Add a Python implementation of the 3D black hole visualizer

[anshjaiswal12]

Summary

• add a Python implementation of the same 3D black hole visualizer already present in the repository
• keep the original C++ implementation unchanged while offering a Python alternative for users who prefer Python
• add a self-contained python/ folder with the application, shader files, dependency list, and usage documentation
• link the new Python implementation from the main README

Why this change

This project is already a very interesting and popular black hole visualization, so I thought it would be useful to provide a Python version of the same idea as an additional option for contributors and users.

The goal of this PR is not to replace the existing C++ code. Instead, it adds a Python implementation of the same 3D visualizer for people who:

• prefer working in Python
• want an easier entry point for reading and experimenting with the project
• may want to prototype features more quickly before moving them into the C++ version

What the Python implementation includes

• a glfw window and OpenGL context
• a compute-shader based rendering path for the black hole visualization
• the grid overlay used to show spacetime curvature
• orbit camera controls and the existing gravity toggle behavior
• local documentation and dependency instructions inside python/README.md

Structure

The new code lives under python/ to keep the contribution isolated and easy to review:

• python/black_hole.py
• python/geodesic.comp
• python/grid.vert
• python/grid.frag
• python/requirements.txt
• python/README.md

Python requirements

Recommended Python version: 3.10+

Dependencies:

• glfw
• numpy
• PyOpenGL

Validation

• compiled the Python entry point successfully with python -m py_compile
• organized the contribution as a minimal addition to the repository instead of changing the current C++ build path
• documented installation and usage steps for the Python version

Future work

I also plan to continue improving the Python version and try adding more black hole-related features over time.

If this direction looks good, I would be happy to build on it in follow-up contributions as well.