Method and apparatus for fast quadrilateral generation in a comp

Details Method and apparatus for fast quadrilateral generation in a comp Method and apparatus for fast quadrilateral generation in a comp

1995-06-08

1998-01-20

Nguyen, Phu K.

G06F 1500

Patent

active

057108790

ABSTRACT:
A quadrilateral is divided into two triangles so that each of the two triangles may then be filled by a triangle fill scan converter. Additionally, the vertices of a triangle are sorted to generate inputs to a fill scan converter. A circuit combines the functions of dividing the quadrilateral into triangles and generating the plane equations for the triangle fill scan converter. Accordingly, similar operations which are performed for both triangles of the quadrilateral may be shared between the plane equations for the two triangles. A circuit also combines the functions of generating the plane equations for any one triangle with automatic sorting of the triangle vertices.

REFERENCES:
patent: 4811244 (1989-03-01), Shimada et al.
patent: 5115402 (1992-05-01), Matsushino et al.
patent: 5142617 (1992-08-01), Dalrymple
patent: 5450534 (1995-09-01), Ichikawa

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