1 /*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package test.javafx.geometry;
27
28 import javafx.geometry.Point3D;
29 import static org.junit.Assert.assertEquals;
30 import static org.junit.Assert.assertFalse;
31 import static org.junit.Assert.assertNotNull;
32 import static org.junit.Assert.assertTrue;
33
34 import org.junit.Test;
35
36 public class Point3DTest {
37
38 @Test
39 public void testDistance() {
40 Point3D p1 = new Point3D(0, 0, 0);
41 Point3D p2 = new Point3D(1, 0, 0);
42 Point3D p3 = new Point3D(1, 1, 1);
43
44 assertEquals(1, p2.distance(p1), 1e-100);
45 assertEquals(1, p2.distance(0, 0, 0), 1e-100);
46 assertEquals(1.41421356, p2.distance(p3), 1e-5);
47 assertEquals(1.7320508, p1.distance(p3), 1e-5);
48 assertEquals(1.7320508, p1.distance(1, 1, 1), 1e-5);
49 }
50
51 @Test
52 public void testEquals() {
53 Point3D p1 = new Point3D(0, 0, 0);
54 Point3D p2 = new Point3D(0, 1, 0);
55 Point3D p3 = new Point3D(1, 0, 1);
56 Point3D p4 = new Point3D(1, 0, 0);
57
58 assertTrue(p1.equals(p1));
59 assertTrue(p1.equals(new Point3D(0, 0, 0)));
60 assertFalse(p1.equals(new Object()));
61 assertFalse(p1.equals(p2));
62 assertFalse(p1.equals(p3));
63 assertFalse(p3.equals(p4));
64 }
65
66 @Test
67 public void testHash() {
68 Point3D p1 = new Point3D(0, 0, 0);
69 Point3D p2 = new Point3D(0, 1, 0);
70 Point3D p3 = new Point3D(0, 1, 0);
71
72 assertEquals(p3.hashCode(), p2.hashCode());
73 assertFalse(p1.hashCode() == p2.hashCode());
74 }
75
76 @Test
77 public void testAdd() {
78 Point3D p1 = new Point3D(2, 4, 8);
79 Point3D p2 = new Point3D(-1, 3, 5);
80
81 assertEquals(new Point3D(1, 7, 13), p1.add(p2));
82 assertEquals(new Point3D(1, 7, 13), p1.add(-1, 3, 5));
83 }
84
85 @Test(expected=NullPointerException.class)
86 public void testAddNull() {
87 Point3D point = new Point3D(1, 2, 3);
88 point.add(null);
89 }
90
91 @Test
92 public void testSubtract() {
93 Point3D p1 = new Point3D(2, 4, 8);
94 Point3D p2 = new Point3D(-1, 3, 6);
95
96 assertEquals(new Point3D(3, 1, 2), p1.subtract(p2));
97 assertEquals(new Point3D(3, 1, 2), p1.subtract(-1, 3, 6));
98 }
99
100 @Test(expected=NullPointerException.class)
101 public void testSubtractNull() {
102 Point3D point = new Point3D(1, 2, 3);
103 point.subtract(null);
104 }
105
106 @Test
107 public void testMultiplyByNumber() {
108 Point3D p1 = new Point3D(2, 4, 8);
109 Point3D p2 = new Point3D(-1, 3, 6);
110
111 assertEquals(new Point3D(4, 8, 16), p1.multiply(2));
112 assertEquals(new Point3D(1, -3, -6), p2.multiply(-1));
113 assertEquals(new Point3D(0, 0, 0), p1.multiply(0));
114 }
115
116 @Test
117 public void testNormalize() {
118 Point3D p1 = new Point3D(0, 0, 0);
119 Point3D p2 = new Point3D(0, 0, 1);
120 Point3D p3 = new Point3D(1, 1, 1);
121 Point3D p4 = new Point3D(120, -350, 430);
122
123 double sqrt3 = Math.sqrt(3);
124 double sqrt4 = Math.sqrt(321800);
125
126 assertEquals(new Point3D(0, 0, 0), p1.normalize());
127 assertEquals(new Point3D(0, 0, 1), p2.normalize());
128 assertEquals(new Point3D(1 / sqrt3, 1 / sqrt3, 1 /sqrt3), p3.normalize());
129 assertEquals(new Point3D(120 / sqrt4, -350 / sqrt4, 430 / sqrt4), p4.normalize());
130 }
131
132 @Test
133 public void testMidpoint() {
134 Point3D p1 = new Point3D(0, 0, 0);
135 Point3D p2 = new Point3D(1, -2, 3);
136
137 assertEquals(new Point3D(0.5, -1, 1.5), p1.midpoint(p2));
138 assertEquals(new Point3D(0.5, -1, 1.5), p1.midpoint(1, -2, 3));
139 }
140
141 @Test(expected=NullPointerException.class)
142 public void testMidpointNull() {
143 Point3D point = new Point3D(1, 2, 3);
144 point.midpoint(null);
145 }
146
147 @Test
148 public void testVectorAngle() {
149 Point3D p1 = new Point3D(0, 0, 0);
150 Point3D p2 = new Point3D(0, 0, 1);
151 Point3D p3 = new Point3D(0, 1, 1);
152 Point3D p4 = new Point3D(-1, 0, 1);
153 Point3D p5 = new Point3D(0, 1, 1);
154
155 assertEquals(Double.NaN, p1.angle(p2), 0.000001);
156 assertEquals(0, p3.angle(p3), 0.000001);
157 assertEquals(0, p3.angle(p5), 0.000001);
158 assertEquals(45, p2.angle(p3), 0.000001);
159 assertEquals(45, p2.angle(p4), 0.000001);
160 assertEquals(135, p2.angle(-1, 0, -1), 0.000001);
