org.jxmapviewer.VirtualEarthTileFactoryInfo Maven / Gradle / Ivy

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package org.jxmapviewer;

import org.jxmapviewer.viewer.TileFactoryInfo;

/*******************************************************************************
 * http://www.viavirtualearth.com/vve/Articles/RollYourOwnTileServer.ashx
 * @author Fabrizio Giudici
 * @version $Id: MicrosoftVirtualEarthProvider.java 115 2007-11-08 22:04:36Z
 * fabriziogiudici $
 ********************************************************************************/
public class VirtualEarthTileFactoryInfo extends TileFactoryInfo
{
    /**
     * Use road map
     */
    public final static MVEMode MAP = new MVEMode("map", "map", "r", ".png");

    /**
     * Use satellite map
     */
    public final static MVEMode SATELLITE = new MVEMode("satellite", "satellite", "a", ".jpeg");

    /**
     * Use hybrid map
     */
    public final static MVEMode HYBRID = new MVEMode("hybrid", "hybrid", "h", ".jpeg");

    /**
     * The map mode
     */
    public static class MVEMode
    {
        private String type;
        private String ext;
        private String name;
        private String label;

        private MVEMode(final String name, final String label, final String type, final String ext)
        {
            this.type = type;
            this.ext = ext;
            this.name = name;
            this.label = label;
        }
    }

    private final static int TOP_ZOOM_LEVEL = 19;

    private final static int MAX_ZOOM_LEVEL = 17;

    private final static int MIN_ZOOM_LEVEL = 2;

    private final static int TILE_SIZE = 256;

    private MVEMode mode;

    /**
     * @param mode the mode
     */
    public VirtualEarthTileFactoryInfo(MVEMode mode)
    {
        super("Virtual Earth", MIN_ZOOM_LEVEL, MAX_ZOOM_LEVEL, TOP_ZOOM_LEVEL, TILE_SIZE, false, false, "", "", "", "");
        
        this.mode = mode;
    }

    /**
     * @return the name of the selected mode
     */
    public String getModeName()
    {
        return mode.name;
    }
    
    /**
     * @return the label of the selected mode
     */
    public String getModeLabel()
    {
        return mode.label;
    }
    
    @Override
    public String getTileUrl(final int x, final int y, final int zoom)
    {
        final String quad = tileToQuadKey(x, y, TOP_ZOOM_LEVEL - 0 - zoom);
        return "http://" + mode.type + quad.charAt(quad.length() - 1) + 
                ".ortho.tiles.virtualearth.net/tiles/"
                + mode.type + quad + mode.ext + "?g=1";
    }

    private String tileToQuadKey(final int tx, final int ty, final int zl)
    {
        String quad = "";

        for (int i = zl; i > 0; i--)
        {
            int mask = 1 << (i - 1);
            int cell = 0;

            if ((tx & mask) != 0)
            {
                cell++;
            }

            if ((ty & mask) != 0)
            {
                cell += 2;
            }

            quad += cell;
        }

        return quad;
    }
}