William Manco williammanco

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;

Node.js Best Practice Exception Handling

Code examples from this stack overflow answer.

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.

	// 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;

	vec4 applyMatrix4( vec4 p, mat4 m) {
	return m * p;
	}
	vec3 applyMatrix4(vec3 p, mat4 m) {
	return vec3( m * vec4(p, 1.0) );
	}
	vec3 applyMatrix3(vec3 p, mat3 m) {
	return m * p;
	}


	vec2 pixel = vec2(1.0) / 16.;

	// il nostro puntatore, data una coordinata viene tradotta in una posizione della texture
	vec2 pixelPosition(float p) {
	float groupInRow = 4.;
	return vec2(
	((mod(p, groupInRow) * 4.0)) * pixel.x, // column
	(floor(p * 0.25)) * pixel.y // row
	);

	//https://observablehq.com/@k9/calculating-normals-for-distorted-vertices

	varying vec3 vNormal;
	uniform float offset;

	float tangentFactor = 0.1;

	${perlin()}

	// http://lolengine.net/blog/2013/09/21/picking-orthogonal-vector-combing-coconuts

	# https://blender.stackexchange.com/q/57306/3710
	# https://blender.stackexchange.com/q/79779/3710

	bl_info = {
	"name": "Add-on Template",
	"description": "",
	"author": "",
	"version": (0, 0, 1),
	"blender": (2, 70, 0),
	"location": "3D View > Tools",

	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