This is a program used to render fractals using a RON parameter file. It also has a very simple gui for an easier navigation.

• Fractal Renderer
• How to install
• How to use
• Preset renders
• Ideas
• Notes

If you have cargo installed:

cargo install fractal_rndr

Otherwise, you can download the latest executable from the releases tab.

Start the app using:

fractal_rndr path/to/param_file.ron path/to/output_image.png --gui

This is what the app looks like:

If there is no parameter file, the app will start with a preset fractal. You can save the parameter file anytime by clicking the corresponding button.

Enjoy !

These are preset renders I like, you can access their parameter files by clicking on the title. There are some more in presets/.

The renders found in presets/ are licensed under CC BY 4.0

Fractal: ThirdDegreeRecWithGrowingExponent

Fractal: Mandelbrot

Fractal: ThirdDegreeRecWithGrowingExponent

Fractal: SecondDegreeRecWithGrowingExponent

Fractal: SecondDegreeRecWithGrowingExponent

Fractal: SecondDegreeRecWithGrowingExponentParam

Fractal: SecondDegreeRecWithGrowingExponent

Fractal: Iigdzh

Fractal: ThirdDegreeRecWithGrowingExponent

Fractal: Mjygzr

Fractal: Vshqwj

Fractal: Iigdzh

Fractal: SecondDegreeThirtySevenBlend

Fractal: Wmriho(a_re: -0.1, a_im: 0)

Fractal: ComplexLogisticMapLike

Fractal: SecondDegreeRecAlternating1WithGrowingExponent

Fractal: SecondDegreeRecWithGrowingExponent

• use wgpu to perform calculations ? see this and especially this
• use opencl to perform calculations ? see this
• Make a new program using this one that is a purely gui program with progressive rendering
  • Progressive rendering ? Save a global raw_image and sample continuously from another thread to improve image quality
    • How to sample ? Use Low or Medium for first pass then do other passes with High (as the number of passes increases, the value of each pixel gets more and more accurate)
    • Careful: The average between new passes and the current values must be weighted: (sampling_point_count_from_start * stored_value + sampling_point_count_for_current_pass * new_value) / (sampling_point_count_from_start + sampling_point_count_for_current_pass)

• To create a video from the frames:

  ffmpeg -framerate <fps> -pattern_type glob -i 'frames/*.png' -c:v libx264 -pix_fmt yuv420p video.mp4