fix: allow scale to be a GeoStylerFunction

geostyler · Dec 5, 2023 · 73d2271 · 73d2271
1 parent 113ef5e
commit 73d2271
Showing 1 changed file with 14 additions and 3 deletions.
diff --git a/src/MapboxStyleParser.ts b/src/MapboxStyleParser.ts
@@ -432,9 +432,20 @@ export class MapboxStyleParser implements StyleParser<Omit<MbStyle, 'sources'>>
 
     // mabpox icon-size scales the image and does not define its size
     if (layout?.['icon-size'] && image) {
-      const scale = mb2gsExpression<number>(layout['icon-size']) as number;
-      // mulitply the mb icon-size with the width of the sprite to get the scale
-      symbolizer.size = scale * (image.size[0] as number);
+      const scale = mb2gsExpression<number>(layout['icon-size']);
+
+      // multiply the mb icon-size with the width of the sprite to get the scale
+      if (isGeoStylerFunction(scale)) {
+        symbolizer.size = {
+          name: 'mul',
+          args: [
+            scale,
+            image.size[0]
+          ]
+        };
+      } else if (scale) {
+        symbolizer.size = scale * (image.size[0] as number);
+      }
 
       // Add icon-size to metadata
       set(