CODEWITHSUNDEEP
animationthree.jsmesh
Jorge Guberte
Jorge Guberte

Reputation: 11054

How to change width of CubeGeometry with Three.js?

I have a CubeGeometry and a mesh, and I don't know how to change the width (or height but I can change x, y and z though). Here is a snippet of what I have right now:

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();
}

Thanks!

EDIT

Found a solution:

mesh.scale.x = 500;

Upvotes: 27

Views: 39329

Answers (3)

houssk
houssk

Reputation: 156

You can dispose of the cube geometry and affect the new one like this:

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

Upvotes: 8

Avatar
Avatar

Reputation: 15156

Just to complete comment and solution from question (and have an answer present with example code):

// 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

A slightly advanced, dynamic example (still the same scaling) implemented here:

Upvotes: 12

Harun ERGUL
Harun ERGUL

Reputation: 5942

Scale properties can be used to for changing width, height and and depth of cube.

    //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;

Upvotes: 2

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