bool_combine
Combine, merge 2 polygons (must have common part). The order of fg/bg is irrelevant.
Combine, merge 2 polygons (must have common part). The order of fg/bg is irrelevant.
Get intersection of 2 polygons (must have common part). The order of fg/bg is irrelevant.
Substract bg to fg polygons (must have common part). The fg/bg order is crucial.
Substract bg to fg polygons (must have common part). The order of fg/bg is irrelevant.
Read a boolean input from the user. Returns an error if not a valid boolean (true/false, yes/no, y/n, 1/0).