|
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 proj4php\Proj4php; |
|
11
|
|
|
use proj4php\Proj; |
|
12
|
|
|
use proj4php\Point; |
|
13
|
|
|
use Exception; |
|
14
|
|
|
|
|
15
|
|
|
class GIS |
|
16
|
|
|
{ |
|
17
|
|
|
use Configurable; |
|
18
|
|
|
|
|
19
|
|
|
use Injectable; |
|
20
|
|
|
|
|
21
|
|
|
private static $default_srid = 4326; |
|
|
|
|
|
|
22
|
|
|
|
|
23
|
|
|
const EWKT_PATTERN = '/^SRID=(\d+);(([A-Z]+)\s*(\(.+\)))$/i'; |
|
24
|
|
|
|
|
25
|
|
|
const TYPES = [ |
|
26
|
|
|
'point' => 'Point', |
|
27
|
|
|
'linestring' => 'LineString', |
|
28
|
|
|
'polygon' => 'Polygon', |
|
29
|
|
|
'multipolygon' => 'MultiPolygon', |
|
30
|
|
|
]; |
|
31
|
|
|
|
|
32
|
8 |
|
public static function of($dataObjectClass) |
|
33
|
|
|
{ |
|
34
|
8 |
|
if ($field = $dataObjectClass::config()->get('default_geo_field')) { |
|
35
|
|
|
return $field; |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
8 |
|
foreach ($dataObjectClass::config()->get('db') ?: [] as $field => $type) { |
|
39
|
8 |
|
if ($type == 'Geography' || $type == 'Geometry') { |
|
40
|
8 |
|
return $field; |
|
41
|
|
|
} |
|
42
|
|
|
} |
|
43
|
|
|
} |
|
44
|
|
|
|
|
45
|
12 |
|
public static function to_ewkt($geo) |
|
46
|
|
|
{ |
|
47
|
12 |
|
if (is_string($geo)) return $geo; |
|
48
|
|
|
|
|
49
|
12 |
|
if ($geo instanceof DBGeography) $geo = $geo->getValue(); |
|
50
|
|
|
|
|
51
|
12 |
|
$type = isset($geo['type']) ? strtoupper($geo['type']) : null; |
|
52
|
12 |
|
$srid = isset($geo['srid']) ? $geo['srid'] : Config::inst()->get(self::class, 'default_srid'); |
|
53
|
12 |
|
$array = isset($geo['coordinates']) ? $geo['coordinates'] : $geo; |
|
54
|
|
|
|
|
55
|
12 |
|
if (!$type) { |
|
56
|
|
|
switch (true) { |
|
57
|
5 |
|
case is_numeric($array[0]): $type = 'POINT'; break; |
|
58
|
1 |
|
case is_numeric($array[0][0]): $type = 'LINESTRING'; break; |
|
59
|
1 |
|
case is_numeric($array[0][0][0]): $type = 'POLYGON'; break; |
|
60
|
1 |
|
case is_numeric($array[0][0][0][0]): $type = 'MULTIPOLYGON'; break; |
|
61
|
|
|
} |
|
62
|
|
|
} |
|
63
|
|
|
|
|
64
|
|
|
$replacements = [ |
|
65
|
12 |
|
'/(?<=\d),(?=-|\d)/' => ' ', |
|
66
|
|
|
'/\[\[\[\[/' => '(((', |
|
67
|
|
|
'/\]\]\]\]/' => ')))', |
|
68
|
|
|
'/\[\[\[/' => '((', |
|
69
|
|
|
'/\]\]\]/' => '))', |
|
70
|
|
|
'/\[\[/' => '(', |
|
71
|
|
|
'/\]\]/' => ')', |
|
72
|
|
|
'/\[/' => '', |
|
73
|
|
|
'/\]/' => '', |
|
74
|
|
|
]; |
|
75
|
|
|
|
|
76
|
12 |
|
$coords = preg_replace(array_keys($replacements), array_values($replacements), json_encode($array)); |
|
77
|
|
|
|
|
78
|
12 |
|
return sprintf('SRID=%d;%s%s', $srid, $type, $type == 'POINT' ? "($coords)" : $coords); |
|
79
|
|
|
} |
|
80
|
|
|
|
|
81
|
11 |
|
public static function to_array($geo) |
