Mandelbrot for TI CE calculator

This application renders the mandelbrot set (in an acceptable time) on your TI CE calculator.

Installing & running

Download the MBROT.8xp of the latest release from the github page. Transfer this file to your calculator using TI connect or send it to your emulator. Then run the program by pressing the prgm button, selecting the program MBROT and pressing enter twice (to select and run MBROT).

Note the program will draw the mandelbrot set in about 90 seconds, after which you can press any key to return to the home screen. The drawing can also be aborted by pressing the on key.

Building

In order to compile the mandelbrot set, please follow the steps at the CE Toolchain documentation "Getting Started" section in order to set up your CE development environment. Then run make in the project root in order to compile the program. The program can then be found in bin/MBROT.8xp.

Developer notes

Note the program uses a custom fixed point integer implementation. This has been done in order to optimize performance. The program can be switched to using floats by changing

using T = fp<int24_t, 9>;

to

using T = float;

in src/mandelbrot.cpp. This results in a more detailed image at the cost of more than doubled rendering times. The 9 fraction bits for the fixed point numbers are chosen to reduce the amount of overflow errors (which are automatically detected when making the debug build). As it is, a total of only 4 overflow errors is produced (probably causing 4 pixels to have the wrong color).