tin三角网的构造 tin是使用不规则多边形拟和地球表面或者其他不规则表面，是构造数字地面模型，数字高程模型的基本方法之一-tin structure of triangulation is the use of tin to be irregular polygon and the Earth s surface or other irregular surfaces, is constructed digital terrain model, digital elevation mode

在vb+mapx下，在地图的临时图层上画线测多边形的面积。-Vb+ mapx at the next, the map layer on the provisional draw polygon area measurement line.

Polygon是使用vb书写的一个判断多边形顺（逆）时针、凸凹性的程序。多变形数据存储在.dat文件中，使用时，只需要导入数据即可判断-Polygon is the use of a judge writing vb polygon Soon (inverse) clock, convexity of the procedure. More data is stored in the deformation. Dat file, used only to determine the need t

用VB开发的雕塑，斜坡和沼泽地填充代码，在多边形中填充，简单易懂-VB developers sculpture, slopes and wetlands filled code, polygon fill, easy to understand