void SetSun()
{
ambientColor = new OpenTK.Vector4(ambient, ambient, ambient, difuse);
difuseColor = new OpenTK.Vector4(difuse, difuse, difuse, difuse);
specularColor = new OpenTK.Vector4(specular, specular, specular, specular);
GL.Light(LightName.Light0, LightParameter.Ambient, ambientColor);
GL.Light(LightName.Light0, LightParameter.Diffuse, difuseColor);
GL.Light(LightName.Light0, LightParameter.Specular, specularColor);
GL.Light(LightName.Light0, LightParameter.Position, sunPos);
}