figgear

Involute spur gears generator and animation example written in Python. This library is for hobby use, and does not aim for correctness under ISO standard.

Prerequisites

• Numpy
• Pillow
• Scipy

for gear_anim.py demo app

• Pygame

for gear_3d.py demo app

• PyOpenGL
• GLFW
• PyGLM

Usage

git clone https://github.com/chromia/figgear
cd figgear
python gear_anim.py
python gear.py outputfile module tooth_number [options]
python gear.py -h  # for more details

To run an Animation app

python gear_anim.py

To run 3D demo app(requires a graphics card which supports OpenGL 3.3 or later)

python gear_3d.py

To generate m=8, z=20 (m is module number, z is the number of teeth).

python gear.py sample.png 8 20

To specify the color of gear, add options thus

python gear.py sample.png 8 20 -r=255 -g=0 -b=255 -a=255  # RGBA=(255,0,0,255)

By default, outputted gear is quite rough. To improve quality add option "--ssaa" (antialias).

python gear.py sample.png 8 20 -r=255 -g=0 -b=255 -a=255 --ssaa=4