# Fog

<a href="/demos/3d_fog.html">Play Demo</a>

Fog Demo — Distance-based fog via WorldEnvironment.

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 packages/graphics/examples/3d_fog.py

## Source Code

```{literalinclude} ../../packages/graphics/examples/3d_fog.py
:language: python
:linenos:
```