OpenLayers OpenLayers

root/trunk/openlayers/tests/Geometry/Point.html

Revision 7885, 6.6 kB (checked in by crschmidt, 4 months ago)

Clear bounds of geometries when reprojecting. Patch wwork by myself, tschaub,
ahocevar. r=ahocevar. (Closes #1658)

  • Property svn:eol-style set to native
Line 
1 <html>
2 <head>
3   <script src="../../lib/OpenLayers.js"></script>
4   <script type="text/javascript">
5     var point;
6        
7     function test_Point_constructor (t) {
8         t.plan( 8 );
9
10       //empty
11         point = new OpenLayers.Geometry.Point();
12         t.ok( point instanceof OpenLayers.Geometry.Point, "new OpenLayers.Geometry.Point returns point object" );
13         t.eq( point.CLASS_NAME, "OpenLayers.Geometry.Point", "point.CLASS_NAME is set correctly");
14
15       //valid
16         var x = 10;
17         var y = 20;
18         point = new OpenLayers.Geometry.Point(x, y);
19         t.ok( point instanceof OpenLayers.Geometry.Point, "new OpenLayers.Geometry.Point returns point object" );
20         t.eq( point.CLASS_NAME, "OpenLayers.Geometry.Point", "point.CLASS_NAME is set correctly");
21         t.eq( point.x, x, "point.x is set correctly");
22         t.eq( point.y, y, "point.y is set correctly");
23         t.eq( point.lon, null, "point.lon is not set");
24         t.eq( point.lat, null, "point.lat is not set");
25     }
26
27     function test_Point_calculateBounds (t) {
28         t.plan(4);
29
30         var x = 10;
31         var y = 20;
32         point = new OpenLayers.Geometry.Point(x, y);
33         point.calculateBounds();
34         t.eq( point.bounds.left, x, "bounds.left is 10" );
35         t.eq( point.bounds.right, x, "bounds.right is 10" );
36         t.eq( point.bounds.top, y, "bounds.top is 20" );
37         t.eq( point.bounds.bottom, y, "bounds.bottom is 20" );
38     }
39    
40
41     function test_Point_transform_getBounds (t) {
42         t.plan(2);
43
44         var x = 10;
45         var y = 20;
46         point = new OpenLayers.Geometry.Point(x, y);
47         point.calculateBounds();
48         t.ok( point.bounds != null, "bounds calculated by calcBounds" );
49         point.transform(new OpenLayers.Projection("EPSG:4326"),
50                         new OpenLayers.Projection("EPSG:900913"));
51         t.eq(point.bounds, null, "Point bounds cleared after transform");
52     }
53    
54     function test_Point_distanceTo(t) {
55         t.plan(2);
56
57         var x1 = 10;
58         var y1 = 20;
59         point1 = new OpenLayers.Geometry.Point(x1, y1);
60
61         var x2 = 100;
62         var y2 = 200;
63         point2 = new OpenLayers.Geometry.Point(x2, y2);
64
65         var dist = point1.distanceTo(point2)
66         t.eq( dist, 201.24611797498107267682563018581, "distances calculating correctly");
67         t.eq( dist, Math.sqrt((x2-x1)*(x2-x1) + (y2-y1)*(y2-y1)), "distance calculation correct");
68     }
69    
70     function test_Point_toString(t) {
71         t.plan(1);
72
73         var x = 10;
74         var y = 20;
75         point = new OpenLayers.Geometry.Point(x, y);
76         t.eq(point.toString(), "POINT(" + x + " " + y + ")",
77              "toString() returns WKT" );
78        
79     }
80    
81     function test_Point_move(t) {
82         t.plan(3);
83        
84         var x = 10;
85         var y = 20;
86         point = new OpenLayers.Geometry.Point(x, y);
87        
88         var dx = 10 * Math.random();
89         var dy = 10 * Math.random();
90         point.bounds = "foo";
91         point.move(dx, dy);
92         t.eq(point.x, x + dx, "move() correctly modifies x");
93         t.eq(point.y, y + dy, "move() correctly modifies y");
94        
95         t.ok(point.bounds == null, "bounds is cleared after a move()");
96     }
97
98     function test_Point_rotate(t) {
99         t.plan(5);
