# Fog

Distance-based fog via WorldEnvironment.

```{raw} html
<a class="example-run-button" href="../demos/features_3d_fog.html">▶ Run in browser</a>

```

**Tags:** `3d`

Demonstrates:
  - Distance fog with adjustable density/start/end
  - Fog colour control
  - Height fog toggle
  - Fog mode switching (linear / exponential / exponential_squared)
  - Bloom + tonemap combined with fog

Controls:
    A / D       - Orbit camera left / right
    W / S       - Zoom in / out
    Q / E       - Raise / lower camera
    1           - Toggle fog
    2           - Toggle bloom
    3           - Cycle fog mode
    Up / Down   - Adjust fog density
    Left / Right - Adjust tonemap exposure
    Escape      - Quit

Run: uv run python examples/features/3d/fog.py

## Source

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