If two boxes overlap then the overlap region is another box. This method is used to calculate the coordinates of the overlap. The boxes are represented by the top-left and bottom-right corner coordinates. If the returned array has a length: 0 then they do not overlap 4 then these are the c
(double ax0, double ay0, double ax1, double ay1, double bx0, double by0, double bx1, double by1)