public void SetViewport(ViewportSizing sizing)
{
SetViewport(sizing, 1.0f);
}
public void SetViewport(ViewportSizing sizing, double scale)
{
GL.Viewport(0, 0, Window.Width, Window.Height);
GL.LoadIdentity();
double x, y, w, h;
switch (sizing)
{
// todo: consideration to sampling origin stuff.
case ViewportSizing.Pixels:
default:
x = 0.0d;
y = 0.0d;
w = Window.Width / scale;
h = Window.Height / scale;
break;
case ViewportSizing.Unit:
x = 0.0d;
y = 0.0d;
w = scale;
h = scale;
break;
case ViewportSizing.GreaterUnit:
if (Window.Width > Window.Height)
{
x = 0.0d;
y = 0.0d;
w = 1.0d / scale;
h = Window.Height / scale / Window.Width;
}
else
{
x = 0.0d;
y = 0.0d;
w = Window.Width / scale / Window.Height;
h = 1.0d / scale;
}
break;
case ViewportSizing.LesserUnit:
if (Window.Width > Window.Height)
{
x = 0.0d;
y = 0.0d;
w = Window.Width / scale / Window.Height;
h = 1.0d / scale;
}
else
{
x = 0.0d;
y = 0.0d;
w = 1.0d / scale;
h = Window.Height / scale / Window.Width;
}
break;
}
GL.Ortho(x, w - x, h - y, y, DEPTH_MIN, DEPTH_MAX);
}
