Android Open Source - TrafficChecker Traffic Overlay

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Back to project page TrafficChecker.

License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 *  This File is licensed under GPL v3./*from   w ww  . j a  v  a  2 s  .c o m*/
 *  Copyright (C) 2012 Rene Peinthor.
 *
 *  This file is part of TrafficChecker.
 *
 *  BlueMouse is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  TrafficChecker is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with TrafficChecker.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.oldsch00l.TrafficChecker;

import java.util.List;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;

import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;

public class TrafficOverlay extends Overlay {

  protected List<GeoPoint> mGeoList;

  public TrafficOverlay( List<GeoPoint> points) {
    mGeoList = points;
  }
  
  @Override
  public void draw(Canvas canvas, MapView mapView, boolean shadow) {
    
    if( mapView.getZoomLevel() > 10 )
    {
      Paint paint = new Paint();
      paint.setAntiAlias(true);
      paint.setColor( Color.argb( 128, 255, 0, 0) );
//      Point p = new Point();
      
      if( mGeoList.size() > 1)
      {
        paint.setStrokeWidth(9);
        canvas.drawLines( geoPointsToLine(mGeoList, mapView), paint);
      }
//      else
//      {
//        mapView.getProjection().toPixels( mGeoList.get(0), p);
//        canvas.drawCircle(p.x, p.y, mapView.getZoomLevel() - 3, paint);
//      }
    }
  }
  
  private static float[] geoPointsToLine(List<GeoPoint> points, MapView mapView) {
    float[] retfloat = new float[points.size() * 2];
    Point p = new Point();
    int i = 0;
    for (GeoPoint geopoint : points) {
      mapView.getProjection().toPixels( geopoint, p);
      retfloat[i++] = p.x;
      retfloat[i++] = p.y;
    }
    return retfloat;
  }
}

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