opengl提供的都是基本图素，点线面，要绘制曲线，曲面比较困难，本程序主要就是用opengl绘制集中重要的曲线。-opengl provided are basic map elements, point, line and plane, to draw the curve, surfaces more difficult, this program is mainly focused on the important use opengl draw the curve.

通过对opengl库的引用，实现了nurbs曲线面的绘制，具有3d和2d相关建模功能的极大参考借鉴作用。-By opengl reference library and realized nurbs curve surface rendering with 3d and 2d modeling capabilities related to the role of a great reference to learn from.

绘制三维曲线的程序，利用opengl实现。希望对大家有用-Program to draw a three-dimensional curve, opengl implementation

使用opengl的反馈模式，获得glut函数绘制的曲面上某一曲线的所有点坐标，来形成动画。包括菜单显示、三维显示、运动速度调节等等。-Use opengl feedback mode, get all the coordinates of a point on the curve plotted as a function of surface glut to form animation. Including menu display, three-dimensional display, m