paint

能实现椭圆曲线密码的加密解密过程，功能齐全，易于实现(Can realize the elliptic curve cryptography decipher process, function is complete, easy to realize)

一个完整的图形编程源程序，可供图形编程者学习(A complete graphical programming source code available for graphics programmers to learn)

DDA直线绘制程序实现，可以是任意的直线。(DDA line drawing program, a straight line can be arbitrary.)

测绘方面的道路中桩计算程序。缓和曲线、圆曲线。(Surveying and mapping aspects of the road in the pile calculation program. Curve, the circular curve.)

一个简单的程序，可以绘制点、线、圆、方。可以保存成一定格式的图片文件。软件最大的问题是绘图基本在对应的鼠标事件里进行，而没有在paint方法里进行，可借鉴。(A simple program, you can draw points, lines, circles, square. Can be saved into a certain format image files. The biggest problem is the graphics software basic mouse events in the corresponding conduct, but not in the paint method in the conduct, we may learn.)

说明：  mfc下绘出样条曲线，并根据样条曲线对其上的值进行差值。(mfc-spline curves plotted under and in accordance with spline curve on the value of their difference.)

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.)

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)

matcom衰减振荡曲线（多线程）如果直接运行exe文件,只须将ago4501.dll和v4501v.dll加入相应的release目录即可。(matcom oscillation decay curve (multi-threaded))

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)