|
82
|
|
|
{ |
|
83
|
11 |
|
if ($geo instanceof DBGeography) return $geo->getValue(); |
|
84
|
|
|
|
|
85
|
11 |
|
if (is_array($geo)) { |
|
86
|
3 |
|
if (isset($geo['coordinates'])) return $geo; |
|
87
|
|
|
switch (true) { |
|
88
|
|
|
case is_numeric($geo[0]): $type = 'Point'; break; |
|
89
|
|
|
case is_numeric($geo[0][0]): $type = 'LineString'; break; |
|
90
|
|
|
case is_numeric($geo[0][0][0]): $type = 'Polygon'; break; |
|
91
|
|
|
case is_numeric($geo[0][0][0][0]): $type = 'MultiPolygon'; break; |
|
92
|
|
|
} |
|
93
|
|
|
return [ |
|
94
|
|
|
'srid' => Config::inst()->get(self::class, 'default_srid'), |
|
95
|
|
|
'type' => $type, |
|
|
|
|
|
|
96
|
|
|
'cooridinates' => $geo |
|
97
|
|
|
]; |
|
98
|
|
|
} |
|
99
|
|
|
|
|
100
|
11 |
|
if (preg_match(self::EWKT_PATTERN, $geo, $matches)) { |
|
101
|
11 |
|
$coords = str_replace(['(', ')'], ['[', ']'], preg_replace('/([\d\.-]+)\s+([\d\.-]+)/', "[$1,$2]", $matches[4])); |
|
102
|
11 |
|
if (strtolower($matches[3]) != 'point') { |
|
103
|
6 |
|
$coords = "[$coords]"; |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
return [ |
|
107
|
11 |
|
'srid' => $matches[1], |
|
108
|
11 |
|
'type' => self::TYPES[strtolower($matches[3])], |
|
109
|
11 |
|
'coordinates' => json_decode($coords, true)[0], |
|
110
|
|
|
]; |
|
111
|
|
|
} |
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
14 |
|
public static function split_ewkt($ewkt, $fallbackSrid = null) |
|
115
|
|
|
{ |
|
116
|
14 |
|
$fallbackSrid = $fallbackSrid ?: Config::inst()->get(self::class, 'default_srid'); |
|
117
|
|
|
|
|
118
|
14 |
|
if (preg_match(GIS::EWKT_PATTERN, $ewkt, $matches)) { |
|
119
|
14 |
|
$wkt = $matches[2]; |
|
120
|
14 |
|
$srid = (int)$matches[1]; |
|
121
|
|
|
} else { |
|
122
|
|
|
$wkt = $ewkt; |
|
123
|
|
|
$srid = (int)$fallbackSrid; |
|
124
|
|
|
} |
|
125
|
14 |
|
return [$wkt, $srid]; |
|
126
|
|
|
} |
|
127
|
|
|
|
|
128
|
5 |
|
public static function get_type($geo, $useBestGuess = false) |
|
|
|
|
|
|
129
|
|
|
{ |
|
130
|
5 |
|
if (is_array($geo) && isset($geo['type'])) { |
|
131
|
|
|
return self::TYPES[strtolower($geo['type'])]; |
|
132
|
5 |
|
} elseif (is_array($geo)) { |
|
133
|
1 |
|
$geo = self::to_ewkt($geo); |
|
134
|
|
|
} |
|
135
|
5 |
|
if (preg_match( |
|
136
|
5 |
|
'/;(' . implode('|', array_keys(self::TYPES)) . ')\(/i', |
|
137
|
5 |
|
strtolower(substr($geo, 8, 30)), |
|
138
|
5 |
|
$matches |
|
139
|
|
|
)) { |
|
140
|
5 |
|
return self::TYPES[$matches[1]]; |
|
141
|
|
|
} |
|
142
|
|
|
} |
|
143
|
|
|
|
|
144
|
|
|
/** |
|
145
|
|
|
* reproject an array representation of a geometry to the given srid |
|
146
|
|
|
*/ |
|
147
|
7 |
|
public static function reproject($geo, $toSrid = 4326) |
|
148
|
|
|
{ |
|
149
|
7 |
|
