向场景添加THREE.Points：THREE.Object3D.add：对象不是THREE.Object3D（Javascript）的实例

Question

我试图添加一个系统粒子，一个THREE.Points到场景，但我有这个错误：

＆＃34; THREE.Object3D.add：object不是THREE.Object3D的实例。未定义＆＃34;

代码：

var backCount = 1800;
var particlesG = new THREE.Geometry();

for (var p = 0; p < backCount; p++) {
    var backgroundP = new THREE.Vector3();
    backgroundP.x = Math.random() * 3000 - 1500;
    backgroundP.y = Math.random() * 3000 - 1500;
    backgroundP.z = Math.random() * 3000 - 1500;
    particlesG.vertices.push(backgroundP);
}

var pMaterial = new THREE.PointsMaterial({color: 0xFFFFFF});

var particleSystemS = THREE.Points(particlesG, pMaterial);


scene.add(particleSystemS);

由于

Answer 1

在THREE.Points之前添加新内容。

var particleSystemS = new THREE.Points(particlesG, pMaterial);