# Planar reflection

a mirror floor reflecting the scene above it.

```{raw} html
<a class="example-run-button" href="../demos/features_3d_planar_reflection.html">▶ Run in browser</a>

```

**Tags:** `3d` `planar-reflection` `renderview` `render-to-texture`

A PlanarReflection3D node re-renders the MAIN scene every frame through a
camera mirrored across the node's plane (its local XZ plane, +Y normal), with
an oblique near-clip so nothing below the floor leaks into the reflection.
The floor Material samples that capture with a projective UV from the
fragment's clip position: pass the node straight to
``Material(albedo_map=reflection)`` and the surface becomes a mirror. The
orange cube spins so the reflection visibly tracks the world in the same
frame. Contrast with ReflectionProbe3D (a cubemap approximation for glossy
PBR): a planar reflection is exact for flat surfaces (mirrors, water, wet
floors).


Usage:
    uv run python examples/features/3d/planar_reflection.py

## Source

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