|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Smindel\GIS; |
|
4
|
|
|
|
|
5
|
|
|
use SilverStripe\Core\Config\Config; |
|
6
|
|
|
use SilverStripe\Core\Config\Configurable; |
|
7
|
|
|
use SilverStripe\Core\Injector\Injectable; |
|
8
|
|
|
use SilverStripe\ORM\DB; |
|
9
|
|
|
use Smindel\GIS\ORM\FieldType\DBGeography; |
|
10
|
|
|
use Smindel\GIS\ORM\FieldType\DBGeometry; |
|
11
|
|
|
use proj4php\Proj4php; |
|
12
|
|
|
use proj4php\Proj; |
|
13
|
|
|
use proj4php\Point; |
|
14
|
|
|
use Exception; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* @property string $array |
|
18
|
|
|
* @property string $ewkt |
|
19
|
|
|
* @property string $wkt |
|
20
|
|
|
* @property string $srid |
|
21
|
|
|
* @property string $type |
|
22
|
|
|
* @property string $coordinates |
|
23
|
|
|
*/ |
|
24
|
|
|
class GIS |
|
25
|
|
|
{ |
|
26
|
|
|
use Configurable; |
|
27
|
|
|
|
|
28
|
|
|
use Injectable; |
|
29
|
|
|
|
|
30
|
|
|
const WKT_PATTERN = '/^(([A-Z]+)\s*(\(.+\)))$/i'; |
|
31
|
|
|
const EWKT_PATTERN = '/^SRID=(\d+);(([A-Z]+)\s*(\(.+\)))$/i'; |
|
32
|
|
|
|
|
33
|
|
|
const TYPES = [ |
|
34
|
|
|
'point' => 'Point', |
|
35
|
|
|
'linestring' => 'LineString', |
|
36
|
|
|
'polygon' => 'Polygon', |
|
37
|
|
|
'multipoint' => 'MultiPoint', |
|
38
|
|
|
'multilinestring' => 'MultiLineString', |
|
39
|
|
|
'multipolygon' => 'MultiPolygon', |
|
40
|
|
|
]; |
|
41
|
|
|
|
|
42
|
|
|
private static $default_srid = 4326; |
|
43
|
|
|
|
|
44
|
|
|
protected $value; |
|
45
|
|
|
|
|
46
|
|
|
/** |
|
47
|
|
|
* Constructor |
|
48
|
|
|
* |
|
49
|
|
|
* @param $value mixed geo value: |
|
50
|
|
|
* string: wkt (default srid) or ewkt |
|
51
|
|
|
* array: just coordinates (default srid, autodetect shape) or assoc with type, srid and coordinates |
|
52
|
|
|
* GIS: extract value |
|
53
|
|
|
* DBGeography: extract value |
|
54
|
|
|
*/ |
|
55
|
28 |
|
public function __construct($value) |
|
56
|
|
|
{ |
|
57
|
28 |
|
if ($value instanceof GIS) { |
|
58
|
3 |
|
$this->value = $value->value; |
|
59
|
28 |
|
} else if ($value instanceof DBGeography) { |
|
60
|
|
|
$this->value = $value->getValue(); |
|
61
|
28 |
|
} else if (is_string($value) && preg_match(self::WKT_PATTERN, $value)) { |
|
62
|
|
|
$this->value = 'SRID=' . self::config()->default_srid . ';' . $value; |
|
63
|
|
|
} else if ( |
|
64
|
28 |
|
(is_array($value) && count($value) == 3 && isset($value['type'])) |
|
65
|
25 |
|
|| (is_string($value) && preg_match(self::EWKT_PATTERN, $value)) |
|
66
|
|
|
) { |
|
67
|
26 |
|
$this->value = $value; |
|
68
|
8 |
|
} else if (empty($value) || isset($value['coordinates']) && empty($value['coordinates'])) { |
|
69
|
|
|
$this->value = null; |
|
70
|
8 |
|
} else if (is_array($value) && !isset($value['type'])) { |
|
71
|
|
|
switch (true) { |
|
72
|
8 |
|
case is_numeric($value[0]): $type = 'Point'; break; |
|
73
|
1 |
|
case is_numeric($value[0][0]): $type = 'LineString'; break; |
|
74
|
1 |
|
case is_numeric($value[0][0][0]): $type = 'Polygon'; break; |
|
75
|
1 |
|
case is_numeric($value[0][0][0][0]): $type = 'MultiPolygon'; break; |
|
76
|
|
|
} |
|
77
|
8 |
|
$this->value = [ |
|
78
|
8 |
|
'srid' => GIS::config()->default_srid, |
|
79
|
8 |
|
'type' => $type, |
|
|
|
|
|
|
80
|
8 |
|
'coordinates' => $value, |
|
81
|
|
|
]; |
|
82
|
|
|
} else { |
