A real-time three-dimensional graphics display
Sale, AHJ and Bromley, A (1975) A real-time three-dimensional graphics display. Australian Computer Journal, 7 (1). pp. 15-20.
The visible surface problem for three dimensional objects is examined from a global point of view in which planar surfaces derived from convex three-dimensional objects are regarded as the natural display elements. By retaining global information on surface and object relationships it is possible to considerably simplify the resolution of visible surfaces for a large class of realistic objects. Implementation of this approach suggests a display in which surfaces written to the display device can overlay and obscure previous picture information in the manner of an oil painting. A display system is proposed in which this is implemented by a large buffer memory which holds a complete point-by-point description of the picture in low-cost MOS shift-registers. By combining new data to be entered in the memory in a variety of ways with the data already present, it is possible to considerably enhance the displayÃÂÃÂÃÂÃÂ¢ÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂs capabilities. The buffer memory also allows an easy match of the display system to conventional (TV) video equipment.
|Keywords:||real-time display, real-time graphics, three-dimensional graphics, visible surface problem, picture processing, picture buffer memory, display buffer, MOS memory, TV display, TV video|
|Deposited By:||utas eprints|
|Deposited On:||03 Jan 2005|
|Last Modified:||18 Jul 2008 19:38|
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