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PHIGS and Part Hierarchies

  • Peter Wisskirchen
Part of the Symbolic Computation book series (SYMBOLIC)

Abstract

In the next few chapters we will be discussing in greater detail both the object-oriented kernel system GEO++ and the graphics standard PHIGS (Programmer’s Hierarchical Interactive Graphics System). PHIGS is the graphics system that especially supports a part hierarchy by handling multi-level structures. Unfortunately, there is hardly any literature on PHIGS that allows an in-depth analysis of some of the problematic points available. Such an analysis is important, however, in order to master identified weak points by introducing object-oriented design principles. We do not wish to denigrate the work of those who defined PHIGS years ago by stressing these critical points. But developments in the field of interactive programming have since progressed. The object-oriented paradigm is gaining more and more ground and, as we shall see, almost necessarily and naturally calls for the revision of some basic principles of PHIGS.

Keywords

Modeling Transformation Element Pointer Traversal Time Hierarchical Graphic Display Attribute 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1990

Authors and Affiliations

  • Peter Wisskirchen
    • 1
  1. 1.Institute for Applied Information TechnologyNational Research Center for Computer Science (GMD)Sankt Augustin 1Germany

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