This fourth volume of Advances in Computer Graphics gathers together a selection of the tutorials presented at the EUROGRAPHICS annual conference in Nice, France, Septem­ ber 1988. The six contributions cover various disciplines in Computer Graphics, giving either an in-depth view of a specific topic or an updated overview of a large area. Chapter 1, Object-oriented Computer Graphics, introduces the concepts of object ori­ ented programming and shows how they can be applied in different fields of Computer Graphics, such as modelling, animation and user interface design. Finally, it provides an extensive bibliography for those who want to know more about this fast growing subject. Chapter 2, Projective Geometry and Computer Graphics, is a detailed presentation of the mathematics of projective geometry, which serves as the mathematical background for all graphic packages, including GKS, GKS-3D and PRIGS. This useful paper gives in a single document information formerly scattered throughout the literature and can be used as a reference for those who have to implement graphics and CAD systems. Chapter 3, GKS-3D and PHIGS: Theory and Practice, describes both standards for 3D graphics, and shows how each of them is better adapted in different typical applications. It provides answers to those who have to choose a basic 3D graphics library for their developments, or to people who have to define their future policy for graphics.

Inhalt

1 Object-Oriented Computer Graphics.- 1.1 Introduction.- 1.2 Basic Principles of Object-Orientation.- 1.3 Object-Orientation in Computer Graphics.- 1.4 Conclusions.- 1.5 A Note on the References.- 1.6 References.- 2 Projective Geometry and Computer Graphics.- 2.1 Introduction.- 2.2 Mathematical Preliminaries.- 2.3 Basic Elements of Projective Geometry.- 2.4 Basic Application for Computer Graphics.- 2.5 Additional Applications.- 2.6 Quadratic Curves.- 2.7 References.- 3 GKS-3D and PHIGS - Theory and Practice.- 3.1 Introduction.- 3.2 Standards for Computer Graphics.- 3.3 Primitives and Attributes for 3D.- 3.4 Structured Pictures.- 3.5 Transformations and Viewing.- 3.6 Input.- 3.7 Editing and Manipulation of Pictures.- 3.8 PHIGS PLUS.- 3.9 Case Studies.- 3.10 A Reference Model for Computer Graphics.- 3.11 Assessing GKS-3D and PHIGS Implementations.- 3.12 Survey of Available Implementations.- 3.13 References.- 4 Special Modelling.- 4.1 Texture Modelling and Synthesis.- 4.2 Special Models for Natural Objects.- 4.3 References.- 5 Developments in Ray-Tracing.- 5.1 Introduction.- 5.2 Photometry.- 5.3 Computational Geometry.- 5.4 Accelerated Ray Tracing.- 5.5 Deformation.- 5.6 Conclusion.- 5.7 References.- 6 Rendering Techniques.- 6.1 Introduction.- 6.2 Visible Surface Determination.- 6.3 Pixel Colour Determination.- 6.4 References.- List of Authors.