is a three-dimensional graphics directive specifying that objects that follow are to be drawn with closely spaced parallel lines.

uses the density d of shading.

uses lines with the specified color col.

uses lines with the specified color col and density d.

# Details

• HatchShading is also known as cross-hatching.
• HatchShading is typically used to create tonal effects with closely spaced parallel lines.
• HatchShading[d,col] specifies that lines of color col should vary with overall density d.
• The density of lines is driven by the luminosity of the surface. Less dense areas are where there is high luminosity.
• The density d is between 0 and 1. A higher value indicates more lines per area.
• The color col can be defined by RGBColor, Hue or any other color specification.
• In HatchShading[d], the color of lines is taken to be Black.
• HatchShading[col] uses a density of 0.5.
• is effectively equivalent to HatchShading[0.5,Black].
• The setting Lighting"Accent" uses a directional light and faithfully reproduces colors on the surface.

# Examples

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## Basic Examples(4)

Apply hatch shading to the unit sphere with a directional light:

Use hatch shading to show a knot:

Style a surface in a plot:

A cross-hatching portrait of Beethoven:

## Scope(11)

### Basic Uses(5)

Apply hatch shading to a graphics primitive:

Apply hatch shading to a plot:

Apply hatch shading to a chart:

Apply hatch shading to a 3D object:

Summary box:

### Specification(3)

HatchShading with no arguments uses gray tones:

Apply hatch shading to the unit sphere with different densities:

### Lighting(3)

HatchShading works with all types of lights:

Use colored lights:

Use "Accent" lighting to faithfully reproduces colors on the surface:

## Possible Issues(2)

The default light scheme uses several colored light sources:

Use a single directional light to get the standard hatch shading effect:

No shading effect is applied to faces of polygons or filled graphic objects:

#### CMS

Wolfram Language. 2020. "HatchShading." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/HatchShading.html.