source: trunk/docs/api/zoo-format-kml.txt @ 348

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1.. _api-zoo-format-kml:
2
3ZOO.Format.KML
4==============
5
6Read/Write KML.
7
8Inherits from
9
10- :ref:`ZOO.Format <api-zoo-format>`
11
12Properties and Functions       
13------------------------
14
15.. list-table::
16   :widths: 20 50
17   :header-rows: 1
18
19   * - NAME
20     - DESCRIPTION
21   * - :ref:`kmlns <kmlns>`
22     - {String} KML Namespace to use.
23   * - :ref:`foldersName <foldersName>`
24     - {String} Name of the folders.
25   * - :ref:`foldersDesc <foldersDesc>`
26     - {String} Description of the folders.
27   * - :ref:`placemarksDesc <placemarksDesc>`
28     - {String} Name of the placemarks.
29   * - :ref:`extractAttributes <extractAttributes>`
30     - {Boolean} Extract attributes from KML.   
31   * - :ref:`ZOO.Format.KML <ZOO.Format.KML>`
32     - Create a new parser for KML.
33   * - :ref:`parseFeatures <parseFeatures>`
34     - Loop through all Placemark nodes and parse them.
35   * - :ref:`parseFeature <parseFeature>`
36     - This function is the core of the KML parsing code in ZOO.
37   * - :ref:`parseGeometry <parseGeometry>`
38     - Properties of this object are the functions that parse geometries based on their type.
39   * - :ref:`parseGeometry.point <parseGeometry.point>`
40     - Given a KML node representing a point geometry, create a ZOO point geometry. 
41   * - :ref:`parseGeometry.linestring <parseGeometry.linestring>`
42     - Given a KML node representing a linestring geometry, create a ZOO linestring geometry.
43   * - :ref:`parseGeometry.polygon <parseGeometry.polygon>`
44     - Given a KML node representing a polygon geometry, create a ZOO polygon geometry.
45   * - :ref:`parseGeometry.multigeometry <parseGeometry.multigeometry>`
46     - Given a KML node representing a multigeometry, create a ZOO geometry collection.
47   * - :ref:`parseAttributes <parseAttributes>`
48     - 
49   * - :ref:`parseExtendedData <parseExtendedData>`
50     - Parse ExtendedData from KML. 
51   * - :ref:`write <write>`
52     - Accept Feature Collection, and return a string.
53   * - :ref:`createPlacemark <createPlacemark>`
54     - Creates and returns a KML placemark node representing the given feature.
55   * - :ref:`buildGeometryNode <buildGeometryNode>`
56     - Builds and returns a KML geometry node with the given geometry.
57   * - :ref:`buildGeometry <buildGeometry>`
58     - Object containing methods to do the actual geometry node building based on geometry type.
59   * - :ref:`buildGeometry.point <buildGeometry.point>`
60     - Given a ZOO point geometry, create a KML point.     
61   * - :ref:`buildGeometry.multipoint <buildGeometry.multipoint>`
62     - Given a ZOO multipoint geometry, create a KML GeometryCollection.
63   * - :ref:`buildGeometry.linestring <buildGeometry.linestring>`
64     -  Given a ZOO linestring geometry, create a KML linestring.
65   * - :ref:`buildGeometry.multilinestring <buildGeometry.multilinestring>`
66     - Given a ZOO multilinestring geometry, create a KML GeometryCollection.
67   * - :ref:`buildGeometry.linearring <buildGeometry.linearring>`
68     - Given a ZOO linearring geometry, create a KML linearring.
69   * - :ref:`buildGeometry.polygon <buildGeometry.polygon>`
70     - Given a ZOO polygon geometry, create a KML polygon.
71   * - :ref:`buildGeometry.multipolygon <buildGeometry.multipolygon>`
72     - Given a ZOO multipolygon geometry, create a KML GeometryCollection.
73   * - :ref:`buildGeometry.collection <buildGeometry.collection>`
74     - Given a ZOO geometry collection, create a KML MultiGeometry.
75   * - :ref:`buildCoordinatesNode <buildCoordinatesNode>`
76     - Builds and returns the KML coordinates node with the given geometry <coordinates>...</coordinates>
77
78.. _kmlns: 
79       
80kmlns   
81  ``{String}`` KML Namespace to use. Defaults to 2.2 namespace.
82 
83.. _foldersName: 
84 
85foldersName     
86  ``{String}`` Name of the folders. Default is "ZOO export".  If set to null, no name element will be created.
87 
88.. _foldersDesc:   
89 
90foldersDesc     
91  ``{String}`` Description of the folders. Default is "Exported on [date]."  If set to null, no description element will be created.
