ifsplot is a program to generate IFS (Iterated Function System)
fractals, in the plane. The user must supply, to stdin, the affine
transformations that define the IFS. Each transformation has the form

(1)	w(x,y) = (ax + by + e, cx + dy + f),

that is specified by a lines

  a b c d e f p

where the six first constants state for the transformation parameters
as in (1). The last quantity, p, is a transformation probability.
For example, the IFS that defines the Classical Sierpinski is

 0.5 0 0 0.5 0 0 0.33
 0.5 0 0 0.5 0 1 0.33
 0.5 0 0 0.5 1 0 0.34

If these transformations are stored on a file called
sierpinski.ifs, to run the program do

    ifsplot < sierpinski.ifs

For further information about IFS fractals, please read the book of
Michael Barnsley, "Fractals Everywhere", 2nd ed., Academic Press,
2000.

COMPILING
---------

This program uses the libplot library, distributed under GPL, that can
be obtained in http://www.fsf.org/software/plotutils/plotutils.html

You may edit the paths in the Makefile.

To compile, simply do

    make; make install; make test


OPTIONS
------

A complete description of the options allowed can be obtained with

     ifsplot --help

ADDITIONAL INFORMATIONS
-----------------------

This program has no home page, but it can be obtained from
http://www.mat.ufpr.br/~biloti/download

Please, let me know if you enhance this simple program.

Ricardo Biloti <biloti@mat.ufpr.br>
Department of Mathematics
Federal University of Paran, Brazil.
http://www.mat.ufpr.br/~biloti
