Issue 3
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Item Call for Participation in the EUROGRAPHICS WORKING GROUP on COMPUTER GRAPHICS HARDWARE(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item Calendar of Events(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item A Parallel HW/SW Environment for Image Synthesis(Blackwell Publishing Ltd and the Eurographics Association, 1989) Paoluzzi, A.; Rosina, M.; Scopigno, R.AbstractIn designing graphical workstations for high-level performance presentations of graphical models, the main goal nowadays is to perform some effective real-time traversal and rendering of data. In this paper we present a reference model of parallel processing for graphics, taking into account the main aspects of colour rendering of solid hierarchical shapes- i.e., traversal of structures, hidden surfaces removal, shadow identification and light models. In particular, a parallel design of the main graphical algorithms is presented. Three abstract machines are proposed, designed respectively for data structure traversing, for depth ordering and shadows computation and finally for shape merging and screen processing. Such abstract machines, internally parallel, may be combined in various ways to define different physical architectures.CR Categories and Subject Descriptors: C.1.2 [Multiple Data Stream Architectures] MIMD Processors, Parallel Processors- 1.3.2 [Computer Graphics] Graphics Systems- 1.3.3 [Computer Graphics] Picture Generation -Display Algorithms, Viewing Algorithms- 1.3.7 [Computer Graphics] Three Dimensional Graphics and Realism - Colour, Shading, Shadowing, Visible Line/Surface I Algorithms.Item Yet another Remark on the Modelling Clip Problem(Blackwell Publishing Ltd and the Eurographics Association, 1989) Zachrisen, MortenItem Offers to EUROGRAPHICS Members(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item Polygon Triangulation Algorithm as a Powerful Core Processor of PLAN-I(Blackwell Publishing Ltd and the Eurographics Association, 1989) Chen, Xiangping; Ying, DaoningA concise, complete and reliable algorithm for triangulating an arbitrary polygon is presented as a powerful core processor of PLAN-I (Production Layout Automation Nucleus) system1. A polygon with inner loops is converted into a non-self-intersecting polygon (NIP) through adding Bridge Edges . A triangular splitting algorithm for NIP is described in detail and successfully implemented. The program is about 300 lines in FORTRAN-77. Sweeping and local operations with respect to the triangular-faceted boundary representation are designed with the algorithm to improve functions of solid modeling in PLAN-I. The algorithm of triangulation can also be applied to Boolean operations and other issues.Item Call for Participation in the EUROGRAPHICS WORKING GROUP on VISUALIZATION IN SCIENTIFIC COMPUTING(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item LEONARDO - New Member Benefit for Members of Eurographics(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item Hidden Octree Node Removal as a Pipeline Process(Blackwell Publishing Ltd and the Eurographics Association, 1989) Heal, B.W.A processing pipeline solution to the generation and display of octree encoded 3-D objects is described. Particular emphasis is given to an algorithm which removes that part a of linear octree code which describes parts of the object which are invisible from a prescribed viewing position. The scope of the algorithm is restricted to viewing directions which are parallel to the Cartesian axes and to orthogonal projections. The algorithm is specifically designed to operate as a single stage within a pipeline of processes.Item EUROGRAPHICS ASSOCIATION UK CHAPTER(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item An Annotated PHIGS Bibliography(Blackwell Publishing Ltd and the Eurographics Association, 1989) Howard, T.L.J.Item Algorithm for Clpping Arbitrary Polygons(Blackwell Publishing Ltd and the Eurographics Association, 1989) Andreev, Rumen D.Item EUROGRAPHICS UK Chapter(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item EDITORIAL(Blackwell Publishing Ltd and the Eurographics Association, 1989) Arnold, David; de Ruiter, BehrItem Computer Graphics and Computer-Aided Design Literature: A Keyword-Indexed Bibliography for the Year 1988.(Blackwell Publishing Ltd and the Eurographics Association, 1989) Owen, JonItem EUROGRAPHICS '90(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item Migration of GKS/GKS-3D and PHIGS Discussed under the View of the Computer Graphics Reference Model(Blackwell Publishing Ltd and the Eurographics Association, 1989) Poller, Jochem; Noll, Stefan; Rix, JoachimThe Migration Problem of GKS-3D and PHIGS is discussed in this report under the view of the graphics reference model s description technique: the component and framework concept. Therefore the components of GKS-3D and PHIGS are defined. The common and different concepts are indicated and the mapping from PHIGS to GKS-3D and from GKS-3D to PHIGS is done. This mapping is performed only on the components which have been proved as a description technique suited for such purposes. The migration has two different aspects. One is the theoretical approach to prove that such a migration is possible. The other one is more practical. It gives guide-lines for the use of PHIGS and GKS-3D and shows under which circumstances both can be used together.Item COMPUTER GRAPHICS PROFESSIONALS(Blackwell Publishing Ltd and the Eurographics Association, 1989)Item Report on the Third Eurographics Workshop on Intelligent CAD(Blackwell Publishing Ltd and the Eurographics Association, 1989) Kwiers, R.S.S. PietersItem Call for Participation in the EUROGRAPHICS WORKING GROUP on INTELLIGENT CAD(Blackwell Publishing Ltd and the Eurographics Association, 1989)