protected override void OnGLRender(object sender, EventArgs args)
{
GL.Clear(ClearBufferMask.ColorBufferBit);
canvas2d.StrokeColor = PixelFarm.Drawing.Color.Blue;
//line
canvas2d.DrawLine(50, 50, 200, 200);
//--------------------------------------------
//rect
canvas2d.DrawRect(2.5f, 1.5f, 50, 50);
canvas2d.FillRect(PixelFarm.Drawing.Color.Green, 50, 50, 50, 50);
//--------------------------------------------
//circle & ellipse
canvas2d.DrawCircle(100, 100, 25);
canvas2d.DrawEllipse(200, 200, 25, 50);
canvas2d.FillCircle(PixelFarm.Drawing.Color.OrangeRed, 100, 400, 25);
canvas2d.FillEllipse(PixelFarm.Drawing.Color.OrangeRed, 200, 400, 25, 50);
//--------------------------------------------
//polygon
float[] polygon1 = new float[] {
50, 200,
250, 200,
125, 350
};
canvas2d.DrawPolygon(polygon1, 3);
float[] polygon2 = new float[] {
250, 400,
450, 400,
325, 550
};
canvas2d.FillPolygon(PixelFarm.Drawing.Color.Green, polygon2);
//--------------------------------------------
miniGLControl.SwapBuffers();
}