FillPolygon: Alternate and Winding Fill Modes
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class FillModesClassical : Form {
public static void Main() {
Application.Run(new FillModesClassical());
}
public FillModesClassical() {
ResizeRedraw = true;
ClientSize = new Size(2 * ClientSize.Height, ClientSize.Height);
}
protected override void OnPaint(PaintEventArgs pea) {
DoPage(pea.Graphics, ForeColor, ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
Brush brush = new SolidBrush(clr);
Point[] apt = new Point[5];
for (int i = 0; i < apt.Length; i++) {
double dAngle = (i * 0.8 - 0.5) * Math.PI;
apt[i] = new Point(
(int)(cx * (0.25 + 0.24 * Math.Cos(dAngle))),
(int)(cy * (0.50 + 0.48 * Math.Sin(dAngle))));
}
grfx.FillPolygon(brush, apt, FillMode.Alternate);
}
}
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