unitesection.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.our.cut;
import net.aetherial.gis.surface.ItemValue;
import net.aetherial.gis.garmin.GarminGMLDoc;
import org.w3c.dom.*;
/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2004</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class UniteSection {
  private Node track1 =null,track2 =null;
  private String orderT1 = "",orderT2 = "";
  private boolean t1first = true;
  private static int id =0;
  private String trackName ="合并的航迹";
  public UniteSection() {
    trackName  = trackName +this.id;
  }
  private double getDistance(Node tp1,Node tp2){
    double distance = ItemValue.calculateDistanceBetween2Nodes1(tp1,tp2);
    return distance;
  }
  private void setOrder(){
    Node t1p1 = ItemValue.getTracksPoint(this.track1).item(0);
    Node t1p2 = ItemValue.getTracksPoint(this.track1).item(ItemValue.getTracksPoint(this.track1).getLength()-1);
    Node t2p1 = ItemValue.getTracksPoint(this.track2).item(0);
    Node t2p2 = ItemValue.getTracksPoint(this.track2).item(ItemValue.getTracksPoint(this.track2).getLength()-1);
    double d1= this.getDistance(t1p1,t2p1);
    double d2= this.getDistance(t1p1,t2p2);
    double d3= this.getDistance(t1p2,t2p1);
    double d4= this.getDistance(t1p2,t2p2);
    double test = this.getMin(d1,d2,d3,d4);
    if(test == d1){
      this.setOrder("desc","asc");
    }else if(test == d2){
      this.setOrder("desc","desc");
    }else if(test == d3){
      this.setOrder("asc","asc");
    }else if(test == d4){
      this.setOrder("asc","desc");
    }
  }
  public void setTracksName(String trackName){
    this.trackName = trackName;
  }
  private void setOrder(String order1,String order2){
    this.orderT1 = order1;
    this.orderT2 = order2;
  }
  private void setFirst(boolean first){
    this.t1first = first;
  }
  private double getMin(double d1,double d2,double d3,double d4){
    double test = d1;
    if(test>d2){
      test = d2;
    }
    if(test>d3){
      test = d3;
    }
    if(test>d4){
      test = d4;
    }
    return test;
  }
  private Node[] getNode(){
    NodeList nl1 = ItemValue.getTracksPoint(this.track1);
    NodeList nl2 = ItemValue.getTracksPoint(this.track2);
    Node[] node = new Node[nl1.getLength()+nl2.getLength()];
    if(this.orderT1.equals("asc")){
      for(int i = 0;i<nl1.getLength();i++){
        node[i] = nl1.item(i);
      }
    }else{
      for(int i = 0;i<nl1.getLength();i++){
        node[nl1.getLength()-i-1] = nl1.item(i);
      }
    }

    if(this.orderT2.equals("asc")){
      for(int i = 0;i<nl2.getLength();i++){
        node[i+nl1.getLength()] = nl2.item(i);
      }
    }else{
      for(int i = 0;i<nl2.getLength();i++){
        node[nl1.getLength()+nl2.getLength()-i-1] = nl2.item(i);
      }
    }
    return node;
  }
  public void insertIntoGarminDoc(){
    this.setOrder();
    this.id++;
    Node[] node = this.getNode();
    if(node==null){
      return;
    }else{
      Element e = GarminGMLDoc.addTrack(this.trackName,this.track1);
      for(int i = 0;i<node.length;i++){
        GarminGMLDoc.addTrackPoint(e,node[i]);
      }
    }

  }
  public void setTrack(int pos1,int pos2){
    this.track1 = ItemValue.getTracksByPos(pos1);
    this.track2 = ItemValue.getTracksByPos(pos2);
  }

}