Shape dependent three-dimensional graphic data managing method

Details Shape dependent three-dimensional graphic data managing method Shape dependent three-dimensional graphic data managing method

1995-11-17

1998-10-27

Herndon, Heather R.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

G06T 1700

Patent

active

058283773

ABSTRACT:
An integrated data structure is provided which can be maintained and managed by selectively using data storage forms for storing graphic data representing three-dimensional figures, such as houses, roads, underground piping and the like, according to the properties of an object figure and mixing the same. Three control flags respectively specifying three kinds of operations for extension to be carried out for extending two-dimensional graphic data comprising two-dimensional coordinates (x, y) can be selectively used. An extension 1 to specify the component points of a figure by coordinates (x, y, z), an extension 2 to specify a z-coordinate indicating the altitude of a figure for the figure, and an extension 2 to specify a value d and information f indicating the construction of a figure having a predetermined shape and a method of display are used individually or in combination to form a three-dimensional figure. A variety of three-dimensional figures can be formed by using a comparatively small amount of graphic data, requiring a storage apparatus having a comparatively small storage capacity.

REFERENCES:
patent: 5379371 (1995-01-01), Usami et al.
patent: 5404428 (1995-04-01), Wu

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