161 }
162
163 @Test(expected=NullPointerException.class)
164 public void testVectorAngleNull() {
165 Point3D point = new Point3D(1, 2, 3);
166 point.angle(null);
167 }
168
169 @Test
170 public void testVectorAngleTooClose() {
171 Point3D p1 = new Point3D(-0.8944271909999159, 0.0, 0.4472135954999579);
172 Point3D p2 = new Point3D(-0.894427190999924, 4.061090000458082E-14, 0.4472135954999417);
173 assertEquals(0.0, p1.angle(p2), 0.000001);
174 assertEquals(0.0, p2.angle(p1), 0.000001);
175 }
176
177 @Test
178 public void testVectorAngleTooOpposite() {
179 Point3D p1 = new Point3D(-0.8944271909999159, 0.0, 0.4472135954999579);
180 Point3D p2 = new Point3D(0.894427190999924, -4.061090000458082E-14, -0.4472135954999417);
181 assertEquals(180.0, p1.angle(p2), 0.000001);
182 assertEquals(180.0, p2.angle(p1), 0.000001);
183 }
184
185 @Test
186 public void testPointAngle() {
187 Point3D p1 = new Point3D(2, 2, 2);
188 Point3D p2 = new Point3D(0, 2, 0);
189 Point3D p3 = new Point3D(-3, 2, -3);
190 Point3D p4 = new Point3D(-7, 2, -7);
191 Point3D p5 = new Point3D(-3, 4, -3);
192 Point3D p6 = new Point3D(-3, 2, -10);
193
194 assertEquals(180, p2.angle(p1, p3), 0.000001);
195 assertEquals(90, p3.angle(p5, p6), 0.000001);
196 assertEquals(0, p2.angle(p3, p4), 0.000001);
197 assertEquals(Double.NaN, p2.angle(p2, p4), 0.000001);
198 }
199
200 @Test(expected=NullPointerException.class)
201 public void testPointAngle1Null() {
202 Point3D point = new Point3D(1, 2, 3);
203 point.angle(null, new Point3D(2, 8, 4));
204 }
205
206 @Test(expected=NullPointerException.class)
207 public void testPointAngle2Null() {
208 Point3D point = new Point3D(1, 2, 3);
209 point.angle(new Point3D(8, 5, 3), null);
210 }
211
212 @Test
213 public void testPointAngleTooClose() {
214 Point3D p1 = new Point3D(-0.8944271909999159, 0.0, 0.4472135954999579);
215 Point3D v = new Point3D(0.0, 0.0, 0.0);
216 Point3D p2 = new Point3D(-0.894427190999924, 4.061090000458082E-14, 0.4472135954999417);
217 assertEquals(0.0, v.angle(p1, p2), 0.000001);
218 assertEquals(0.0, v.angle(p2, p1), 0.000001);
219 }
220
221 @Test
222 public void testPointAngleTooOpposite() {
223 Point3D p1 = new Point3D(-0.8944271909999159, 0.0, 0.4472135954999579);
224 Point3D v = new Point3D(0.0, 0.0, 0.0);
225 Point3D p2 = new Point3D(0.894427190999924, -4.061090000458082E-14, -0.4472135954999417);
226 assertEquals(180.0, v.angle(p1, p2), 0.000001);
227 assertEquals(180.0, v.angle(p2, p1), 0.000001);
228 }
229
230 @Test
231 public void testMagnitude() {
232 Point3D p1 = new Point3D(0, 0, 0);
233 Point3D p2 = new Point3D(0, 1, 0);
234 Point3D p3 = new Point3D(1, -10, 20);
235
236 assertEquals(0, p1.magnitude(), 0.000001);
237 assertEquals(1, p2.magnitude(), 0.000001);
238 assertEquals(Math.sqrt(501), p3.magnitude(), 0.000001);
239 }
240
241 @Test
242 public void testDotProduct() {
243 Point3D p1 = new Point3D(0, 0, 0);
244 Point3D p2 = new Point3D(1, 1, 1);
245 Point3D p3 = new Point3D(2, -2, 3);
246 Point3D p4 = new Point3D(-4, 5, 6);
247
248 assertEquals(0, p1.dotProduct(p4), 0.000001);
249 assertEquals(7, p2.dotProduct(p4), 0.000001);
250 assertEquals(0, p3.dotProduct(p4), 0.000001);
251 assertEquals(20, p3.dotProduct(-4, -5, 6), 0.000001);
252 }
253
254 @Test(expected=NullPointerException.class)
255 public void testDotProductNull() {
256 Point3D point = new Point3D(1, 2, 3);
257 point.dotProduct(null);
258 }
259
260 @Test
261 public void testCrossProduct() {
262 Point3D p1 = new Point3D(0, 0, 0);
263 Point3D p2 = new Point3D(0, 0, 3);
264 Point3D p3 = new Point3D(0, 2, 0);
265
266 assertEquals(new Point3D(0, 0, 0), p1.crossProduct(p3));
267 assertEquals(new Point3D(0, 0, 0), p2.crossProduct(p1));
268 assertEquals(new Point3D(-6, 0, 0), p2.crossProduct(p3));
269 assertEquals(new Point3D(6, 0, 0), p3.crossProduct(p2));
270 }
271
272 @Test(expected=NullPointerException.class)
273 public void testCrossProductNull() {
274 Point3D point = new Point3D(1, 2, 3);
275 point.crossProduct(null);
276 }
277
278 @Test
279 public void testToString() {
280 Point3D p1 = new Point3D(0, 0, 0);
281 assertNotNull(p1.toString());
282 }
283 }