static void GetVertices(List <XYZ> vertices, Solid s)
{
Debug.Assert(0 < s.Edges.Size,
"expected a non-empty solid");
Dictionary <XYZ, int> a
= new Dictionary <XYZ, int>(
new XyzEqualityComparer());
foreach (Face f in s.Faces)
{
Mesh m = f.Triangulate();
foreach (XYZ p in m.Vertices)
{
if (!a.ContainsKey(p))
{
a.Add(p, 1);
}
else
{
++a[p];
}
}
}
List <XYZ> keys = new List <XYZ>(a.Keys);
Debug.Assert(8 == keys.Count,
"expected eight vertices for a rectangular column");
keys.Sort((p, q) => Util.Compare(p, q));
foreach (XYZ p in keys)
{
Debug.Assert(3 == a[p],
"expected every vertex of solid to appear in exactly three faces");
vertices.Add(p);
}
}
int IComparable <XYZ> .CompareTo(XYZ a)
{
return(Util.Compare(this, a));
}