Computer graphics processing and selective visual display system – Computer graphics processing – Shape generating
Patent
1997-10-27
1999-11-16
Nguyen, Phu K.
Computer graphics processing and selective visual display system
Computer graphics processing
Shape generating
G06F 1500
Patent
active
059866748
ABSTRACT:
It is an object to provide a three-dimensional game apparatus and information storage medium which can display an object located at a position nearer a viewpoint to improve the reality in an image. It is judged whether or not a first object (or polygon or curved surface) is located at a position near the viewpoint. When the first object is located at the position near the viewpoint, a second object which is N times as large as the first object is located at a position spaced away from the viewpoint by L2=N.times.L1. The above judgment is performed based on whether or not the length L1 or depth coordinate Z1 of a vector is equal to or less than a given value. The drawing priority is determined by using 1/N of the depth coordinate of the second object or a second polygon or by using the depth coordinate of the first object or a first polygon. The shape data of the second object N times as large as the first object has been previously provided. The distance between a vertex and the viewpoint may be magnified N times when the vertex approaches the viewpoint.
REFERENCES:
patent: 5524187 (1996-06-01), Feiner et al.
patent: 5675720 (1997-10-01), Sato et al.
Namco. Ltd.
Nguyen Phu K.
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