C++ (Cpp) Frustum::CheckBox示例

void wiSPTree::getVisible(Node* node, Frustum& frustum, CulledList& objects, SortType sort, CullStrictness type){
	if(!node) return;
	int contain_type = frustum.CheckBox(node->box.corners);
	if(!contain_type) 
		return;
	else{
		for(Cullable* object : node->objects)
			if(
				type==SP_TREE_LOOSE_CULL || 
				(type==SP_TREE_STRICT_CULL &&
					contain_type==BOX_FRUSTUM_INSIDE ||
					(contain_type==BOX_FRUSTUM_INTERSECTS && frustum.CheckBox(object->bounds.corners))
				)
			)
			{

#ifdef SORT_SPTREE_CULL
				object->lastSquaredDistMulThousand=(long)(wiMath::Distance(object->bounds.getCenter(),frustum.getCamPos())*1000);
				if (sort == SP_TREE_SORT_PAINTER)
					object->lastSquaredDistMulThousand *= -1;
#endif

				objects.insert(object);
			}
		if(node->count){
			for (unsigned int i = 0; i<node->children.size(); ++i)
				getVisible(node->children[i],frustum,objects,sort,type);
		}
	}
}