Lucy

A project for the Systems for Parallel Processing course at FMI.

The goal is to generate a png image of the fractal set of values of c in the complex plane for which the orbit of 0 under iteration of the quadratic map

z_n = exp(cos(c * z_{n-1}))

remains bounded.

There is also a design doc in Bulgarian.

Installation

Download from https://github.com/angueln/lucy.

$ git clone https://github.com/angueln/lucy.git

Usage

With a Standalone Jar

$ lein uberjar
$ java -jar lucy-0.1.0-SNAPSHOT-standalone.jar [options]

Via Leiningen

$ lein run -r -1.0:1.0:-1.0:0.0 [options]

Options

The following command line options are recognized:

• -s or -size - dimensions of the canvas <width-in-px>x<height-in-px>, 480x480 by default;

• -r or -rect - bounds of the area of the complex plane to be drawn in the format <min-real-value>:<max-real-value>:<min-imaginary-value>:<max-imaginary-value>, -2.0:2.0:-2.0:2.0 by default;

• -t or -tasks - the number of threads to be used, 1 by default;

• -o or -output - the name of the output file, zad17.png by default;

• -q or -quiet - flag specifying that no output should be printed to stdout;

• -m or -mandelbrot - flag signalling to draw the mandelbrot set instead;

• -i or -iterations - the maximum number iterations to perform when calculating for a pixel, 20 by default.

Examples

$ lein run -r -1.0:1.0:-1.0:0.0 -s 800x400 -o a-pretty-fractal.png -t 4

License

Distributed under the Eclipse Public License version 1.0.