Application: gvSIG desktop » gvSIG 3D

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright © 2007-2016 gvSIG Association

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.view3d.lib.api.layers;

import java.awt.Color;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.crs.CRSFactory;

import gov.nasa.worldwind.layers.RenderableLayer;

/**

 * Abstract class for nww vector layers that are {@link RenderableLayer}s. 

 * 

 * @author Andrea Antonello    andrea.antonello@gmail.com

 */

public abstract class NwwVectorLayer extends RenderableLayer {

    private IProjection nwwPrj;

    public abstract void updateLegend( );

    /**

     * Get the projection for NWW.

     * 

     * @return the NWW prj.

     */

    public IProjection getNwwPrj() {

        if (nwwPrj == null)

            nwwPrj = CRSFactory.getCRS("EPSG:4326");

        return nwwPrj;

    }

    /**

     * Slightly darken the supplied color.

     * 

     * @param color the color to make darker.

     * @return the darker color.

     */

    protected Color darkenColor( Color color ) {

        float factor = 0.8f;

        int r = color.getRed();

        int g = color.getGreen();

        int b = color.getBlue();

        Color sideFillColor = new Color(Math.max((int) (r * factor), 0), Math.max((int) (g * factor), 0),

                Math.max((int) (b * factor), 0));

        return sideFillColor;

    }

}