Colin Gourlay colingourlay

gif-from-tweet

There are so many great GIFs out there and I want to have copies of them. Twitter makes that harder than it should be by converting them to MP4 and not providing access to the source material. To make it easier, I made a bash pipeline that takes a tweet URL and a filename, extracts the MP4 from that tweet and uses ffmpeg to convert back to GIF.

Dependencies

ffmpeg
- macOS: brew install ffmpeg
- Ubuntu/Debian: apt install ffmpeg

Another attempt at stippling with a more basic relaxation approach but using multiple dot sizes to add texture.

Position starting points with rejection sampling, using the grayscale image as the density function.
Use Lloyd's algorithm to get a relaxed Voronoi diagram from the starting points.
Size the dots based on the darkness of the pixel at their position, then shrink them as much as necessary to avoid collisions - this could be done all at once but it seems to produce some splotchy artifacts, so instead they're shrunk a little bit at a time.

The heavy computation is done in a web worker to avoid locking up the page, and takes about 15-20 seconds to complete.

See also: Voronoi relaxation, Stippling, Philippe Rivière's CCPD Snowden

Bitcoin for laypeople

(Chinese version available here, courtesy of @jiangplus

(This is an English translation of my Danish blog post, Bitcoin for voksne)

Bitcoin is a digital currency that has no central authority. It's a currency where you do not have to rely on anyone to know it's worth it. As a concept, it's similar to gold. Gold has a value in itself, as opposed to, say a $100 note that only has value if the U.S. government says it has value. Similarly, the idea of Bitcoins is that they have value by themselves.

Let's try to understand how Bitcoin works.

Basic macaron shell recipe

This will make approximately 100 shells, or about 4 dozen cookies
When practicing, I generally half this recipe to only make 1 sheet of cookies
When making macarons, you will generally flavor the filling but not the shells
You want to make the macarons the day before the event. You will store them in the refrigerator over night, and then take them out a few hours before to come to room temperature. This is because macarons are best when "ripened", or allowed to sit for at least one night and have the filling seep into the shells a bit. Otherwise, straight out of the oven, they can be too crunchy or hard
Macarons shells freeze well! Filled macarons can also freeze well depending on the filling. Buttercream fillings freeze great. Put the cookies into an airtight container before freezing
Everyones baking temperature and baking time vary depending on their oven - you might have to experiment a bit!
_I always separate egg whites myself by cracking the egg, p

	using System;
	using System.Collections.Generic;
	using System.IO;
	using System.IO.Compression;
	using System.Text;

	// File Format:
	// https://github.com/aseprite/aseprite/blob/master/docs/ase-file-specs.md

	// Note: I didn't test with with Indexed or Grayscale colors

	(function (window) {

	if ((/Macintosh/gi).test(navigator.userAgent) && (/Chrome\|Safari\|Firefox/gi).test(navigator.userAgent)) {

	history.pushState(null, null, location.href);
	window.onpopstate = function(event) {
	history.go(1);
	};
	}

	This builds off the excellent work of @lmarkus & @dogeared.

	The scripts below can be used in conjunction with the Slack Emoji Tools Google Chrome extension to export emojis from
	one Slack team and import into another team.

	Original work here:
	* https://gist.github.com/lmarkus/8722f56baf8c47045621
	* https://gist.github.com/dogeared/f8af0c03d96f75c8215731a29faf172c

	// UPDATE: In 2023, you should probably stop using this! The narrow version of Safari that
	// does not support `nomodule` is probably not being used anywhere. The code below is left
	// for posterity.

	/**
	* Safari 10.1 supports modules, but does not support the `nomodule` attribute - it will
	* load <script nomodule> anyway. This snippet solve this problem, but only for script
	* tags that load external code, e.g.: <script nomodule src="nomodule.js"></script>
	*
	* Again: this will not prevent inline script, e.g.:

	#!/usr/bin/env bash



	# http://stackoverflow.com/a/32537953/1766716

	# ffmpeg -i http://.../playlist.m3u8 -c copy -bsf:a aac_adtstoasc output.mp4

	url=$1
	filenameext=$(basename "$url")

	to check if the server works - https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice

	stun:
	stun.l.google.com:19302,
	stun1.l.google.com:19302,
	stun2.l.google.com:19302,
	stun3.l.google.com:19302,
	stun4.l.google.com:19302,
	stun.ekiga.net,
	stun.ideasip.com,