Pt2f is shorthand for Point2f{X, Y}.

Rect2f is shorthand for Rectangle2f{Pt(x0, y0), Pt(x1, y1)}.

ScaleLineSegment segment's size to length flexible in limit.

ScaleRectangleBySize scale rect to size flexible in limit.

UnionPoints returns the smallest rectangle that contains all points.

UnionRectangles returns the smallest rectangle that contains all rectangles, empty rectangles excluded.

ZP2f is the zero Point2f.

ZR2f is the zero Rectangle2f.

A Point2f is an X, Y coordinate pair.