LineIntersect

MATLAB

[Int Px Py Len Para] = LineIntersect(P1x,P1y,P2x,P2y);

Determines if and where 2D polylines intersect.

Parameters	Description
P1x [vector]	x axis locations of first polyline
P1y [vector]	y axis locations of first polyline
P2x [vector]	x axis locations of second polyline
P2y [vector]	y axis locations of second polyline

Return Values	Description
Int [P1xP2 logical array]	Intersections tag per polyline segment
Px [P1xP2 array]	X axis intersect points
Py [P1xP2 array]	Y axis intersect points
Len [P1xP2 array]	Length to intersect
Para [P1xP2 array]	Parallel tag per polyline segment

>> P1x = [8,3,6,1,6,3,3];

>> P1y = [2,2,4,7,7,10,7];

>> P2x = [5,0,2,6,3];

>> P2y = [2,5,5,6,7];

>> IntX = [5,3.947,3.647,3]; % Expected X-axis intersects

>> IntY = [2,2.632,5.412,7]; % Expected Y-axis intersects

>> [Int Px Py Len Para] = LineIntersect(P1x,P1y,P2x,P2y)

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