public XbimTriangulatedMesh(int faceCount, float precision)
 {
     var edgeCount = (int)(faceCount * 1.5);
     _lookupList = new Dictionary<long, XbimTriangleEdge[]>(edgeCount);
     _faces = new Dictionary<int, List<XbimTriangleEdge[]>>(faceCount);
     _vertices = new XbimContourVertexCollection(precision);
 }
 internal XbimTriangle(XbimTriangleEdge[] edges, XbimContourVertexCollection vertices)
 {
     _vertices = vertices;
     _edges = edges;
 }