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Posted 18 September 2012 - 02:11 AM
Posted 18 September 2012 - 05:11 AM
Posted 18 September 2012 - 05:39 AM
width = d*tan(fov/2); height = aspect*d*tan(fov/2);where fov is the full vertical field of view, and aspect is the width-to-height aspect ratio of the view volume. At this particular depth d, the visible coordinate system range from -width to width in the horizontal direction, and from -height to height in the vertical direction.