Computer graphics is one of the most exciting and rapidly growing fields in com• puter science. Some of the most sophisticated computer systems in use today are designed for the generation of graphics displays. We all know the value of a picture as an effective means for communication, and the ability to converse pictorially with a computer is revolutionizing the way computers are being used in all areas.

This book presents the basic principles for the design, use, and understanding of graphics systems. We assume that the 'reader has no prior background in computer graphics but is familiar with fundamental computer science concepts and methods. The hardware and software components of graphics systems are examined, with a major emphasis throughout on methods for the design of graphics packages. We discuss the algorithms for creating and manipulating graphics displays, techniques for implementing the algorithms, and their use in diverse applications. Program• ming examples are given in Pascal to demonstrate the implementation and appli• cation of graphics algorithms. We also introduce the reader to the Graphical Kernel System (GKS), which is now both the United States and the international graphics• programming language standard. GKS formats for graphics-routine calls are used in the Pascal programs illustrating graphics applications,

The materiai presented in this text was developed from notes used in graduate and undergraduate graphics courses over the past several years. All of this material could be covered in a one-semester course, but this requires a very hasty treatment of many topics. A better approach is to select a subset of topics, depending on the level of the course. For the self-study reader, early chapters can be used to provide an understanding of graphics concepts, with individual topics selected from the later chapters according to the interests of the reader. ,,

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