|
83
|
|
|
throw new Exception('Invalid geo value'); |
|
84
|
|
|
} |
|
85
|
28 |
|
} |
|
86
|
|
|
|
|
87
|
|
|
public function __isset($property) |
|
88
|
|
|
{ |
|
89
|
|
|
return array_search($property, ['array', 'ewkt', 'srid', 'type', 'coordinates']) !== false; |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
28 |
|
public function __get($property) |
|
93
|
|
|
{ |
|
94
|
28 |
|
if (isset($this->value[$property])) { |
|
95
|
13 |
|
return $this->value[$property]; |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
switch ($property) { |
|
99
|
26 |
|
case 'array': return ['srid' => $this->srid, 'type' => $this->type, 'coordinates' => $this->coordinates]; |
|
100
|
26 |
|
case 'ewkt': return (string)$this; |
|
101
|
23 |
|
case 'wkt': return explode(';', (string)$this)[1]; |
|
102
|
22 |
|
case 'srid': return preg_match('/^SRID=(\d+);/i', $this->value, $matches) ? (int)$matches[1] : null; |
|
103
|
16 |
|
case 'type': return preg_match('/^SRID=\d+;(' . implode('|', array_change_key_case(self::TYPES, CASE_UPPER)) . ')/i', $this->value, $matches) ? self::TYPES[strtolower($matches[1])] : null; |
|
104
|
15 |
|
case 'coordinates': |
|
105
|
15 |
|
if (preg_match(self::EWKT_PATTERN, $this->value, $matches)) { |
|
106
|
|
|
|
|
107
|
15 |
|
$coords = str_replace(['(', ')'], ['[', ']'], preg_replace('/([\d\.-]+)\s+([\d\.-]+)/', "[$1,$2]", $matches[4])); |
|
108
|
|
|
|
|
109
|
15 |
|
if (strtolower($matches[3]) != 'point') { |
|
110
|
9 |
|
$coords = "[$coords]"; |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
15 |
|
return json_decode($coords, true)[0]; |
|
114
|
|
|
} else return null; |
|
115
|
|
|
default: throw new Exception('Unkown property ' . $property); |
|
116
|
|
|
} |
|
117
|
|
|
} |
|
118
|
|
|
|
|
119
|
19 |
|
public function __toString() |
|
120
|
|
|
{ |
|
121
|
19 |
|
if (is_string($this->value)) return $this->value; |
|
122
|
|
|
|
|
123
|
13 |
|
$type = isset($this->value['type']) ? strtoupper($this->value['type']) : null; |
|
124
|
13 |
|
$srid = isset($this->value['srid']) ? $this->value['srid'] : GIS::config()->default_srid; |
|
125
|
13 |
|
$array = isset($this->value['coordinates']) ? $this->value['coordinates'] : $this->value; |
|
126
|
|
|
|
|
127
|
|
|
$replacements = [ |
|
128
|
13 |
|
'/(?<=\d),(?=-|\d)/' => ' ', |
|
129
|
|
|
'/\[\[\[\[/' => '(((', |
|
130
|
|
|
'/\]\]\]\]/' => ')))', |
|
131
|
|
|
'/\[\[\[/' => '((', |
|
132
|
|
|
'/\]\]\]/' => '))', |
|
133
|
|
|
'/\[\[/' => '(', |
|
134
|
|
|
'/\]\]/' => ')', |
|
135
|
|
|
'/\[/' => '', |
|
136
|
|
|
'/\]/' => '', |
|
137
|
|
|
]; |
|
138
|
|
|
|
|
139
|
13 |
|
$coords = preg_replace(array_keys($replacements), array_values($replacements), json_encode($array)); |
|
140
|
|
|
|
|
141
|
13 |
|
return sprintf('SRID=%d;%s%s', $srid, $type, $type == 'POINT' ? "($coords)" : $coords); |
|
142
|
|
|
} |
|
143
|
|
|
|
|
144
|
9 |
|
public function isNull() |
|
145
|
|
|
{ |
|
146
|
9 |
|
return empty($this->value) || isset($this->value['coordinates']) && empty($this->value['coordinates']); |
|
147
|
|
|
} |
|
148
|
|
|
|
|
149
|
9 |
|
public static function of($dataObjectClass) |
|
150
|
|
|
{ |
|
151
|
9 |
|
if ($field = $dataObjectClass::config()->get('default_geo_field')) { |
|
152
|
|
|
return $field; |
|
153
|
|
|
} |
|
154
|
|
|
|
|
155
|
9 |
|
