Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 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 3

 * 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.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();

}