Signal 02 Jul83

A Semaphore Corporation 1M publication for Usa users and developers. Shading a Rounded Region LlsaDraw cannot recognize that the object is one enclosed region. How can the object be shaded? Imagine using LisaOraw to construct the fOllowing region One solution is to define a more or less congruent polygon, such as: using four line segments and an arc. You group all of the objects (in an attempt to form one region) and ask LlsaDraw to shade the result, only to see: but with the Unes deflned White instead of black. Then shade the polygon, position it to overlap the original region, and send the polygon to the background. o The final result will look like Because IncJlvl(lUal Une segments have been used as boundaries, the desired reglon, shaded In the arc by the foreground object, and ShaOeCJ everywnere else by the background polygon. § Signal '2 • 25 July 1983 • se"aphore COrporation • Aptos, CA 95003 1 Issue 12 25 -1.Ily 1983 Signal is pUblished periodically by: semaphore CorporatIon 207 Granada Drive Aptos, CA 95003 Entire contents copyright i) 1983 by SeMphore Corporation • All rights reserved • No part of this publication "ay be reprOdUCed in any forft or by "eans without prior written perftission frOll 8eftaphore • 8eftaphore offers no warranty. either expressed or inplied. for any losses due to the use of any ftlterial published in Signal • SUbscriptions are free to LIsa users in the USA.. and $10 for ten issues for other SUbscribers in North Anerica.. or $20 outside of North Afterica • ForM for subscriptions fron Lisa users RUSt include a lisa serial nuflber. found under each "achine' s screen near the Lisa natlep1ate • Address changes should be sent at least four weeks in advance .. and should include your new address along with your latest issue's Railing address label • All "aterial received will be considered for publication • Signal is edited by "ike Gabrielson • All letters to the Edi tor are welco... and as Mny as pOSSible will be published in each issue • Signal reserves the right to edit all sUb"ittals • send all advertising copy and requests for rates to the Signal Advertising "anager • Vendors sending press releases are requested to telephone the Advertising "anagar for an interview at 408-688-9200 within two weeks after subnitting the "aterial • Is there 8 service SeRaphore can provide for you? Urite us or telephone 408-688-9200 • Apple.. Profile and lisa are tr8de"arks of Apple COftPUter. Inc. • Seftaphore Corporation is not affiliated with Apple Coftputer in any way • Signal is created entirely on a Lisa, using Lisaud te and LisaDraw. 2 Quote of the Month "We rlppeO apart Apple's Lisa and found it limited by limited software." That claim appeared as a caption under a small pIcture of a dIsembOweled LIsa in the two-page ad by Fortune systems In tne JUly Issue of Conputer Dealer. E) Lisa Day: August 11th Apple Is sponsoring a week long Independent Developers' conference aurlng tne Weal< from August 8th t…