/*
This file is part of RouteConverter.
RouteConverter 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 2 of the License, or
(at your option) any later version.
RouteConverter 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 RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.mapview.mapsforge.lines;
import org.mapsforge.core.graphics.Canvas;
import org.mapsforge.core.graphics.Paint;
import org.mapsforge.core.model.BoundingBox;
import org.mapsforge.core.model.LatLong;
import org.mapsforge.core.model.Point;
import org.mapsforge.map.layer.Layer;
import slash.navigation.mapview.mapsforge.MapsforgeMapView;
import java.util.List;
import static org.mapsforge.core.util.MercatorProjection.*;
/**
* A line spanning across several {@link LatLong}s on {@link MapsforgeMapView}
*
* @author Christian Pesch, inspired by Vass G�bor https://groups.google.com/forum/#!msg/mapsforge-dev/9svKL86y4aM/WdIay38iNeEJ
*/
public class Polyline extends Layer {
private final List<LatLong> latLongs;
private final Paint paint;
private final int tileSize;
public Polyline(List<LatLong> latLongs, Paint paint, int tileSize) {
this.latLongs = latLongs;
this.paint = paint;
this.tileSize = tileSize;
}
public void draw(BoundingBox boundingBox, byte zoomLevel, Canvas canvas, Point topLeftPoint) {
long mapSize = getMapSize(zoomLevel, tileSize);
for (int i = 0; i < latLongs.size() - 1; i++) {
LatLong from = latLongs.get(i);
int fromX = (int) (longitudeToPixelX(from.longitude, mapSize) - topLeftPoint.x);
int fromY = (int) (latitudeToPixelY(from.latitude, mapSize) - topLeftPoint.y);
LatLong to = latLongs.get(i + 1);
int toX = (int) (longitudeToPixelX(to.longitude, mapSize) - topLeftPoint.x);
int toY = (int) (latitudeToPixelY(to.latitude, mapSize) - topLeftPoint.y);
canvas.drawLine(fromX, fromY, toX, toY, paint);
}
}
}