private void pictureBox1_Paint(object sender, PaintEventArgs e) { e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; e.Graphics.TranslateTransform(DrawOrigin.X, DrawOrigin.Y); e.Graphics.ScaleTransform(DrawScale.Width, DrawScale.Height); SegmentList L1 = Poly.Offset(7); SegmentList L2 = Poly.Offset(-7); for (int i = 0; i < Count; i++) { using (Pen pen = new Pen(Color.Black, 1)) { pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid; e.Graphics.DrawPoint(Poly.Lines[i].StartPoint, pen); e.Graphics.DrawPoint(Poly.Lines[i].EndPoint, pen); pen.Width = 2; e.Graphics.DrawLine(L1.Lines[i], pen); e.Graphics.DrawLine(L2.Lines[i], pen); pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash; pen.Width = 1; //e.Graphics.DrawPipe(12f, Poly.Lines[i], Color.Yellow, Color.Black); //e.Graphics.DrawLine(Poly.Lines[i], pen); } if (i == Selected) { using (Pen pen = new Pen(Color.FromArgb(92, 250, 92, 92), 2)) { pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid; e.Graphics.DrawLine(L1.Lines[i].Offset(2), pen); e.Graphics.DrawLine(L2.Lines[i].Offset(-2), pen); //e.Graphics.DrawLine(Poly.Lines[i], pen); } } } }