GeoTools Polygon smooth方法

最近有个任务需要把 带有菱角的polygon数据处理光滑，网上搜索后发现GeoTools Polygon smooth方法 ，很好用。代码如下

import org.geotools.geometry.jts.JTS;
import org.geotools.geometry.jts.JTSFactoryFinder;

import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.Polygon;
import com.vividsolutions.jts.io.ParseException;
import com.vividsolutions.jts.io.WKTReader;

public class test {

public static void main(String[] args) {
// TODO Auto-generated method stub
String p=”POLYGON((121.76762347504986 31.264281436214233,120.74589495942485 31.085685429106803,121.03153949067486 30.23515447986118,121.76762347504986 31.264281436214233))”;
      
System.out.println(p);
System.out.println(getSmoothPolygonByGeoTools(p));

}
private static GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory( null );
public static String getSmoothPolygonByGeoTools(String polygonargs) {
// TODO Auto-generated method stub

WKTReader reader = new WKTReader( geometryFactory );
Polygon polygon = null;
try {
polygon = (Polygon) reader.read(polygonargs);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
   GeometryFactory  f= new GeometryFactory();
Polygon re= (Polygon) JTS.smooth(polygon, 1);
String rs=”POLYGON((“;
for(int i=0;i<re.getCoordinates().length;i++){
//System.out.println(re.getCoordinates()[i].x+”,”+re.getCoordinates()[i].y);
rs+=re.getCoordinates()[i].x+” “+re.getCoordinates()[i].y+”,”;
}
rs=rs.substring(0,rs.length()-1);
rs=rs+”))”;
return rs;
}
}

转载自：https://blog.csdn.net/qq_23520069/article/details/79700526