This method sets the position and size of the Camera viewport in a single call.
If you're trying to change where the Camera is looking at in your game, then see
Camera.setScroll instead. This method is for changing the viewport
itself, not what the camera can see.
By default a Camera is the same size as the game, but can be made smaller via this method, allowing you to create mini-cam style effects by creating and positioning a smaller Camera viewport within your game.
The top-left x coordinate of the Camera viewport.
The top-left y coordinate of the Camera viewport.
The width of the Camera viewport.
The height of the Camera viewport.
This Camera instance.