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.Point2D;
29 import javafx.geometry.Point3D;
30 import static org.junit.Assert.assertEquals;
31 import static org.junit.Assert.assertFalse;
32 import static org.junit.Assert.assertNotNull;
33 import static org.junit.Assert.assertTrue;
34
35 import org.junit.Test;
36
37 public class Point2DTest {
38
39 @Test
40 public void testConstruction() {
41 Point2D p = new Point2D(1f, 2f);
42 assertEquals(1f, p.getX(), 1e-100);
43 assertEquals(2f, p.getY(), 1e-100);
44 }
45
46 @Test
47 public void testDistance() {
48 Point2D p1 = new Point2D(0, 0);
49 Point2D p2 = new Point2D(1, 0);
50 Point2D p3 = new Point2D(1, 1);
51
52 assertEquals(1, p2.distance(p1), 1e-100);
53 assertEquals(1, p2.distance(0, 0), 1e-100);
54 assertEquals(1, p2.distance(p3), 1e-100);
55 assertEquals(1.41421356, p1.distance(p3), 1e-5);
56 }
57
58 @Test
59 public void testEquals() {
60 Point2D p1 = new Point2D(0, 0);
61 Point2D p2 = new Point2D(0, 1);
62 Point2D p3 = new Point2D(1, 0);
63
64 assertTrue(p1.equals(p1));
65 assertTrue(p1.equals(new Point2D(0, 0)));
66 assertFalse(p1.equals(new Object()));
67 assertFalse(p1.equals(p2));
68 assertFalse(p1.equals(p3));
69 }
70
71 @Test
72 public void testHash() {
73 Point2D p1 = new Point2D(0, 0);
74 Point2D p2 = new Point2D(0, 1);
75 Point2D p3 = new Point2D(0, 1);
76
77 assertEquals(p3.hashCode(), p2.hashCode());
78 assertEquals(p3.hashCode(), p2.hashCode());
79 assertFalse(p1.hashCode() == p2.hashCode());
80 }
81
82 @Test
83 public void testAdd() {
84 Point2D p1 = new Point2D(2, 4);
85 Point2D p2 = new Point2D(-1, 3);
86
87 assertEquals(new Point2D(1, 7), p1.add(p2));
88 assertEquals(new Point2D(1, 7), p1.add(-1, 3));
89 }
90
91 @Test(expected=NullPointerException.class)
92 public void testAddNull() {
93 Point2D point = new Point2D(1, 2);
94 point.add(null);
95 }
96
97 @Test
98 public void testSubtract() {
99 Point2D p1 = new Point2D(2, 4);
100 Point2D p2 = new Point2D(-1, 3);
101
102 assertEquals(new Point2D(3, 1), p1.subtract(p2));
103 assertEquals(new Point2D(3, 1), p1.subtract(-1, 3));
104 }
105
106 @Test(expected=NullPointerException.class)
107 public void testSubtractNull() {
108 Point2D point = new Point2D(1, 2);
109 point.subtract(null);
110 }
111
112 @Test
113 public void testMultiplyByNumber() {
114 Point2D p1 = new Point2D(2, 4);
115 Point2D p2 = new Point2D(-1, 3);
116
117 assertEquals(new Point2D(4, 8), p1.multiply(2));
118 assertEquals(new Point2D(1, -3), p2.multiply(-1));
119 assertEquals(new Point2D(0, 0), p1.multiply(0));
120 }
121
122 @Test
123 public void testNormalize() {
124 Point2D p1 = new Point2D(0, 0);
125 Point2D p2 = new Point2D(0, 1);
126 Point2D p3 = new Point2D(1, 1);
127 Point2D p4 = new Point2D(120, -350);
128
129 double sqrt3 = Math.sqrt(2);
130 double sqrt4 = Math.sqrt(136900);
131
132 assertEquals(new Point2D(0, 0), p1.normalize());
133 assertEquals(new Point2D(0, 1), p2.normalize());
134 assertEquals(new Point2D(1 / sqrt3, 1 / sqrt3), p3.normalize());
135 assertEquals(new Point2D(120 / sqrt4, -350 / sqrt4), p4.normalize());
136 }
137
138 @Test
139 public void testMidpoint() {
140 Point2D p1 = new Point2D(0, 0);
141 Point2D p2 = new Point2D(1, -2);
142
143 assertEquals(new Point2D(0.5, -1), p1.midpoint(p2));
144 assertEquals(new Point2D(0.5, -1), p1.midpoint(1, -2));
145 }
146
147 @Test(expected=NullPointerException.class)
148 public void testMidpointNull() {
149 Point2D point = new Point2D(1, 2);
150 point.midpoint(null);
151 }
152
153 @Test
154 public void testVectorAngle() {
155 Point2D p1 = new Point2D(0, 0);
156 Point2D p2 = new Point2D(0, 1);
157 Point2D p3 = new Point2D(1, 1);
158 Point2D p4 = new Point2D(-1, 0);
159 Point2D p5 = new Point2D(10, 10);
160
161 assertEquals(Double.NaN, p1.angle(p2), 0.000001);
162 assertEquals(0, p3.angle(p5), 0.000001);
163 assertEquals(0, p3.angle(p3), 0.000001);
164 assertEquals(45, p2.angle(p3), 0.000001);
165 assertEquals(90, p2.angle(p4), 0.000001);
