Le canevas HTML5 permet d'obtenir des compétences de didacticiel effect_html5 dans la danse des flocons de neige en 3D

复制代码

代码如下 :

var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;

var conteneur;

var particule;

var caméra;
var scène;
var renderer;

var sourisX = 0;
var sourisY = 0;

var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;

var particules = [];
var particuleImage = new Image();//THREE.ImageUtils.loadTexture( "img/ParticleSmoke.png" );
particuleImage.src = 'images/ParticleSmoke.png';

function init() {

conteneur = 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();
scene.add(camera);

renderer = new THREE.CanvasRenderer();
renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
var materials = new THREE.ParticleBasicMaterial( { map: new THREE.Texture(particleImage) } );

for (var i = 0; i < 500; i ) {

particule = new Particle3D( matériau);
particule.position.x = Math.random() * 2000 - 1000;
particule.position.y = Math.random() * 2000 - 1000;
particule .position.z = Math.random() * 2000 - 1000;
particule.scale.x = particule.scale.y = 1;
scene.add( particule );

particules. pousser(particule);
}

conteneur.appendChild( renderer.domElement );

document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );

setInterval( boucle, 1000 / 60 );

}

function onDocumentMouseMove( événement ) {

mouseX = event.clientX - windowHalfX;
mouseY = event.clientY - windowHalfY;
}

function onDocumentTouchStart( événement ) {

si ( event.touches.length == 1 ) {

event.preventDefault();

mouseX = event.touches[ 0 ].pageX - windowHalfX;
mouseY = event.touches[ 0 ].pageY - windowHalfY;
}
}

function onDocumentTouchMove( événement ) {

si ( event.touches.length == 1 ) {

event.preventDefault();

mouseX = event.touches[ 0 ].pageX - windowHalfX;
mouseY = event.touches[ 0 ].pageY - windowHalfY;
}
}

//

fonction boucle() {

for(var i = 0; i {

var particule = particules[i];
particule.updatePhysics();

avec(particle.position)
{
if(y<-1000) y =2000;
si(x>1000) x-=2000;
sinon if(x<-1000) x =2000;
si(z>1000) z-=2000;
sinon if(z<-1000) z =2000;
}
}

camera.position.x = ( mouseX - camera.position.x ) * 0.05;
camera.position.y = ( - mouseY - camera.position.y ) * 0.05;
camera.lookAt(scene.position);

renderer.render( scène, caméra );

}