use opacity getter

Author: josxha

lib/src/annotation/circle_annotation_layer.dart

@@ -48,10 +48,10 @@ class CircleAnnotationLayer extends AnnotationLayer<Point> {
         'circle-radius': radius,
         'circle-color': color.toHexStringNoOpacity(),
         'circle-blur': blur,
-        'circle-opacity': color.opacity,
+        'circle-opacity': opacity,
         'circle-stroke-width': strokeWidth,
         'circle-stroke-color': strokeColor.toHexStringNoOpacity(),
-        'circle-stroke-opacity': strokeColor.opacity,
+        'circle-stroke-opacity': strokeOpacity,
       };
 
   @override

lib/src/annotation/polygon_annotation_layer.dart

@@ -22,7 +22,7 @@ class PolygonAnnotationLayer extends AnnotationLayer<Polygon> {
   @override
   Map<String, Object> getPaint() => {
         'fill-color': color.toHexStringNoOpacity(),
-        'fill-opacity': color.opacity,
+        'fill-opacity': opacity,
         'fill-outline-color': outlineColor.toHexStringNoOpacity(),
       };
 

lib/src/annotation/polyline_annotation_layer.dart

@@ -35,7 +35,7 @@ class PolylineAnnotationLayer extends AnnotationLayer<LineString> {
   @override
   Map<String, Object> getPaint() => {
         'line-color': color.toHexStringNoOpacity(),
-        'line-opacity': color.opacity,
+        'line-opacity': opacity,
         'line-width': width,
         'line-gap-width': gapWidth,
         if (dashArray case final List<int> dashArray)