Browsing Volume 06 (1987) by Title

Now showing items 67-86 of 114

    • HIRASP: A Hierarchical Interactive Rastergraphics System Based on Pattern Graphs and Pattern Expressions 

      Teunissen, Wim J.M.; van den Bos, Jan (Eurographics Association, 1987)
      To exploit the full capabilities of raster graphics, two and three dimensional drawing primitives should play a preponderant role in the specification of a graphics standard. In addition there should be facilities for ...

    • An Implementer s View of CGM in GKS Environment 

      Moltedo, L.; Noferini, A. (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • Inaugural Meeting of the EUROGRAPMCS Spanish Chapter 

      Duce, D A (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • Institutional Membership Column 

      Encarnacao, J. L. (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • Interaction Management in CAD Systems with History Mechanism 

      Yamaguchi, Yasushi; Kimura, Fumihiko; Ten Hagen, Paul J. W. (Eurographics Association, 1987)
      User friendliness is one of the unresolved problems in CAD systems. There are many possible directions for improving user friendliness. Understanding of the modeling process is one of the most important directions. It is ...

    • Interactive Generation of Fractal Objects 

      Kaandorp, J. A. (Eurographics Association, 1987)
      In this paper a description is given of the development of data structures by which a large class of fractal objects can be represented using production rules, together with an algorithm to generate these objects. These ...

    • An Interactive Graphic Simulator for the Teaching of Fibrendoscopic Techniques 

      Gillies, Duncan; Williams, Christopher (Eurographics Association, 1987)
      A simulator has been designed and implemented for teaching the skills required for fibrendoscopic investigation of the colon. The student using the simulator manipulates a dummy endoscope control head in which the rotary ...

    • An Intersecting Modification to the Bresenham Algorithm 

      Skala, Viclav (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • An Intersection-Sensitive Hidden-Surface Algorithm 

      Devai, Ferenc (Eurographics Association, 1987)
      Given a set of pairwise disjoint planar polygonal faces with altogether N edges in the three-dimensional space. Let k be the number of intersection points of the projections of the edges in a projection plane, 0 < k < ...

    • Irregular Polygon Fill Using Contour Encoding 

      Gourret, J.P.; Paille, J. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      A filling algorithm for irregular polygons is described. This algorithm is oriented towards raster graphics and uses image memories as job areas. The algorithm is based on the encoding of polygon boundaries by contour ...

    • Logical Input Devices and Interaction 

      van Liere, R.; ten Hagen, P. J. W. (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      The logical input device model, as is adopted in the standardized graphics package GKS, has been an accepted basis for producing device-independent graphics systems. However, when used in highly interactive graphical ...

    • Making Drawings Talk: Pictures in Minds and Machines 

      Bijl, Aart (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      Interactions between human minds and machine systems will be discussed, drawing on experience of CAD and focusing on modes of expression. Free forms of text and drawings pose deep questions when interpretations have to ...

    • A Means to Improve the GKS-3D/PHIGS Output Pipeline Implementation 

      Herman, Ivan; Reviczky, Janos (Eurographics Association, 1987)
      The output pipeline of GKS-3D/PHIGS isexamined to find some possible points where the implementation could be improved to raise efficiency while remaining strictly within the scope of the Standards. Some interesting results ...

    • A Metric for Computing Adaptive Detail in Animated Scenes Using Object-Oriented Programming 

      Blake, Edwin H. (Eurographics Association, 1987)
      A spatial metric for adapting the level of detail in a modelled object to achieve a convincing degree of realism on a display is formulated and illustrated with a simple implementation. This spatial metric is designed to ...

    • A New Algorithm for Contour-plotting 

      Brinkkernper, Sjaak; Hendriks, Harrie (Eurographics Association, 1987)
      A new algorithm for contour-plotting is introduced. The input function, tabulated or in a subroutine description, is approximated by an interpolation function. The contours of this approximating function are drawn piecewise ...

    • A New Algorithm of Space Tracing Using a CSG Model 

      Bouatouch, Kadi; Madani, M.O.; Priol, Thierry; Arnaldi, Bruno (Eurographics Association, 1987)
      This paper describes a new algorithm of space tracing. Scenes are modeled by a CSG tree. Space is subdivided regularly into 3D regions called boxes. With each box is associated a subtree which is the restriction of the ...

    • New Methods for Improving the GKS Fill Area Output Primitive 

      Herman, Ivan; Reviczky, Janos (Blackwell Publishing Ltd and the Eurographics Association, 1987)
      The fill area primitive is one of the most powerful primitives of GKS and its derivatives (GKS-3D, PHIGS etc.). Since its specrfication is extremely general, it is important to explore new approaches to achieve higher ...

    • A New Scan Line Algorithm for the Rendering of CGS Trees 

      Pueyo, Xavier; Mendoza, Joan Carles (Eurographics Association, 1987)
      A scan line algorithm is proposed to render CSG modelled solids. Scan planes intersections are obtained by means of a proposed generalisation of Porter’s algorithm. 2-D scan plane primitives are decomposed in a way that ...

    • Offers to EUROGRAPHICS Members 

      Unknown author (Blackwell Publishing Ltd and the Eurographics Association, 1987)

    • Offers to EUROGRAPHICS Members 

      Unknown author (Blackwell Publishing Ltd and the Eurographics Association, 1987)