How do I get the height of a cube in Three.js

Question

I have the following code;

// World
var geometry = new THREE.BoxGeometry( 100, 200, 100 );
var material = new THREE.MeshLambertMaterial( { color: 'green' } );
var cube = new THREE.Mesh( geometry, material );
cube.position.y = (cube.height / 2); // this doesn't work
scene.add( cube );

What is the correct method to get the height of the cube? I know the height = 100, but I want to understand how I get the height using program code.

Answer 1

If you create a cube mesh using THREE.BoxGeometry, you can get the height of the cube by accessing the parameters property of the geometry:

height = mesh.geometry.parameters.height;

If you have changed the mesh property scale.y from its default value of 1, then you will have to multiply the above quantity by scale.y.

three.js r.71