Titlebook: Object-Oriented Graphics; From GKS and PHIGS t Peter Wisskirchen Book 1990 Springer-Verlag Berlin Heidelberg 1990 Graphikstandards.Graphisc

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Symbolic Computationhttp://image.papertrans.cn/o/image/700175.jpg

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https://doi.org/10.1007/978-3-642-84247-4Graphikstandards; Graphische Systeme; Layout; Picking; computer graphics; geometric modeling; graphic stan

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Introduction,In recent years the term . has become one of the most heavily used slogans in computer science. In fact, it is used in two different contexts: in describing user interfaces and in connection with object-oriented programming languages and environments.

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Graphics Part Hierarchies,When we look at the following picture, a schematic illustration of the front panel of a car radio, we intuitively understand that it is made up of parts: the radio has two switchboards, each switchboard consists of four buttons, a button consists of a square and a circle.

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GEO++ in Smalltalk-80,In this chapter, aspects for implementing GEO++ in Smalltalk-80 are discussed. In this, we concentrate on the problem of how a group with its parts may be represented compactly. It should be noted that GEO++ is not completely implemented as of this writing.

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Additional Concepts and Tools,In this chapter we will discuss how a graphics system can be enriched with additional semantic support alongside the part hierarchy. After an introductory look into this field, farther-reaching concepts, ., are discussed. At the end of the chapter we ask about relations between hybrid knowledge representation concepts and computer graphics.

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Towards an Object-Oriented Standard?,In this chapter we discuss some requirements for an object-oriented graphics standard. We discuss briefly the political aspects of standardization and then continue with open questions to be decided by a standardization committee.

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978-3-642-84249-8Springer-Verlag Berlin Heidelberg 1990