01: //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/trunk/src/org/deegree/model/spatialschema/Ring.java $
02: /*---------------- FILE HEADER ------------------------------------------
03:
04: This file is part of deegree.
05: Copyright (C) 2001-2008 by:
06: EXSE, Department of Geography, University of Bonn
07: http://www.giub.uni-bonn.de/deegree/
08: lat/lon GmbH
09: http://www.lat-lon.de
10:
11: This library is free software; you can redistribute it and/or
12: modify it under the terms of the GNU Lesser General Public
13: License as published by the Free Software Foundation; either
14: version 2.1 of the License, or (at your option) any later version.
15:
16: This library is distributed in the hope that it will be useful,
17: but WITHOUT ANY WARRANTY; without even the implied warranty of
18: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19: Lesser General Public License for more details.
20:
21: You should have received a copy of the GNU Lesser General Public
22: License along with this library; if not, write to the Free Software
23: Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24:
25: Contact:
26:
27: Andreas Poth
28: lat/lon GmbH
29: Aennchenstr. 19
30: 53115 Bonn
31: Germany
32: E-Mail: poth@lat-lon.de
33:
34: Prof. Dr. Klaus Greve
35: Department of Geography
36: University of Bonn
37: Meckenheimer Allee 166
38: 53115 Bonn
39: Germany
40: E-Mail: greve@giub.uni-bonn.de
41:
42:
43: ---------------------------------------------------------------------------*/
44: package org.deegree.model.spatialschema;
45:
46: /**
47: *
48: *
49: *
50: * @author <a href="mailto:poth@lat-lon.de">Andreas Poth</a>
51: * @author last edited by: $Author: mschneider $
52: *
53: * @version $Revision: 10547 $, $Date: 2008-03-11 01:40:28 -0700 (Tue, 11 Mar 2008) $
54: */
55: public interface Ring extends OrientableCurve {
56:
57: /**
58: * @return true because a ring is always a cycle
59: */
60: public boolean isCycle();
61:
62: /**
63: * @return true because a ring is always a simple
64: */
65: public boolean isSimple();
66:
67: /**
68: * @return all positions the builds the ring
69: */
70: public Position[] getPositions();
71:
72: /**
73: * @return the ring as an instance of <tt>CurveSegment</tt>
74: */
75: public CurveSegment getAsCurveSegment() throws GeometryException;
76:
77: /**
78: *
79: * @return CurveSegments a Ring is build from
80: */
81: public CurveSegment[] getCurveSegments();
82: }
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