private void AddNewPoint(ImageEditor imgEd, MouseEventArgs e, Polygon polyg)
{
int pos = Math.Max(imgEd.CurPoints[0], imgEd.CurPoints[1]);
if (pos == polyg.VertexCount-1) pos++;
Point E = imgEd.ShiftPointIfNotEmpty(new Point(e.X, e.Y));
Graphics g = imgEd.GetGraphics();
polyg.Paint(g, new Pen(Brushes.White, 2));
polyg.AddVertexAt(pos, E);
imgEd.ReDraw();
g = imgEd.GetGraphics();
polyg.Paint(g);
imgEd.ReDraw();
imgEd.CurPoints.Clear();
}
public override void MouseDown(MouseEventArgs e, ImageEditor imgEd)
{
Point E = imgEd.ShiftPointIfNotEmpty(new Point(e.X, e.Y));
Graphics g = imgEd.GetGraphics();
imgEd.CurPolygon.AddVertex(E);
if (imgEd.CurPolygon.VertexCount > 1)
g.DrawLine(new Pen(Brushes.Black, 2), E,
new Point(imgEd.CurPolygon.GetVertex(imgEd.CurPolygon.VertexCount - 2).X,
imgEd.CurPolygon.GetVertex(imgEd.CurPolygon.VertexCount - 2).Y));
else
g.DrawRectangle(new Pen(Brushes.Black, 2), E.X, E.Y, 1, 1);
imgEd.ReDraw();
}