本程序实现以下功能：

1.绘制茶壶(T)

2.添加光照(T)

3.添加纹理(T)

4.鼠标左键控制茶壶旋转(T)

操作步骤：按鼠标左键茶壶旋转，按一次旋转30°。

5.鼠标右键控制茶壶平移(T)

操作步骤：按鼠标右键茶壶向右移动，每次移动0.5厘米

6.键盘控制茶壶纹理的变化(T)

操作步骤：按键盘的 w 和 s 键实现纹理的改变

7.键盘方向键控制camera的前进后退，左移和后移 (T)

操作步骤：按键盘的四个方向键实现茶壶四种方向的移动

8.实现水壶的退出-This procedure to achieve the following functions: 1. Drawing teapot (T) 2. Add light (T) 3. Add texture (T) 4. Teapot rotating the left mouse button to control (T) steps: Click the left mouse button rotate the pot by a rotation 30 °. 5. Teapot with the right mouse button to control translation (T) steps: Click the right mouse button to the right teapot mobile, each mobile 0.5 centimeters 6. Teapot keyboard to control the changes in texture (T) steps: click the ' w ' and'　s'　key changes to achieve texture 7. the keyboard arrow keys to control the forward camera back, the left and post-shift (T) steps: the four keyboard arrow keys to achieve the direction of movement of the four teapot 8. to achieve water out of the pot