/*
* OSGeom -- Geometry Collab
*
* (C) 2009, Open Source Geospatial Foundation (OSGeo)
* (C) 2001-2009 Department of Geography, University of Bonn
* (C) 2001-2009 lat/lon GmbH
*
* 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.osgeo.geometry.primitive.segments;
import org.osgeo.commons.uom.Angle;
import org.osgeo.commons.uom.Measure;
import org.osgeo.commons.uom.Unit;
import org.osgeo.geometry.primitive.Point;
/**
* Circular {@link CurveSegment} that consists of a single arc only.
* <p>
* This variant of the arc requires that the points on the arc have to be computed instead of storing the coordinates
* directly. The control point is the center point of the arc plus the radius and the bearing at start and end. This
* representation can be used only in 2D.
*
* @author <a href="mailto:schneider@lat-lon.de">Markus Schneider </a>
* @author last edited by: $Author$
*
* @version $Revision$, $Date$
*/
public interface ArcByCenterPoint extends CurveSegment {
/**
* Returns the center point of the arc.
*
* @return the center point of the arc
*/
public Point getMidPoint();
/**
* Returns the radius of the arc.
*
* @param requestedUnits
* units that the radius should be expressed as
* @return the radius of the arc
*/
public Measure getRadius( Unit requestedUnits );
/**
* Returns the bearing of the arc at the start.
*
* @return the bearing of the arc at the start
*/
public Angle getStartAngle();
/**
* Returns the bearing of the arc at the end.
*
* @return the bearing of the arc at the end
*/
public Angle getEndAngle();
}