166 assertEquals(135, p2.angle(-1, -1), 0.000001);
167 assertEquals(Double.NaN, p2.angle(p2, p4), 0.000001);
168 }
169
170 @Test(expected=NullPointerException.class)
171 public void testVectorAngleNull() {
172 Point2D point = new Point2D(1, 2);
173 point.angle(null);
174 }
175
176 @Test
177 public void testPointAngle() {
178 Point2D p1 = new Point2D(2, 2);
179 Point2D p2 = new Point2D(0, 2);
180 Point2D p3 = new Point2D(-3, 2);
181 Point2D p4 = new Point2D(-7, 2);
182 Point2D p5 = new Point2D(-3, 4);
183 Point2D p6 = new Point2D(-5, 2);
184
185 assertEquals(180, p2.angle(p1, p3), 0.000001);
186 assertEquals(90, p3.angle(p5, p6), 0.000001);
187 assertEquals(0, p2.angle(p3, p4), 0.000001);
188 }
189
190 @Test(expected=NullPointerException.class)
191 public void testPointAngle1Null() {
192 Point2D point = new Point2D(1, 2);
193 point.angle(null, new Point2D(2, 8));
194 }
195
196 @Test(expected=NullPointerException.class)
197 public void testPointAngle2Null() {
198 Point2D point = new Point2D(2, 3);
199 point.angle(new Point2D(5, 3), null);
200 }
201
202 @Test
203 public void testPointAngleTooClose() {
204 Point2D p1 = new Point2D(-0.8944271909999159, 0.4472135954999579);
205 Point2D v = new Point2D(0.0, 0.0);
206 Point2D p2 = new Point2D(-0.894427190999924, 0.4472135954999417);
207 assertEquals(0.0, v.angle(p1, p2), 0.000001);
208 assertEquals(0.0, v.angle(p2, p1), 0.000001);
209 }
210
211 @Test
212 public void testPointAngleTooOpposite() {
213 Point2D p1 = new Point2D(-0.8944271909999159, 0.4472135954999579);
214 Point2D v = new Point2D(0.0, 0.0);
215 Point2D p2 = new Point2D(0.894427190999924, -0.4472135954999417);
216 assertEquals(180.0, v.angle(p1, p2), 0.000001);
217 assertEquals(180.0, v.angle(p2, p1), 0.000001);
218 }
219
220 @Test
221 public void testMagnitude() {
222 Point2D p1 = new Point2D(0, 0);
223 Point2D p2 = new Point2D(0, 1);
224 Point2D p3 = new Point2D(-10, 20);
225
226 assertEquals(0, p1.magnitude(), 0.000001);
227 assertEquals(1, p2.magnitude(), 0.000001);
228 assertEquals(Math.sqrt(500), p3.magnitude(), 0.000001);
229 }
230
231 @Test
232 public void testDotProduct() {
233 Point2D p1 = new Point2D(0, 0);
234 Point2D p2 = new Point2D(1, 1);
235 Point2D p3 = new Point2D(2, -2);
236 Point2D p4 = new Point2D(-4, 5);
237
238 assertEquals(0, p1.dotProduct(p4), 0.000001);
239 assertEquals(1, p2.dotProduct(p4), 0.000001);
240 assertEquals(-18, p3.dotProduct(p4), 0.000001);
241 assertEquals(2, p3.dotProduct(-4, -5), 0.000001);
242 }
243
244 @Test(expected=NullPointerException.class)
245 public void testDotProductNull() {
246 Point2D point = new Point2D(1, 2);
247 point.dotProduct(null);
248 }
249
250 @Test
251 public void testCrossProduct() {
252 Point2D p1 = new Point2D(0, 0);
253 Point2D p2 = new Point2D(0, 3);
254 Point2D p3 = new Point2D(2, 0);
255
256 assertEquals(new Point3D(0, 0, 0), p1.crossProduct(p3));
257 assertEquals(new Point3D(0, 0, 0), p2.crossProduct(p1));
258 assertEquals(new Point3D(0, 0, -6), p2.crossProduct(p3));
259 assertEquals(new Point3D(0, 0, 6), p3.crossProduct(p2));
260 }
261
262 @Test(expected=NullPointerException.class)
263 public void testCrossProductNull() {
264 Point2D point = new Point2D(1, 2);
265 point.crossProduct(null);
266 }
267
268 @Test
269 public void testAngleTooClose() {
270 Point2D p1 = new Point2D(-0.8944271909999159, 0.4472135954999579);
271 Point2D p2 = new Point2D(-0.894427190999924, 0.4472135954999417);
272 assertEquals(0.0, p1.angle(p2), 0.000001);
273 assertEquals(0.0, p2.angle(p1), 0.000001);
274 }
275
276 @Test
277 public void testAngleTooOpposite() {
278 Point2D p1 = new Point2D(-0.8944271909999159, 0.4472135954999579);
279 Point2D p2 = new Point2D(0.894427190999924, -0.4472135954999417);
280 assertEquals(180.0, p1.angle(p2), 0.000001);
281 assertEquals(180.0, p2.angle(p1), 0.000001);
282 }
283
284 @Test
285 public void testToString() {
286 Point2D p1 = new Point2D(0, 0);
287 assertNotNull(p1.toString());
288 }
289 }