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.geom;
34:
35: import java.util.*;
36:
37: import com.vividsolutions.jts.geom.Coordinate;
38:
39: /**
40: * A CoordinateList is a list of Coordinates.
41: * It prevents duplicate consecutive coordinates from appearing in the list.
42: */
43: public class CoordinateList extends ArrayList {
44: private final static Coordinate[] coordArrayType = new Coordinate[0];
45:
46: //List coordList = new ArrayList();
47: public CoordinateList() {
48: }
49:
50: public Coordinate getCoordinate(int i) {
51: return (Coordinate) get(i);
52: }
53:
54: public boolean add(Object obj) {
55: add((Coordinate) obj);
56:
57: return true;
58: }
59:
60: public void add(Coordinate coord) {
61: // don't add duplicate coordinates
62: if (size() >= 1) {
63: Coordinate last = (Coordinate) get(size() - 1);
64:
65: if (last.equals(coord)) {
66: return;
67: }
68: }
69:
70: super .add(coord);
71: }
72:
73: public boolean addAll(Collection coll) {
74: boolean isChanged = false;
75:
76: for (Iterator i = coll.iterator(); i.hasNext();) {
77: add((Coordinate) i.next());
78: isChanged = true;
79: }
80:
81: return isChanged;
82: }
83:
84: /**
85: * Ensure this coordList is a ring, by adding the start point if necessary
86: */
87: public void closeRing() {
88: if (size() > 0) {
89: add(get(0));
90: }
91: }
92:
93: public Coordinate[] toCoordinateArray() {
94: return (Coordinate[]) toArray(coordArrayType);
95: }
96: }
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