Method for resolving priority between a calligraphically-display

Details Method for resolving priority between a calligraphically-display Method for resolving priority between a calligraphically-display

1991-04-03

1994-03-08

Harkcom, Gary V.

395119, 395133, 395135, G06F 1562

Patent

active

052934675

ABSTRACT:
A method for determining the proper occulation relationship between a calligraphic point and at least one of another calligraphic point and a surface in a raster image, divides the total image screen into an array of spans, each containing an ordered set of pixels which may be further divided into an array of subpixels; determines which of the subpixels on the total screen lie inside each of the raster surfaces and calligraphic points which must be considered for the image totality; then orders the distance of each of the raster surfaces from the viewing point and also orders the distance of each of the point features from the viewing point; and then compares the ordered distances of each point to at least one of the raster surface distances and other point distances to determine which of subpixels of the point or surface/other point are occluded and which subpixels are visible.

REFERENCES:
patent: 3889107 (1975-06-01), Sutherland
patent: 4625289 (1986-11-01), Rockwood
patent: 4825391 (1989-04-01), Merz
patent: 4952922 (1990-08-01), Griffin et al.
patent: 4970499 (1990-11-01), Ryherd
patent: 4970500 (1990-11-01), Hintze

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