Apparatus and process for graphically representing three-dimensi

Details Apparatus and process for graphically representing three-dimensi Apparatus and process for graphically representing three-dimensi

1985-01-03

1988-01-26

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340706, G09G 100

Patent

active

047219521

ABSTRACT:
A process for the perspective representation of objects on the picture screen of a numerically controlled machine tool is described in which the object is resolved into a series of sections which are represented successively with a given perspective offset. In order to avoid the representation of covered edges of these sections, the contours of the individual section surfaces are checked prior to being represented in order to determine whether or not they overlap a previously represented contour. This checking occurs through a simple coordinate comparison, taking into account the actual perspective shift between sections.

REFERENCES:
patent: 4222048 (1980-09-01), Johnson
patent: 4490781 (1984-12-01), Kishi et al.
patent: 4509043 (1985-04-01), Mossaides
patent: 4521860 (1985-06-01), Kanematsu et al.
patent: 4530046 (1985-07-01), Munekata et al.
patent: 4556833 (1985-12-01), Kishi et al.
patent: 4558438 (1985-12-01), Jones et al.

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