如何使用 Three.js 更改 CubeGeometry 的宽度？

Question

我有一个 CubeGeometry 和一个网格，我不知道如何更改宽度（或高度，但我可以更改 x、y 和 z）。 这是我现在所拥有的一个片段：

const geometry = new THREE.CubeGeometry( 200, 200, 200 );
const material = new THREE.MeshBasicMaterial( { color: 0xff0000, wireframe: true } );
const mesh = new THREE.Mesh( geometry, material );
// WebGL renderer here

function render(){
    mesh.rotation.x += 0.01;
    mesh.rotation.y += 0.02;
    renderer.render( scene, camera );
}

function changeStuff(){
    mesh.geometry.width = 500; //Doesn't work.
    mesh.width = 500; // Doesn't work.
    geometry.width = 500; //Doesn't work.
    mesh.position.x = 500// Works!!

    render();
}

谢谢！

编辑

找到了解决方案：

mesh.scale.x = 500;

Answer 1

只是为了完成问题的评论和解决方案（并通过示例代码提供答案）：

// create a cube, 1 unit for width, height, depth
var geometry = new THREE.CubeGeometry(1,1,1);

// each cube side gets another color
var cubeMaterials = [ 
    new THREE.MeshBasicMaterial({color:0x33AA55, transparent:true, opacity:0.8}),
    new THREE.MeshBasicMaterial({color:0x55CC00, transparent:true, opacity:0.8}), 
    new THREE.MeshBasicMaterial({color:0x000000, transparent:true, opacity:0.8}),
    new THREE.MeshBasicMaterial({color:0x000000, transparent:true, opacity:0.8}), 
    new THREE.MeshBasicMaterial({color:0x0000FF, transparent:true, opacity:0.8}), 
    new THREE.MeshBasicMaterial({color:0x5555AA, transparent:true, opacity:0.8}), 
]; 
// create a MeshFaceMaterial, allows cube to have different materials on each face 
var cubeMaterial = new THREE.MeshFaceMaterial(cubeMaterials); 
var cube = new THREE.Mesh(geometry, cubeMaterial);

cube.position.set(0,0,0);
scene.add( cube );
cube.scale.x = 2.5; // SCALE
cube.scale.y = 2.5; // SCALE
cube.scale.z = 2.5; // SCALE

稍微高级的动态 此处实现的示例（仍然相同的缩放）：

Answer 2

您可以处理立方体几何体并影响新的几何体，如下所示：

const new_geometry = new THREE.CubeGeometry(500, 200, 200);
geometry.dispose();
cube.geometry = new_geometry;

Answer 3

缩放属性可用于更改立方体的宽度、高度和深度。

    //creating a cube 
    var geometry = new THREE.BoxGeometry(1,1,1);
    var material = new THREE.MeshBasicMaterial({color:"white"});
    var cube = new THREE.Mesh(geometry, material);


    //changing size of cube which is created.
    cube.scale.x = 30;
    cube.scale.y = 30;
    cube.scale.z = 30;