Advances in Object-Oriented Graphics I by Yen-Ping Shan (auth.), Dr. Edwin H. Blake, Dr. Peter

By Yen-Ping Shan (auth.), Dr. Edwin H. Blake, Dr. Peter Wisskirchen (eds.)

Object-oriented structures have won loads of acceptance lately and their program to pictures has been very winning. This ebook records a few contemporary advances and exhibits various parts of present examine. the aim of the ebook is: - to illustrate the intense useful application of object-oriented tools in special effects (including person interfaces, picture synthesis, CAD), - to envision awesome examine matters within the box of object-oriented photographs, and specifically to investi- gate extensions and shortcomings of the method whilst utilized to special effects. Papers incorporated within the e-book expand latest object-oriented graphical ideas, equivalent to Smalltalk's "model view controller" or "constraints", introduce using complicated and protracted gadgets in photos, and provides methods to direct manipulation interfaces. The reader is gifted with an in-depth therapy of a few major present pictures platforms, either for consumer interfaces and for snapshot synthesis. There are theoretical surveys and chapters pointing to new instructions within the huge box of special effects. computing device language scientists will discover a important critique of object-oriented language constructs and recommended how you can expand object-oriented theory.

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Advances in Object-Oriented Graphics I

Object-oriented structures have received loads of reputation lately and their software to portraits has been very winning. This publication records a couple of fresh advances and shows quite a few components of present learn. the aim of the publication is: - to illustrate the intense sensible software of object-oriented tools in special effects (including consumer interfaces, photograph synthesis, CAD), - to check extraordinary study concerns within the box of object-oriented pictures, and specifically to investi- gate extensions and shortcomings of the method while utilized to special effects.

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Structures (list, set, tuple) and objects. Each of these components can be edited. ) are edited in a textual manner. Boolean (viewed as a two state button) and bits, which cannot be edited as text, are exceptions. Atoms can be copied and pasted within a presentation and between different presentations. LOOKS type-checks dynamically. For instance, one cannot type something other than a digit in an integer field. Structures can be copied and pasted. The end-user can copy a tuple and paste it on a tuple having the same type.

Venisl! • Verone flore-nell! erase 1000 900 800 700 600 - 500 400 300 200 100 - I11III Milan o I. t> Figure 3: Presentations customized by program A specific presentation is a programming extension of LOOKS. When displaying an object, the application can require the use of a specific presentation. Programming a specific presentation is similar to adding a new widg~t in a toolkit. The precise description of this programming process is beyond the scope of this chapter. 11. A Programming Example The following example illustrates how to use the capabilities of LOOKS from the programming perspective.

The various features of the system are described from Section 3 to 10. Section 11 illustrates these features with a short programming example. As a conclusion, Section 12 presents the current state of the LOOKS system and discusses the future of the project: evaluation, tuning and improvements, additional functions, etc. We assume the reader familiar with the basic object-oriented and programming concepts. The few required to understand the content of this chapter are: typing, message passing, encapsulation, object identity, methods and classes.

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