问题描述
限时送ChatGPT账号..在我的场景中,我有一个简单的立方体:
In my scene I have a simple cube:
var test = new THREE.Mesh(new THREE.CubeGeometry(10,10,10), new THREE.MeshBasicMaterial());
scene.add(test);
这个立方体通过THREE.TransformControls
被用户遍历/缩放.我需要的是这些交互后立方体的边界框.所以我在做
This cube is getting traversed/scaled through the user with THREE.TransformControls
. What I need is the boundingbox of the cube after these interactions. So I'm doing
test.geometryputeBoundingBox();
var bb = test.geometry.boundingBox;
bb.translate(test.localToWorld( new THREE.Vector3()));
但我总是得到一个错误的边界框!翻译计算正确,但不是比例.boundingbox 的宽度和高度总是 10 ...
But I always get a wrong boundingbox! The translation is computed correct, but not the scale. The width and heigth of the boundingbox is always 10 ...
这是错误还是功能?如何获得立方体的正确边界框?
Is this a bug or feature? How do I get the correct boundingbox of my cube?
推荐答案
您可以像这样计算对象(包括其子对象)的世界轴对齐边界框:
You can compute the world-axis-aligned bounding box of an object (including its children) like so:
var box = new THREE.Box3();
box.setFromObject( object );
查看源代码,了解它在做什么.
Have a look at the source code so you understand what it is doing.
三个.js.r.60
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