Paint is used to "fill" the area of primitives.

When you apply the :fill style to a primitive, you must supply valid paint data.

There are five types of paint.

• :color - Fill with a solid color. This is the most common and has shortcuts.
• :image - Fill with an image from the cache.
• :box_gradient - Fill with a box gradient.
• :linear_gradient - Fill with a linear gradient.
• :radial_gradient - Fill with a radial gradient.

See the documentation for each type for details.

Color Shortcut

Filling with a color is so common, you can just declare any valid color in a fill, and it will figure out the right paint to use.

Examples:

graph
|> rect({100,200}, fill: :blue)
|> rect({60,120}, fill: {:blue, 128})
|> rect({30,60}, fill: {10,20,30,40})