How to compute bounding box after using ObjLoader three.js

Question

I'm running into an issue trying to get the bounding box of the geometry of a model after it is loaded with the OBJLoader. So far I have:

var loader = new THREE.OBJLoader();
loader.load( mURL, function ( object ) {

for ( var i = 0, l = object.children.length; i < l; i ++ ) {
    geometry = object.children[0].geometry;         
    bBox = geometry.computeBoundingBox();
    console.log("have a box of "+bBox);
}
//...rest of function

But the bBox is undefined when I write it to the console. Is geometry not the right property to access in this case?

Answer 1

I think something like this should do the trick:

var loader = new THREE.OBJLoader();
loader.load( mURL, function ( object ) {

    THREE.SceneUtils.traverseHierarchy( object, function ( child ) {

        if ( child instanceof THREE.Mesh ) {

            child.geometry.computeBoundingBox();

        }

    }

}

Answer 2

This answer combines the last for the newest version of THREE.js

var loader = new THREE.OBJLoader();
loader.load( mURL, function ( object ) {
object.traverse(function ( child ) {
    if ( child instanceof THREE.Mesh ) {
        child.geometry.computeBoundingBox();
        object.bBox = child.geometry.boundingBox;//<-- Actually get the variable
    }
});
};

Now you can access the dimensions of the mesh by typing object.bBox.max.x to get x for instance.