nl.cloudfarming.client.geoviewer.jxmap.render.JXMapGeoTranslator Maven / Gradle / Ivy

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AgroSense geoviewer JXMap implementation. Contains a map/geoviewer TopComponent based on the JXMap classes from swingx.

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/**
 * Copyright (C) 2008-2012 AgroSense Foundation.
 *
 * AgroSense 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.
 *
 * There are special exceptions to the terms and conditions of the GPLv3 as it is applied to
 * this software, see the FLOSS License Exception
 * .
 *
 * AgroSense 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 AgroSense.  If not, see .
 */
package nl.cloudfarming.client.geoviewer.jxmap.render;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import java.awt.Rectangle;
import java.awt.geom.Point2D;
import nl.cloudfarming.client.geoviewer.render.GeoTranslator;
import org.jdesktop.swingx.JXMapViewer;
import org.jdesktop.swingx.mapviewer.GeoPosition;

/**
 * JXMap implementation to translate geo to pixel and visa versa
 * @author Merijn Zengers
 */
public class JXMapGeoTranslator implements GeoTranslator{

    private final JXMapViewer mapViewer;

    public JXMapGeoTranslator(JXMapViewer mapViewer) {
        this.mapViewer = mapViewer;
    }
    
    
    /**
     * Translate Coordinate to pixel
     * @param canvas mapviewer is used instead, should be null
     * @param boundingBox mapviewer is used instead, should be null
     * @param coordinate coordinate to translate for current map position
     * @return the translated pixel
     */
    @Override
    public Point2D geoToPixel(Rectangle canvas, Geometry boundingBox, Coordinate coordinate) {
        GeoPosition geopoint = new GeoPosition(coordinate.y, coordinate.x);
        //convert from geo to world bitmap
        Point2D pt = mapViewer.getTileFactory().geoToPixel(geopoint, mapViewer.getZoom());
        //convert from world bitmap to local 
        Rectangle bounds = mapViewer.getViewportBounds();
        return new Point2D.Double(pt.getX() - bounds.getX(),pt.getY() - bounds.getY());
    }

    /**
     * Translate pixel to geoPosition
     * @param canvas mapviewer is used instead, should be null
     * @param boundingBox mapviewer is used instead, should be null
     * @param pixel the pixel to transform
     * @return the translated GeoPosition
     */
    @Override
    public GeoPosition pixelToGeo(Rectangle canvas, Geometry boundingBox, Point2D pixel) {
        Rectangle viewportBounds = mapViewer.getViewportBounds();
        int mapX = (int) (viewportBounds.getX() + pixel.getX());
        int mapY = (int) (viewportBounds.getY() + pixel.getY());
        Point2D newPoint = new java.awt.Point(mapX, mapY);
        GeoPosition geoPosition = mapViewer.getTileFactory().pixelToGeo(newPoint, mapViewer.getZoom());
        return geoPosition;
    }
    
}