如何在ThreeJS中为每个点指定自己的颜色

// 创建场景
var scene = new THREE.Scene();

// 创建几何体对象
var geometry = new THREE.Geometry();

// 添加顶点
geometry.vertices.push(
  new THREE.Vector3(0, 0, 0),
  new THREE.Vector3(1, 1, 1),
  new THREE.Vector3(-1, -1, -1)
);

// 创建材质对象
var material = new THREE.PointsMaterial({ vertexColors: THREE.VertexColors });

// 设置每个顶点的颜色
geometry.colors.push(
  new THREE.Color(0xff0000), // 红色
  new THREE.Color(0x00ff00), // 绿色
  new THREE.Color(0x0000ff)  // 蓝色
);

// 创建点云对象
var points = new THREE.Points(geometry, material);

// 将点云对象添加到场景中
scene.add(points);

// 创建渲染器
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

// 渲染场景
function animate() {
  requestAnimationFrame(animate);
  renderer.render(scene, camera);
}
animate();