https://github.com/garfield1002/mandelbrot_explorer

A Mandelbrot fractal viewer, built using OpenGL shaders
https://github.com/garfield1002/mandelbrot_explorer

cpp glsl mandelbrot opengl shader

Last synced: about 1 month ago
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A Mandelbrot fractal viewer, built using OpenGL shaders

• Host: GitHub
• URL: https://github.com/garfield1002/mandelbrot_explorer
• Owner: Garfield1002
• License: unlicense
• Created: 2021-08-19T22:04:14.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2022-02-09T07:59:26.000Z (almost 3 years ago)
• Last Synced: 2023-03-08T19:16:32.059Z (almost 2 years ago)
• Topics: cpp, glsl, mandelbrot, opengl, shader
• Language: C++
• Homepage:
• Size: 5.92 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Mandelbrot Fractal Viewer with OpenGL Shaders

A C++ implementation of a Mandelbrot explorer built using OpenGL Shaders.

 

## 🖼 Example results

![Screenshot_0](https://raw.githubusercontent.com/Garfield1002/Fractal/master/res/screenshot_0.png)

![Screenshot_1](https://raw.githubusercontent.com/Garfield1002/Fractal/master/res/screenshot_1.png)

![Screenshot_2](https://raw.githubusercontent.com/Garfield1002/Fractal/master/res/screenshot_2.png)

## 🎮 Controls

| Key | Action |

| :-: | :----:             |

| `⬆` | Move the camera up |

| `➡` | Move the camera right |

| `⬇` | Move the camera down |

| `⬅` | Move the camera left |

| `W` | Zoom in |

| `S` | Zoom out |

| `ESC` | Exit the application |

## 💡 What I learned

### C++

This was one of my first C++ and OpenGL projects, so quite a lot.

### CMake

Their was an attempt at using CMake, maybe in a future project.

### Mandelbrot

I had to read through a couple wikipedia articles to learn about implementing the mandelbrot fractal.

I used their _"smoothing function"_: 

```glsl

float log_zn = log(Z.x*Z.x + Z.y*Z.y) / 2.0;

float nu = log(log_zn / log(2.0)) / log(2.0);

iteration += 1.0 - nu;

color = vec4(mix(colormap[int(floor(iteration)) % 17], colormap[(int(floor(iteration)) + 1) % 17], fract(iteration)), 1.0);

```