从 boundingBoxHelper 到 BoxHelper

Question

在 Threejs r83 中，boundingBoxHelper 已被弃用，而是使用 BoxHelper。BoxHelper的盒子怎么获得？

let boundingBox = new THREE.BoxHelper(mesh);
myObj.size = bounding.box.getSize(); // error

感谢您的帮助！

Answer 1

以下是如何使用BoxHelper和获取可渲染对象或网格的大小。

var box3 = new THREE.Box3();
var size = new THREE.Vector3(); // create once and reuse

...

var boxHelper = new THREE.BoxHelper( mesh );
scene.add( boxHelper );

box3.setFromObject( boxHelper ); // or from mesh, same answer
console.log( box3 );

box3.getSize( size ); // pass in size so a new Vector3 is not allocated
console.log( size )

三.js r.83