$array = self::to_array($geo); |
|
150
|
|
|
|
|
151
|
7 |
|
$fromSrid = $array['srid']; |
|
152
|
7 |
|
$fromCoordinates = $array['coordinates']; |
|
153
|
7 |
|
$type = $array['type']; |
|
154
|
|
|
|
|
155
|
7 |
|
if ($fromSrid != $toSrid) { |
|
156
|
1 |
|
$fromProj = self::get_proj4($fromSrid); |
|
157
|
1 |
|
$toProj = self::get_proj4($toSrid); |
|
158
|
1 |
|
$toCoordinates = self::reproject_array($fromCoordinates, $fromProj, $toProj); |
|
159
|
|
|
} else { |
|
160
|
6 |
|
$toCoordinates = $fromCoordinates; |
|
161
|
|
|
} |
|
162
|
|
|
|
|
163
|
|
|
return [ |
|
164
|
7 |
|
'srid' => $toSrid, |
|
165
|
7 |
|
'type' => $type, |
|
166
|
7 |
|
'coordinates' => $toCoordinates, |
|
167
|
|
|
]; |
|
168
|
|
|
} |
|
169
|
|
|
|
|
170
|
|
|
/** |
|
171
|
|
|
* @var proj4php instance |
|
172
|
|
|
*/ |
|
173
|
|
|
protected static $proj4; |
|
174
|
|
|
|
|
175
|
1 |
|
protected static function get_proj4($srid) |
|
176
|
|
|
{ |
|
177
|
1 |
|
self::$proj4 = self::$proj4 ?: new Proj4php(); |
|
178
|
|
|
|
|
179
|
1 |
|
if (!self::$proj4->hasDef('EPSG:' . $srid)) { |
|
180
|
1 |
|
$projDefs = Config::inst()->get(self::class, 'projections'); |
|
181
|
1 |
|
if (!isset($projDefs[$srid])) { |
|
182
|
|
|
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."); |
|
183
|
|
|
} |
|
184
|
1 |
|
self::$proj4->addDef('EPSG:' . $srid, $projDefs[$srid]); |
|
185
|
|
|
} |
|
186
|
|
|
|
|
187
|
1 |
|
return new Proj('EPSG:' . $srid, self::$proj4); |
|
188
|
|
|
} |
|
189
|
|
|
|
|
190
|
|
|
protected static function reproject_array($coordinates, $fromProj, $toProj) |
|
191
|
|
|
{ |
|
192
|
1 |
|
return self::each($coordinates, function($coordinate) use ($fromProj, $toProj) { |
|
193
|
1 |
|
return array_slice(self::$proj4->transform($toProj, new Point($coordinate[0], $coordinate[1], $fromProj))->toArray(), 0, 2); |
|
194
|
1 |
|
}); |
|
195
|
|
|
} |
|
196
|
|
|
|
|
197
|
5 |
|
public static function each($coordinates, $callback) |
|
198
|
|
|
{ |
|
199
|
5 |
|
if (isset($coordinates['coordinates'])) { |
|
200
|
4 |
|
$coordinates = $coordinates['coordinates']; |
|
201
|
|
|
} |
|
202
|
|
|
|
|
203
|
5 |
|
if (is_array($coordinates[0])) { |
|
204
|
2 |
|
foreach ($coordinates as &$coordinate) { |
|
205
|
2 |
|
$coordinate = self::each($coordinate, $callback); |
|
206
|
|
|
} |
|
207
|
2 |
|
return $coordinates; |
|
208
|
|
|
} |
|
209
|
|
|
|
|
210
|
5 |
|
return $callback($coordinates); |
|
211
|
|
|
} |
|
212
|
|
|
|
|
213
|
1 |
|
public static function distance($geo1, $geo2) |
|
214
|
|
|
{ |
|
215
|
1 |
|
return DB::query('select ' . DB::get_schema()->translateDistanceQuery($geo1, $geo2))->value(); |
|
|
|
|
|
|
216
|
|
|
} |
|
217
|
|
|
} |
|
218
|
|
|
|
smindel /
silverstripe-gis
Loading history...
