Blend mixes two colors.

Gray creates an opaque gray color from an intensity in range [0,1], where 0 means black and 1 means white.

RGBA creates a color from float RGBA values.

WH creates a rectangle at (0,0) with the given size.

XYWH creates a rectangle at the given point with the given size.

XYXY creates a rectangle with the given minimum and maximum points.

A Buffer contains a list of commands.

Font describes a font face.

A FontLookup provides information about fonts.

FontMetrics can be used to query the geometry of a font face.

Color is a 32 bit RGBA color with premultiplied alpha.