本人用VC编写的由水系图求水系密度程序源码，对GIS开发的朋友可能有些帮助，目前只支持灰度分析，彩色分析正在编写中。-I VC prepared by the water stream density map for procedures source, on the development of the GIS may help to a friend, only to support the gray analysis, color analysis being prepared.

一个基于文件流的三角网生成库，用c++写的，速度非常快,A file-based stream library to generate a triangular network, with c++ written by very fast

在txt文档中定义一组多边形的顶点，用流文件的形式读入文件。继而通过界面进行平移、缩放以及旋转操作，最后将变换后的对变形的顶点坐标同样用流文件的形式读出到一个新的txt文档中。-Defines a set of polygon vertices in txt document, read the file in the form of a stream file. Followed by the interface pan, zoom and rotate operations, and fin