source: josm/trunk/test/unit/org/openstreetmap/josm/gui/MapViewStateTest.java@ 13812

Last change on this file since 13812 was 12076, checked in by bastiK, 7 years ago

see #14740 - update test
  • Property svn:eol-style set to native
File size: 8.5 KB
Line 
1// License: GPL. For details, see LICENSE file.
2package org.openstreetmap.josm.gui;
3
4import static org.junit.Assert.assertEquals;
5
6import java.awt.geom.AffineTransform;
7import java.awt.geom.Point2D;
8import java.util.Arrays;
9import java.util.function.Function;
10
11import org.junit.Before;
12import org.junit.BeforeClass;
13import org.junit.Test;
14import org.openstreetmap.josm.JOSMFixture;
15import org.openstreetmap.josm.Main;
16import org.openstreetmap.josm.data.coor.EastNorth;
17import org.openstreetmap.josm.data.coor.LatLon;
18import org.openstreetmap.josm.gui.MapViewState.MapViewPoint;
19import org.openstreetmap.josm.gui.MapViewState.MapViewRectangle;
20
21/**
22 * Test {@link MapViewState}
23 * @author Michael Zangl
24 */
25public class MapViewStateTest {
26
27 private static final int WIDTH = 301;
28 private static final int HEIGHT = 200;
29 private MapViewState state;
30
31 /**
32 * Setup test.
33 */
34 @BeforeClass
35 public static void setUpBeforeClass() {
36 JOSMFixture.createUnitTestFixture().init();
37 }
38
39 /**
40 * Create the default state.
41 */
42 @Before
43 public void setUp() {
44 state = MapViewState.createDefaultState(WIDTH, HEIGHT);
45 }
46
47 private void doTestGetCenter(Function<MapViewState, MapViewPoint> getter, Function<Integer, Double> divider) {
48 MapViewPoint center = getter.apply(state);
49 assertHasViewCoords(divider.apply(WIDTH), divider.apply(HEIGHT), center);
50
51 MapViewState newState = state.movedTo(center, new EastNorth(3, 4));
52
53 // state should not change, but new state should.
54 center = getter.apply(state);
55 assertHasViewCoords(divider.apply(WIDTH), divider.apply(HEIGHT), center);
56
57 center = getter.apply(newState);
58 assertEquals("east", 3, center.getEastNorth().east(), 0.01);
59 assertEquals("north", 4, center.getEastNorth().north(), 0.01);
60 }
61
62 /**
63 * Test {@link MapViewState#getCenter()} returns map view center.
64 */
65 @Test
66 public void testGetCenter() {
67 doTestGetCenter(s -> s.getCenter(), t -> t / 2d);
68 }
69
70 private static void assertHasViewCoords(double x, double y, MapViewPoint center) {
71 assertEquals("x", x, center.getInViewX(), 0.01);
72 assertEquals("y", y, center.getInViewY(), 0.01);
73 assertEquals("x", x, center.getInView().getX(), 0.01);
74 assertEquals("y", y, center.getInView().getY(), 0.01);
75 }
76
77 /**
78 * Test {@link MapViewState#getForView(double, double)}
79 */
80 @Test
81 public void testGetForView() {
82 MapViewPoint corner = state.getForView(0, 0);
83 assertHasViewCoords(0, 0, corner);
84
85 MapViewPoint middle = state.getForView(120, 130);
86 assertHasViewCoords(120, 130, middle);
87
88 MapViewPoint fraction = state.getForView(0.12, 0.7);
89 assertHasViewCoords(0.12, 0.7, fraction);
90
91 MapViewPoint negative = state.getForView(-17, -30);
92 assertHasViewCoords(-17, -30, negative);
93 }
94
95 /**
96 * Test {@link MapViewState#getViewWidth()} and {@link MapViewState#getViewHeight()}
97 */
98 @Test
99 public void testGetViewSize() {
100 assertEquals(WIDTH, state.getViewWidth(), 0.01);
101 assertEquals(HEIGHT, state.getViewHeight(), 0.01);
102 }
103
104 /**
105 * Tests that all coordinate conversions for the point work.
106 */
107 @Test
108 public void testPointConversions() {
109 MapViewPoint p = state.getForView(WIDTH / 2d, HEIGHT / 2d);
110 assertHasViewCoords(WIDTH / 2d, HEIGHT / 2d, p);
111
112 EastNorth eastnorth = p.getEastNorth();
113 LatLon shouldLatLon = Main.getProjection().getWorldBoundsLatLon().getCenter();
114 EastNorth shouldEastNorth = Main.getProjection().latlon2eastNorth(shouldLatLon);
115 assertEquals("east", shouldEastNorth.east(), eastnorth.east(), 0.01);
116 assertEquals("north", shouldEastNorth.north(), eastnorth.north(), 0.01);
117 MapViewPoint reversed = state.getPointFor(shouldEastNorth);
118 assertHasViewCoords(WIDTH / 2d, HEIGHT / 2d, reversed);
119
120 LatLon latlon = p.getLatLon();
121 assertEquals("lat", shouldLatLon.lat(), latlon.lat(), 0.01);
122 assertEquals("lon", shouldLatLon.lon(), latlon.lon(), 0.01);
123
124 MapViewPoint p2 = state.getPointFor(new EastNorth(2, 3));
125 assertEquals("east", 2, p2.getEastNorth().east(), 0.01);
126 assertEquals("north", 3, p2.getEastNorth().north(), 0.01);
127 }
128
129 /**
130 * Test {@link MapViewState#getAffineTransform()}
131 */
132 @Test
133 public void testGetAffineTransform() {
134 for (EastNorth en : Arrays.asList(new EastNorth(100, 100), new EastNorth(0, 0), new EastNorth(300, 200),
135 new EastNorth(-1, -2.5))) {
136 MapViewPoint should = state.getPointFor(en);
137 AffineTransform transform = state.getAffineTransform();
138 Point2D result = transform.transform(new Point2D.Double(en.getX(), en.getY()), null);
139
140 assertEquals("x", should.getInViewX(), result.getX(), 0.01);
141 assertEquals("y", should.getInViewY(), result.getY(), 0.01);
142 }
143 }
144
145 /**
146 * Test {@link MapViewState#OUTSIDE_BOTTOM} and similar constants.
