the-four-order-Runge-Kutta-method.

计算机图形学 杨钦 徐永安 翟红英 编著(Computer graphics Yang Qin XU Yong Di Hongying edited)

本代码实现了一个地图比例尺的功能，方便各种地图类型代码的基本控件使用(This code implements a function of map scale to facilitate a variety of map types of code to use the basic controls)

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 )

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

DCAC INVERTER MODELLING BY PSCAD/EMTDC

PSCAD仿真,可以设置各种故障,故障类型可以自由设置,并且得到故障仿真图形,本程序中附有单相故障(PSCAD simulation, you can set a variety of failures, fault types can be set free, and get fault simulation graphics, the program with a single-phase failur)

说明：  一个模拟cad画图的程序,实现了直线,椭圆,圆,矩形等图形的画法.需要安装后才能查看源码和相关文档(cad drawing a simulation procedures to achieve a straight line, oval, round, rectangular and other graphics painting. Installed after looking at the source and related documentation)

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.)

绘图板软件，实现了文件打开，矢量保存，各种线和图形的绘画，颜色的更换。(it is a paint pad,you can use it to change your color,your paint,and can save yours.)

DDA算法画直线，可以实现在网格下逐点画直线。(DDA algorithm for drawing straight lines, can be achieved in a grid-by drawing straight line.)