# Wood

## Visuele omschrijving
Organic hard material with grain bands, knots, chips, and warm value variation.

## Pixelcluster regels
Use directional grain clusters and knot shapes.
```text
HHMMM
MM-DD
M-ooD
```

## Contrast
Medium, higher around knots and cuts.

## Hue shifting
Yellow-orange highlight, brown mid, purple-brown shadow.

## Highlights
Long soft highlights along grain.
```text
HH--M
MM--D
DD...
```

## Shadow behavior
Cracks and knots are darker grouped forms.

## Outline
Dark brown or cool purple-brown.

## Rim lighting
Subtle warm or cool rim depending on scene.

## Ambient lighting
Moderate warm ambient.

## AA regels
AA on cut edges and curves.

## Dithering regels
Directional grain allowed; random bark noise forbidden.

## Veel voorkomende fouten
Bad:
```text
|||||
|||||
|||||
```
Good:
```text
HHMMM
MM-DD
M-ooD
```

## QA checklist
- 50% scale herkenbaar: Ja, by warm grain bands and knots.
- Grain follows form.
- Knots are grouped.
- No random stripes.
- Cut edges read.