|
1
|
|
|
<?php |
|
2
|
|
|
namespace Algorithms\Dijkstra; |
|
3
|
|
|
|
|
4
|
|
|
class Creator |
|
5
|
|
|
{ |
|
6
|
|
|
private $points = array(); |
|
7
|
|
|
private $labels = array(); |
|
8
|
|
|
|
|
9
|
|
|
private static function checkPointID($point) |
|
10
|
|
|
{ |
|
11
|
|
|
if (is_int($point) && ($point > 0)) { |
|
12
|
|
|
return 'int'; |
|
13
|
|
|
} else { |
|
14
|
|
|
return 'string'; |
|
15
|
|
|
} |
|
16
|
|
|
} |
|
17
|
|
|
|
|
18
|
|
|
private function randNewID() |
|
19
|
|
|
{ |
|
20
|
|
|
do { |
|
21
|
|
|
$rand = mt_rand(); |
|
22
|
|
|
} while (isset($this->points[$rand])); |
|
23
|
|
|
|
|
24
|
|
|
return $rand; |
|
25
|
|
|
} |
|
26
|
|
|
|
|
27
|
|
|
private function createPointFromID($point_id, $label = null) |
|
28
|
|
|
{ |
|
29
|
|
|
if (empty($label)) { |
|
30
|
|
|
$new_point = Point::create($point_id); |
|
31
|
|
|
} else { |
|
32
|
|
|
$new_point = Point::create($point_id, $label); |
|
33
|
|
|
} |
|
34
|
|
|
|
|
35
|
|
|
$this->points[$point_id] = $new_point; |
|
36
|
|
|
|
|
37
|
|
|
return $new_point; |
|
38
|
|
|
} |
|
39
|
|
|
|
|
40
|
|
|
public function addPoint($point) |
|
41
|
|
|
{ |
|
42
|
|
|
if (Point::checkPoint($point)) { |
|
43
|
|
|
$id = $point->getID(); |
|
44
|
|
|
|
|
45
|
|
|
$this->points[$id] = $point; |
|
46
|
|
|
|
|
47
|
|
|
$label = $point->getLabel(); |
|
48
|
|
|
if (!empty($label)) { |
|
49
|
|
|
$this->labels[$label] = $id; |
|
50
|
|
|
} |
|
51
|
|
|
|
|
52
|
|
|
return $point; |
|
53
|
|
|
} elseif (self::checkPointID($point) == 'int') { |
|
54
|
|
|
if (!isset($this->points[$point])) { |
|
55
|
|
|
return self::createPointFromID($point); |
|
56
|
|
|
} else { |
|
57
|
|
|
throw new CreatorException('Point was added earlier'); |
|
58
|
|
|
} |
|
59
|
|
|
} else { |
|
60
|
|
|
if (!isset($this->labels[$point])) { |
|
61
|
|
|
$id = $this->randNewID(); |
|
62
|
|
|
|
|
63
|
|
|
$this->labels[$point] = $id; |
|
64
|
|
|
|
|
65
|
|
|
return self::createPointFromID($id); |
|
66
|
|
|
} else { |
|
67
|
|
|
throw new CreatorException('Point was added earlier'); |
|
68
|
|
|
} |
|
69
|
|
|
} |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
public function getPoint($point_id) |
|
73
|
|
|
{ |
|
74
|
|
|
try { |
|
75
|
|
|
return $this->getPointOrFail($point_id); |
|
76
|
|
|
} catch (PointException $e) { |
|
77
|
|
|
return NULL; |
|
78
|
|
|
} |
|
79
|
|
|
} |
|
80
|
|
|
|
|
81
|
|
|
public function getPointOrFail($point_id) |
|
82
|
|
|
{ |
|
83
|
|
|
if (isset($this->points[$point_id])) { |
|
84
|
|
|
return $this->points[$point_id]; |
|
85
|
|
|
} elseif (isset($this->labels[$point_id])) { |
|
86
|
|
|
return $this->points[$this->labels[$point_id]]; |
|
87
|
|
|
} else { |
|
88
|
|
|
throw new PointException('Point not exists'); |
|
89
|
|
|
} |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
public function createConnections() |
|
93
|
|
|
{ |
|
94
|
|
|
$relations = array(); |
|
95
|
|
|
|
|
96
|
|
|
foreach ($this->points as $point_id => $point) { |
|
97
|
|
|
$relations[$point_id] = $point->getDinstances(); |
|
98
|
|
|
|
|
99
|
|
|
foreach ($relations[$point_id] as $array_to_analyze) { |
|
100
|
|
|
if (!isset($relations[$array_to_analyze[0]])) { |
|
101
|
|
|
$relations[$array_to_analyze[0]] = array(); |
|
102
|
|
|
} |
|
103
|
|
|
} |
|
104
|
|
|
} |
|
105
|
|
|
|
|
106
|
|
|
return $relations; |
|
107
|
|
|
} |
|
108
|
|
|
} |
|
109
|
|
|
|
PHPAlgorithms /
Dijkstra-s-algorithm
