# Animation Blend

BlendSpace1D, crossfade, and keyframe events.

```{raw} html
<a class="example-run-button" href="../demos/features_3d_animation_blend.html">▶ Run in browser</a>

```

**Tags:** `3d`

A cube's vertical position is driven by a BlendSpace1D that blends between
an *idle* clip (gentle bob) and a *bounce* clip (big jumps).  Press **Up/Down**
to adjust the blend parameter.  Press **Space** to crossfade between two
colour-tint animations.  Keyframe events print to stdout when triggered.

Controls:
    Up/Down   - Adjust blend parameter (idle <-> bounce)
    Space     - Crossfade between colour clips
    Escape    - Quit

## Source

```{literalinclude} ../../examples/features/3d/animation_blend.py
:language: python
:linenos:
```