92 
93.. _placemarksDesc:     
94 
95placemarksDesc 
96  ``{String}`` Name of the placemarks. Default is "No description available".
97 
98.. _extractAttributes:       
99 
100extractAttributes       
101  ``{Boolean}`` Extract attributes from KML. Default is true.  Extracting styleUrls requires this to be set to true
102 
103.. _ZOO.Format.KML:         
104 
105ZOO.Format.KML 
106  Create a new parser for KML.
107
108  *Parameters*
109 
110  ``options {Object}`` An optional object whose properties will be set on this instance.
111 
112.. _parseFeatures:           
113 
114parseFeatures   
115  ::
116 
117    parseFeatures: function(nodes)
118
119  Loop through all Placemark nodes and parse them.  Will create a list of features
120
121  *Parameters*
122 
123  | ``nodes {Array}`` of {E4XElement} data to read/parse.
124  | ``options {Object}`` Hash of options
125 
126.. _parseFeature:             
127 
128parseFeature   
129  ::
130 
131    parseFeature: function(node)
132
133  This function is the core of the KML parsing code in ZOO.  It creates the geometries
134  that are then attached to the returned feature, and calls parseAttributes() to get
135  attribute data out.
136 
137  *Parameters*
138 
139  ``node {E4XElement}``
140
141  *Returns*
142
143  :ref:`{ZOO.Feature} <api-zoo-feature>` A vector feature. 
144 
145.. _parseGeometry:               
146 
147parseGeometry   
148  Properties of this object are the functions that parse geometries based on their type.
149 
150.. _parseGeometry.point:                 
151 
152parseGeometry.point     
153  Given a KML node representing a point geometry, create a ZOO point geometry.
154
155  *Parameters*
156 
157  ``node {E4XElement}`` A KML Point node.
158 
159  *Returns*
160
161  :ref:`{ZOO.Geometry.Point} <api-zoo-geometry-point>` A point geometry.
162 
163.. _parseGeometry.linestring:                   
164 
165parseGeometry.linestring       
166  Given a KML node representing a linestring geometry, create a ZOO linestring geometry.
167
168  *Parameters*
169 
170  ``node {E4XElement}`` A KML LineString node.
171
172  *Returns*
173
174  :ref:`{ZOO.Geometry.LineString} <api-zoo-geometry-linestring>` A linestring geometry.
175 
176.. _parseGeometry.polygon:                     
177 
178parseGeometry.polygon   
179  Given a KML node representing a polygon geometry, create a ZOO polygon geometry.
180
181  *Parameters*
182 
183  ``node {E4XElement}`` A KML Polygon node.
184 
185  *Returns*
186
187  :ref:`{ZOO.Geometry.Polygon} <api-zoo-geometry-polygon>` A polygon geometry.
188 
189.. _parseGeometry.multigeometry:                       
190 
191parseGeometry.multigeometry     
192  Given a KML node representing a multigeometry, create a ZOO geometry collection.
193
194  *Parameters*
195 
196  ``node {E4XElement}`` A KML MultiGeometry node.
197 
198  *Returns*
199
200  :ref:`{ZOO.Geometry.Collection} <api-zoo-geometry-collection>` A geometry collection. 
201 
202.. _parseAttributes:                         
203 
204parseAttributes
205  ::
206 
207    parseAttributes: function(node)
208
209  *Parameters*
210 
211  ``node {E4XElement}``
212 
213  *Returns*
214
215  ``{Object}`` An attributes object.
216
217.. _parseExtendedData:
218
219parseExtendedData       
220  ::
221 
222    parseExtendedData: function(node)
223
224  Parse ExtendedData from KML.  Limited support for schemas/datatypes.  See http://code.google.com/apis/kml/documentation/kmlreference.html#extendeddata
225  for more information on extendeddata.
226 
227  *Parameters*
228 
229  ``node {E4XElement}``
230 
231  *Returns*
232
233  ``{Object}`` An attributes object.
234 
235.. _write: 
236 
237write   
238  ::
239 
240    write: function(features)
241
242  Accept Feature Collection, and return a string.
243
244  *Parameters*
245 
246  ``features`` :ref:`{Array(ZOO.Feature)} <api-zoo-feature>` An array of features.
247 
248  *Returns*
249
250  ``{String}`` A KML string. 
