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Item CSG Hidden Surface Algorithms for VLSI Hardware Systems(The Eurographics Association, 1986) Jansen, Frederik W.; W. StrasserConstructive Solid Geometry (CSG) is a solid modeling representation thatdefines objects ·as Boolean combinations of primitive solids. For thedisplay of such objects, both the visibility problem and the problem ofcombining the primitive solids into one composite object have to be solved.Recently, several CSG hidden surface algorithms have been published thatreduce these two problems to a combination of simple depth comparisons andlogical operations at the pixel level that can be performed in VLSI hardwaredisplay systems. An overview of these algorithms is given. Furthermore,a CSG depth-buffer algorithm is presented that combines these algorithms.Item A Pixel-Parallelhidden Surface Algorithm For Constructive Solid Geometry(The Eurographics Association, 1986) Jansen, Frederik W.; A.A.G. RequichaVLSI techniques have greatly enlarged the possibilities to design new frame buffer architectures with parallel processing capabilities down to the pixel level. For these pixel processor systems a parallel hidden surface algorithm is presented for displaying objects defined with Constructive Solid Geometry. The algorithm is based on a CSG evaluation with bitwise operations and multiple scanning of the primitives.