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| 1 | <?php |
| 2 | namespace MultiMaps; |
| 3 | |
| 4 | /** |
| 5 | * Bounds class for determine the boundaries of the map elements |
| 6 | * |
| 7 | * @file Bounds.php |
| 8 | * @ingroup MultiMaps |
| 9 | * @author Pavel Astakhov <pastakhov@yandex.ru> |
| 10 | * @license GPL-2.0-or-later |
| 11 | * @property-read Point $ne North East point |
| 12 | * @property-read Point $sw South West point |
| 13 | * @property-read Point $center Center point of bounds |
| 14 | * @property-read float $diagonal Diagonal of bounds |
| 15 | */ |
| 16 | class Bounds { |
| 17 | |
| 18 | /** |
| 19 | * North East Point |
| 20 | * @var Point |
| 21 | */ |
| 22 | protected $northEast = false; |
| 23 | |
| 24 | /** |
| 25 | * South West Point |
| 26 | * @var Point |
| 27 | */ |
| 28 | protected $southWest = false; |
| 29 | |
| 30 | function __construct( $coordinates = null ) { |
| 31 | if ( $coordinates !== null ) { |
| 32 | $this->extend( $coordinates ); |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | /** |
| 37 | * Extend bounds |
| 38 | * @param array $coordinates Array of Point objects |
| 39 | */ |
| 40 | public function extend( $coordinates ) { |
| 41 | if ( $coordinates instanceof Point ) { |
| 42 | $coordinates = [ $coordinates ]; |
| 43 | } |
| 44 | foreach ( $coordinates as $point ) { |
| 45 | $bounds = $point->bounds; |
| 46 | if ( !$this->isValid() ) { |
| 47 | if ( $bounds ) { |
| 48 | $this->northEast = $bounds->ne; |
| 49 | $this->southWest = $bounds->sw; |
| 50 | } else { |
| 51 | $this->northEast = new Point( $point->lat, $point->lon ); |
| 52 | $this->southWest = new Point( $point->lat, $point->lon ); |
| 53 | } |
| 54 | } else { |
| 55 | if ( $bounds != false ) { |
| 56 | if ( $bounds->sw->lat < $this->southWest->lat ) { |
| 57 | $this->southWest->lat = $bounds->sw->lat; |
| 58 | } elseif ( $bounds->ne->lat > $this->northEast->lat ) { |
| 59 | $this->northEast->lat = $bounds->ne->lat; |
| 60 | } |
| 61 | |
| 62 | if ( $bounds->sw->lon < $this->southWest->lon ) { |
| 63 | $this->southWest->lon = $bounds->sw->lon; |
| 64 | } elseif ( $bounds->ne->lon > $this->northEast->lon ) { |
| 65 | $this->northEast->lon = $bounds->ne->lon; |
| 66 | } |
| 67 | } else { |
| 68 | if ( $point->lat < $this->southWest->lat ) { |
| 69 | $this->southWest->lat = $point->lat; |
| 70 | } elseif ( $point->lat > $this->northEast->lat ) { |
| 71 | $this->northEast->lat = $point->lat; |
| 72 | } |
| 73 | |
| 74 | if ( $point->lon < $this->southWest->lon ) { |
| 75 | $this->southWest->lon = $point->lon; |
| 76 | } elseif ( $point->lon > $this->northEast->lon ) { |
| 77 | $this->northEast->lon = $point->lon; |
| 78 | } |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Returns center of bounds |
| 86 | * @return bool|\MultiMaps\Point |
| 87 | */ |
| 88 | public function getCenter() { |
| 89 | if ( !$this->isValid() ) { |
| 90 | return false; |
| 91 | } |
| 92 | |
| 93 | return new \MultiMaps\Point( |
| 94 | ( $this->southWest->lat + $this->northEast->lat ) / 2, |
| 95 | ( $this->southWest->lon + $this->northEast->lon ) / 2 |
| 96 | ); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Checks if the object is valid |
| 101 | * @return bool |
| 102 | */ |
| 103 | public function isValid() { |
| 104 | return ( $this->northEast !== false && $this->southWest !== false ); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Returns an array of data |
| 109 | * @return array |
| 110 | */ |
| 111 | public function getData() { |
| 112 | if ( $this->isValid() ) { |
| 113 | return [ |
| 114 | 'ne' => $this->northEast->getData(), |
| 115 | 'sw' => $this->southWest->getData(), |
| 116 | ]; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | public function __get( $name ) { |
| 121 | $name = strtolower( $name ); |
| 122 | switch ( $name ) { |
| 123 | case 'ne': |
| 124 | return $this->northEast; |
| 125 | case 'sw': |
| 126 | return $this->southWest; |
| 127 | case 'center': |
| 128 | return $this->getCenter(); |
| 129 | case 'diagonal': |
| 130 | return GeoCoordinate::getDistanceInMeters( $this->northEast->lat, $this->northEast->lon, $this->southWest->lat, $this->southWest->lon ); |
| 131 | } |
| 132 | return null; |
| 133 | } |
| 134 | |
| 135 | } |