Browsing Issue 4 by Issue Date

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    • A Library for Developing PHIGS Programming Tools in a PEX Environment 

      Wainer, Michael; Tan, Ting (Blackwell Science Ltd and the Eurographics Association, 1993)
      The merger of three-dimensional graphics with the X Window System has recently been standardized by adapting PHIGS, the Programmer s Hierarchical Interactive Graphics System, to the X Window System with PEX, the PHIGS ...

    • Spanning a C1-Surface over a Given Wireframe 

      Tokumasu, Shinji; Harashima, Ichirou; Nakajima, Norihiro (Blackwell Science Ltd and the Eurographics Association, 1993)
      A problem of spanning a surface of C1 continuity (C1-surface) over a given wireframe is introduced. By exploiting the concept of a super surface patch introduced in an earlier paper, we proved the existence of an approximate, ...

    • Ray Tracing an Octree: Numerical Evaluation of the First Intersection 

      Gargantini, I.; Atkinson, H. H. (Blackwell Science Ltd and the Eurographics Association, 1993)

    • The Determination of Form-Factors by Lookup Table 

      Sun, Jizhou; Zou, L.Q.; Grimsdale, R.L. (Blackwell Science Ltd and the Eurographics Association, 1993)
      Current methods for computer image synthesis using the radiosity algorithm rely heavily on the calculation of geometrical properties, known as form-factors, which quantify the energy exchange between pairs of surfaces in ...