A geometry is rectangle. x and y are coordinates of top-left corner.

Convenient function to create a t.

seg_inter x1 w1 x2 w2 returns the intersection segment (left..right) between segments (x1..(x1+w1)) and (x2..(x2+w2)), if any.

Intersection between two rectangles, if any.

Union of two rectangles, i.e. returns the rectangle containing both.

Zero geometry, all fields set to 0.

inside ~x ~y g returns true is point (x, y) is inside g.

translate ~x ~y g returns a new geometry, adding x (resp. y) to g.x (resp. g.y) if specified.

enlarge ~w ~h g returns a new geometry whose width (resp. height) is increased by 2 * w (resp. 2 * h). g.x (resp. g.y) is translated by -w (resp. -h) so that the final geometry remains centered with report to the original one.

to_rect g creates a Tsdl.Sdl.rect from g.

of_rect r creates a geometry t from a Tsdl.Sdl.rect.

has_intersect g1 g2 returns true if intersection g1 g2 <> None.

remove_border g borders returns a new geometry by removing borders from g. It is ensured that the returned geometry has non-negative width and height.