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/*

 *    GeoTools - OpenSource mapping toolkit

 *    http://geotools.org

 *    (C) 2006, GeoTools Project Managment Committee (PMC)

 *    

 *    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;

 *    version 2.1 of the License.

 *

 *    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.

 */

package org.gvsig.data.vectorial.filter.spatial;

import java.awt.geom.Rectangle2D;

import org.gvsig.data.vectorial.Feature;

import org.gvsig.fmap.geom.Geometry;

import org.opengis.filter.FilterFactory;

import org.opengis.filter.FilterVisitor;

import org.opengis.filter.expression.Expression;

import org.opengis.filter.expression.Literal;

import org.opengis.filter.expression.PropertyName;

import org.opengis.filter.spatial.BBOX;

/**

 * Returns true if the bbox of the geometry passed as expression intersects

 * the bbox passed as parameter

 * 

 * @author jcarras

 *

 */

public class BBOXImpl implements BBOX {

        double minx,miny,maxx,maxy;        

        Rectangle2D bbox;

        /**

         * Not currently used 

         */

        String srs; 

        Expression expression;

        public BBOXImpl(Expression e1, double minx, double miny, double maxx, double maxy, String srs) {

                expression = e1;

                this.minx = minx ;

                this.maxx = maxx;

                this.miny = miny;

                this.maxy = maxy;

                this.bbox=new Rectangle2D.Double(minx,miny,maxx-minx,maxy-miny);

                this.srs = srs;

        }

        public String getPropertyName() {

            if(expression instanceof PropertyName) {

            PropertyName propertyName = (PropertyName) expression;

            return propertyName.getPropertyName();

            } else {

                return null;

            }

        }

        public String getSRS() {

                return srs;

        }

        public double getMinX() {

                return minx;

        }

        public double getMinY() {

                return miny;

        }

        public double getMaxX() {

                return maxx;

        }

        public double getMaxY() {

                return maxy;

        }

        public boolean evaluate(Object feature) {

                Object value = expression.evaluate(feature);

                if (!(value instanceof Geometry))

                        return false;

                Geometry geom = (Geometry)value;

                return geom.intersects(bbox);

         // Note that this is a pretty permissive logic

         //  if the type has somehow been mis-set (can't happen externally)

         //  then true is returned in all cases

        }

        public Object accept(FilterVisitor visitor, Object extraData) {

                return visitor.visit(this,extraData);

        }

}