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https://github.com/tristancacqueray/demo-code
Small computer code to render maths equations
https://github.com/tristancacqueray/demo-code
Last synced: 14 days ago
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Small computer code to render maths equations
- Host: GitHub
- URL: https://github.com/tristancacqueray/demo-code
- Owner: TristanCacqueray
- License: apache-2.0
- Created: 2016-05-29T02:10:44.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2020-05-19T12:12:20.000Z (over 4 years ago)
- Last Synced: 2024-10-11T01:41:23.574Z (27 days ago)
- Language: Python
- Homepage:
- Size: 1.83 MB
- Stars: 1
- Watchers: 4
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
This repository is a collection of code to create visualisation.
Check [demo-render](https://github.com/TristanCacqueray/demo-render) for the result.
# Setup
To run the code, you need to:
```bash
$ python3 -mvenv ~/demo-code-venv
$ . ~/demo-code-venv/bin/activate
(venv) $ pip3 install hy2glsl pyyaml scipy soundfile sounddevice image pyopengl pyopencl Cython scipy pygame numpy hy
# Glumpy needs to be install separately
(venv) $ pip3 install glumpy
# Ensure glfw-dev package is installed
(venv) $ pkg-config --libs glfw3
[Print -lglfw]
# Ensure tkinter binding is working
(venv) $ python3 -m "tkinter"
[Show a tk window]
```
Check audio input from alsa:
```bash
$ ./explorer_audio_mod.py --help
$ ./explorer_audio_mod.py --list-sound-devices
0 HDA Intel PCH: ALC285 Analog (hw:0,0), ALSA (2 in, 2 out)
1 Sennheiser USB headset: Audio (hw:1,0), ALSA (1 in, 2 out)
...
$ ./explorer_audio_mode.py --sound-device 1
[show spectrometer from audio mic]
```
Check audio output to alsa:
```bash
$ ./explorer_audio_mod.py --sound-device 1 --wav WAV_FILE_44100.wav
[play wav file and show spectrometer]
```
Check video encoding:
```bash
$ ./explorer_shader.py --max-frame 25 --record /tmp/demo-code-output/
[show window for a second and output files in /tmp]
$ mplayer /tmp/demo-code-output/render.mp4
[show recorded clip]
```
You have a working setup!
# Usage
Run the examples using this environment variable:
```bash
$ export PYTHONPATH=$(pwd)
```
## Simple
Use the `./examples/julia.hy` to try animation and exploration works.
Start the script using `./examples/julia.hy --pause --sound-device NR` using the sound device index of your audio hardware
This will display 3 windows:
* A big one with a dendrite like shape
* A smaller one with a mandelbrot map
* A controller with 2 sliders: `color_power` and `max_iter`
Instructions:
* Press `space` on the bigger window to un-pause the animation.
* The graphic window support `mouse-click` to re-center and `mouse-wheel` to zoom/dezoom.
* The map window support `middle-click` to update the seed of the rendering.
* The controller's sliders can adjust the rendering.
> Try to zoom to a blurry area and increase the `max_iter` to make the rendering sharp.
If you unpause, sending low-frequency in the microphone should make the dentrite move.
Ensure input is working by using the `explorer_audio_mod.py` script first.
## Orbit
The `./examples/orbit.hy` shows another formula.
## 3d
The `./examples/underwater-fractal-creature.py --pause` demonstrates a 3d formula.
Use a `--wav file` for better result. Otherwise, press `space`, use the mouse and try one of the slider!