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>

 * An ellipse is the finite or bounded case of a conic section, 

 * the geometric shape that results from cutting a circular conical 

 * or cylindrical surface with an oblique plane (the other two cases being 

 * the parabola and the hyperbola). It is also the locus of all points of 

 * the plane whose distances to two fixed points add to the same constant.

 * </p>

 * @see <a href="http://en.wikipedia.org/wiki/Ellipse">Full definition from Wikipedia</a>

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

 */

public interface Ellipse extends Surface {

        /**

         * Sets the values to define a ellipse.

         * @param axis1Start

         * The point where the first axis starts.

         * @param axis1End

         * The point where the first axis ends.

         * @param axis2Length

         * The length of the second axis.

         */

        void setPoints(Point axis1Start, Point axis1End, double axis2Length);        

        /**

         * Returns the point where the first axis starts.

         * @return

         * The point where the first axis starts.

         */

        Point getAxis1Start();

        /**

         * Returns the point where the first axis ends.

         * @return

         * The point where the first axis ends.

         */

        Point getAxis1End();

        /**

         * Returns the length of the second axis.

         * @return

         * The length of the second axis.

         */

        double getAxis2Dist();

}