DeleteVertexDrawingPane.java

//$HeadURL$
/*----------------    FILE HEADER  ------------------------------------------
 This file is part of deegree.
 Copyright (C) 2001-2008 by:
 Department of Geography, University of Bonn
 http://www.giub.uni-bonn.de/deegree/
 lat/lon GmbH
 http://www.lat-lon.de

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 This library 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
 Lesser General Public License for more details.
 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 Contact:

 Andreas Poth
 lat/lon GmbH
 Aennchenstr. 19
 53177 Bonn
 Germany
 E-Mail: poth@lat-lon.de

 Prof. Dr. Klaus Greve
 Department of Geography
 University of Bonn
 Meckenheimer Allee 166
 53115 Bonn
 Germany
 E-Mail: greve@giub.uni-bonn.de
 ---------------------------------------------------------------------------*/

package org.deegree.igeo.views.swing.digitize;

import java.util.ArrayList;

import org.deegree.graphics.transformation.GeoTransform;
import org.deegree.igeo.ApplicationContainer;
import org.deegree.model.spatialschema.GeometryFactory;
import org.deegree.model.spatialschema.Point;

/**
 * 
 * 
 * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
 * @author last edited by: $Author$
 * 
 * @version. $Revision$, $Date$
 */
public class DeleteVertexDrawingPane extends MoveVertexDrawingPane {

    /**
     * @param appContainer
     */
    public DeleteVertexDrawingPane( ApplicationContainer<?> appContainer ) {
        super( appContainer );
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.deegree.igeo.views.DrawingPane#startDrawing(int, int)
     */
    public void startDrawing( int x, int y ) {
        if ( snapper != null ) {
            snapper.initSnapInfoList();
        }
        isDrawing = true;
        points = new ArrayList<Point>();
        GeoTransform gt = mapModel.getToTargetDeviceTransformation();
        double xx = gt.getSourceX( x );
        double yy = gt.getSourceY( y );
        Point p = GeometryFactory.createPoint( xx, yy, mapModel.getCoordinateSystem() );
        // set tolerance to defined value to find vertices to be moved
        tolerance = Math.abs( gt.getSourceX( 0 ) - gt.getSourceX( targetSize ) ) / 2d;
        p.setTolerance( tolerance );
        points.add( p );
        this.draw( x, y );
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.deegree.igeo.views.DrawingPane#stopDrawing(int, int)
     */
    public void stopDrawing( int x, int y ) {
        if ( snapper != null ) {
            java.awt.Point p = new java.awt.Point( x, y );
            p = snapper.snap( p );
            x = p.x;
            y = p.y;
        }
        GeoTransform gt = mapModel.getToTargetDeviceTransformation();
        double xx = gt.getSourceX( x );
        double yy = gt.getSourceY( y );
        Point p = GeometryFactory.createPoint( xx, yy, mapModel.getCoordinateSystem() );
        // set tolerance to defined value to find vertices to be moved
        p.setTolerance( tolerance );
        points.set( 0, p );
    }

}