protected override void OnRenderFrame(FrameEventArgs e)
{
base.OnRenderFrame(e);
GL.Clear(ClearBufferMask.ColorBufferBit);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadIdentity();
//Eixo X
GL.Color3(Color.Red);
GL.LineWidth(3);
GL.Begin(PrimitiveType.Lines);
GL.Vertex2(0, 0);
GL.Vertex2(80, 0);
GL.End();
//Eixo Y
GL.Color3(Color.Green);
GL.Begin(PrimitiveType.Lines);
GL.Vertex2(0, 0);
GL.Vertex2(0, 100);
GL.End();
//Referência
GL.Color3(Color.Blue);
GL.PointSize(3);
GL.Begin(BeginMode.Points);
GL.Vertex2(0, 0);
GL.End();
circuloMaior.Desenhar();
this.circuloMenor = new Circulo(null, null, Color.Black, 3, 1, 40, centerCirculoMenor, BeginMode.LineLoop);
circuloMenor.Desenhar();
this.retangulo = new Retangulo(null, null, new Ponto4D(-70, 70), new Ponto4D(70, -70), colorRetangulo, 2);
retangulo.Desenhar();
this.SwapBuffers();
}
