private void DrawScene (ContextWrapper cw, double alpha)
{
var R = 60.0;
var dR = R - 10.0;
cw.Translate(cw.Center);
var scale = Math.Min (cw.Width, cw.Height) / 250.0;
cw.Context.Scale (scale, scale);
cw.Context.Rotate(alpha);
cw.Circle(0, -dR, R);
cw.Color = color1;
cw.Context.Fill();
cw.Context.Rotate(Angle.PI(2,3));
cw.Circle(0, -dR, R);
cw.Color = color2;
cw.Context.Fill();
cw.Context.Rotate (Angle.PI(2,3));
cw.Circle(0, -dR, R);
cw.Color = color3;
cw.Context.Fill();
}
protected void OnDrawingarea1ExposeEvent (object o, ExposeEventArgs args)
{
var cw = new ContextWrapper (o);
cw.Translate (cw.Center);
cw.Context.LineWidth = 1;
cw.Circle (0, 0, 50);
cw.Context.StrokePreserve ();
cw.PushColor ();
cw.Color = new Color2 ("#FFC0CB");
cw.Context.Fill ();
cw.Circle (-50, -50, 100);
cw.PopColor ();
cw.Context.StrokePreserve ();
cw.Color = new Color2 ("yellow", 0.5);
cw.Context.Fill ();
cw.Color = new Color2 ("black");
cw.RoundedRectangle (new Rectangle(50, 50, 100, 50), 15);
cw.Context.Stroke ();
cw.Context.IdentityMatrix ();
cw.Translate (cw.Center);
var rnd = new Random ();
var points = new PointD[15];
for (var i = 0; i < points.Length; i++) {
var p = new PointD (rnd.Next (200) - 100, rnd.Next (200) - 100);
points[i] = p;
}
cw.Polygon (points);
cw.Context.StrokePreserve ();
cw.Context.Fill ();
cw.Close ();
}