public Poly ClipToList(Poly poly, bool clipOnPlane)
{
switch (ClassifyPoly(poly))
{
case eCP.FRONT:
return(poly.CopyPoly());
case eCP.BACK:
if (IsLast)
{
return(null);
}
return(Next.ClipToList(poly, clipOnPlane));
case eCP.ONPLANE:
float angle = Vector3.Dot(plane.n, poly.plane.n) - 1;
if (angle < Mathf.EPSILON && angle > -Mathf.EPSILON)
{
if (!clipOnPlane)
{
return(poly.CopyPoly());
}
}
if (IsLast)
{
return(null);
}
return(Next.ClipToList(poly, clipOnPlane));
case eCP.SPLIT:
Poly front = null;
Poly back = null;
SplitPoly(poly, ref front, ref back);
if (IsLast)
{
return(front);
}
Poly backFrags = Next.ClipToList(back, clipOnPlane);
if (backFrags == null)
{
return(front);
}
if (backFrags == back)
{
return(poly.CopyPoly());
}
front.AddPoly(backFrags);
return(front);
}
return(null);
}
