Article View: comp.sys.mac.apps
Article #7050PICTs
From: Douglas A. Norton
Date: Sat, 02 Feb 1991 05:49
Date: Sat, 02 Feb 1991 05:49
25 lines
1716 bytes
1716 bytes
!!!! Could anyone who answers this plea please either email or
use comp.sys.mac.programmer !!!!
Can someone help me? I want to read a gray scale PICT file and use the
resulting bit map from my offscreen. I can do all that up to a certain
point; these two cases are the closest I can get:
1- All the colors are displayed correctly but the intesities are backwards
ie 255-p(x,y)
2- All the colors are displayed correctly and all the numbers but 0&255 are
correct. In this case black is 255 and white is 0
What I want is white(255)..(1)gray(254)..(255)black. I've tried to make
my own off screen device and it works the way I want, that is until I make
a PICT from that bitmap with CopyBits and print that PICT on a LaserWriter
using the 6.0.2 driver. Everything prints correct but black and white are
switched. But if I store that same PICT to a file or clipboard and read it
into another program it displays correctly but when that program prints it
it prints the same as my application.
I hope someone can help me...Thanks
Doug Norton
Rome Laboratory
internet: nortond@lonex.radc.af.mil
Technical Details
Message-ID:
<1991Feb2.054938.26028@lonex.radc.af.mil>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!usc!apple!voder!wlbr!lonex.radc.af.mil!nortondReferences:
<3991@client2.DRETOR.UUCP>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!usc!apple!voder!wlbr!lonex.radc.af.mil!nortond From: nortond@lonexb.radc.af.mil (Douglas A. Norton) Newsgroups: comp.sys.mac.apps,comp.sys.mac.programmer Subject: PICTs Summary: How do I get proper mapping of colors ie. 255white..0black Keywords: expect QuicKeys Message-ID: <1991Feb2.054938.26028@lonex.radc.af.mil> Date: 2 Feb 91 05:49:38 GMT References: <3991@client2.DRETOR.UUCP> Sender: nortond@lonex.radc.af.mil Organization: RADC Lines: 25 Nntp-Posting-Host: lonexb.radc.af.mil