System and method for producing anti-aliased lines

摘要

A system and method for providing a data processing system operable for displaying anti-aliased lines on a display device comprised of a matrix array of pixels. This system receives data pertaining to the line to be displayed, the line being defined by start and end points which position the line relative to the pixels within the matrix array. The relative position of the line with respect to pairs of pixels bounding the line are ascertained. The illumination intensities for each pixel within each pair is then dependent upon this relative position. The relative positions are ascertained by subdividing the matrix array of pixels into subpixel regions so that the subpixel nearest the intersection of the line and a theoretical boundary intersecting the pairs of pixels may be established. Illumination intensities for bounding pixels near the end points of the line are also established in the same manner and are then reduced in intensity relative to the distance from the end point to a theoretical boundary intersecting these bounding pixels.