I am trying to find the corners of the "rectangular" shapes. This code is working very well. But I dont know exactly how it works. Can you explain me ??
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Matt J on 1 Aug 2018
Edited: Matt J on 14 Apr 2019
Maybe this image will help. The corners of a polyhedron will maximize/minimize the intercept of lines of a certain slope - it's a linear programming principle. In the code shown, the lines used x+y, x-y, -x+y,-x-y are those oriented at 45 degrees to the x,y axes. As long as the rectangle edges are approximately parallel/perpendicular to the x,y axes, its corners will minimize the intercept of one of these lines.