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
|
<?php
/**
*
* EGMapElevationInfo
*
*
* A class to elevation info service
* @author Antonio Ramirez
*
* @copyright
*
* Copyright (c) 2011 Antonio Ramirez
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
* and associated documentation files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
* LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
* NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
class EGMapElevationInfo
{
/**
*
* @var type
*/
protected $coords = array();
protected $locations = array();
/**
* Constructs a EGMapElevationInfo object from a given coords String|EGMapCoord|Array
*
* @param mixed $coords the coordinates to get elevation info
* @author Antonio Ramirez
*/
public function __construct($coords = null)
{
$this->setCoords($coords);
}
/**
* Returns the coordinate array
* @return array
*/
public function getCoords()
{
return $this->coords;
}
/**
* Sets the coordinates array
* @param array $coords
* @author Antonio Ramirez
*/
public function setCoords($coords)
{
if(!is_array($coords))
$coords = array($coords);
foreach($coords as $coord)
$this->addCoord($coord);
}
/**
* Adds a coordinate to the array, can be a string or a EGMapCoord object
* @param mixed $coord
* @author Antonio Ramirez
*/
public function addCoord($coord)
{
if($coord instanceof EGMapCoord)
$coord = $coord->__toString ();
$this->coords[] = str_replace(' ','',$coord);
}
/**
*
* @return array of EGMapElevationInfoResult objects if api call was
* successfull
*/
public function getLocations()
{
return $this->locations;
}
/**
* Request the elevation info using Google Maps' API JSON
*
* @param EGMapClient $gmap_client
* @param $forceEncode whether to encode the lat/lng points
* @return array of EGMapElevationInfoResult if successful
* @author Antonio Ramirez
*/
public function elevationRequestJson($gmap_client, $forceEncode = true)
{
if(empty($this->coords)) return false;
$this->locations = array();
$coords = array();
/* At least 3 coords otherwise is not point */
if($forceEncode && count($this->coords)>2)
$coords = $this->prepareEncodedCoords($this->coords);
else
$coords = implode('|', $this->coords);
$raw_data = $gmap_client->getElevationInfo($coords);
$data = CJSON::decode($raw_data);
if ('OK' != $data['status'])
{
return false;
}
foreach($data['results'] as $result)
{
$info = new EGMapElevationInfoResult();
$info->lat = $result['location']['lat'];
$info->lng = $result['location']['lng'];
$info->elevation = $result['elevation'];
$info->resolution = $result['resolution'];
$this->locations[] = $info;
}
return $this->locations;
}
/**
* Request the elevation info using Google Maps' API XML
*
* @param EGMapClient $gmap_client
* @param $forceEncode whether to encode the lat/lng points
* @return array of EGMapElevationInfoResult if successful
* @author Antonio Ramirez
*/
public function elevationRequestXml($gmap_client, $forceEncode = true)
{
if(empty($this->coords)) return false;
$this->locations = array();
$coords = array();
/* At least 3 coords otherwise is not point */
if($forceEncode && count($this->coords)>2)
$coords = $this->prepareEncodedCoords($this->coords);
else
$coords = implode('|', $this->coords);
$raw_data = $gmap_client->getElevationInfo($coords, 'xml');
$xml = simplexml_load_string($raw_data);
if ('OK' != $xml->status)
{
return false;
}
foreach ($xml->result as $component)
{
$info = new EGMapElevationInfoResult();
$info->lat = $component->location->lat;
$info->lng = $component->location->lng;
$info->elevation = $component->elevation;
$info->resolution = $component->resolution;
$this->locations[] = $info;
}
return $this->locations;
}
/**
* Encodes coordinates based on Google polyline algorithm
* @see http://code.google.com/intl/es/apis/maps/documentation/utilities/polylinealgorithm.html
* @param array $coords
* @return string coordinates
*/
protected function prepareEncodedCoords($coords)
{
$enc = new EGMapPolylineEncoder();
$ecoords = array();
foreach($coords as $coord)
{
$ecoords[] = explode(',', $coord);
}
return 'enc:' . $enc->encode($ecoords);
}
}
/**
* EGMapElevationInfoResult class
*
* General object to fill with results of different adapters
*/
class EGMapElevationInfoResult {
/**
*
* @var array $props that hold attributes
*/
protected $props;
/**
* Magic method __set
* @param string $name
* @param string $value
*/
public function __set($name, $value)
{
$this->props[$name] = $value;
}
/**
* Magic method __get
* @param string $name the attribute name
* @return attribute value | null if not exists
*/
public function __get($name)
{
return isset($this->props[$name])?$this->props[$name]:null;
}
}
|
