Limiter les points par distance en fonction du zoom

src/Models/d.poi.php

@@ -468,18 +468,27 @@ class Pois
 		$con = sql_connect();
 		pg_query($con, "SET jit=off");
 
+		$grid = pow(2, 9 - $z) * 2000;
+
 		$sql = "WITH tile AS ( SELECT
 					ST_TileEnvelope($1, $2, $3) AS tile_geom
 				),
 
-			mvtgeom AS ( SELECT CAST(contents.id AS integer) AS id,
+			mvtgeom AS (
+			    SELECT DISTINCT ON (
+			            FLOOR(ST_X(ST_Transform(specs.geom, 3857)) / $4),
+			            FLOOR(ST_Y(ST_Transform(specs.geom, 3857)) / $4)
+			        )
+			        CAST(contents.id AS integer) AS id,
 			        contents.poi_type::text AS poi_type,
 			        contents.permalink::text AS permalink,
-					ST_AsMVTGeom( ST_Transform(
-									specs.geom,
-									3857
-								),
-						tile.tile_geom, 4096, 64, true ) AS geom
+			        ST_AsMVTGeom(
+			            ST_Transform(specs.geom, 3857),
+			            tile.tile_geom,
+			            4096,
+			            64,
+			            true
+			        ) AS geom
 			    FROM content_version_poi_specifications specs
 			    INNER JOIN content_versions
 			        ON specs.content_version_id = content_versions.id
@@ -488,10 +497,13 @@ class Pois
 			    INNER JOIN contents
 			        ON content_locales.content_id = contents.id
 			    CROSS JOIN tile
-					
 			    WHERE contents.type = 'poi'
 			        AND specs.geom IS NOT NULL
 			        AND ST_Transform(specs.geom, 3857) && tile.tile_geom
+			    ORDER BY
+			        FLOOR(ST_X(ST_Transform(specs.geom, 3857)) / $4),
+			        FLOOR(ST_Y(ST_Transform(specs.geom, 3857)) / $4),
+			        contents.id
 			)
 			SELECT ST_AsMVT( mvtgeom, 'pois', 4096, 'geom' )
 			FROM mvtgeom
@@ -500,7 +512,7 @@ class Pois
 		$result = pg_query_params(
 			$con,
 			$sql,
-			[$z, $x, $y]
+			[$z, $x, $y, $grid]
 		);
 
 		if (!$result) {