251 
252.. _createPlacemark:   
253 
254createPlacemark
255  ::
256 
257    createPlacemark: function(feature)
258
259  Creates and returns a KML placemark node representing the given feature.
260
261  *Parameters*
262 
263  ``feature`` :ref:`{ZOO.Feature} <api-zoo-feature>`
264 
265  *Returns*
266
267  ``{E4XElement}``
268 
269.. _buildGeometryNode:     
270 
271buildGeometryNode       
272  ::
273 
274    buildGeometryNode: function(geometry)
275
276  Builds and returns a KML geometry node with the given geometry.
277
278  *Parameters*
279 
280  ``geometry`` :ref:`{ZOO.Geometry} <api-zoo-geometry>`
281
282  *Returns*
283
284  ``{E4XElement}``
285 
286.. _buildGeometry:       
287 
288buildGeometry   
289  Object containing methods to do the actual geometry node building based on geometry type.
290 
291.. _buildGeometry.point:         
292 
293buildGeometry.point     
294  Given a ZOO point geometry, create a KML point.
295
296  *Parameters*
297 
298  ``geometry`` :ref:`{ZOO.Geometry.Point} <api-zoo-geometry-point>` A point geometry.
299
300  *Returns*
301
302  ``{E4XElement}`` A KML point node. 
303 
304.. _buildGeometry.multipoint:           
305 
306buildGeometry.multipoint       
307  Given a ZOO multipoint geometry, create a KML GeometryCollection.
308
309  *Parameters*
310 
311  ``geometry`` :ref:`{ZOO.Geometry.MultiPoint} <api-zoo-geometry-multipoint>` A multipoint geometry.
312 
313  *Returns*
314
315  ``{E4XElement}`` A KML GeometryCollection node.
316 
317.. _buildGeometry.linestring:             
318 
319buildGeometry.linestring       
320  Given a ZOO linestring geometry, create a KML linestring.
321 
322  *Parameters*
323 
324  ``geometry`` :ref:`{ZOO.Geometry.LineString} <api-zoo-geometry-linestring>` A linestring geometry.
325
326  *Returns*
327
328  ``{E4XElement}`` A KML linestring node.
329 
330.. _buildGeometry.multilinestring:               
331 
332buildGeometry.multilinestring   
333  Given a ZOO multilinestring geometry, create a KML GeometryCollection.
334
335  *Parameters*
336 
337  ``geometry`` :ref:`{ZOO.Geometry.MultiLineString} <api-zoo-geometry-multilinestring>` A multilinestring geometry.
338
339  *Returns*
340
341  ``{E4XElement}`` A KML GeometryCollection node.
342 
343.. _buildGeometry.linearring:                 
344 
345buildGeometry.linearring       
346  Given a ZOO linearring geometry, create a KML linearring.
347
348  *Parameters*
349 
350  ``geometry`` :ref:`{ZOO.Geometry.LinearRing} <api-zoo-geometry-linearring>` A linearring geometry.
351
352  *Returns*
353
354  ``{E4XElement}`` A KML linearring node. 
355 
356.. _buildGeometry.polygon:                   
357 
358buildGeometry.polygon   
359  Given a ZOO polygon geometry, create a KML polygon.
360
361  *Parameters*
362 
363  ``geometry`` :ref:`{ZOO.Geometry.Polygon} <api-zoo-geometry-polygon>` A polygon geometry.
364
365  *Returns*
366
367  ``{E4XElement}`` A KML polygon node. 
368 
369.. _buildGeometry.multipolygon:                     
370 
371buildGeometry.multipolygon     
372  Given a ZOO multipolygon geometry, create a KML GeometryCollection.
373
374  *Parameters*
375 
376  ``geometry`` :ref:`{ZOO.Geometry.Point} <api-zoo-geometry-point>` A multipolygon geometry.
377
378  *Returns*
379
380  ``{E4XElement}`` A KML GeometryCollection node. 
381 
382.. _buildGeometry.collection:                       
383 
384buildGeometry.collection       
385  Given a ZOO geometry collection, create a KML MultiGeometry.
386
387  *Parameters*
388 
389  ``geometry`` :ref:`{ZOO.Geometry.Collection} <api-zoo-geometry-collection>` A geometry collection.
390
391  *Returns*
392
393  ``{E4XElement}`` A KML MultiGeometry node. 
394 
395.. _buildCoordinatesNode:                         
396 
397buildCoordinatesNode   
398  ::
399 
400    buildCoordinatesNode: function(geometry)
401
402  Builds and returns the KML coordinates node with the given geometry <coordinates>...</coordinates>
403
404  *Parameters*
405 
406  ``geometry`` :ref:`{ZOO.Geometry} <api-zoo-geometry>`
407
408  *Return*
409
410  ``{E4XElement}``
411 
412 
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