public Polygon Copy(int addX = -1, int addY = -1)
{
var rtn = new Polygon();
foreach (Point pt in this.vertices)
{
rtn.vertices.Add(pt);
}
if (addX >= 0)
{
rtn.AddVertice(addX, addY);
}
return(rtn);
}
private void picBox_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Right)
{
img = poly.ReDraw((Bitmap)img, Color.Black);
picBox.Image = img;
polys.Add(poly);
polist.Items.Add(poly);
Polygon p = poly.GetClone();
VP = p.ViewPort(VP, Color.Black, img.Width, img.Height, VP.Width, VP.Height);
ViewPort.Image = VP;
VPs.Add(p);
polyflag = false;
polyfirst = true;
}
else
{
if (polyflag)
{
if (polyfirst)
{
polyfirst = !polyfirst;
poly = new Polygon();
poly.AddVertice(e.X, e.Y);
point = new Point(e.X, e.Y);
}
else
{
img = DrawLine.DDA((Bitmap)img, point.X, point.Y, e.X, e.Y, Color.Black);
picBox.Image = img;
poly.AddVertice(e.X, e.Y);
point = new Point(e.X, e.Y);
}
}
else
{
if (flag == false && polyflag == false)
{
point = new Point(e.X, e.Y);
flag = true;
}
}
}
}