(SOLVED) any math profi here??

[ilan]

look at hits problem please...

https://www.b4x.com/android/forum/threads/geo-zone-determination-point-in-polygon.53929/#post-427544

 

[ilan]

could this maybe be a solution:

https://en.wikipedia.org/wiki/Weiler–Atherton_clipping_algorithm#The_Algorithm

http://geom-java.sourceforge.net/index.html

https://geonet.esri.com/thread/3510

http://www.davdata.nl/math/overlap.html#top

http://alienryderflex.com/polygon_area/