Browsing Issue 2 by Issue Date

Now showing items 1-6 of 6

    • Survey of Continuities of Curves and Surfaces 

      Veltkamp, Remco C. (Blackwell Science Ltd and the Eurographics Association, 1992)
      This survey presents an overview to various types of continuity of curves and surfaces, in particular parametric (Cn), visual or geometric (Cn, Gn), Frenet frame (Fn), and tangent surface continuity (Tn), and discusses the ...

    • User Interface Management Systems for Engineering Applications 

      Sastry, Lakshmi (Blackwell Science Ltd and the Eurographics Association, 1992)
      Essential features of a User Interface Management System (UIMS) from the perspective of engineering applications user interface development are described. Three commercially available UIMS are validated against this set ...

    • Integer de Casteljau Algorithm for Rasterizing NURBS Curves 

      Anantakrishnan, Narayanan; Piegl, Les A. (Blackwell Science Ltd and the Eurographics Association, 1992)
      An integer version of the well-known de Casteljau algorithm of NURBS curves is presented here. The algorithm is used to render NURBS curves of any degree on a raster device by turning on pixels that are closest to the ...

    • A Statistical Comparison of Two Hidden Surface Techniques: the Scan-line and Z-buffer Algorithms 

      Slater, Mel; Drake, Kieron; Davison, Allan; Kordakis, Emmanouell and Billyard, Adam and Miranda, Eliot (Blackwell Science Ltd and the Eurographics Association, 1992)
      This paper compares two image space hidden surface removal algorithms for polygonal scenes. These are the z-buffer and scan-line algorithms. There is first an overview of each algorithm, followed by a simulation experiment, ...

    • Ray Coherence Between a Sphere and a Convex Polyhedron 

      Horvath, Tamas; Marton, Gabor; Risztics, Peter; Szirmay-Kalos, Laszlo (Blackwell Science Ltd and the Eurographics Association, 1992)
      Using the two ray coherence theorems of Ohta and Maekawa the computation time of ray tracing algorithms for scenes of spheres and convex polyhedra can be reduced considerably. This paper presents further theorems which, ...

    • PHIFI: A PHIGS Interactive System for the Visualization of Scalar and Vector Fields 

      Ascani, Fabrizio; Moltedo, Laura (Blackwell Science Ltd and the Eurographics Association, 1992)
      This paper describes the characteristics of PHIFI, an interactive system for the visualization of scalar and vector fields. PHIFI has been developed at the IAC where applications of the system have also been investigated.