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Two-Pass Clipping of Thick Lines

IP.com Disclosure Number: IPCOM000035178D
Original Publication Date: 1989-Jun-01
Included in the Prior Art Database: 2005-Jan-28

Publishing Venue

IBM

Related People

Authors:
Clegg, JS Downs, T Niblett, PD Sideserf, RA [+details]

Abstract

In a graphics display with a Draw Thick Line Command, errors occur at the boundaries of a display area when only simple software clipping is used. Disclosed is an arrangement in which, firstly, an expanded window is clipped by software and, secondly, a smaller display area is defined by hardware scissoring to display thick lines correctly.