the following program allow you to draw using your finger and great sample for opengl

这是一个OpenGL程序，在OS X的Xcode上开发，描述的是一个包含太阳、月球、地球的太阳系，太阳自转、地球公转并自转、月球公转并自转。-This is an OpenGL program developed in OS X Xcode described is the one that contains the sun, the moon, the Earth' s solar system, the sun' s rotation, the revolution of the

这是一个OpenGL程序，在OS X的Xcode上开发，描述的是一个房间里的局部光照模型下的情形，适合初学者。-This is an OpenGL program in OS X Xcode development, described the case of a room under local illumination model, suitable for beginners.