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May 29, 2020 at 12:35
#18836
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@Harry Alex,
The Shoelace formula is easier to implement.
@Jože Marinko
Note: For calculating area of close non-self intersection polygon, the vertices must go anti-clock wise, and for negative areas (holes) you must go clock wise.
@Harru Alex,
Can you implement Bolyai–Gerwien hypothesis in GDL ?