在autocad中，用vba语言来判断点是否在多边形内-In the autocad, the use vba language to determine point-in-polygon

点与多边形的关系判断，是gis基础算法之一。-determined the relationship between point and polygons.

计算几何——凸多边形判断+点在多边形内判断+求点到直线距离-Computational Geometry- convex polygon judgment+ points within the polygon points to determine the linear distance+ request