private void DrawPolygon(Pen p)
{
SutherHodgmanAlgo LeftClip = new SutherHodgmanAlgo(Points);
SutherHodgmanAlgo RightClip = new SutherHodgmanAlgo(TransformedPoints);
DDA DDAAlgo = new DDA(g);
for (int i = 0; i < Points.Count; i++)
{
int k = (i + Points.Count - 1) % Points.Count;
DDAAlgo.Draw(p, Points[i].X, Points[i].Y, Points[k].X, Points[k].Y);
DDAAlgo.Draw(p, TransformedPoints[i].X, TransformedPoints[i].Y, TransformedPoints[k].X, TransformedPoints[k].Y);
if (Points.Count > 1)
{
LeftClip.SutherHodgman(g, InPolygonPen, LeftEdges.ToArray());
}
if (Points.Count > 1)
{
RightClip.SutherHodgman(g, InPolygonPen, RightEdges.ToArray());
}
}
}
public void SutherHodgman(Graphics g, Pen p, Point[] Edges)
{
for (int i = 0; i < Edges.Length - 1; i++)
{
Clip(new Point[2] {
Edges[i], Edges[i + 1]
});
}
Clip(new Point[2] {
Edges[Edges.Length - 1], Edges[0]
});
DDA DDAAlgo = new DDA(g);
for (int j = 0; j < PoligonPoints.Count - 1; j++)
{
DDAAlgo.Draw(p, PoligonPoints[j].X, PoligonPoints[j].Y, PoligonPoints[j + 1].X, PoligonPoints[j + 1].Y);
}
if (PoligonPoints.Count > 1)
{
DDAAlgo.Draw(p, PoligonPoints[PoligonPoints.Count - 1].X, PoligonPoints[PoligonPoints.Count - 1].Y, PoligonPoints[0].X, PoligonPoints[0].Y);
}
}