基于计算机图像学的光照模型，场景中正方体与球体整齐排列，用红色和蓝色光源，并可以按D键切换光源，通过上下左右键旋转物体。-Lighting model computer image science-based scenarios cube and ball neatly arranged, with red and blue light, and can press the D key to toggle the light source, through the up and down key