droop

画画的,一个简简单单的画画的小型的C++编的软件(Paint of, a Chien is simple painting of list of small scaled C++weave of software)

本代码实现两段贝切尔曲线的拼接，这里会分别显示两段曲线，再显示拼接后的曲线。(The code implements the splicing of the two sections Bei Qieer curve, and here are two curves, and then display the mosaic curve.)

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 )

AUTOCAD 程序员使用的，ARX图纸数据结构显示(AutoCAD programmers using the data structure ARX drawings show)

读取DXF文件(2000,2002版本),包括了分层管理数据的思想,供大家参考(read DXF files (version 2000, 2002), including a hierarchical data management thinking, for your reference)

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.)

说明：  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.)

scatterbar就是画出三维散点柱状图，并且可以调整柱子的大小和颜色渐变，比原函数bar3更方便，更好用。(scatterbar is to draw three-dimensional scatter histogram, and can adjust the size and color gradients pillars, and more convenient than the original function bar3, easier to use)

基于simulink的bouc-wen程序，画迟滞曲线图(simulink bouc-wen)

使用PSCAD建立了一个风电场模型，效果很好(Use PSCAD built a wind farm model, the effect is very good)