public void Turn(double angleX = 0, double angleY = 0, double angleZ = 0)
 {
     XEdge = startXEdge.TurnAroundAxis(Point3.Axes.X, angleX);
     YEdge = startYEdge.TurnAroundAxis(Point3.Axes.X, angleX);
     ZEdge = startZEdge.TurnAroundAxis(Point3.Axes.X, angleX);
     XEdge = XEdge.TurnAroundAxis(Point3.Axes.Y, angleY);
     YEdge = YEdge.TurnAroundAxis(Point3.Axes.Y, angleY);
     ZEdge = ZEdge.TurnAroundAxis(Point3.Axes.Y, angleY);
     XEdge = XEdge.TurnAroundAxis(Point3.Axes.Z, angleZ);
     YEdge = YEdge.TurnAroundAxis(Point3.Axes.Z, angleZ);
     ZEdge = ZEdge.TurnAroundAxis(Point3.Axes.Z, angleZ);
 }
        public void Draw(Graphics g, Pen pen, Brush brush, Font font, int offset)
        {
            var center = Center.GetDrawingPoint(scrWidth, scrHeight);
            var gPen   = new Pen(Brushes.Green, 2);
            var bPen   = new Pen(Brushes.Blue, 2);
            var mPen   = new Pen(Brushes.DarkMagenta, 2);

            //X
            g.DrawLine(gPen, center, XEdge.GetDrawingPoint(scrWidth, scrHeight));
            g.DrawString("X", font, brush, new Point3(XEdge.X - offset, XEdge.Y, XEdge.Z).GetDrawingPoint(scrWidth, scrHeight));
            //Y
            g.DrawLine(bPen, YEdge.GetDrawingPoint(scrWidth, scrHeight), center);
            g.DrawString("Y", font, brush, new Point3(YEdge.X, YEdge.Y - offset, YEdge.Z).GetDrawingPoint(scrWidth, scrHeight));
            //Z
            g.DrawLine(mPen, center, ZEdge.GetDrawingPoint(scrWidth, scrHeight));
            g.DrawString("Z", font, brush, new Point3(ZEdge.X, ZEdge.Y, ZEdge.Z - offset).GetDrawingPoint(scrWidth, scrHeight));
        }