times(U, V, R1);
                 times(R1, T, R);
                 mat3D F3D;
                 frame(Wx, Wy, Wcx, Wcy, F3D);

                 System::Collections::Generic::List<polygon3D^> ^processedPolygons = gcnew System::Collections::Generic::List<polygon3D^>;
                 for (int i = 0; i < polygons.Count; i++) {
                    polygon3D^ p  = polygons[i];
                    polygon^  p1 = gcnew polygon(0);
                    polygon3D^ p2  = gcnew polygon3D(0);
                    point3D A;
                    point A1, A2, c;
                    vec3D a, a1;
                    vec a2, a3;

                    for (int j = 0; j < p->Count; j++) {
                        point2vec(p[j], a);
                        timesMatVec(R, a, a1);
                        timesMatVec(F3D, a1, a1);
                        vec2point(a1, A);
                        p2->Add(A);
                    }
                    processedPolygons->Add(p2);
                 }
                 if (fill) {
                     Warnock(processedPolygons, Rectangle(Pmin.x + 1, Pmin.y + 1, Wx - 4, Wy - 4), g, colors, Form::BackColor);
                 } else {
                     for (int i = 0; i < processedPolygons->Count; i++) {
                         System::Collections::Generic::List<PointF> ^toDraw = gcnew System::Collections::Generic::List<PointF>;
                         for (int j = 0; j < processedPolygons[i]->Count; j++) {
                             toDraw->Add(PointF(processedPolygons[i][j].x, processedPolygons[i][j].y));
                            }
                         g->DrawPolygon(gcnew Pen(colors[i]), toDraw->ToArray());
                     }
                 }
                 g->DrawString(prOrtho? "Ortho" : "Perspective", textFont, textBrush, Wx - 80, top + 5);