deletefarawaywaypoint.java

基于Java的地图数据管理软件。使用MySQL数据库管理系统。

package net.aetherial.gis.jiaotongbu.outputJTB.txtOutput.module.gpsdata;

import org.w3c.dom.Node;
import java.util.Vector;
import net.aetherial.gis.surface.ItemValue;
import net.aetherial.gis.publicuse.WptTrackDistance;

/**
 * <p>标题: 农村公路数据采集与核对工具</p>
 *
 * <p>描述: </p>
 *
 * <p>版权: Copyright (c) 2006</p>
 *
 * <p>公司: 安徽省通途信息技术公司</p>
 *
 * @author 王爱国
 * @version 1.0
 */
public class DeleteFarAwayWaypoint {
  private final double farDis = 0.0002;
  public DeleteFarAwayWaypoint() {
  }

  public void deleteFarawayWpt() {
    Node[] allWpts = ItemValue.getWaypoint();
    Node[] allTrks = ItemValue.getTracks();
    for (int i = 0; allWpts != null && i < allWpts.length; i++) {
      this.deleteFarawayWpt(allWpts[i], allTrks);
    }
  }

  private void deleteFarawayWpt(Node wpt, Node[] allTracks) {
    double dis, mindis = Double.MAX_VALUE;
    Node minDisTrack = null;
    for (int i = 0; allTracks != null && i < allTracks.length; i++) {
      dis = WptTrackDistance.getWptToTrackDis(wpt, allTracks[i]);
      if (mindis > dis) {
        mindis = dis;
        minDisTrack = allTracks[i];
      }
    }

    /**
     * 如果大于范围,删除.
     * 如果小于范围,关联至最近的航迹.
     */
    if (mindis > this.farDis) {
      ItemValue.removeWaypoint(wpt);
    }
    else {
      ItemValue.setWaypointTracksID(wpt, ItemValue.getTracksID(minDisTrack));
    }

  }
}