Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uflorida!novavax!ankh!branch!Kenneth.Maier
From: Kenneth.Maier@branch.FIDONET.ORG (Kenneth Maier)
Newsgroups: comp.graphics
Subject: Re: R G B Values...
Message-ID: <1258.251303EA@branch.FIDONET.ORG>
Date: 17 Sep 89 02:34:33 GMT
Organization: The Branch Office, Pompano Beach, Florida.  (305) 979-2073
Lines: 51

JR> I am plotting fractals (Mandelbrot Set) on an IBM 286 with VGA graphic
JR> am using Turbo Pascal v5.0.
 
JR> I need to be able to change certain default colors to different intens
JR> of the basic 16 colors.  TP has a procedure that allows me to define a
JR> as three values... R G B ...  Is the formula or table that I could use
JR> get these RGB values?
 
James,
  Glad to see someone every once in a while that has an interest in
fractals also!  Is this just a passing fancy or an addicting hobby like
it is for my friends and I?  We started to write our own fractal
program on the PC but dropped it when we found a program that is
already written that did everything we wanted AND MORE!!  If you can
find a copy, I would STRONGLY suggest getting FRACTINT.  It can be
found on Compuserve in the graphics section (16) or on BIX.  
  The FRACTINT program itself generates the Mandelbrot set,
cooresponding Julia sets, newton equations, plasma screens, and A LOT
MORE!!  (Has a screen with so many different types of equations that we
still haven't gone through them all!!)... Besides the equations,
FRACTINT has support for PRACTICALLY EVERY video mode ever made to run
on a PC!! (they actually ran out of key-combinations to start the video
modes so they do it through a config file)  Mouse support is included,
pictures are saved in GIF format, they can be loaded back in as 3D!!!
There is color cycling, and SOOOO much more that I'm mot even doing the
program justice!  One other neat thing is something called Video-RAM
... FRACTINT will let you generate pictures using your disk/ram so a
batch mode can be run as a background process if you are using
something like DESQVIEW -- One type of resolution that is supported is
2048x2048x256!!! I run these on the PC or PS/2 and then port them over
the HP workstation at school.  We load these up in a GIF viewer under
X-Windows and they look great!!!!   
   You mentioned in your message that you were looking for R G B
values for color maps? (I might have misunderstood you) Anyway,
FRACTINT has the option of using alternate color maps so you can write
your own with any ASCII editor and then generate pictures with these
colors instead of the default ones. Three maps are included with the
package to get you started.
 
   Well, that's it for now... I don't think I answered any of your
questions but I urge you to get a copy of FRACTINT (latest version is
9.3) -- On compuserve the filename it goes under is 'FRAINT.EXE' -- the
authors supply the source to the program also (C and ASM), but that is
in a different file which I don't know the name...
 
  -Kenneth


--  
Kenneth Maier via FidoNet node 1:369/11
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