Michael Kuenzli pfirpfel

pfirpfel / index.html

Last active April 20, 2021 12:42

Wavy knot

	<html>
	<head>
	<title>Wavy Clip Mask</title>
	</head>
	<body>
	<input id="karma" type="range" min="0" max="100" value="50" style="width: 500px;"/>
	<br>
	<canvas id="canvas"></canvas>
	<script src="knot.js" type="text/javascript"></script>
	<script src="wave.js" type="text/javascript"></script>

pfirpfel / mergeLineStrings.js

Last active June 23, 2017 13:01

mergeLineStrings

	/**
	* @param arr Array of LineStrings, see: https://tools.ietf.org/html/rfc7946#appendix-A.2
	* @returns LineString
	*/
	function mergeLineStrings(arr){
	return {
	type: 'LineString',
	coordinates: arr.map(ls => ls.coordinates).reduce((acc, cur) => acc.concat(cur.slice(1)))
	};
	}

pfirpfel / gifenc.sh

Last active November 21, 2017 11:02

Generate gif from video using ffmpeg

	#!/bin/sh

	#usage: ./gifenc.sh source.mkv target.gif

	palette="/tmp/palette.png"

	filters="fps=10,scale=800:-1:flags=lanczos"

	ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
	ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y $2

pfirpfel / wordiness.js

Last active February 7, 2021 18:36

MTG Wordiness

	const allPrintings = require('./allPrintings') // download from https://mtgjson.com/downloads/all-files/#AllPrintings
	// takes a while to load

	const sets = Object.entries(allPrintings.data)
	const setsToCheck = sets.filter(set => ['core', 'masters', 'expansion'].includes(set[1].type))

	let wordiness = setsToCheck.map(set => {
	let setSize = set[1].baseSetSize
	let cards = set[1].cards.filter(card => Number.parseInt(card.number) <= setSize)
	let words = cards.filter(c => typeof c.text !== 'undefined').reduce((acc, curr) => { return acc + curr.text.split(/\s/).length }, 0)

pfirpfel / product120sequence.py

Created April 19, 2021 14:16

	"""
	Goal is to fill the empty spots in the initial tuple with positive integers
	in a way that always four consecutive number have a product of 120.
	"""

	import numpy
	initial = (None, None, 2, None, None, 4, None, None, None, None, None, 3, None, None) # tuple is immutable
	possible_factors = [2, 3, 4, 5, 6, 10, 15] # all possible factors of 120 if there are 4 factors