用来模拟骨骼 Skeleton 的辅助对象. 该辅助对象使用 LineBasicMaterial 材质.
const helper = new v3d.SkeletonHelper(skinnedMesh);
scene.add(helper);
WebGL / animation / skinning / blending
WebGL / animation / skinning / morph
WebGL / loader / bvh
object -- Usually an instance of SkinnedMesh. However, any instance of Object3D can be used if it represents a hierarchy of Bones (via Object3D.children).
辅助对象使用 Lines 渲染的骨数组.
构造函数传入的对象.