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POSnowfall Canvas, Change Particle Speed
 

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    <p>I'm trying to change the particle speed of this snowfall script but I can't seem to find the numbers that represent "Falling Speed". Right now the particles are falling too fast, here's the bulk of the script:</p> <pre><code>var SCREEN_WIDTH = window.innerWidth; var SCREEN_HEIGHT = window.innerHeight; var container; var particle; var camera; var scene; var renderer; var mouseX = 0; var mouseY = 0; var windowHalfX = window.innerWidth / 2; var windowHalfY = window.innerHeight / 2; var particles = []; var imgArr = new Array(); function init() { container = document.createElement('div'); document.body.appendChild(container); camera = new THREE.PerspectiveCamera( 75, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 ); camera.position.z = 1000; scene = new THREE.Scene(); renderer = new THREE.CanvasRenderer(); renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT); for (var i = 0; i &lt; 1000; i++) { var particleImage = new Image(); particleImage.src = imgArr[Math.round(Math.random()*(imgArr.length-1))]; var material = new THREE.ParticleBasicMaterial( { map: new THREE.Texture(particleImage) } ); particle = new Particle3D( material); particle.position.x = Math.random() * 2000 - 1000; particle.position.y = Math.random() * 2000 - 1000; particle.position.z = Math.random() * 2000 - 1000; particle.scale.x = particle.scale.y = 0.8; scene.add( particle ); particles.push(particle); } container.appendChild( renderer.domElement ); setInterval( loop, 1000 / 60 ); } function loop() { for(var i = 0; i&lt;particles.length; i++) { var particle = particles[i]; particle.updatePhysics(); with(particle.position) { if(y&lt;-1000) y+=2000; if(x&gt;1000) x-=2000; else if(x&lt;-1000) x+=2000; if(z&gt;1000) z-=2000; else if(z&lt;-1000) z+=2000; } } renderer.render( scene, camera ); } </code></pre> <p>It's using Three.js as a backbone. Here's the original script to see it in action:</p> <p><a href="http://seb.ly/demos/JSSnow/snow3d.html" rel="nofollow">http://seb.ly/demos/JSSnow/snow3d.html</a></p>
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    1. USHowdy_McGee
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      1. VTUpMod
    1. COIn the `Particle3D` constructor in `Snow.js`, the particle initial velocity is set by `this.velocity = new THREE.Vector3( 0, -8, 0 );` You can change the -8 to -4 to decrease the particle speed.
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      1. USWestLangley
 

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