William Manco williammanco

Implementing audio and video autoplay unlocking

Due to recent changes in the autoplay policy of Chrome 66 developers of interactive experiences on the web are facing new challenges regarding audio and video autoplay. The new policy has unfortunately broken many of the older experiences that rely on autoplaying audio and video.

So how to move forward?

Previous solutions

Previously developers used to face this issue on iOS mobile devices where the audio context was locked. Most developers fixed this by using the initial touch event of a user to unlock the audio.

Trigonometry

const float PI = 3.1415926535897932384626433832795;
const float PI_2 = 1.57079632679489661923;
const float PI_4 = 0.785398163397448309616;

float PHI = (1.0+sqrtf(5.0))/2.0;

Muoversi da jQuery a javascript

Usare Javascript invece che jQuery nei tuoi progetti può essere una mossa molto intelligente, non solo imparerai più a fondo le dinamiche del linguaggio e diventarai naturalmente più esperto, ma incrementerai notevolmente le performance del tuo sito.

_{Se lavori in grossi progetti e applicazioni che richiedono tante linee di codice lavorare in puro Javascript è un po frustrante, in questo caso un mix di JQuery e Javascript è necessario.}

Tabella dei contenuti

[Eventi] (#eventi)
[Selettori] (#selettori)
[Modifica Attributi] (#modifica)

Node.js Best Practice Exception Handling

Code examples from this stack overflow answer.

	vec2 rotateUV(vec2 uv, float rotation)
	{
	float mid = 0.5;
	return vec2(
	cos(rotation) * (uv.x - mid) + sin(rotation) * (uv.y - mid) + mid,
	cos(rotation) * (uv.y - mid) - sin(rotation) * (uv.x - mid) + mid
	);
	}

	vec2 rotateUV(vec2 uv, float rotation, vec2 mid)

	const glslify = require('glslify');
	const path = require('path');
	const assign = require('object-assign');
	const defined = require('defined');

	// This is the original source, we will copy + paste it for our own GLSL
	// const vertexShader = THREE.ShaderChunk.meshphysical_vert;
	// const fragmentShader = THREE.ShaderChunk.meshphysical_frag;

	// Our custom shaders

	const glslify = require('glslify');
	const path = require('path');

	// This is the original source, we will copy + paste it for our own GLSL
	// const vertexShader = THREE.ShaderChunk.meshphysical_vert;
	// const fragmentShader = THREE.ShaderChunk.meshphysical_frag;

	// Our custom shaders
	const fragmentShader = glslify(path.resolve(__dirname, 'standard.frag'));
	const vertexShader = glslify(path.resolve(__dirname, 'standard.vert'));

	f@angle = chf("angle") * 2 * $PI; // angle is a float slider with range from 0 - 1
	v@axis = chv("axis") + point(1, "N", 0); // axis is a 3 float vector {0.0, 0.0, 0.0}

	3@imatrix = ident();
	rotate(@imatrix, @angle, @axis);

	@P = (@P - point(1, "P", 0)) * @imatrix + point(1, "P", 0);

	// HELPER FUNCTIONS
	const has = (entity, components) => {
	const exists = (x) => typeof x !== "undefined";
	return components.map((component) => exists(entity[component]))
	.reduce((x,y) => x && y);
	};

	const clone = (object) => {
	if (object === null \|\| typeof object !== 'object'){
	return object;

	# Apache configuration file
	# httpd.apache.org/docs/2.2/mod/quickreference.html
	# Note .htaccess files are an overhead, this logic should be in your Apache
	# config if possible: httpd.apache.org/docs/2.2/howto/htaccess.html
	# Techniques in here adapted from all over, including:
	# Kroc Camen: camendesign.com/.htaccess
	# perishablepress.com/press/2006/01/10/stupid-htaccess-tricks/
	# Sample .htaccess file of CMS MODx: modxcms.com
	# This is the free sample of .htaccess from 6GO s.r.l.
	# @author Claudio Ludovico Panetta (@Ludo237)