Determines if two polygons intersect.
The polygon vertices are contained in a single matrix of dimension Nx2 (or 2xN), where N >= 3 is the number of vertices. The dimension 2 corresponds to the x,y positions. For example, a square of side length 1 can be described by V = [ 0,0; 1,0; 1,1; 0,1] or V = [ 0,1,1,0;0,0,1,1].
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Syntax |
Description |
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out = polyintersect(V1,V2); |
Returns
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Example
The following example illustrates the different possible intersection situations for two polygons:
V1 = [ 0,0; 1,0; 1,1; 0,1]; V2 = [ 0,0; 2,0; 2,2; 0,1]; ?polyintersect(V1,V2); result: 2 ?polyintersect(V1,V2+0.5); #Shift V2 to the right by 0.5 result: 1 ?polyintersect(V1,V2+1); #Shift V2 to the right by 1 result: 0.5 ?polyintersect(V1,V2+2); #Shift V2 to the right by 2 result: 0
See Also
List of commands , polyarea , centroid , inpoly , polygrow , polyand , polyor , polydiff , polyxor