andrevenancio’s gists

andrevenancio / gist:ffc366640f61f7512ab33290c76de569

Created August 21, 2021 09:52

tzprofiles

	I am attesting that this GitHub handle andrevenancio is linked to the Tezos account tz1eht4WAjkqU7kaupJd8qCDmec9HuKfGf68 for tzprofiles

	sig:edsigtcwSHrvNnWVxEM2TYPshEKgGetgix9JGYVeHkKsv39xwZtGRKtJvynRFkQbHaxCuSr15GiWkoBGWh6z4cPGVSx8ps7egiN

andrevenancio / box2d.min.js

Created April 15, 2021 13:35

box2d.min

	var Box2D={};
	(function(F,G){function K(){}if(!(Object.prototype.defineProperty instanceof Function)&&Object.prototype.__defineGetter__ instanceof Function&&Object.prototype.__defineSetter__ instanceof Function)Object.defineProperty=function(y,w,A){A.get instanceof Function&&y.__defineGetter__(w,A.get);A.set instanceof Function&&y.__defineSetter__(w,A.set)};F.inherit=function(y,w){K.prototype=w.prototype;y.prototype=new K;y.prototype.constructor=y};F.generateCallback=function(y,w){return function(){w.apply(y,arguments)}};
	F.NVector=function(y){if(y===G)y=0;for(var w=Array(y\|\|0),A=0;A<y;++A)w[A]=0;return w};F.is=function(y,w){if(y===null)return false;if(w instanceof Function&&y instanceof w)return true;if(y.constructor.__implements!=G&&y.constructor.__implements[w])return true;return false};F.parseUInt=function(y){return Math.abs(parseInt(y))}})(Box2D);var Vector=Array,Vector_a2j_Number=Box2D.NVector;if(typeof Box2D==="undefined")Box2D={};if(typeof Box2D.Collision==="undefined")Box2D.Collision={};
	if(typeof Bo

andrevenancio / index.html

Created May 17, 2018 17:13 — forked from stefnotch/index.html

gl-matrix Class and chaining (https://jsbench.github.io/#1aa0ac752bc15eca5b53ad313e1f610a) #jsbench #jsperf

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>gl-matrix Class and chaining </title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
	</head>
	<body>
	<h1>Open the console to view the results</h1>

andrevenancio / Conflicted Copies

Created January 29, 2018 11:32

	// list conflicted copies
	find ~/Dropbox/ -path "('s conflicted copy [0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]*" -print

	// remove conflicted copies
	find ~/Dropbox/ -path "('s conflicted copy [0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]*" -exec rm -f {} \;

andrevenancio / gist:c46ace1311ccd86d7a7ed3d5c0f10369

Created August 23, 2016 05:23

Remove all node_modules from Dropbox

find ~/Dropbox/ -name "node_modules" -type d -exec rm -rf '{}' +

andrevenancio / test.js

Created July 5, 2016 06:42

	var pos = tracker.getCurrentPosition();
	var angleRadians = Math.atan2(pos[25][1] - pos[23][1], pos[25][0] - pos[23][0]);

andrevenancio / update.js

Last active December 20, 2017 23:56

Simple example on how to drop some frame, optimising calculations, or renders every N frames on a RequestAnimationFrame update method. (ES6)

	let lastTime = Date.now();
	const N = 24;

	update() {
	requestAnimationFrame(update);

	// refresh only N times per second
	if (Date.now() - lastTime < 1000 / N) {
	return;
	}

andrevenancio / correlation.js

Last active July 5, 2016 02:36

Returns the correlation between two data sets with the same width and height. 0% completely different, 100% same image. (ES6)

	correlation(curData, oldData, minCorrelation) {
	const sampledDataWidth = 80;
	const sampledDataHeight = 60;
	let count = 0;
	const total = curData.data.length;
	for (let i = 0; i < total; i += 4) {
	// sampling the R channel, since the images are grayscaled and threshold samplying any of the channels will give the same results.
	if (curData.data[i] !== oldData.data[i]) {
	count++;
	}

andrevenancio / threshold.js

Created July 5, 2016 01:39

apply a threshold filter with a fixed constant. (ES6)

andrevenancio / grayscale.js

Last active July 5, 2016 01:15

apply a grayscale filter with a pre-build contrast brightness option. (ES6)

	grayscale(pixels, contrast, brightness) {
	const d = pixels.data;
	for (let i = 0; i < d.length; i += 4) {
	const r = d[i + 0];
	const g = d[i + 1];
	const b = d[i + 2];
	const a = d[i + 3];
	let v = 0.2126 * r + 0.7152 * g + 0.0722 * b;

	if (contrast && brightness) {

André Venâncio andrevenancio