Source code: org/pqt/autorib/instr/InstrSixSnaps.java
1 //AutoRIB
2 // Copyright © 1998 - 2002, P W Quint
3 //
4 // Contact: autorib00@aol.com
5 //
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public
8 // License as published by the Free Software Foundation; either
9 // version 2 of the License, or (at your option) any later version.
10 //
11 // This library 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 GNU
14 // General Public License for more details.
15 //
16 // You should have received a copy of the GNU General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
20 package org.pqt.autorib.instr;
21
22 import java.awt.geom.Rectangle2D;
23 import java.io.*;
24 import java.util.*;
25
26 import org.pqt.autorib.tokenizer.*;
27 import org.pqt.autorib.globals.*;
28 import org.pqt.autorib.util.*;
29 import org.pqt.autorib.rib.*;
30
31 /**
32 * Handles the sixsnaps instruction which generates six views of a group of objects
33 * along the cardinal axes
34 */
35
36 public class InstrSixSnaps extends InstrRequest {
37
38 /** Lh to Rh transform */
39 protected static Matrix changeHandedness = new Matrix(-1f, -1f, -1f);
40
41 /** stores the names of objects to omit or include */
42 Vector omitVector = new Vector(5,5);
43
44 private static final Point offsets[] = { new Point(0f, 1f, 0f), new Point(0f, -1f, 0f),
45 new Point(0f, 0f, 1f), new Point(0f, 0f, -1f), new Point(1f, 0f, 0f),
46 new Point(-1f, 0f, 0f) };
47
48 private static final Point up[] = { new Point(0f, 0f, -1f), new Point(0f, 0f, -1f),
49 new Point(0f, 1f, 0f), new Point(0f, 1f, 0f), new Point(0f, 1f, 0f),
50 new Point(0f, 1f, 0f) };
51
52 private String names[] = { "top", "bottom", "front", "back", "left", "right" };
53
54 private InstrState state = null;
55
56 private float scale = 1f;
57
58 private int mapSize = 0;
59
60 private String rgba = null;
61
62 private int priority;
63
64 public InstrSixSnaps(InstrWReader in) throws IOException, FormatException {
65 read(in);
66 state = (InstrState) in.state.clone();
67 state.omitNames = omitVector;
68 }
69
70
71 /** read a call and store it
72 * @param in an InstrWReader object linked to the input file*/
73 public void read(InstrWReader in) throws IOException,
74 FormatException {
75 readRequestName(in);
76 rgba = in.tokenizer.getString();
77 scale = in.tokenizer.getNumber();
78 mapSize = (int) in.tokenizer.getNumber();
79 //we start by omitting everything
80 omitVector.add(new OmitRec("*", true));
81 int type = in.tokenizer.getToken();
82 while ((type == Token.STRING) || (type == Token.ARRAY)) {
83 if (type == Token.STRING)
84 omitVector.add(new OmitRec(in.tokenizer.token.stringVal, false));
85 else {
86 OmitRec.addOmitsFromVector(in.tokenizer.token.arrayVal, omitVector,
87 true);
88 }
89 type = in.tokenizer.getToken();
90 }
91 in.tokenizer.pushBack();
92 priority = in.tokenizer.lineno();
93 }
94
95 public void write(Writer out) throws IOException {
96 writeRequest(out);
97 Enumeration i = omitVector.elements();
98 while (i.hasMoreElements())
99 out.write(((OmitRec)i.nextElement()).toString());
100 }
101
102 public void process(RIBWReader rib)
103 throws FormatException, IOException {
104 Bounds3D bounds = rib.calculateWorldBounds(omitVector);
105 float radius = bounds.getRadius() * 1.5f;
106 Point to = bounds.getCentre();
107 Point from;
108 Matrix camera;
109 Bounds3D cameraBounds;
110 String baseName = rib.nameOut == null ? rib.nameIn : rib.nameOut;
111 int t = baseName.lastIndexOf('.');
112 if (t > 0)
113 baseName = baseName.substring(0,t);
114 if (!baseName.endsWith("_"))
115 baseName = baseName + '_';
116 String mapName;
117 float left, right, bottom, top, ratio;
118 int xres, yres;
119 for (int i = 0; i < offsets.length; i++) {
120 from = Point.add(to,Point.mult(offsets[i], radius));
121 camera = MakeMap.placeCamera(from, Point.subtract(to,from));
122 //camera.scale(1f, 1f, -1f);
123 camera.multiply(-1f);
124 cameraBounds = bounds.transform(Matrix.multiply(changeHandedness,camera));
125 //scale the bounds and then get them as a rectangle
126 Rectangle2D.Float rect = cameraBounds.scale(scale).getAsRectangle2D();
127 left = rect.x;
128 right = rect.x + rect.width;
129 bottom = rect.y;
130 top = rect.y + rect.height;
131 if (rect.height != 0)
132 ratio = rect.width / rect.height;
133 else
134 ratio = 1f;
135 if (ratio > 1) {
136 xres = mapSize;
137 yres = (int) (mapSize / ratio);
138 } else {
139 yres = mapSize;
140 xres = (int) (mapSize * ratio);
141 }
142 mapName = baseName + names[i];
143 rib.mapList.add(new InstrMapRec(rib, from, to,
144 up[i], rgba, xres, yres, left, right, bottom, top, state, mapName,
145 priority));
146 }
147 }
148 }
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