| 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325 | 1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
| goog.provide('ol.source.TileVector');
goog.require('goog.array');
goog.require('goog.asserts');
goog.require('goog.object');
goog.require('ol.TileCoord');
goog.require('ol.TileUrlFunction');
goog.require('ol.featureloader');
goog.require('ol.source.State');
goog.require('ol.source.Vector');
goog.require('ol.tilegrid.TileGrid');
/**
* @classdesc
* A vector source in one of the supported formats, where the data is divided
* into tiles in a fixed grid pattern.
*
* @constructor
* @extends {ol.source.Vector}
* @param {olx.source.TileVectorOptions} options Options.
* @api
*/
ol.source.TileVector = function(options) {
goog.base(this, {
attributions: options.attributions,
logo: options.logo,
projection: undefined,
state: ol.source.State.READY
});
/**
* @private
* @type {ol.format.Feature}
*/
this.format_ = options.format;
goog.asserts.assert(goog.isDefAndNotNull(this.format_),
'ol.source.TileVector requires a format');
/**
* @private
* @type {ol.tilegrid.TileGrid}
*/
this.tileGrid_ = options.tileGrid;
/**
* @private
* @type {ol.TileUrlFunctionType}
*/
this.tileUrlFunction_ = ol.TileUrlFunction.nullTileUrlFunction;
/**
* @private
* @type {ol.TileCoordTransformType}
*/
this.tileCoordTransform_ = this.tileGrid_.createTileCoordTransform();
/**
* @private
* @type {Object.<string, Array.<ol.Feature>>}
*/
this.tiles_ = {};
if (goog.isDef(options.tileUrlFunction)) {
this.setTileUrlFunction(options.tileUrlFunction);
} else if (goog.isDef(options.urls)) {
this.setUrls(options.urls);
} else if (goog.isDef(options.url)) {
this.setUrl(options.url);
}
};
goog.inherits(ol.source.TileVector, ol.source.Vector);
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.addFeature = goog.abstractMethod;
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.addFeatures = goog.abstractMethod;
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.clear = function() {
goog.object.clear(this.tiles_);
};
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.forEachFeature = goog.abstractMethod;
/**
* Iterate through all features whose geometries contain the provided
* coordinate at the provided resolution, calling the callback with each
* feature. If the callback returns a "truthy" value, iteration will stop and
* the function will return the same value.
*
* @param {ol.Coordinate} coordinate Coordinate.
* @param {number} resolution Resolution.
* @param {function(this: T, ol.Feature): S} callback Called with each feature
* whose goemetry contains the provided coordinate.
* @param {T=} opt_this The object to use as `this` in the callback.
* @return {S|undefined} The return value from the last call to the callback.
* @template T,S
*/
ol.source.TileVector.prototype.forEachFeatureAtCoordinateAndResolution =
function(coordinate, resolution, callback, opt_this) {
var tileGrid = this.tileGrid_;
var tiles = this.tiles_;
var tileCoord = tileGrid.getTileCoordForCoordAndResolution(coordinate,
resolution);
var tileKey = this.getTileKeyZXY_(tileCoord[0], tileCoord[1], tileCoord[2]);
var features = tiles[tileKey];
if (goog.isDef(features)) {
var i, ii;
for (i = 0, ii = features.length; i < ii; ++i) {
var feature = features[i];
var geometry = feature.getGeometry();
goog.asserts.assert(goog.isDefAndNotNull(geometry),
'feature geometry is defined and not null');
if (geometry.containsCoordinate(coordinate)) {
var result = callback.call(opt_this, feature);
if (result) {
return result;
}
}
}
}
return undefined;
};
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.forEachFeatureInExtent = goog.abstractMethod;
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.forEachFeatureInExtentAtResolution =
function(extent, resolution, f, opt_this) {
var tileGrid = this.tileGrid_;
var tiles = this.tiles_;
var z = tileGrid.getZForResolution(resolution);
var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
var x, y;
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
var tileKey = this.getTileKeyZXY_(z, x, y);
var features = tiles[tileKey];
if (goog.isDef(features)) {
var i, ii;
for (i = 0, ii = features.length; i < ii; ++i) {
var result = f.call(opt_this, features[i]);
if (result) {
return result;
}
}
}
}
}
return undefined;
};
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.getClosestFeatureToCoordinate =
goog.abstractMethod;
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.getExtent = goog.abstractMethod;
/**
* Return the features of the TileVector source.
