public Segment2D CheckAndAddSegment(Vertex2D a, Vertex2D b)
{
var idx = FindSegment(a, b, E);
Segment2D s;
if (idx < 0)
{
s = new Segment2D(a, b);
E.Add(s);
}
else
{
s = E[idx];
}
s.Increment();
return(s);
}
public static bool CheckEqual(Segment2D s0, Segment2D s1)
{
return
((CheckEqual(s0.a, s1.a) && CheckEqual(s0.b, s1.b)) ||
(CheckEqual(s0.a, s1.b) && CheckEqual(s0.b, s1.a)));
}
public bool HasSegment(Segment2D s)
{
return((s0 == s) || (s1 == s) || (s2 == s));
}
bool ExternalPSLG(Segment2D s)
{
return(ExternalPSLG(s.Midpoint()));
}
public void RemoveTriangle(Segment2D s)
{
T.FindAll(t => t.HasSegment(s)).ForEach(t => RemoveTriangle(t));
}