Gis初学着使用，代码简介易懂，主要功能：图形的平移缩放，面积长度测量等二维图形基本操作函数。-Gis a beginner to use, easy to understand the code profile, the main features: Pan and Zoom Graphics, area length measurement function of the basic operation of two-dimensional graphics.

该C#程序的功能室通过C#编程，调用KML接口类，通过将KML语句写入txt文件并保存为.KML文件的方法，来创造出需要的复杂的KML图形文件，尤其是涉及到计算的形体，例如一个多点球体。-Method function room procedures through the C# C# programming, call KML interface class, the statement by writing KML file and save it as .KML txt file to c