This is my training project for C++23 and CMake. It draws fractals using the grid of complex numbers. There's a substantial boilerplate code in the project, it may seem as an overkill for such a simple task. However, I wanted to try out some of the C++ features and CMake.
Run in the main project folder
cmake .
make./fractals3Please check the config-*.json files in the config folder as examples.
Currently, the config.json file in the main folder is used for the configuration.
The grid is not much more than a 2D array of complex values. Each value is a complex number from the range set in the configuration file.
To set the grid range, use the grid section in the configuration file. The center specifies
the central value on the grid while the scale tells how much the value changes on the grid points.
By the fault, the grid will have the width and height equal to the ouput image resolution.
Example.
{
...,
"grid": {
"center": {
"re": 0.0,
"im": 0.0
},
"scale": 0.01
},
"output": {
...,
"resolution": {
"width": 800,
"height": 600
}
}
}Would draw the fractal in 800x600 resolution in the range from -400 * 0.01 to 400 * 0.01 horizontally
and from -i300 * 0.01 to i300 * 0.01 vertically.
There are two versions available: "julia" and "mandelbrot". The "julia" version is a bit more complex and allows to specify the "c" parameter of the function. The "mandelbrot" version is a bit simpler and does not require the "c" parameter.
To set the fractal type, use the fractal section in the configuration file. The type specifies
the fractal type. The c parameter is only used for the "julia" type.
The maxIterations specifies the maximum number of iterations to perform for each point on the grid.
To change the transformations generating the fractals check the AlgorithmFactory. Currently, both fractal types
use the standard z -> z * z + c function.
The output section in the configuration file specifies
the output file name and the resolution of the output image.
Currently only Bitmap output is supported.