100        
101         var tolerance = 1e-10;
102         var x = 10;
103         var y = 20;
104         var point = new OpenLayers.Geometry.Point(x, y);
105         var origin = new OpenLayers.Geometry.Point(5, 10);
106        
107         // rotate a full revolution
108         point.bounds = "foo";
109         point.rotate(360, origin);
110         t.ok(((point.x - x) / x) < tolerance,
111              "rotate by 360 returns to the same y");
112         t.ok(((point.y - y) / y) < tolerance,
113              "rotate by 360 returns to the same y");
114        
115         t.ok(point.bounds == null, "bounds is cleared after a rotate()");
116        
117         // rotate an 1/8 turn
118         point.rotate(45, origin);
119         t.ok(((point.x - 1.4644660940672636) / 1.4644660940672636) < tolerance,
120              "rotate 1/8 turn correctly");
121         t.ok(((point.y - 20.606601717798213) / 20.606601717798213) < tolerance,
122              "rotate 1/8 turn correctly");
123     }
124
125     function test_Point_resize(t) {
126         t.plan(5);
127        
128         var tolerance = 1e-10;
129         var x = 100 * Math.random();
130         var y = 100 * Math.random();
131         var point = new OpenLayers.Geometry.Point(x, y);
132         point.bounds = "foo";
133        
134         var i = 100 * Math.random();
135         var j = 100 * Math.random();
136         var origin = new OpenLayers.Geometry.Point(i, j);
137        
138         var scale = 10 * Math.random();
139         var oldDistance = origin.distanceTo(point);
140        
141         point.resize(scale, origin);
142         var newDistance = origin.distanceTo(point);
143        
144         t.ok((origin.x == i) && (origin.y == j),
145              "resize leaves the origin untouched");
146         t.ok((((newDistance / oldDistance) - scale) / scale) < tolerance,
147              "resize moves points the correct distance from the origin");
148        
149         t.ok(point.bounds == null, "bounds is correctly cleared after a resize()");
150        
151         // resize with non uniform scaling (ratio != 1)
152         point = new OpenLayers.Geometry.Point(10, 10);
153         origin = new OpenLayers.Geometry.Point(0, 0);
154         point.resize(2, origin, 4);
155         t.eq(point.x, 80, "non-uniform scaling correctly applied in x dim");
156         t.eq(point.y, 20, "non-uniform scaling correctly applied in y dim");
157        
158     }
159
160     function test_Point_equals(t) {
161         t.plan(3);
162        
163         var x = Math.random() * 100;
164         var y = Math.random() * 100;
165         var geometry = new OpenLayers.Geometry.Point(x, y);
166         var equal = new OpenLayers.Geometry.Point(x, y);
167         var offX = new OpenLayers.Geometry.Point(x + 1, y);
168         var offY = new OpenLayers.Geometry.Point(x, y + 1);
169         t.ok(geometry.equals(equal),
170              "equals() returns true for a geometry with equivalent coordinates");
171         t.ok(!geometry.equals(offX),
172              "equals() returns false for a geometry with offset x");
173         t.ok(!geometry.equals(offY),
174              "equals() returns false for a geometry with offset y");
175     }
176    
177     function test_Point_clone(t) {
178         t.plan(2);
179        
180         var x = Math.random() * 100;
181         var y = Math.random() * 100;
182         var geometry = new OpenLayers.Geometry.Point(x, y);
183         var clone = geometry.clone();
184         t.ok(clone instanceof OpenLayers.Geometry.Point,
185              "clone() creates an OpenLayers.Geometry.Point");
186         t.ok(geometry.equals(clone), "clone has equivalent coordinates");
187     }
188    
189
190   </script>
191 </head>
192 <body>
193 </body>
194 </html>
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