使用Three.js对人脸进行光线投射

Question

通过使用八叉树，我得到一个靠近物体的脸部数组。我怎么能射线给他们。我只能找到如何将光线投射到网格，线条或点？

Answer 1

如果您使用threeoctree，您执行以下操作：

// get the faces using octree search 
var octreeObjects = this.octree.search(raycaster.ray.origin, raycaster.ray.far, true, raycaster.ray.direction); 
// find the intersections only with the faces you found 
var intersections = raycaster.intersectOctreeObjects(octreeObjects);