3D动画程序，实现圆锥体的的旋转，灯光照亮，是个半透明的三维物体。-3D animation process, the realization of the cone rotating lights illuminate, is a translucent three-dimensional objects.

alternativa3d 三维网页游戏开发的利器-import alternativa.engine3d.controllers.CameraController import alternativa.engine3d.core.Camera3D import alternativa.engine3d.core.Object3D import alternativa.engine3d.core.Scene3D

Override this method with an implementation that contructs and InputStream from the given filename.