Skip to content

Instantly share code, notes, and snippets.

View akiross's full-sized avatar
🥷
Ninja

Alessandro Re akiross

🥷
Ninja
View GitHub Profile
@rossant
rossant / raytracing.py
Last active July 29, 2026 03:07
Very simple ray tracing engine in (almost) pure Python. Depends on NumPy and Matplotlib. Diffuse and specular lighting, simple shadows, reflections, no refraction. Purely sequential algorithm, slow execution.
"""
MIT License
Copyright (c) 2017 Cyrille Rossant
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
anonymous
anonymous / rec.sh
Created October 21, 2012 14:06
record using ffmpeg
#!/bin/sh
INFO=$(xwininfo -frame)
WIN_GEO=$(echo $INFO | grep -oEe 'geometry [0-9]+x[0-9]+' |\
grep -oEe '[0-9]+x[0-9]+')
WIN_XY=$(echo $INFO | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' |\
grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/+/,/' )
ffmpeg -f x11grab -y -r 15 -s $WIN_GEO -i :0.0+$WIN_XY -vcodec ffv1 -sameq -f alsa -ac 2\
@tautologico
tautologico / drivertest.cpp
Created June 6, 2012 02:58
Vector addition example using CUDA driver API
/*
* drivertest.cpp
* Vector addition (host code)
*
* Andrei de A. Formiga, 2012-06-04
*/
#include <stdio.h>
#include <stdlib.h>
@brantfaircloth
brantfaircloth / cool_argparse_stuff.py
Created December 7, 2011 16:47
Some cool argparse stuff
class FullPaths(argparse.Action):
"""Expand user- and relative-paths"""
def __call__(self, parser, namespace, values, option_string=None):
setattr(namespace, self.dest, os.path.abspath(os.path.expanduser(values)))
def is_dir(dirname):
"""Checks if a path is an actual directory"""
if not os.path.isdir(dirname):
msg = "{0} is not a directory".format(dirname)
raise argparse.ArgumentTypeError(msg)