From 8906bed1e75c4d97cbc1d109fa6cc4e9cbebac14 Mon Sep 17 00:00:00 2001
From: evlist <vdv@dyomedea.com>
Date: Thu, 17 Nov 2022 23:11:33 +0100
Subject: [PATCH] Minor enhancement.

---
 src/components/map/Marker.tsx | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/components/map/Marker.tsx b/src/components/map/Marker.tsx
index edaa916..637652b 100644
--- a/src/components/map/Marker.tsx
+++ b/src/components/map/Marker.tsx
@@ -33,8 +33,10 @@ export const Marker: react.FC<MarkerProperties> = (props: MarkerProperties) => {
     return null;
   }
 
-  const x = lon2tile(props.coordinates.lon, props.keyObject.zoomLevel);
-  const y = lat2tile(props.coordinates.lat, props.keyObject.zoomLevel);
+  const x0 = lon2tile(props.coordinates.lon, 0);
+  const y0 = lat2tile(props.coordinates.lat, 0);
+  const x = x0 * 2 ** props.keyObject.zoomLevel;
+  const y = y0 * 2 ** props.keyObject.zoomLevel;
   if (
     x < props.viewPort.topLeft.x ||
     x > props.viewPort.bottomRight.x + 1 ||
@@ -50,7 +52,10 @@ export const Marker: react.FC<MarkerProperties> = (props: MarkerProperties) => {
   cache.set({
     cacheId: 'points',
     key: props.id,
-    value: { id: props.id, coordinates: props.coordinates },
+    value: {
+      coordinates: props.coordinates,
+      point: { x: x0, y: y0 },
+    },
   });
   return (
     <g