Reply To: 作业7判断直接光照是否被其他物体遮挡的疑问

[oxine]

说的没错，我是这样的
if ((insec_light.distance - Scene::intersect(Ray(hitPoint, ws)).distance)<EPSILON) {// if not blocked
能得到正确的结果，注意insec_light.distance需要手动赋值
insec_light.distance = (insec_light.coords - hitPoint).norm();

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