   CreatePerspectiveFieldOfView implementation
  Where can I find the implementation of CreatePerspectiveFieldOfView ?Thanks.   
  Here's a C# call of it:projectionMatrix = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45.0f)And here's the documentation for it from msdn http://msdn.microsoft.com/en-us/library/microsoft.xna.framework.matrix.createperspectivefieldofview.aspxNot sure if this was what you were looking for, but I hope it helps =]   ;  Hi :)I would actually like to know how it works hence the implementation (and not the declaration).Thanks!;  This information can be found in the native documentation for this function:http://msdn.microsoft.com/en-us/library/bb205350(VS.85).aspxHere's the relevant section:xScale0000   yScale  0000  zf/(zf-zn)    100  -zn*zf/(zf-zn)0where:yScale = cot(fovY/2)xScale = yScale / aspect ratio