As part of a 1.5-year long Computer Graphics course that I took here, I had to create a solo demo in C using OpenGL 1.0 (Yes! Immediate Mode OpenGL!) and a data structure of my choice before moving ahead with the more advanced Core Profile OpenGL.

In the sketches I created, I needed to render a tree which could grow and interact with the wind. I found from Wikipedia that the scientific way to generate trees in CG is through the use of Lindenmayer Systems, or L-Systems for short.

After reading first few chapters of Lindenmayer's own book, "The Algorithmic Beauty of Plants", I decided to implement a simple L-System API for use in my project.

Although I later decided not to use the grow/shrink feature in my project, these short programs demonstrate that the API is indeed capable of allowing this to happen.

This repository contains the source code for a 'cool' experiment I wrote while working on the API and my project.

This may quite possibly be the "wrong way" of writing C APIs!

Heck! Instead, I am learning what is right and what is not! What you see here is purely experimental code, and I have taken no efforts to optimize anything. My only motive at the time was to write something that runs and is logical enough for me to use.

Also, at least for now, the API supports only Deterministic Context-Free (D0L) L-Systems.

a. Any Windows NT (3.1 and above) Operating System.
b. You must have Visual Studio Command Line Utilities installed.

1. Open an instance of the x64 Native Tools Command Prompt.

2. Navigate to the d0l-fractal-trees folder using cd.

3. Run the .bat file corresponding to the app you want to build, for example, run Build2DTree.bat to build 2DTree.exe.

4. You will find the generated executable file at d0l-fractal-trees/bin.

Running 2DTree.exe

Running 3DTree.exe