如何在threejs v128+中遍历几何图形的顶点？

var geometry = new THREE.Geometry();
// 添加顶点到geometry中
geometry.vertices.push(new THREE.Vector3(0, 0, 0));
geometry.vertices.push(new THREE.Vector3(1, 1, 1));
geometry.vertices.push(new THREE.Vector3(2, 2, 2));

// 遍历顶点数组
for (var i = 0; i < geometry.vertices.length; i++) {
    var vertex = geometry.vertices[i];
    // 对每个顶点进行操作
    console.log(vertex.x, vertex.y, vertex.z);
}

var bufferGeometry = new THREE.BufferGeometry();
// 添加顶点数据到bufferGeometry中

var positions = new Float32Array([
    0, 0, 0,
    1, 1, 1,
    2, 2, 2
]);
bufferGeometry.setAttribute('position', new THREE.BufferAttribute(positions, 3));

// 获取顶点数据
var positionAttribute = bufferGeometry.getAttribute('position');
var vertexCount = positionAttribute.count;

// 遍历顶点数据
for (var i = 0; i < vertexCount; i++) {
    var x = positionAttribute.getX(i);
    var y = positionAttribute.getY(i);
    var z = positionAttribute.getZ(i);
    // 对每个顶点进行操作
    console.log(x, y, z);
}