147 */
148 @Test
149 public void testOutsideFlags() {
150 assertEquals(1, Integer.bitCount(MapViewState.OUTSIDE_BOTTOM));
151 assertEquals(1, Integer.bitCount(MapViewState.OUTSIDE_TOP));
152 assertEquals(1, Integer.bitCount(MapViewState.OUTSIDE_LEFT));
153 assertEquals(1, Integer.bitCount(MapViewState.OUTSIDE_RIGHT));
154 assertEquals(4, Integer.bitCount(MapViewState.OUTSIDE_BOTTOM | MapViewState.OUTSIDE_TOP
155 | MapViewState.OUTSIDE_LEFT | MapViewState.OUTSIDE_RIGHT));
156 }
157
158 /**
159 * Test {@link MapViewPoint#getOutsideRectangleFlags(MapViewRectangle)}
160 */
161 @Test
162 public void testPointGetOutsideRectangleFlags() {
163 MapViewRectangle rect = state.getForView(0, 0).rectTo(state.getForView(10, 10));
164 assertEquals(0, state.getForView(1, 1).getOutsideRectangleFlags(rect));
165 assertEquals(0, state.getForView(1, 5).getOutsideRectangleFlags(rect));
166 assertEquals(0, state.getForView(9, 1).getOutsideRectangleFlags(rect));
167 assertEquals(0, state.getForView(10 - 1e-10, 1e-10).getOutsideRectangleFlags(rect));
168 assertEquals(0, state.getForView(10 - 1e-10, 10 - 1e-10).getOutsideRectangleFlags(rect));
169
170
171 assertEquals(MapViewState.OUTSIDE_TOP, state.getForView(1, -11).getOutsideRectangleFlags(rect));
172 assertEquals(MapViewState.OUTSIDE_TOP, state.getForView(1, -1e20).getOutsideRectangleFlags(rect));
173
174 assertEquals(MapViewState.OUTSIDE_BOTTOM, state.getForView(1, 11).getOutsideRectangleFlags(rect));
175 assertEquals(MapViewState.OUTSIDE_BOTTOM, state.getForView(1, 1e20).getOutsideRectangleFlags(rect));
176
177 assertEquals(MapViewState.OUTSIDE_LEFT, state.getForView(-11, 1).getOutsideRectangleFlags(rect));
178 assertEquals(MapViewState.OUTSIDE_LEFT, state.getForView(-1e20, 1).getOutsideRectangleFlags(rect));
179 assertEquals(MapViewState.OUTSIDE_RIGHT, state.getForView(11, 1).getOutsideRectangleFlags(rect));
180 assertEquals(MapViewState.OUTSIDE_RIGHT, state.getForView(1e20, 1).getOutsideRectangleFlags(rect));
181
182 assertEquals(MapViewState.OUTSIDE_RIGHT | MapViewState.OUTSIDE_TOP, state.getForView(11, -11).getOutsideRectangleFlags(rect));
183 assertEquals(MapViewState.OUTSIDE_RIGHT | MapViewState.OUTSIDE_BOTTOM, state.getForView(11, 11).getOutsideRectangleFlags(rect));
184 assertEquals(MapViewState.OUTSIDE_LEFT | MapViewState.OUTSIDE_TOP, state.getForView(-11, -11).getOutsideRectangleFlags(rect));
185 assertEquals(MapViewState.OUTSIDE_LEFT | MapViewState.OUTSIDE_BOTTOM, state.getForView(-11, 11).getOutsideRectangleFlags(rect));
186 }
187
188 /**
189 * Test {@link MapViewPoint#oneNormInView(MapViewPoint)}
190 */
191 @Test
192 public void testPointOneNormInView() {
193 MapViewPoint p = state.getForView(5, 15);
194 assertEquals(0, p.oneNormInView(p), 1e-10);
195 assertEquals(6, p.oneNormInView(state.getForView(-1, 15)), 1e-10);
196 assertEquals(5, p.oneNormInView(state.getForView(5, 20)), 1e-10);
197 assertEquals(22, p.oneNormInView(state.getForView(-1, -1)), 1e-10);
198 assertEquals(40, p.oneNormInView(state.getForView(30, 30)), 1e-10);
199 }
200
201 /**
202 * Test {@link MapViewState.MapViewViewPoint#toString()} and {@link MapViewState.MapViewEastNorthPoint#toString()}
203 */
204 @Test
205 public void testToString() {
206 assertEquals("MapViewViewPoint [x=1.0, y=2.0]",
207 state.getForView(1, 2).toString());
208 assertEquals("MapViewEastNorthPoint [eastNorth=EastNorth[e=0.0, n=0.0]]",
209 state.getPointFor(new EastNorth(0, 0)).toString());
210 }
211}
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