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From: russotto@eng.umd.edu (Matthew T. Russotto)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Another question about color on the mac...
Message-ID: <1990Jul24.135657.8415@eng.umd.edu>
Date: 24 Jul 90 13:56:57 GMT
References: <1990Jul24.065948.24098@Neon.Stanford.EDU>
Sender: news@eng.umd.edu (The News System)
Organization: College of Engineering, Maryversity of Uniland, College Park
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In article <1990Jul24.065948.24098@Neon.Stanford.EDU> jhsu@Neon.Stanford.EDU (Jeffrey H. Hsu) writes:

>I would really appreciate some help. I have a file that contains a list of 
>pixels and the  RGB values for each pixel.
>
>What I want to know is...is there a simple way to draw the picture represented
>by the file on a color Mac?

Well, there is, but it take about forever and a day.

RGBColor color;
int i;

for (i=0;i<numcoord;i++) {
	color.red = Red[i];
	color.green = Green[i];
	color.blue = Blue[i];
	SetCPixel(XCoord[i],YCoord[i],&color);
)

A better way to do it might be to set up a direct RGB GWorld offscreen and
CopyBits it to the screen.  It will probably be faster and certainly will
produce a better rendering due to 32-bit quickdraw's dithering.
(unless you are using a full-color screen)
--
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
][, ][+, ///, ///+, //e, //c, IIGS, //c+ --- Any questions?
		Hey!  Bush has NO LIPS!