View source for $onpoly

Returns [[$true]] if the two polygons overlap. [[$false]] otherwise.

 $onpoly(n1,n2,x,y,x,y,...)

* n1 is the number of points in the first polygon
* n2 is the number of points in the second polygon
* The rest of the parameters are the polygon points. If n1 = 5 and n2 = 3, there must be 8 X coordinates and 8 Y coordinates

==Example==
 $onpoly(3,3,1,1,5,5,10,0,2,2,4,4,9,0)

Returns: [[$true]] (The two triangles overlap)

[[Category:Picture Windows]][[Category:Text and Number Identifiers]]