private void aToolStripMenuItem_Click(object sender, EventArgs e)
{
GR_Point p = new GR_Point(endPos.X, -endPos.Y, 0f,
rnd.Next(8, 8), rnd.Next(2, 2),
rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255),
rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255));
mainScene.AddPoint(p);
UpdatePicBox();
UpdateTreeView();
}
