Android Open Source - egotrip Route Overlay

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Back to project page egotrip.

License

The source code is released under:

Apache License

Java Source Code

package net.myegotrip.egotrip.map;
/*from   w ww.j  a  v a2s.c  o m*/
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.RectF;

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

public class RouteOverlay extends Overlay {

  private GeoPoint gp1;
  private GeoPoint gp2;
  private int mRadius = 6;
  private int mode = 0;
  private int color;
//  private String text = "";
//  private Bitmap img = null;
  
  public static int MODE_START = 1;
  public static int MODE_LINE = 2;
  public static int MODE_END = 3;
  
  public static int COLOR_SPEED = 1;
  public static int COLOR_HEIGHT = 2;
  public static int COLOR_SAME = 0;
  public int color_mode = 1;
  
  float speed;
  float height_diff;
  
  public RouteOverlay(RoutePoint p1, RoutePoint p2, int COLOR_MODE) {
    gp1 = null;
    if (p1 != null) {
      gp1 = p1.getGeoPoint();
      color = p1.getColor();
      speed = p1.getLocation().getSpeed();
    }
    
    gp2 = null;
    if (p2 != null) {
      gp2 = p2.getGeoPoint();
      color = p2.getColor();
      speed = p2.getLocation().getSpeed();
    }
    
    mode = MODE_LINE;
    this.color_mode = COLOR_MODE;
    
    if (gp1 == null) {
      // start
      gp1 = gp2;      
      mode = MODE_START;
    }
    else if (gp2 == null) {
      // start
      gp2 = gp1;
      mode = MODE_END;    
    }      
    else {
      speed = (p1.getLocation().getSpeed()+p2.getLocation().getSpeed())/2;
      height_diff = (float) (p2.getLocation().getAltitude() - p1.getLocation().getAltitude());
    }
  }
  
  public RouteOverlay(GeoPoint gp1, GeoPoint gp2, int mode, int COLOR_MODE, int defaultColor) {
    this.gp1 = gp1;
    this.gp2 = gp2;
    this.mode = mode;
    this.color_mode = COLOR_MODE;
    this.color = defaultColor;
  }

//  public void setText(String t) {
//    this.text = t;
//  }
//
//  public void setBitmap(Bitmap bitmap) {
//    this.img = bitmap;
//  }

  public int getMode() {
    return mode;
  }

  @Override
  public boolean draw(Canvas canvas, MapView mapView, boolean shadow, long when) {
    Projection projection = mapView.getProjection();
    //if (shadow == false) {
      Paint paint = new Paint();
      paint.setAntiAlias(true);
      Point point = new Point();
      
      projection.toPixels(gp1, point);
      // mode=1：start
      
      // color as function of either speed or altitude
      
      if (mode == MODE_START) {
        if (color <0) paint.setColor(Color.BLACK); // Color.BLUE
        else paint.setColor(color);
        RectF oval = new RectF(point.x - mRadius, point.y - mRadius, point.x + mRadius, point.y + mRadius);
        // start point
        
        canvas.drawOval(oval, paint);
      }    
      else if (mode == MODE_LINE) {
        
        if (color_mode == COLOR_SAME) {
          // all same color
          color = Color.RED;
        }
        else if (color_mode == COLOR_HEIGHT) {
          // m 
          if (height_diff < Math.abs(10)) color = Color.BLACK;
          else if (height_diff > 0) color = Color.RED;
          else color = Color.GREEN;
        }
        else {
          // speed in m/sec
          if (speed < Math.abs(5)) color = Color.BLACK;
          else if (speed > 50) color = Color.RED;
          else color = Color.GREEN;
        }
        
        paint.setColor(color);        
        
        Point point2 = new Point();
        projection.toPixels(gp2, point2);
        paint.setStrokeWidth(5);
        
        paint.setAlpha(120);
        canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
        
      }      
      else if (mode == MODE_END) {
        if (color < 0) paint.setColor(Color.BLACK); // Color.GREEN
        else paint.setColor(color);

        Point point2 = new Point();
        projection.toPixels(gp2, point2);
        paint.setStrokeWidth(5);
        paint.setAlpha(120);
        canvas.drawLine(point.x, point.y, point2.x, point2.y, paint);
        RectF oval = new RectF(point2.x - mRadius, point2.y - mRadius, point2.x + mRadius, point2.y + mRadius);
        /* end point */
        paint.setAlpha(255);
        canvas.drawOval(oval, paint);
      }
  //  }
    return super.draw(canvas, mapView, shadow, when);
  }
  

}

Java Source Code List

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