The calculation method of reverse NURBS nodevector is improved.
改进了反算nurbs节点矢量的计算方法。
2
But surface generation requests through a series of curves, and it finally produces control vertex and nodevector satisfied with surface request.
而蒙面曲面的生成则要求生成的曲面通过一系列的曲线，它最终生成曲面所需要的控制顶点和相应的节点矢量。
3
Vector data require far less storage than raster data because arc node lists simplify and reduce the data required to make sense of the features contained in the map.