Painting pattern generation system using outline data and flag d

Details Painting pattern generation system using outline data and flag d Painting pattern generation system using outline data and flag d

1993-09-09

1995-01-31

Herndon, Heather R.

395133, 395143, G06F 1562

Patent

active

053865022

ABSTRACT:
A painting pattern generation system for painting interior areas enclosed by outlines indicated by outline data and flag data. This includes a first memory for storing outline data, a second memory for storing flag data, and an operational circuit for reading out the outline data. The flag data in the first and the second memories performs a logical exclusive OR operation on adjacent items of the flag data in the second memory in a scan line direction, and performs an OR operation between the result of the logical exclusive OR operation and the outline data in the first memory in all of the scan line directions. Thus obtaining the painted pattern data, and a writing circuit for writing the painted pattern data obtained by the operational circuit to overlap it with subsequent outline data in the first memory.

REFERENCES:
patent: 4745575 (1988-05-01), Hawes
patent: 4970688 (1990-11-01), Minagawa et al.
patent: 4982343 (1991-01-01), Hourvitz et al.
patent: 4987551 (1991-01-01), Garrett, Jr.
patent: 5016001 (1991-05-01), Minagawa et al.
"Principles of Interactive Computer Graphics", by W. M. Newman and R. F. Sproull, for McGraw-Hill Book Company, 1979.
Ackland, "The Edge Flag Algorithm--A Fill Method for Raster Scan Displays," IEEE Transactions on Computers, vol. C-30, No. 1, Jan. 1981, pp. 41-48.

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