|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* This file contains the BinaryReader class. |
|
4
|
|
|
* For more information see the class description below. |
|
5
|
|
|
* |
|
6
|
|
|
* @author Peter Bathory <[email protected]> |
|
7
|
|
|
* @since 2016-02-18 |
|
8
|
|
|
* |
|
9
|
|
|
* This code is open-source and licenced under the Modified BSD License. |
|
10
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
11
|
|
|
* file that was distributed with this source code. |
|
12
|
|
|
*/ |
|
13
|
|
|
namespace geoPHP\Adapter; |
|
14
|
|
|
|
|
15
|
|
|
use geoPHP\Geometry\Geometry; |
|
16
|
|
|
use geoPHP\Geometry\Point; |
|
17
|
|
|
|
|
18
|
|
|
/** |
|
19
|
|
|
* PHP Geometry <-> TWKB encoder/decoder |
|
20
|
|
|
* |
|
21
|
|
|
* "Tiny Well-known Binary is is a multi-purpose format for serializing vector geometry data into a byte buffer, |
|
22
|
|
|
* with an emphasis on minimizing size of the buffer." |
|
23
|
|
|
* @see https://github.com/TWKB/Specification/blob/master/twkb.md |
|
24
|
|
|
* |
|
25
|
|
|
* This implementation supports: |
|
26
|
|
|
* - reading and writing all geometry types (1-7) |
|
27
|
|
|
* - empty geometries |
|
28
|
|
|
* - extended precision (Z, M coordinates; custom precision) |
|
29
|
|
|
* Partially supports: |
|
30
|
|
|
* - bounding box: can read and write, but don't store readed boxes (API missing) |
|
31
|
|
|
* - size attribute: can read and write size attribute, but seeking is not supported |
|
32
|
|
|
* - ID list: can read and write, but API is completely missing |
|
33
|
|
|
*/ |
|
34
|
|
|
class TWKB implements GeoAdapter |
|
35
|
|
|
{ |
|
36
|
|
|
use TWKBReader, TWKBWriter; |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* @var Point |
|
40
|
|
|
*/ |
|
41
|
|
|
protected $lastPoint; |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* @var array<string, int> mapping of geometry types to TWKB type codes |
|
45
|
|
|
*/ |
|
46
|
|
|
protected static $typeMap = [ |
|
47
|
|
|
Geometry::POINT => 1, |
|
48
|
|
|
Geometry::LINESTRING => 2, |
|
49
|
|
|
Geometry::POLYGON => 3, |
|
50
|
|
|
Geometry::MULTI_POINT => 4, |
|
51
|
|
|
Geometry::MULTI_LINESTRING => 5, |
|
52
|
|
|
Geometry::MULTI_POLYGON => 6, |
|
53
|
|
|
Geometry::GEOMETRY_COLLECTION => 7 |
|
54
|
|
|
]; |
|
55
|
|
|
} |
|
56
|
|
|
|
swen100 /
geoPHP
