Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2009 {Iver T.I.}   {Task}

 */

package org.gvsig.fmap.geom.primitive;

/**

 * <p>

 * This interface is equivalent to the GM_Circle specified in 

 * <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012">ISO 19107</a>.

 * Same as Arc, but closed to form a full circle. The "start" and "end" points are equal.

 * @see <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012">ISO 19107</a>

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>

 */

public interface Circle extends Surface {

        /**

         * Sets the two values to define a circle.

         * @param center

         * The center point of the circle.

         * @param radious

         * A point that is used to calculate the radius.

         */        

        void setPoints(Point center, Point radious);                

        /**

         * Sets the two values to define a circle.

         * @param center

         * The center point of the circle.

         * @param radious

         * The radius of the circle.

         */        

        void setPoints(Point center, double radious);        

        /**

         * Sets the values to define a circle from three points. The circle

         * will be inside or the area defined by the three points.

         * @param p1

         * First point

         * @param p2

         * Second point 

         * @param p3

         * Third point

         */

        void setPoints(Point p1, Point p2, Point p3);

        /**

         * Returns the center of the circle.

         * @return

         * The center of the circle.

         */

        Point getCenter();

        /**

         * Returns the radius of the circle

         * @return

         * The radius of the circle

         */

        double getRadious();

}