demosys-py 0.3.6

Modern OpenGL 4.1+ Prototype Framework inspired by Django

demosys-py

A python 3 implementation of a C++ project used to create and prototype demos (see demoscene) in OpenGL. The design of this version is heavily inspired by the Django project.

We only support OpenGL 3.3+ forward compatible core profiles (no backwards compatibility).

This was originally made for for non-interactive real time graphics combined with music (“real time music videos”). It’s made for people who enjoy playing around with modern OpenGL without having to spend lots of time creating all the tooling to get things up and running.

If you are not a fan of using a framework, you can create your own context and just use the classes in demosys.opengl. These will give you fairly straight forward ways to use VAOs, Shaders, Textures and FBOs.

Documentation

Project documentation can be found at readthedocs. Optionally you can build your own docs from the docs directory.

Contributing

Any contribution to the project is welcome. Never hesitate to ask questions or submit pull requests (completed or work in progress). The worst thing that can happen is that we or you might learn something. This is supposed to be a fun project.

Also check out the TODO list. Take a stab on what of the features or documentation or suggest new entries.

Known Issues

The sound player an be a bit wonky at times on startup refusing to play on some platforms. We have tried a few libraries and ended up using pygame’s mixer module.

Audio Requirements: - As the current position in the music is what all draw timers are connected to, we need a library that can deliver this. - Efficient and accurate seeking + pause support - Some way to extract simple data from the music for visualisation

Libraries

GLFW binaries must also be installed. Get from your favourite location. Use version 3.2.1 or later.

• http://pyopengl.sourceforge.net

• pyGLFW for window and context creation + input

• PIL/Pillow for texture loading

• https://github.com/adamlwgriffiths/Pyrr for math (uses numpy)

Optional for audio: - https://www.pygame.org using the mixer module for music

What inspired us to make this project?

• We are old farts from the demoscene

• We love Python

• We were wondering what would be done with OpenGL in Python

• We work a lot with Django and love it

Why not combine ideas from our own demosys written in C++ and Django making a Python 3 version?

Credits

• Also thanks to Attila Toth for an excellent tutorial on OpenGL in Python.