Reference

```csharp
// Wait for load, then control animations
streamingModel.SetLoadedCallback(() =>
{
    streamingModel.PlayAnimation("Idle");
    streamingModel.SetAnimationFloat("Speed", 1.0f);
    streamingModel.SetAnimationTrigger("Jump");
});

// Swap controller at runtime
streamingModel.RuntimeAnimatorController = newController;
```

***

> For the full API reference (StreamingModelAnimator tuning, complete examples, troubleshooting), see `USAGE_ANIMATED_GLB.md` shipped with the SDK package.


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