Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!decwrl!ogicse!milton!sumax!amc-gw!kenb
From: kenb@amc.com (Ken Birdwell)
Newsgroups: comp.graphics
Subject: Re: Ray-tracing
Message-ID: <1991Jun26.021102.9027@amc.com>
Date: 26 Jun 91 02:11:02 GMT
Reply-To: kenb@polaris.amc.com ()
Distribution: na
Organization: Applied Microsystems, Redmond, WA
Lines: 38

In article <84569@bu.edu> krazykid@bass.bu.edu (Ernest Kim) writes:
>In article <382@bibsyst.UUCP> ingar@bibsyst.UUCP (ingar) writes:
>>
>> I have tried to program a ray tracing program, but now when 
>>i almost have finished I have discovered that my lines isn't lines,
>>they are curves! Can anybody help me??
>>If you have some source I would be glad.
>
>I am not sure of this, but someone told me that gamma correction is used to
>compensate for the curve of a monitor, so maybe your gamma correction is off
>for your monitor.  Someone please correct me if I am wrong.
>
>Ernie
>krazykid@bu-pub.bu.edu

This is reason #374 why we need a moderator.

The question lacks enough information to even guess at, and Ernies answer 
is totally wrong.  Would whoever is in charge of the moderator vote 
please post where we should send our votes?   I've been watching 
news.announce.newsgroups, news.groups and comp.graphics for the last 
month and I've apparently missed the posting.   I saw the posting on 
the number of votes received so far (very few) but there was no mention 
of where to vote.

Gamma correction has to do with adjusting for non-linearities in 
the monitor's brightness.  In simple terms this is how to fix the problem 
of colors set to half intensity appearing much less than half as bright as 
the same colors set to full intensity.  Most any graphics book will discuss 
this in detail.  Look under computer graphics in your local libraries card 
catalog for books on the subject. Addresses of Libraries can be found in your 
local phone book.  If you don't have a phone book, call 1-555-1212 and ask the 
operator for help in finding a library near you.

[Note for the humor impaired: the previous paragraph ended with a slight 
undercurrent of sarcasm but was not intended as a personal attack.]

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