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.symbology;

import java.awt.geom.Point2D;

public interface PathLength {

    /**

     * Returns the slope of the path at the specified length.

     * @param length The length along the path

     * @return the angle in radians, in the range [-{@link Math#PI},

     *         {@link Math#PI}].

     */

    float angleAtLength(float length);

    /**

     * Returns the length of the path used by this PathLength object.

     * @return The length of the path.

     */

    float lengthOfPath();

    /**

     * Returns the point that is at the given length along the path.

     * @param length The length along the path

     * @return The point at the given length

     */

    Point2D pointAtLength(float length);

}