* @inheritDoc
* @api
*/
ol.source.TileVector.prototype.getFeatures = function() {
var tiles = this.tiles_;
var features = [];
var tileKey;
for (tileKey in tiles) {
goog.array.extend(features, tiles[tileKey]);
}
return features;
};
/**
* Get all features whose geometry intersects the provided coordinate for the
* provided resolution.
* @param {ol.Coordinate} coordinate Coordinate.
* @param {number} resolution Resolution.
* @return {Array.<ol.Feature>} Features.
* @api
*/
ol.source.TileVector.prototype.getFeaturesAtCoordinateAndResolution =
function(coordinate, resolution) {
var features = [];
this.forEachFeatureAtCoordinateAndResolution(coordinate, resolution,
/**
* @param {ol.Feature} feature Feature.
*/
function(feature) {
features.push(feature);
});
return features;
};
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.getFeaturesInExtent = goog.abstractMethod;
/**
* @param {number} z Z.
* @param {number} x X.
* @param {number} y Y.
* @private
* @return {string} Tile key.
*/
ol.source.TileVector.prototype.getTileKeyZXY_ = function(z, x, y) {
return z + '/' + x + '/' + y;
};
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.loadFeatures =
function(extent, resolution, projection) {
var tileCoordTransform = this.tileCoordTransform_;
var tileGrid = this.tileGrid_;
var tileUrlFunction = this.tileUrlFunction_;
var tiles = this.tiles_;
var z = tileGrid.getZForResolution(resolution);
var tileRange = tileGrid.getTileRangeForExtentAndZ(extent, z);
var tileCoord = [z, 0, 0];
var x, y;
/**
* @param {string} tileKey Tile key.
* @param {Array.<ol.Feature>} features Features.
* @this {ol.source.TileVector}
*/
function success(tileKey, features) {
tiles[tileKey] = features;
this.changed();
}
for (x = tileRange.minX; x <= tileRange.maxX; ++x) {
for (y = tileRange.minY; y <= tileRange.maxY; ++y) {
var tileKey = this.getTileKeyZXY_(z, x, y);
if (!(tileKey in tiles)) {
tileCoord[0] = z;
tileCoord[1] = x;
tileCoord[2] = y;
tileCoordTransform(tileCoord, projection, tileCoord);
var url = tileUrlFunction(tileCoord, 1, projection);
if (goog.isDef(url)) {
tiles[tileKey] = [];
var loader = ol.featureloader.loadFeaturesXhr(url, this.format_,
goog.partial(success, tileKey));
loader.call(this, extent, resolution, projection);
}
}
}
}
};
/**
* @inheritDoc
*/
ol.source.TileVector.prototype.removeFeature = goog.abstractMethod;
/**
* @param {ol.TileUrlFunctionType} tileUrlFunction Tile URL function.
*/
ol.source.TileVector.prototype.setTileUrlFunction = function(tileUrlFunction) {
this.tileUrlFunction_ = tileUrlFunction;
this.changed();
};
/**
* @param {string} url URL.
*/
ol.source.TileVector.prototype.setUrl = function(url) {
this.setTileUrlFunction(ol.TileUrlFunction.createFromTemplates(
ol.TileUrlFunction.expandUrl(url)));
};
/**
* @param {Array.<string>} urls URLs.
*/
ol.source.TileVector.prototype.setUrls = function(urls) {
this.setTileUrlFunction(ol.TileUrlFunction.createFromTemplates(urls));
};
|