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@hellpanderrr
hellpanderrr / Python concave hull ( alpha shape ) .md
Last active April 27, 2022 22:51
Concave hull in python using scipy and networkx
from scipy.spatial import Delaunay, ConvexHull
import networkx as nx
 
points = [ [0,0],[0,50],[50,50],[50,0],[0,400],[0,450],[50,400],[50,450],[700,300],[700,350],[750,300],[750,350],
          [900,600],[950,650],[950,600],[900,650]
]
def concave(points,alpha_x=150,alpha_y=250):
    points = [(i[0],i[1]) if type(i) <> tuple else i for i in points]
    de = Delaunay(points)
@sfan5
sfan5 / Makefile
Last active February 9, 2020 02:14
A small python wrapper for xbrz
#You may have to tweak some things here
CC = gcc
CXX = g++
FLAGS = -I/usr/include/python2.7
CFLAGS =
CXXFLAGS =
LDFLAGS =
#Do not change anything beyond this point
CXXFLAGS += -std=c++11
@panzi
panzi / portable_endian.h
Last active August 9, 2024 13:12
This provides the endian conversion functions form endian.h on Windows, Linux, *BSD, Mac OS X, and QNX. You still need to use -std=gnu99 instead of -std=c99 for gcc. The functions might actually be macros. Functions: htobe16, htole16, be16toh, le16toh, htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh. License: I hereby put …
// "License": Public Domain
// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like.
// In case there are jurisdictions that don't support putting things in the public domain you can also consider it to
// be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it
// an example on how to get the endian conversion functions on different platforms.
#ifndef PORTABLE_ENDIAN_H__
#define PORTABLE_ENDIAN_H__
#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
# Filename : Image2Map.py
# Authors : Georg Muntingh and Bjorn Lindeijer
# Version : 1.2
# Date : June 16, 2010
# Copyright : Public Domain
import os, sys, Image, networkx
class TileMap:
""" This class represents a map of tiles.
@sebpiq
sebpiq / gist:4128537
Last active April 22, 2024 15:20
Python implementation of the Goertzel algorithm for calculating DFT terms
# Copyright © 2020 Sébastien Piquemal sebpiq@protonmail.com
# This work is free. You can redistribute it and/or modify it under the
# terms of the Do What The Fuck You Want To Public License, Version 2,
# as published by Sam Hocevar. See the license text below for more details.
#
# --------------------------------------------------------------------
#
# DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
# Version 2, December 2004
#