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 com.vividsolutions.jts.geom.*;
36:
37: /**
38: * An AffineTransform applies an affine transforms to a JTS Geometry.
39: * The transform is done in-place. If the object must not be changed,
40: * it should be cloned and the transform applied to the clone.
41: *
42: * <b>NOTE: INCOMPLETE IMPLEMENTATION</b>
43: */
44: public class AffineTransform implements CoordinateFilter {
45: //There is an AffineTransform in the warp package. I wonder if it can be
46: //used instead of this class. [Jon Aquino]
47:
48: private Coordinate transPt = null;
49:
50: public AffineTransform() {
51: }
52:
53: /**
54: * Append a translation to the transform.
55: *
56: * @param p the vector to translate by
57: */
58: public void translate(Coordinate p) {
59: if (transPt == null) {
60: transPt = new Coordinate(p);
61: } else {
62: transPt.x += p.x;
63: transPt.y += p.y;
64: transPt.z += p.z;
65: }
66: }
67:
68: public void apply(Geometry g) {
69: g.apply(this );
70: }
71:
72: public void filter(Coordinate coord) {
73: coord.x += transPt.x;
74: coord.y += transPt.y;
75: coord.z += transPt.z;
76: }
77: }
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