说明：  序功能:实现B样条曲线的计算和显示..翻译 开发工具:VC 提供...·一个简单的绘图软件源代码..翻译 开发工具:VC 提供...·计算机图形学中用DDA与中点法画直线
(sequence features : B-spline curve calculation and display .. Translation Tools : VC ... provide a simple mapping software source code development tools .. Translation : VC for using computer graphics ... DDA and the midpoint of paintings straight)