EG1985: Recent submissions

Now showing items 21-36 of 36

    • GKS Inquiry Functions within Prolog 

      Sykes, Pete; Krishnamurti, Ramesh (The Eurographics Association, 1985)
      This paper discusses the semantics of the GKS inquiry functions within a Prolog environment and illustrates the flexibility built into a proposed Prolog binding.

    • A CONCEPT FOR A GKS MACHINE 

      Herman, Iván; Reviczky, János; Tolnay-Knefély, Tibor (The Eurographics Association, 1985)
      General ideas for the creation of a very intelligent graphic terminal are presented; this terminal should know all GKS functionalities, including the future 3D Standard as well. Multiple Workstation concept is maintained ...

    • VIEWING SOLID MODELS BY BINTREE CONVERSION 

      Koistinen, Petri; Tamminen, Markku; Samet, Hanan (The Eurographics Association, 1985)
      A hidden surface algorithm is presented for viewing constructive solid geometry representations of solids (CSG trees) by converting them implicitly into a 3-d recursive spatial subdivision (bintree). The algorithm prunes ...

    • MODEL DRIVEN SYNTHESIS OF NATURAL TEXTURES FOR 3-D SCENES 

      GAGALOWICZ, ANDRE; MA, SONG DE (The Eurographics Association, 1985)
      This paper presents a new method for the synthesis of textures on 3-D surfaces. With the exception of fractals, graftals and particle systems used for very restricted types of textures, one basic technique for the faithful ...

    • CREATING CSG MODELLED PICTURES FOR RAY-CASTING DISPLAY 

      CORDONNIER, E.; BOUVILLE, C.; DUBOIS, J.L.; MARCHAL, I. (The Eurographics Association, 1985)
      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 ...

    • DETERMINATION OF LOCAL COORDINATE SYSTEMS FOR TEXTURE SYNTHESIS ON 3-D SURFACES 

      MA, SONG DE; GAGALOWICZ, ANDRE (The Eurographics Association, 1985)
      We propose and compare three types of local coordinate systems and describe their geometric properties Several results of texture synthesis on 3-D surfaces using these local coordinate systems are presented The synthesis ...

    • TOUCHSCREEN AND COMPUTER GRAPHICS IN A SCIENCE MUSEUM 

      Clerget, Yves; Cottrell, Vincent; Raoust, Michel; Withnell, Jean (The Eurographics Association, 1985)
      Scientific information presented by a Science Museum must be both easily understood and easily memorized. Public interest must be maintained at a very high level during the presentation: interaction of the public with the ...

    • PIPEMATIC: A DISTRIBUTED SYSTEM FOR THE DESIGN OF GEOMETRICALLY TIGHT PIPING STRUCTURES 

      Sulonen, Reijo; Tikkanen, Matti (The Eurographics Association, 1985)
      The main principles of an interactive design system intended for the solution of 3D geometric placement problems are described. The first applications for the system will be related to the design of machine rooms in ships ...

    • AN IMPROVEMENT OF THE RAY-TRACING ALGORITHM 

      COQUILLART, Sabine (The Eurographics Association, 1985)
      This paper describes an improvement of the ray-tracing algorithm. The new method takes advantage of a data structure which allows us to consider only the closest objects to the path of the ray. This technique can be applied ...

    • SUBACTOR DATA TYPES AS HIERARCHICAL PROCEDURAL MODELS FOR COMPUTER ANIMATION 

      Magnenat-Thalmann, N.; D.Thalmann, (The Eurographics Association, 1985)
      An innovative kind of procedural model for computer animation is presented in the form of subactor data types. When a subactor data type is defined, many instances of this type may be defined. Each occurrence has the same ...

    • A CSG LIST PRIORITY HIDDEN SURFACE ALGORITHM 

      Jansen, F.W. (The Eurographics Association, 1985)
      Several algorithms exist for visualizing geometric models defined by constructive solid geometry (CSG). Each of these algorithms is based on standard hidden surface methods, such as ray tracing, scan-line and z-buffer ...

    • An illumination model for ray-tracing 

      MONTCEL, Bruno TEZENAS DU; NICOLAS, Alain (The Eurographics Association, 1985)

    • Colour Section 

      - (The Eurographics Association, 1985)
      Colour Section

    • THE USE OF GRAPHICAL SYMBOLIC COMMANDS (ICONS) IN APPLICATION PROGRAMS 

      Woodgate, H. Sam (The Eurographics Association, 1985)
      This paper describes the use of Graphical Symbols (Icons) as a means of communicating operating commands between application program and users. detailed in the paper is the operational command system for a "Spread Sheet ...

    • HUTWINDOWS: AN APPROACH TO USER INTERFACE DEVELOPMENT 

      Koivunen, Marja-Riitta; Mntyl, Martti (The Eurographics Association, 1985)
      The design and implementation of good graphical user interfaces is a difficult task requiring good taste and proper tools. The HutWindows system under development at Helsinki University of Technology is intended to be an ...

    • GRAPHICS PROGRAMMING FOR KNOWLEDGE-GUIDED INTERACTION 

      Tibbert, Lee; Bergeron, R. Daniel (The Eurographics Association, 1985)
      This paper describes a design approach that combines knowledge engineering techniques with an interactive graphics program. A prototype for specifying computer systems interactively is used to demonstrate the design approach. ...