Based on This Post you can get the approximate intersection point of two lines.
public IPoint GetLinesIntersection(IPoint line1P1, IPoint line1P2, IPoint line2P1, IPoint line2P2)
{
//Line 1 (p1, p2)
var A1 = line1P2.Y - line1P1.Y;
var B1 = line1P1.X - line1P2.X;
var C1 = A1 * line1P1.X + B1 * line1P1.Y;
//Line 2 (p3, p4)
var A2 = line2P2.Y - line2P1.Y;
var B2 = line2P1.X - line2P2.X;
var C2 = A2 * line2P1.X + B2 * line2P1.Y;
var determinate = A1 * B2 - A2 * B1;
IPoint intersectionPoint;
if (determinate != 0)
{
double x = (B2 * C1 - B1 * C2) / determinate;
double y = (A1 * C2 - A2 * C1) / determinate;
intersectionPoint = new Point();
intersectionPoint.X = x;
intersectionPoint.Y = y;
}
else //lines are parrallel
intersectionPoint = null;
return intersectionPoint;
}
Regards,
