我怎样才能得到一个three.js组的尺寸？

Question

I can get the dimensions of a mesh (Three.Mesh):

mymesh.geometry.computeBoundingBox()
var bbox = mymesh.geometry.boundingBox;
var bboxWidth = bbox.max.x - bbox.min.x;
var bboxHeight = bbox.max.y - bbox.min.y;
var bboxDepth = bbox.max.z - bbox.min.z;

But a group that has multiple meshes within it:

var mygroup = new THREE.Group();

doesn't have a computeBoundingBox()/boundingBox?

Answer 1

Thanks to one of the commentors, it was an easy solution:

var box = new THREE.Box3().setFromObject(theGroup);
var sizeX = box.getSize().x;
var sizeY = box.getSize().y;
var sizeZ = box.getSize().z;