From 9ef09512db7b2bb57e1e0517a41e620c26088e02 Mon Sep 17 00:00:00 2001
From: Joachim Schleicher <joachimsl@gmx.de>
Date: Tue, 10 Oct 2023 10:47:36 +0200
Subject: [PATCH] highlight: increase fillOpacity for polygons

sqrt gives larger increase for low opacities like 0.2
while preserving some (tiny) shine-through for large values like 0.8
and is limited to the desired range of (0,1]
---
 umap/static/umap/js/umap.features.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/umap/static/umap/js/umap.features.js b/umap/static/umap/js/umap.features.js
index 60dbc112..e058ba0d 100644
--- a/umap/static/umap/js/umap.features.js
+++ b/umap/static/umap/js/umap.features.js
@@ -822,6 +822,7 @@ L.U.PathMixin = {
 
   highlightPath: function () {
     this.parentClass.prototype.setStyle.call(this, {
+      fillOpacity: Math.sqrt(this.getDynamicOption('fillOpacity')),
       opacity: 1.0,
       weight: 1.3 * this.getDynamicOption('weight'),
     })
@@ -829,6 +830,7 @@ L.U.PathMixin = {
 
   resetPath: function () {
     this.parentClass.prototype.setStyle.call(this, {
+      fillOpacity: this.getDynamicOption('fillOpacity'),
       opacity: this.getDynamicOption('opacity'),
       weight: this.getDynamicOption('weight'),
     })