Frustum: sphere test reverted to previous version (was faster and just as accurate)
Frustum: sphere test reverted to previous version (was faster and just as accurate)

AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem