The Fractal Drawer draws the Mandelbrot-Set on BMP Images.
The Mandelbrot set is the set of complex numbers c for which the function f(c)=z^2+c does not diverge. On the pictures, that's the black region inside the shape. It's at the margins of that shape where it gets interesting: The colors indicate how fast the function goes to infinity given each pixel, representing a point in the complex plane, as input.
Code structure:
- main.cpp: main program connecting the classes
- fractal.cpp: old version before split up into classes
- FractalCreator.h: does the actual drawing
- RGB.h: Color handling
- Zoom.h: defining a zoom
- ZoomList.h: stores multiple Zooms in a vector
- Mandelbrot.h: contains the Math behind the fractal
- Bitmap.h: Initialize the BMP file
- BitmapFileHeader: first data in Bitmap
- BitmapInfoHeader: second data in Bitmap
Created April 2017
This program uses the Simple DirectMedia Layer (SDL) to create a window where a swarm of particles performs an explosion-like motion with color-change.
Detailed instructions on how to create such a simulation can be found in this free udemy-course. For the setup of SDL, see this tutorial. On my mac, I used Homebrew via brew install sdl2 and compiled with g++ including the SDL-files with g++ explosion.cpp -o explosion -I/usr/local/Cellar/sdl2/2.0.5/include/SDL2 -D_THREAD_SAFE -L/usr/local/lib -lSDL2).
Code structure:
- explosion.cpp: main program connects swarm and screen
- Screen.h: sdl setup, window management, event handling, blur algorithm
- Particle.h: particle class initializing and updating position and speed
- Swarm.h: creates and handles swarm as array of particles
Created April 2017
This project was part of the C++ lecture ipi and is a simple implementation of Conway's Game of Life using the image format PGM (Portable Graymap).
Given an initial configuration of pixels, which correspond to "living cells", the algorithm determines which pixels will be lit in the next iteration. The program outputs a series of pgm-images which can be converted into an animated film using ffmpeg or ImageMagick with the command convert -delay 6 conway_sim_*.pgm simulation.mpg.
The rules are:
- cell with fewer than two live neighbours dies of isolation
- cell with two or three live neighbours lives on
- cell with more than three neighbours dies of overpopulation
- a dead cell with exactly three live neighbours becomes a live cell
Created March 2017