public static Intersection GetLineIntersection(Line line1, Line line2)
{
// Doc 참조할 것.
// (line2 - line1) x (line2Direction) / line1Direction x line2Direction
double determinant = Vector2.Cross(line1.Direction, line2.Direction);
// 두 직선이 평행한 경우이다.
if (UMath.IsZero(determinant))
{
return(new Intersection(true, Vector2.Zero));
}
double p = Vector2.Cross(line2.InPoint - line1.InPoint, line2.Direction) / determinant;
Vector2 intersection = line1.InPoint + p * line1.Direction;
return(new Intersection(false, intersection));
}
