Module painted_region 

Structs

PaintedRegion 🔒

A set of disjoint, axis-aligned rectangles that tracks exactly which area has already been painted for a Container Timing container, so that overlapping fragments (e.g. two overlapping <img>s) aren’t double-counted.

Functions

subtract_all 🔒

Returns the portion of rect not covered by any rect in others, as a set of disjoint rects (possibly empty, if others fully covers rect).

subtract_one 🔒

Splits a into the (up to four) disjoint rects that remain once b is removed from it.