Fitting a rectangle into screen with XNA
- by alecnash
I am drawing a rectangle with primitives in XNA. The width is:
width = GraphicsDevice.Viewport.Width
and the height is
height = GraphicsDevice.Viewport.Height
I am trying to fit this rectangle in the screen (using different screens and devices) but I am not sure where to put the camera on the Z-axis. Sometimes the camera is too close and sometimes to far.
This is what I am using to get the camera distance:
//Height of piramid
float alpha = 0;
float beta = 0;
float gamma = 0;
alpha = (float)Math.Sqrt((width / 2 * width/2) + (height / 2 * height / 2));
beta = height / ((float)Math.Cos(MathHelper.ToRadians(67.5f)) * 2);
gamma = (float)Math.Sqrt(beta*beta - alpha*alpha);
position = new Vector3(0, 0, gamma);
Any idea where to put the camera on the Z-axis?
