The following examples should convey a feeling for the differences between programming in GEO++ and programming in PHIGS. We begin with examples taken from “Understanding PHIGS” (Brown, 1985). They have been modified slightly in order to fit into a consistent example “Office Layout Application”, well known example for editing a graphics object hierarchy, first used in the standard text-book (Foley & van Dam, 1982). For the PHIGS examples, pseudocode is used. There follow some examples with our radio and consideration about interactive generation of primitives using PHIGS.
KeywordsWork Area Close Structure Graphic Object Main Menu Element Pointer
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