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MAPG-111 query map area from DB

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modify calculations to be in square km (instead of m)
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bence committed 2020-06-12 21:55:04 +02:00
1 parent 4d7c86fd1b
commit 7159867db0
6 files changed
+27 -28
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src/Util/Geo/Bounds.php
+4 -4
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@@ -2,7 +2,7 @@
class Bounds
{
const ONE_DEGREE_OF_LATITUDE_IN_METER = 111132.954;
const ONE_DEGREE_OF_LATITUDE_IN_KM = 111.132954;
private float $southLat = 90.0;
private float $westLng = 180.0;
@@ -84,9 +84,9 @@ class Bounds
$dLat = $this->northLat - $this->southLat;
$dLng = $this->eastLng - $this->westLng;
$m = $dLat * static::ONE_DEGREE_OF_LATITUDE_IN_METER;
$a = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_METER * cos(deg2rad($this->northLat));
$c = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_METER * cos(deg2rad($this->southLat));
$m = $dLat * static::ONE_DEGREE_OF_LATITUDE_IN_KM;
$a = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_KM * cos(deg2rad($this->northLat));
$c = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_KM * cos(deg2rad($this->southLat));
return $m * ($a + $c) / 2;
}