opengl sourc code of basic transformation

图元的几何变换，使用OpenGL函数实现图元的缩放变换。-Primitive geometric transformation, using the OpenGL pixel zoom function to achieve change.

applying transformation to an object in opengl

一个简单的opengl程序，模拟一个太阳系，可以帮助理解模型视点变换，其中还用到了灯光，初学者可以一看！-A simple opengl program to simulate a solar system, can help understand the model of perspective transformation, which also use the lights, beginners can watch one!