[BUG] Chart & pixelratio #1109 #1126

Author: Viglino

examples/style/map.style.chart.html

@@ -17,13 +17,12 @@
   <!-- Openlayers -->
   <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
 
-  
   <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
   <!--
-  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@v10.2.0/dist/ol.js"></script>
-  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@v9.2.0/dist/ol.js"></script>
-  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@v8.1.0/dist/ol.js"></script>
-  <script type="text/javascript" src="https://openlayers.org/en/v6.15.1/build/ol.js"></script>
+    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@v10.2.0/dist/ol.js"></script>
+    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@v9.2.0/dist/ol.js"></script>
+    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@v8.1.0/dist/ol.js"></script>
+    <script type="text/javascript" src="https://openlayers.org/en/v6.15.1/build/ol.js"></script>
   -->
 
 
@@ -73,6 +72,8 @@ <h2>Options:</h2>
 
   <script type="text/javascript">
 
+  console.log('ol@' + ol.util.VERSION)
+
   // Layers
   var layer = new ol.layer.Geoportail({ layer: 'GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2' })
 

src/style/Chart.js

@@ -157,8 +157,8 @@ var ol_style_Chart = class olstyleChart extends ol_style_RegularShape {
     // Get canvas
     var canvas = super.getImage(pixelratio);
 
-    if (this._done) return canvas;
-    this._done = true
+    if (this._done === pixelratio) return canvas;
+    this._done = pixelratio
 
     var strokeStyle;
     var strokeWidth = 0;