Skip to content

Instantly share code, notes, and snippets.

View u840903's full-sized avatar
💭
(╯°□°）╯︵ ┻━┻

Jan K. Griffioen-Järfalk u840903

💭
(╯°□°）╯︵ ┻━┻
23 followers · 2 following
View GitHub Profile
@u840903
u840903 / git-submodules.md
Last active April 22, 2022 14:40
Github Submodule Cheat Sheet

Add a submodule

git submodule add https://github.com/janjarfalk/canvasrunner.git components/canvasrunner/

Update all submodules

git submodule foreach git pull origin master
cd ..
git commit . -m "Updated submodules"
@u840903
u840903 / svg-with-png-fallback
Last active August 29, 2015 14:03
SVG Feature Detection and PNG fallback
// http://toddmotto.com/mastering-svg-use-for-a-retina-web-fallbacks-with-png-script/
function supportsSVG() {
return !! document.createElementNS && !! document.createElementNS('http://www.w3.org/2000/svg','svg').createSVGRect;
}
if (!supportsSVG()) {
var imgs = document.getElementsByTagName('img');
var dotSVG = /.*\.svg$/;
for (var i = 0; i != imgs.length; ++i) {
if(imgs[i].src.match(dotSVG)) {
@u840903
u840903 / commands.md
Last active August 29, 2015 14:05
Terminal Commands

Create a symbolic link.

ln -s ~/source ~/destination

Change GIT default editor to Sublime.

ln -s "/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl" /usr/local/bin/subl
git config --global core.editor "subl -n -w"
@u840903
u840903 / iframe.html
Created November 7, 2016 12:56
<html>
<head></head>
<body style='height: 600px; background-color: #fafafa;'>
<div>IFRAME</div>
<script>
var setHeight = function() {
parent.postMessage({iframeHeight: document.documentElement.clientHeight}, '*');
};
window.onresize = function() {
setHeight();
@u840903
u840903 / randomSpherePoint.js
Created January 14, 2017 12:04
/*
Returns a random point of a sphere, evenly distributed over the sphere.
The sphere is centered at (x0,y0,z0) with the passed in radius.
The returned point is returned as a three element array [x,y,z].
*/
function randomSpherePoint(x0,y0,z0,radius){
var u = Math.random();
var v = Math.random();
var theta = 2 * Math.PI * u;
var phi = Math.acos(2 * v - 1);
@u840903
u840903 / exportCanvasAsPNG.js
Created April 4, 2017 17:46
const exportCanvasAsPNG = (canvasElement, fileName) => {
var MIME_TYPE = "image/png";
var imgURL = canvasElement.toDataURL(MIME_TYPE);
var dlLink = document.createElement('a');
dlLink.download = fileName;
dlLink.href = imgURL;
dlLink.dataset.downloadurl = [MIME_TYPE, dlLink.download, dlLink.href].join(':');
@u840903
u840903 / janjarfalk_signature.nc
Created November 12, 2017 17:27
G21
G0 X-2 Y0
M3
G1 X-1 Y0
G1 X-1 Y1
G1 X0 Y0
G1 X0 Y1
G1 X1 Y0
G1 X2 Y0
M5
@u840903
u840903 / NormSInv.js
Created January 2, 2018 23:45
function NormSInv(p) {
var a1 = -39.6968302866538, a2 = 220.946098424521, a3 = -275.928510446969;
var a4 = 138.357751867269, a5 = -30.6647980661472, a6 = 2.50662827745924;
var b1 = -54.4760987982241, b2 = 161.585836858041, b3 = -155.698979859887;
var b4 = 66.8013118877197, b5 = -13.2806815528857, c1 = -7.78489400243029E-03;
var c2 = -0.322396458041136, c3 = -2.40075827716184, c4 = -2.54973253934373;
var c5 = 4.37466414146497, c6 = 2.93816398269878, d1 = 7.78469570904146E-03;
var d2 = 0.32246712907004, d3 = 2.445134137143, d4 = 3.75440866190742;
var p_low = 0.02425, p_high = 1 - p_low;
var q, r;
@u840903
u840903 / ep_9_loop.ml
Created January 16, 2018 22:12
let triple = (target) =>
for (a in 1 to target / 3) {
for (b in a + 1 to target / 2) {
let c = target - a - b;
if (a * a + b * b === c * c) {
Js.log(a * b * c)
}
}
};
@u840903
u840903 / pythagorean-triplet.ml
Last active January 26, 2018 13:55
let triplet target =
let rec next a b =
let c = target - a - b in
match (a * a + b * b == c * c) with
| true -> a * b * c
| false when b < target / 2 -> next a (b + 1)
| false when a < target / 3 -> next (a + 1) (a + 2)
| _ -> 0 in
next 1 2