private static void SaveMesh(Mesh mesh, string filename) { System.IO.File.Delete(filename); using (StreamWriter sw = File.AppendText(filename)) { STL.AppendMeshToSTL(mesh, sw); Vector3D aStart = H3Ruled.Transform(new Vector3D(0, 0, -1)); Vector3D aEnd = H3Ruled.Transform(new Vector3D(0, 0, 1)); Mesh m3 = new Mesh(); AddEdge(m3, aStart, aEnd); //STL.AppendMeshToSTL( m3, sw ); } }