Android Open Source - SmartNavi Kml Multi Geometry

• Back to Map/navigation  ↑

From Project

Back to project page SmartNavi.

License

The source code is released under:

Apache License

Java Source Code

package org.osmdroid.bonuspack.kml;
/*  w w  w . ja v  a  2  s  . com*/
import java.io.IOException;
import java.io.Writer;
import java.util.ArrayList;
import org.osmdroid.bonuspack.kml.KmlFeature.Styler;
import org.osmdroid.bonuspack.overlays.FolderOverlay;
import org.osmdroid.bonuspack.utils.BonusPackHelper;
import org.osmdroid.util.BoundingBoxE6;
import org.osmdroid.util.GeoPoint;
import org.osmdroid.views.MapView;
import org.osmdroid.views.overlay.Overlay;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import android.content.Context;
import android.os.Parcel;
import android.os.Parcelable;

/**
 * KML MultiGeometry and/or GeoJSON GeometryCollection. 
 * It can also parse GeoJSON MultiPoint. 
 * @author M.Kergall
 */
public class KmlMultiGeometry extends KmlGeometry implements Cloneable, Parcelable {

  /** list of KmlGeometry items. Can be empty if none, but is not null */
  public ArrayList<KmlGeometry> mItems;
  
  public KmlMultiGeometry(){
    super();
    mItems = new ArrayList<KmlGeometry>();
  }

  /** GeoJSON constructor */
  public KmlMultiGeometry(JsonObject json){
    this();
    String type = json.get("type").getAsString();
    if ("GeometryCollection".equals(type)){
      JsonArray geometries = json.get("geometries").getAsJsonArray();
          if (geometries != null) {
              for (JsonElement geometrieJSON:geometries) {
                mItems.add(parseGeoJSON(geometrieJSON.getAsJsonObject()));
              }
          }
    } else if ("MultiPoint".equals(type)){
      JsonArray coordinates = json.get("coordinates").getAsJsonArray();
      ArrayList<GeoPoint> positions = parseGeoJSONPositions(coordinates);
      for (GeoPoint p:positions){
        KmlPoint kmlPoint = new KmlPoint(p);
        mItems.add(kmlPoint);
      }
    }
  }
  
  public void addItem(KmlGeometry item){
    mItems.add(item);
  }
  
  /** Build a FolderOverlay containing all overlays from this MultiGeometry items */
  @Override public Overlay buildOverlay(MapView map, Style defaultStyle, Styler styler, KmlPlacemark kmlPlacemark, 
      KmlDocument kmlDocument){
    Context context = map.getContext();
    FolderOverlay folderOverlay = new FolderOverlay(context);
    for (KmlGeometry k:mItems){
      Overlay overlay = k.buildOverlay(map, defaultStyle, styler, kmlPlacemark, kmlDocument);
      folderOverlay.add(overlay);
    }
    return folderOverlay;
  }
  
  @Override public void saveAsKML(Writer writer) {
    try {
      writer.write("<MultiGeometry>\n");
      for (KmlGeometry item:mItems)
        item.saveAsKML(writer);
      writer.write("</MultiGeometry>\n");
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  @Override public JsonObject asGeoJSON() {
    JsonObject json = new JsonObject();
    json.addProperty("type", "GeometryCollection");
    JsonArray geometries = new JsonArray();
    for (KmlGeometry item:mItems)
      geometries.add(item.asGeoJSON());
    json.add("geometries", geometries);
    return json;
  }

  @Override public BoundingBoxE6 getBoundingBox(){
    BoundingBoxE6 finalBB = null;
    for (KmlGeometry item:mItems){
      BoundingBoxE6 itemBB = item.getBoundingBox();
      if (itemBB != null){
        if (finalBB == null){
          finalBB = BonusPackHelper.cloneBoundingBoxE6(itemBB);
        } else {
          finalBB = BonusPackHelper.concatBoundingBoxE6(itemBB, finalBB);
        }
      }
    }
    return finalBB;
  }
  
  //Cloneable implementation ------------------------------------
  
  @Override public KmlMultiGeometry clone(){
    KmlMultiGeometry kmlMultiGeometry = (KmlMultiGeometry)super.clone();
    kmlMultiGeometry.mItems = new ArrayList<KmlGeometry>(mItems.size());
    for (KmlGeometry item:mItems)
      kmlMultiGeometry.mItems.add(item.clone());
    return kmlMultiGeometry;
  }
  
  //Parcelable implementation ------------
  
  @Override public int describeContents() {
    return 0;
  }

  @Override public void writeToParcel(Parcel out, int flags) {
    super.writeToParcel(out, flags);
    out.writeList(mItems);
  }
  
  public static final Parcelable.Creator<KmlMultiGeometry> CREATOR = new Parcelable.Creator<KmlMultiGeometry>() {
    @Override public KmlMultiGeometry createFromParcel(Parcel source) {
      return new KmlMultiGeometry(source);
    }
    @Override public KmlMultiGeometry[] newArray(int size) {
      return new KmlMultiGeometry[size];
    }
  };
  
  public KmlMultiGeometry(Parcel in){
    super(in);
    mItems = in.readArrayList(KmlGeometry.class.getClassLoader());
  }
}

Java Source Code List

• Back to Map/navigation  ↑