在Java中,可以使用JTS(Java Topology Suite)库来获取点在线段的垂足点位置。以下是一个简单的示例代码,展示了如何使用JTS获取点到线段的垂足点位置:
首先,确保你的项目中包含了JTS库。
import org.locationtech.jts.geom.LineString;
import org.locationtech.jts.geom.Point;
import org.locationtech.jts.io.ParseException;
import org.locationtech.jts.io.WKTReader;
import org.locationtech.jts.linearref.LinearLocation;
import org.locationtech.jts.linearref.LocationIndexedLine;
public class LineLocatePointExample {
public static void main(String[] args) throws ParseException {
WKTReader wktReader = new WKTReader();
//线L1
LineString lineString = (LineString) wktReader.read("LINESTRING (116.383555501302 39.9708582899306,116.384524468316 39.9708976236979)");
//点p1
Point point = (Point) wktReader.read("POINT(116.3836 39.97083)");
LocationIndexedLine location = new LocationIndexedLine(lineString);
LinearLocation linearLocation = location.indexOf(point.getCoordinate());
System.out.println("Point is " + linearLocation.getSegmentFraction() + " along the line");
}
}
确保你的类路径中包含了JTS库,然后运行上述代码,它会输出点到线段所在直线上的垂足点位置。