MAPG-111 query map area from DB

modify calculations to be in square km (instead of m)

src/Controller/GameController.php

@@ -44,7 +44,7 @@ class GameController
         if (!($state = $session->get('state')) || $state['mapId'] !== $mapId) {
             $session->set('state', [
                 'mapId' => $mapId,
-                'area' => $bounds->calculateApproximateArea(),
+                'area' => $map['area'],
                 'rounds' => []
             ]);
         }

src/Controller/GameFlowController.php

@@ -123,7 +123,7 @@ class GameFlowController
 
     private function calculateScore(float $distance, float $area): int
     {
-        $goodness = 1.0 - ($distance / sqrt($area));
+        $goodness = 1.0 - ($distance / (sqrt($area) * 1000));
 
         return (int) round(pow(static::MAX_SCORE, $goodness));
     }

src/Controller/MapAdminController.php

@@ -118,7 +118,8 @@ class MapAdminController implements ISecured
             'bound_south_lat' => $mapBounds->getSouthLat(),
             'bound_west_lng' => $mapBounds->getWestLng(),
             'bound_north_lat' => $mapBounds->getNorthLat(),
-            'bound_east_lng' => $mapBounds->getEastLng()
+            'bound_east_lng' => $mapBounds->getEastLng(),
+            'area' => $mapBounds->calculateApproximateArea(),
         ];
 
         if (isset($_POST['name'])) {

src/Controller/MapsController.php

@@ -6,7 +6,6 @@ use MapGuesser\Interfaces\Authentication\IUser;
 use MapGuesser\Interfaces\Database\IResultSet;
 use MapGuesser\Interfaces\Request\IRequest;
 use MapGuesser\Interfaces\Response\IContent;
-use MapGuesser\Util\Geo\Bounds;
 use MapGuesser\Response\HtmlContent;
 
 class MapsController
@@ -29,6 +28,7 @@ class MapsController
             ['maps', 'bound_west_lng'],
             ['maps', 'bound_north_lat'],
             ['maps', 'bound_east_lng'],
+            ['maps', 'area'],
             new RawExpression('COUNT(places.id) AS num_places')
         ]);
         $select->leftJoin('places', ['places', 'map_id'], '=', ['maps', 'id']);
@@ -39,9 +39,7 @@ class MapsController
 
         $maps = [];
         while ($map = $result->fetch(IResultSet::FETCH_ASSOC)) {
-            $bounds = Bounds::createDirectly($map['bound_south_lat'], $map['bound_west_lng'], $map['bound_north_lat'], $map['bound_east_lng']);
+            $map['area'] = $this->formatMapAreaForHuman($map['area']);
-
-            $map['area'] = $this->formatMapAreaForHuman($bounds->calculateApproximateArea());
 
             $maps[] = $map;
         }
@@ -53,29 +51,29 @@ class MapsController
 
     private function formatMapAreaForHuman(float $area): array
     {
-        if ($area < 100.0) {
+        if ($area < 0.01) {
+            $digits = 0;
+            $rounded = round($area * 1000000.0, -2);
+            $unit = 'm';
+        } elseif ($area < 0.1) {
+            $digits = 0;
+            $rounded = round($area * 1000000.0, -3);
+            $unit = 'm';
+        } elseif ($area < 1.0) {
+            $digits = 2;
+            $rounded = round($area, 2);
+            $unit = 'km';
+        } elseif ($area < 100.0) {
             $digits = 0;
             $rounded = round($area, 0);
-            $unit = 'm';
+            $unit = 'km';
-        } elseif ($area < 100000.0) {
+        } elseif ($area < 10000.0) {
             $digits = 0;
             $rounded = round($area, -2);
-            $unit = 'm';
-        } elseif ($area < 1000000.0) {
-            $digits = 2;
-            $rounded = round($area / 1000000.0, 2);
-            $unit = 'km';
-        } elseif ($area < 100000000.0) {
-            $digits = 0;
-            $rounded = round($area / 1000000.0, 0);
-            $unit = 'km';
-        } elseif ($area < 10000000000.0) {
-            $digits = 0;
-            $rounded = round($area / 1000000.0, -2);
             $unit = 'km';
         } else {
             $digits = 0;
-            $rounded = round($area / 1000000.0, -4);
+            $rounded = round($area, -4);
             $unit = 'km';
         }
 

src/Repository/MapRepository.php

@@ -8,7 +8,7 @@ class MapRepository
     public function getById(int $mapId)
     {
         $select = new Select(\Container::$dbConnection, 'maps');
-        $select->columns(['id', 'name', 'description', 'bound_south_lat', 'bound_west_lng', 'bound_north_lat', 'bound_east_lng']);
+        $select->columns(['id', 'name', 'description', 'bound_south_lat', 'bound_west_lng', 'bound_north_lat', 'bound_east_lng', 'area']);
         $select->whereId($mapId);
 
         return $select->execute()->fetch(IResultSet::FETCH_ASSOC);

src/Util/Geo/Bounds.php

@@ -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;
+        $m = $dLat * static::ONE_DEGREE_OF_LATITUDE_IN_KM;
-        $a = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_METER * cos(deg2rad($this->northLat));
+        $a = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_KM * cos(deg2rad($this->northLat));
-        $c = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_METER * cos(deg2rad($this->southLat));
+        $c = $dLng * static::ONE_DEGREE_OF_LATITUDE_IN_KM * cos(deg2rad($this->southLat));
 
         return $m * ($a + $c) / 2;
     }