Saya mencoba membuat animasi webgl untuk latar belakang situs web saya, terinspirasi oleh "threejs - Contoh Cloud" (http://mrdoob.com/lab/javascript/webgl/clouds/). Di komputer saya sepertinya cukup baik... Tapi untuk beberapa PC sangat lambat.
Apakah ada cara untuk lebih mengoptimalkan kode saya, dan mendeteksi jika kartu grafis tidak mendukung webgl?
Animasi saya (di latar belakang): http://wabeo.fr/?theme=auriga-7
Kode saya:
var container = document.getElementById('container');
var wi = window.innerWidth;
var he = window.innerHeight;
var renderer = new THREE.WebGLRenderer({
antialias: true
});
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75,wi/he,1,10000);
var distance = 500;
var geometry2 = new THREE.Geometry();
renderer.setSize(wi ,he);
container.appendChild(renderer.domElement);
scene.add(camera);
var texture = THREE.ImageUtils.loadTexture( '/wp-content/themes/auriga-7/i/cloud.png' );
texture.minFilter = THREE.LinearFilter;
texture.magFilter = THREE.LinearFilter;
var m = new THREE.MeshBasicMaterial( {color:0x000000} );
var material = new THREE.MeshBasicMaterial( { map: texture,transparent: true} );
var plane = new THREE.PlaneGeometry( 400,400,4,4 );
for ( ix = 0; ix <45; ix++ ) {
item = new THREE.Mesh( plane, m );
item.position.x = ((Math.random()-0.5)*(Math.random() * wi/2) /4)*Math.random()*10;
item.position.y = ((Math.random()-0.5)*(Math.random() * he/2) /4)*Math.random()*10;
item.position.z = ix*10-50;
item.rotation.z = Math.random() *250;
item.scale.x = item.scale.y = Math.random() * Math.random() * 2 + 0.5;
THREE.GeometryUtils.merge(geometry2,item);
}
mesh = new THREE.Mesh( geometry2, material );
scene.add(mesh);
camera.position.z = distance;
camera.lookAt(scene.position);
renderer.sortObjects = false;
// create a point light
var pointLight =
new THREE.PointLight(0xFFFFFF);
// set its position
pointLight.position.x = 10;
pointLight.position.y = 50;
pointLight.position.z = 130;
// add to the scene
scene.add(pointLight);
requestAnimationFrame(wanarender);
document.addEventListener('mousemove',onMouseMove, false);
window.addEventListener('resize',onResizeMyFuckinBrowser,false);
function onMouseMove(event){
var mouseX = event.clientX - wi/2;
var mouseY = event.clientY - he/2;
camera.position.x = (mouseX - camera.position.x) * 0.02;
camera.position.y = (-mouseY - camera.position.y) * 0.02;
camera.position.z = distance;
camera.lookAt(scene.position);
}
function onResizeMyFuckinBrowser(){
var wi = window.innerWidth;
var he = window.innerHeight;
renderer.setSize(wi ,he);
}
function wanarender(){
requestAnimationFrame(wanarender);
renderer.render(scene, camera);
}
Terima kasih atas bantuan Anda :-)