01_Geometry

当用户按下鼠标左键在如下图所示的面板上移动鼠标时，根据鼠标的移动轨迹在面板上画图。(When the user presses the left mouse button on the panel as shown in the following figure to move the mouse, according to the mouse movement trajectory in the panel drawing.)

可以画图的功能强大cad软件一定不要错过你值得拥有制图高级工具(You can paint the powerful CAD software must not miss you worthy of drawing advanced tools )

cad图像纠正cad图像纠正cad图像纠正cad图像纠正(wad sdfdfgdfgfh sgd g gs gsdg sdf sf )

说明：  通过使用dxflib库，对dxf文件进行读取(Read DXF files by using the dxflib Library)

常用的画图API函数的具体使用方法，希望对画图感兴趣的人有所帮助(Commonly used drawing API the specific function to use, I hope to help people who are interested in drawing)

实现贝塞尔曲线的编程，即人为指定N个点，程序自动生成这N个点的贝塞尔曲线。(Programming Bezier curve, namely human specified N points, the program automatically generates N points Bezier curve.)

用MFC实现画图板，包括绘线，几何图形，上色等等，简单易懂。(To realize drawing board with MFC)

实现本机流量监控绘图，测试可用，方便安全(Netflow monitoring)

c++图形的绘制(曲线图.饼状图.柱状图) 以及 图形的打印 与打印预览(c++ graphics rendering (curves. caky Fig. histogram), and graphics printing and print preview)

用四阶龙格-库塔法求系统在U单位阶跃输入下该系统的响应曲线(Using the four order Runge Kutta method to find the response curve )