- set-camera-viewport-offset! CAMERA X Yprocedure
Move CAMERA’s viewport (its view frustum’s near plane) by (X, Y) expressed as a fraction of the viewport’s width and height. This is generally only useful for a perspective projection, when lines should converge not to the middle of the screen, but to another point. Setting x to 0.5, for example, moves the focal centre to the right edge of the viewport.