1 package org.molwind.view;
2
3 /*
4 * This file is part of Molwind.
5 *
6 * Molwind is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * Molwind is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with Molwind. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 import java.util.Iterator;
21
22 import org.molwind.model.LayeredPosition;
23 import org.molwind.model.RelationshipResolver;
24
25 /**
26 * TopologyManager determines visible entities.
27 *
28 * @author <a href="mailto:oliver.karch@molwind.org">Oliver Karch</a>
29 * @version 1.0
30 */
31
32 public interface TopologyManager {
33
34 /**
35 * Determines the visible entities for the given position.
36 *
37 * @param position
38 * the position (longitude/latitude/level)
39 * @return
40 * an (possibly empty) iterator of entities
41 */
42 Iterator getVisibleEntities(LayeredPosition position);
43
44 /**
45 * Set the EntityIterator value.
46 *
47 * @param newEntityIterator
48 * the new EntityIterator value
49 */
50 public void setEntityIterator( Iterator newEntityIterator );
51
52 /**
53 * Set the RelationshipResolver value.
54 *
55 * @param newRelationshipResolver
56 * the new RelationshipResolver value
57 */
58 public void setRelationshipResolver( RelationshipResolver newRelationshipResolver);
59
60 }