Three dimensional graphics system and method with correction to

Details Three dimensional graphics system and method with correction to Three dimensional graphics system and method with correction to

1996-09-20

1998-05-12

Herndon, Heather R.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345422, G06T 1540

Patent

active

057512906

ABSTRACT:
A method and system are provided for drawing one or more surfaces. The system includes a drawing processor, a frame buffer with z buffer and a display device, such as a display monitor. The drawing processor can perform all of the following steps. A first pixel in a first row is selected. The first pixel is near a first point at which a projection onto a plane of view of a first edge of a first surface intersects the first row of pixels in the plane of view. A first distance from the first point to a second point on the first surface is determined. The first point is a projection onto the plane of view of the second point. The first distance is then corrected by a first value representing a difference in distance between the first distance and a distance from the first pixel to a third point on the first surface. The first pixel overlies, e.g., and is centered at, a point that is a projection onto the plane of view of the third point. The corrected first distance is assigned to the first pixel as representing a distance from the first pixel to the first surface.

REFERENCES:
patent: 5220646 (1993-06-01), Fossum
patent: 5280568 (1994-01-01), Obata
patent: 5295234 (1994-03-01), Ishida et al.
patent: 5313566 (1994-05-01), Hedley et al.
patent: 5542032 (1996-07-01), Pritt
patent: 5561750 (1996-10-01), Lentz

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