使用OGR读取OGRLineString（类型为wkbLineString）

by giser · 2019-04-20

By wangsh 2011.12.16

最近在使用ogr读取道路数据，发现大多数对象为多线类型，以前仅处理简单线，这里必须考虑解析读取多线对象。这里列出处理简单线例子供大家参考：

poFeature = poLayer->GetNextFeature()

poGeometry = poFeature->GetGeometryRef();

if( poGeometry != NULL && wkbFlatten(poGeometry->getGeometryType()) == wkbLineString )
{

std :: vector<PointT> arrPoints;
OGRLineString *poLineString = (OGRLineString *) poGeometry;

std :: vector<PointT> arrPoints;

v++;
nLineID++;

int nnCount = poLineString->getNumPoints();

      SHPLine sShpLine;
      sShpLine.nLineID = nLineID;
      sShpLine.nCount = nnCount;

PointT point;

for (int j=0; j < nnCount; j++)
{

       point.x = poLineString->getX(j);
       point.y = poLineString->getY(j);
       double vx = point.x;
       double vy = point.y;

arrPoints.push_back(point);

}

转载自：https://blog.csdn.net/wsh6759/article/details/7080957