长方体绘制函数； Height高；x1,y1,z, x2,y2,z, x3,y3,z, x4,y4,z,四个（底面的）顶点的坐标，四个点的z坐标相等。顺序为：俯视图的逆时针顺序； isTURE 是建立长方体是否成功的判定返回值，isTURE = 1则失败，isTURE = 0 则成功；-program for make a 3D rectangular filled red color,under MATLAB.

绘制x2+y2曲线，能够展示三维立体的图形(Draw the x2+y2 curve to show the 3d graphics.)