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;
 }