/***************************************************************************
* Copyright (C) 2009 by Tomasz Stelmach *
* http://www.stelmach-online.net/ *
* *
* This program 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. *
* *
* This program 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 this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
package org.openstreetmap.josm.plugins.piclayer.actions.transform;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.awt.Point;
import java.awt.event.MouseEvent;
import java.awt.geom.Point2D;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.gui.MapFrame;
import org.openstreetmap.josm.plugins.piclayer.actions.GenericPicTransformAction;
import org.openstreetmap.josm.tools.ImageProvider;
/**
* This class handles the input during rotating the picture.
*/
@SuppressWarnings("serial")
public class RotatePictureAction extends GenericPicTransformAction {
/**
* Constructor
*/
public RotatePictureAction(MapFrame frame) {
super(tr("PicLayer rotate"), tr("Rotated"), "rotate", tr("Drag to rotate the picture"),
frame, ImageProvider.getCursor("crosshair", null));
}
@Override
protected void doAction(MouseEvent e) {
Point2D center = new Point(Main.map.mapView.getWidth()/2, Main.map.mapView.getHeight()/2);
double alpha1 = Math.atan2(e.getY() - center.getY(), e.getX() - center.getX());
double alpha0 = Math.atan2(prevMousePoint.getY() - center.getY(), prevMousePoint.getX() - center.getX());
currentLayer.rotatePictureBy(alpha1 - alpha0);
}
}