01: /*
02: * The JTS Topology Suite is a collection of Java classes that
03: * implement the fundamental operations required to validate a given
04: * geo-spatial data set to a known topological specification.
05: *
06: * Copyright (C) 2001 Vivid Solutions
07: *
08: * This library is free software; you can redistribute it and/or
09: * modify it under the terms of the GNU Lesser General Public
10: * License as published by the Free Software Foundation; either
11: * version 2.1 of the License, or (at your option) any later version.
12: *
13: * This library is distributed in the hope that it will be useful,
14: * but WITHOUT ANY WARRANTY; without even the implied warranty of
15: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16: * Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public
19: * License along with this library; if not, write to the Free Software
20: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21: *
22: * For more information, contact:
23: *
24: * Vivid Solutions
25: * Suite #1A
26: * 2328 Government Street
27: * Victoria BC V8T 5G5
28: * Canada
29: *
30: * (250)385-6040
31: * www.vividsolutions.com
32: */
33: package com.vividsolutions.jtsexample.geom;
34:
35: import com.vividsolutions.jts.geom.*;
36:
37: /**
38: * Creates ExtendedCoordinateSequenceFactory internally represented
39: * as an array of {@link ExtendedCoordinate}s.
40: *
41: * @version 1.7
42: */
43: public class ExtendedCoordinateSequenceFactory implements
44: CoordinateSequenceFactory {
45: private static ExtendedCoordinateSequenceFactory instance = new ExtendedCoordinateSequenceFactory();
46:
47: private ExtendedCoordinateSequenceFactory() {
48: }
49:
50: /**
51: * Returns the singleton instance of ExtendedCoordinateSequenceFactory
52: */
53: public static ExtendedCoordinateSequenceFactory instance() {
54: return instance;
55: }
56:
57: /**
58: * Returns an ExtendedCoordinateSequence based on the given array -- the array is used
59: * directly if it is an instance of ExtendedCoordinate[]; otherwise it is
60: * copied.
61: */
62: public CoordinateSequence create(Coordinate[] coordinates) {
63: return coordinates instanceof ExtendedCoordinate[] ? new ExtendedCoordinateSequence(
64: (ExtendedCoordinate[]) coordinates)
65: : new ExtendedCoordinateSequence(coordinates);
66: }
67:
68: public CoordinateSequence create(CoordinateSequence coordSeq) {
69: return coordSeq instanceof ExtendedCoordinateSequence ? new ExtendedCoordinateSequence(
70: (ExtendedCoordinateSequence) coordSeq)
71: : new ExtendedCoordinateSequence(coordSeq);
72: }
73:
74: /**
75: * @see com.vividsolutions.jts.geom.CoordinateSequenceFactory#create(int, int)
76: */
77: public CoordinateSequence create(int size, int dimension) {
78: return new ExtendedCoordinateSequence(size);
79: }
80:
81: }
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