Having an issue with my Three.js project. I've been working on a particle system and trying to animate particles as the frames are rendered. However, I'm running into a problem where the particles aren't moving at all. The code snippet I used as reference is from , which uses particle.position.y. But when I tried changing my code to match that syntax, the JS console throws an error saying
Cannot set property 'y' of undefinedHere's the full source code:
var scene, camera, renderer, particleCount = 0, particleSystem, particles;
init();
animate();
function init()
{
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
scene.add(camera);
camera.position.z = 5;
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
particleCount = 1800,
particles = new THREE.Geometry();
var pMaterial = new THREE.ParticleBasicMaterial({color: 0xFFFFFF, size: 0.5});
for (var i = 0; i < particleCount; i++)
{
var pX = Math.random() * 500 - 250,
pY = Math.random() * 500 - 250,
pZ = Math.random() * 500 - 250,
particle = new THREE.Vector3(pX, pY, pZ);
particles.vertices.push(particle);
}
particleSystem = new THREE.ParticleSystem(particles, pMaterial);
scene.add(particleSystem);
}
function animate()
{
requestAnimationFrame(animate);
renderer.render(scene, camera);
var pCount = particleCount;
while (pCount--)
{
var particle = particles.vertices[pCount];
particle.y = Math.random() * 500 - 250;
particleSystem.geometry.vertices.needsUpdate = true;
}
}