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dxflib-3.3.4-src ，dxflib是一个用来读写DXF文件的C++库。当读DXF文件的时候,dxflib分析文件并且调用用户自己定义的函数来添加实体、层、等。(dxflib-3.3.4-src，dxflib is an opensource C++ library for reading and writing AutoCAD (R) DXF files. )

off 转stl ，很好的转换软件源码。实现了off三维格式向stl三维格式转换，可用于CAD、ProE等软件对接。( Turn off to stl, good conversion software source code. Off to achieve a three-dimensional format stl three-dimensional format conversion, it can be used in CAD, ProE and other software docking.)

A simple graphics class for 2D drawing

利用电磁暂态仿真软件pscad建立的直流断路器模型(A DC circuit breaker model built by electromagnetic transient simulation software PSCAD.)

选择画图区的点从而绘制B样条曲线，是计算机图形学中一个重要的实例。使用MFC做的。(select some points in the painting area to paint B-Spline curves)

根据图框块自动识别图纸并预览打印。函数参数分别为：打印机名称，打印样式，打印纸张，打印份数，自动纸张，自动旋转，自动关闭，自动识别图框(Autoprint according to the drawing blocks.)

3次B样条小波程序，用MATLAB写的，思想简单，但要建立好像不容易，大家看看(3 bspline wavelet program,using matlab language.The idea is not complex,but it is not easy to realize it.Hope all read.)

MFC画图板，可以画一些基本图形，如直线，椭圆，扇形，矩形，弦形，三角形。 可以保存为BMP的文件(MFC drawing board, you can draw some basic graphics, such as line, ellipse, sector, rectangle, string, triangle. Files that can be saved as BMP)

用mfc绘制bezier曲线，了解bezier曲线的原理(The mfc draw bezier curve to understand the principle of the bezier curve)

不同离焦下Mtf积分曲线随相位板参数的变化，进而用来选择合适的相位板(The Mtf integral curve along with the change of phase plate parameters to appropriate phase plate)