0
有人可以解释一下为什么在下面的代码中没有可见的粒子？ 按照教程，一切似乎没问题。three.js中的粒子
(function() {
var camera, scene, renderer;
init();
animate();
function init() {
scene = new THREE.Scene();
var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
var VIEW_ANGLE = 45, ASPECT = SCREEN_WIDTH/SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
camera = new THREE.PerspectiveCamera(VIEW_ANGLE, ASPECT, NEAR, FAR);
scene.add(camera);
camera.position.set(2,2,10);
camera.lookAt(scene.position);
console.log(scene.position);
var geometry = new THREE.CubeGeometry(1,1,1);
var material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
var cube = new THREE.Mesh(geometry, material);
scene.add(cube);
var pGeometry = new THREE.Geometry();
for (var p = 0; p < 2000; p++) {
var particle = new THREE.Vector3(Math.random() * 50 - 25, Math.random() * 50 - 25, Math.random() * 50 - 25);
pGeometry.vertices.push(particle);
}
var pMaterial = new THREE.ParticleBasicMaterial({ color: 0xfff, size: 1 });
var pSystem = new THREE.ParticleSystem(pGeometry, pMaterial);
scene.add(pSystem);
renderer = new THREE.CanvasRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
}
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
}
})();