public List <clsPoint> Intersect(clsLine l1, bool sortByDistToL1P1 = false)
{
List <clsPoint> myPts = new List <clsPoint>();
int i;
int j;
clsLine l2;
clsPoint p1;
double d1;
double d2;
for (i = 0; i <= NumPoints; i++)
{
j = i + 1;
if (j > NumPoints)
{
j = 0;
}
l2 = new clsLine(Point(i), Point(j));
p1 = l1.IntersectShortLine1(l2);
if (p1 != null)
{
myPts.Add(p1);
}
}
if (sortByDistToL1P1)
{
for (i = 0; i <= myPts.Count - 2; i++)
{
d1 = myPts[i].Dist(l1.P1);
for (j = i + 1; j <= myPts.Count - 1; j++)
{
d2 = myPts[j].Dist(l1.P1);
if (d2 < d1)
{
p1 = myPts[i];
myPts[i] = myPts[j];
myPts[j] = p1;
}
}
}
}
return(myPts);
}