Introduction - If you have any usage issues, please Google them yourself
First, draw a table has four legs, one of the four legs of different shapes, like the location, so the first leg draw Writing a function Draw_Leg113 (a, b, c), and put through the parameters of the location mapping function tell. Function of relatively simple implementation, just the first push, after the pop the protection of the current matrix, and then after a shift, scaling z-axis and draw to complete the cube.