foreach ($dataObjectClass::config()->get('db') ?: [] as $field => $type) { |
|
156
|
8 |
|
if ($type == 'Geography' || $type == 'Geometry') { |
|
157
|
8 |
|
return $field; |
|
158
|
|
|
} |
|
159
|
|
|
} |
|
160
|
1 |
|
} |
|
161
|
|
|
|
|
162
|
|
|
/** |
|
163
|
|
|
* reproject an array representation of a geometry to the given srid |
|
164
|
|
|
*/ |
|
165
|
12 |
|
public function reproject($toSrid = 4326) |
|
166
|
|
|
{ |
|
167
|
12 |
|
$fromSrid = $this->srid; |
|
168
|
12 |
|
$fromCoordinates = $this->coordinates; |
|
169
|
12 |
|
$type = $this->type; |
|
170
|
|
|
|
|
171
|
12 |
|
if ($fromSrid != $toSrid) { |
|
172
|
1 |
|
$fromProj = self::get_proj4($fromSrid); |
|
173
|
1 |
|
$toProj = self::get_proj4($toSrid); |
|
174
|
1 |
|
$toCoordinates = self::reproject_array($fromCoordinates, $fromProj, $toProj); |
|
175
|
|
|
} else { |
|
176
|
11 |
|
$toCoordinates = $fromCoordinates; |
|
177
|
|
|
} |
|
178
|
|
|
|
|
179
|
12 |
|
return GIS::create([ |
|
180
|
12 |
|
'srid' => $toSrid, |
|
181
|
12 |
|
'type' => $type, |
|
182
|
12 |
|
'coordinates' => $toCoordinates, |
|
183
|
|
|
]); |
|
184
|
|
|
} |
|
185
|
|
|
|
|
186
|
|
|
/** |
|
187
|
|
|
* @var proj4php instance |
|
188
|
|
|
*/ |
|
189
|
|
|
protected static $proj4; |
|
190
|
|
|
|
|
191
|
1 |
|
protected static function get_proj4($srid) |
|
192
|
|
|
{ |
|
193
|
1 |
|
self::$proj4 = self::$proj4 ?: new Proj4php(); |
|
194
|
|
|
|
|
195
|
1 |
|
if (!self::$proj4->hasDef('EPSG:' . $srid)) { |
|
196
|
|
|
|
|
197
|
1 |
|
$projDefs = Config::inst()->get(self::class, 'projections'); |
|
198
|
|
|
|
|
199
|
1 |
|
if (!isset($projDefs[$srid])) { |
|
200
|
|
|
throw new Exception("Cannot use unregistered SRID $srid. Register it's <a href=\"http://spatialreference.org/ref/epsg/$srid/proj4/\">PROJ.4 definition</a> in GIS::projections."); |
|
201
|
|
|
} |
|
202
|
|
|
|
|
203
|
1 |
|
self::$proj4->addDef('EPSG:' . $srid, $projDefs[$srid]); |
|
204
|
|
|
} |
|
205
|
|
|
|
|
206
|
1 |
|
return new Proj('EPSG:' . $srid, self::$proj4); |
|
207
|
|
|
} |
|
208
|
|
|
|
|
209
|
|
|
protected static function reproject_array($coordinates, $fromProj, $toProj) |
|
210
|
|
|
{ |
|
211
|
1 |
|
return self::each($coordinates, function($coordinate) use ($fromProj, $toProj) { |
|
212
|
1 |
|
return array_slice(self::$proj4->transform($toProj, new Point($coordinate[0], $coordinate[1], $fromProj))->toArray(), 0, 2); |
|
213
|
1 |
|
}); |
|
214
|
|
|
} |
|
215
|
|
|
|
|
216
|
5 |
|
public static function each($coordinates, $callback) |
|
217
|
|
|
{ |
|
218
|
5 |
|
if ($coordinates instanceof GIS) { |
|
219
|
4 |
|
$coordinates = $coordinates->coordinates; |
|
220
|
|
|
} |
|
221
|
|
|
|
|
222
|
5 |
|
if (is_array($coordinates[0])) { |
|
223
|
|
|
|
|
224
|
2 |
|
foreach ($coordinates as &$coordinate) { |
|
225
|
2 |
|
$coordinate = self::each($coordinate, $callback); |
|
226
|
|
|
} |
|
227
|
|
|
|
|
228
|
2 |
|
return $coordinates; |
|
229
|
|
|
} |
|
230
|
|
|
|
|
231
|
5 |
|
return $callback($coordinates); |
|
232
|
|
|
} |
|
233
|
|
|
|
|
234
|
1 |
|
public function distance($geo) |
|
235
|
|
|
{ |
|
236
|
1 |
|
return DB::query('select ' . DB::get_schema()->translateDistanceQuery($this, GIS::create($geo)))->value(); |
|
|
|
|
|
|
237
|
|
|
} |
|
238
|
|
|
} |
|
239
|
|
|
|
smindel /
silverstripe-gis
Loading history...