qizhidianname.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.test.tools.pointName;

import org.w3c.dom.Node;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;
import net.aetherial.gis.surface.ItemValue;
import org.w3c.dom.NodeList;
import net.aetherial.gis.our.FrameOur;
import net.aetherial.gis.garmin.GarminGMLDoc;
import org.w3c.dom.Element;
import java.io.File;
import net.aetherial.gis.output.toLd.OpenDirectory;
import net.aetherial.gis.jiaotongbu.input.publicuse.ReFangxiang;
import net.aetherial.gis.jiaotongbu.input.jxl.ReadFangxiang;
import net.aetherial.gis.publicuse.track.ConcatenatedTrack;

/**
 * <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 QiZhiDianName {
  private Vector wpts = new Vector();

  public QiZhiDianName() {
  }

  private Node getNearstNode(Node trackpoint) {
    if (trackpoint == null) {
      System.out.println("trackpoint null");
      return null;
    }

    if (wpts == null) {
      System.out.println("wpts null");
    }
    double minDis = Double.MAX_VALUE, dis;
    Node wpt = null,wptsNode = null;;

    for (int i = 0; wpts != null && i < wpts.size(); i++) {
      wptsNode = (Node)wpts.get(i);
      dis = this.getDis(wptsNode, trackpoint);
//      System.out.println("dis:" + dis + ",minDis:" + minDis);
      if (dis < minDis) {
        minDis = dis;
        wpt = wptsNode;
//        System.out.println(ItemValue.getWaypointName(wpt));
      }
    }
//    System.out.println(ItemValue.getWaypointName(wpt)+"**********!");
//    this.wpts.remove(wpt);
    return wpt;
  }

  private double getDis(Node wpt, Node trackpoint) {
    double w_x = Double.parseDouble(ItemValue.getWaypointX(wpt));
    double w_y = Double.parseDouble(ItemValue.getWaypointY(wpt));
    double tp_x = Double.parseDouble(ItemValue.getTracksPointX(trackpoint));
    double tp_y = Double.parseDouble(ItemValue.getTracksPointY(trackpoint));
//    System.out.println("w_x:"+ w_x + ",tp_x" + tp_x + ",w_x - tp_x:" + (tp_x - w_x));
//    System.out.println("w_y:"+ w_y + ",tp_y" + tp_y + ",w_y - tp_y:" + (w_y - tp_y));
    return Math.sqrt( (w_x - tp_x) * (w_x - tp_x) + (w_y - tp_y) * (w_y - tp_y));
  }

  public String getQidianName(Node track) {
    NodeList nl = ItemValue.getTracksPoint(track);
    if (nl != null) {
      Node temp = this.getNearstNode(nl.item(0));
      if (temp != null) {
        return ItemValue.getWaypointName(temp);
      }else{
        System.out.println("Qidian == null");
      }
    }


    return "";

  }

  public String getZhidianName(Node track) {
    NodeList nl = ItemValue.getTracksPoint(track);
    if (nl != null) {
      Node temp = this.getNearstNode(nl.item(nl.getLength() - 1));
      if (temp != null) {
        return ItemValue.getWaypointName(temp);
      }
    }

    return "";
  }

  public void setWpts(Node[] wpts) {
    this.wpts.removeAllElements();
    for (int i = 0; wpts != null && i < wpts.length; i++) {
      this.wpts.add(wpts[i]);
    }

  }
}