使用Three.js對人臉進行光線投射

Question

通過使用八叉樹，我得到一個靠近物體的臉部數組。我怎麼能射線給他們。我只能找到如何將光線投射到網格，線條或點？

Answer 1

如果您使用threeoctree，您執行以下操作：

// 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);