# Usage This document provides example usages. # Rendering Once you've explored the fractal and found coordinates and a zoom level that you like, use the application to generate a high-quality image. Try these: ./mandelbrot -o default.png ./mandelbrot -x -0.235125 -y 0.827215 -z 1000000 -i 10000 -o trees.png ./mandelbrot -x -0.761825 -y -0.084875 -z 323500 -i 2000 -o spiral.png # Quality There are a few ways to increase the render quality, including: * Use `-s` to increase the subsample size, which controls anti-aliasing. Increasing this number will dramatically increase the amount of time to render the image. Usually a setting of 4 will suffice. * 1 - The default (no anti-aliasing). * 2 - Can leave visible artefact streaks. * 4 - Overall smooth appearance. * 9 - High-quality smoothing. * 16 - Supreme smoothing. * 32 - Extraordinarily smooth. * Use `-w` and `-h` to change the width and height. * Use `-i` to increase the number of iterations. # Interesting Regions [Paul Bourke](http://paulbourke.net/fractals/mandelbrot/) and [Alan Dewar](http://www.cuug.ab.ca/dewara/mandelbrot/Mandelbrowser.html) have written about some interesting regions. Regions are given by complex plane coordinates and a zoom level, including: | x | y | zoom | |---:|---:|-----:| | -0.170337 | -1.0650600 | 78125 | 0.428840 | -0.2313450 | 78125 | -1.629170 | -0.0203968 | 78125 | -0.761574 | -0.0847596 | 78125 | -0.746300 | 0.1102000 | 0.005 | -0.745300 | 0.1127000 | 0.00065 | -0.745290 | 0.1130750 | 0.00015 | -0.745428 | 0.1130090 | 0.00003 | -0.925000 | 0.2660000 | 0.032 | -1.250660 | 0.0201200 | 0.00017 Other settings to try: | x | y | zoom | iterations | |---:|---:|-----:|-----------:| | -0.761574 | -y -0.0847596 | 781250 | 250 You will have to change their zoom levels and increase the number of iterations to see these areas using this application.