PIC2

A simple graphics class for 2D drawing

利用逐点法绘制出图形，图形的绘制其实都是由折线组成的，只是每条折线的误差太小了，肉眼根本分辨不出来(use of the point-by-point drawing graphics, the graphics are actually drawn from the composition of the dogleg, only broken each of error is too small, the human eye can not be seen)

MFC做的画图软件 只能画直线 还有待改进 适合初学者 看看(MFC do draw a straight line drawing software can be improved for beginners look)

MFC画图程序,实现动态画直线、椭圆等功能(MFC drawing procedures, to achieve dynamic painting a straight line, oval and other functions)

mfc绘图，用于绘制坐标系图形。动画的我的基本思路。(mfc draw)

说明：  用VC++编写，MFC文档框架，是一个简易的画图小程序，在文档界面上画图(With VC++ Prepared, MFC framework document is a simple drawing of small procedures, the document interface drawing)

draw用法。新手必看，通俗易懂，请结合工具书(draw Xinshoubikan usage, easy to understand)

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)

解析法面积计算,读数据文件,计算后生成结果文件,任意多边形的顶点坐标,然后 计算出面积是平方米和公顷(analytical calculation, reading data files, calculation results generated documents, arbitrary polygon vertices, then compute the area of square meters and ha)

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 )