01: /*
02: * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
03: * for visualizing and manipulating spatial features with geometry and attributes.
04: *
05: * Copyright (C) 2003 Vivid Solutions
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: *
21: * For more information, contact:
22: *
23: * Vivid Solutions
24: * Suite #1A
25: * 2328 Government Street
26: * Victoria BC V8T 5G5
27: * Canada
28: *
29: * (250)385-6040
30: * www.vividsolutions.com
31: */
32:
33: package com.vividsolutions.jump.warp;
34:
35: import java.util.Iterator;
36:
37: import com.vividsolutions.jts.geom.Coordinate;
38: import com.vividsolutions.jts.geom.CoordinateFilter;
39: import com.vividsolutions.jts.geom.Geometry;
40: import com.vividsolutions.jump.JUMPException;
41: import com.vividsolutions.jump.feature.Feature;
42: import com.vividsolutions.jump.feature.FeatureCollection;
43: import com.vividsolutions.jump.feature.FeatureDataset;
44:
45: /**
46: * A function that maps one Coordinate to another.
47: */
48: public abstract class CoordinateTransform {
49: private CoordinateFilter coordinateFilter = new CoordinateFilter() {
50: public void filter(Coordinate coordinate) {
51: coordinate.setCoordinate(transform(coordinate));
52: }
53: };
54:
55: /**
56: * Maps one Coordinate to another.
57: * @param c the Coordinate to map
58: * @return a new Coordinate
59: */
60: public abstract Coordinate transform(Coordinate c);
61:
62: public FeatureCollection transform(
63: FeatureCollection featureCollection) throws JUMPException {
64: FeatureCollection newCollection = new FeatureDataset(
65: featureCollection.getFeatureSchema());
66:
67: for (Iterator i = featureCollection.iterator(); i.hasNext();) {
68: Feature feature = (Feature) i.next();
69: Geometry newGeometry = transform(feature.getGeometry());
70: Feature newFeature = (Feature) feature.clone(false);
71: newFeature.setGeometry(newGeometry);
72: newCollection.add(newFeature);
73: }
74:
75: return newCollection;
76: }
77:
78: public Geometry transform(Geometry oldGeometry) {
79: Geometry newGeometry = (Geometry) oldGeometry.clone();
80: newGeometry.apply(coordinateFilter);
81: newGeometry.geometryChanged();
82:
83: return newGeometry;
84: }
85: }
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