public void RunDDWithFilter()
 {
     var intPt = IntersectionAlgorithms.IntersectionDDWithFilter(p0, p1, q0, q1);
 }
 public void RunDDWithFilter_easy()
 {
     var intPt = IntersectionAlgorithms.IntersectionDDWithFilter(a0, a1, b0, b1);
 }