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    CREATING CSG MODELLED PICTURES FOR RAY-CASTING DISPLAY
    (The Eurographics Association, 1985) CORDONNIER, E.; BOUVILLE, C.; DUBOIS, J.L.; MARCHAL, I.; C.E. Vandoni
    30-picture synthesis systems used for instance in the audiovisual field or networked services require the implementation of easy-to-use aids to composition. This particular composition software realizes the sizing and locating of even complex CSG objects in a simple and direct manner. The Ray-casting method is used for display and designation.
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    GENERATING HIGH QUALITY PICTURES BY RAY-TRACING
    (The Eurographics Association, 1984) BOUVILLE, C.; DUBOIS, J.L.; MARCHAL, I.; K. BO and H.A. TUCKER
    Ray-casting techniques provide a very general framework in which many problems can be solved in a much easier way than with conventional methods. This is particularly true for the illumination model when a high level of realism is required. Another interesting feature of ray-casting is its ability to display a wide class of algebraic surfaces with a minimum of approximations. Both aspects are developped in this paper where a full lighting model, based on a theoritical approach, is presented. Then, an algorithm for the display of surfaces of revolution is described.