functional: don't show feature borders for shapes -- resolves ghost line issue.

Author: dbrnz

src/layers/index.ts

@@ -100,6 +100,7 @@ class FlatMapStylingLayer
                     }
                 })
             : []
+        this.#layerOptions.hasImageLayers = (imageLayers.length > 0)
 
         // Originally only for body layer on AC maps but now also used
         // for detail background (FC and AC)
@@ -144,7 +145,6 @@ class FlatMapStylingLayer
         const vectorTileSource = this.#map.getSource(VECTOR_TILES_SOURCE)
         const haveVectorLayers = !!vectorTileSource
 
-        // if no image layers then make feature borders (and lines?) more visible...??
         if (haveVectorLayers) {
             const featuresVectorSource = this.#vectorSourceId(FEATURES_LAYER)
             const vectorFeatures = vectorTileSource.vectorLayerIds!.includes(featuresVectorSource)

src/layers/styling.ts

@@ -61,6 +61,7 @@ export interface StylingOptions extends StyleLayerOptions
     excludeAnnotated?: boolean
     colour?: string
     dimmed?: boolean
+    hasImageLayers?: boolean
     opacity?: number
     showNerveCentrelines?: boolean
 }
@@ -424,6 +425,9 @@ export class FeatureBorderLayer extends VectorStyleLayer
         }
         lineOpacity.push(['boolean', ['feature-state', 'selected'], false], 0.9)
         lineOpacity.push(['boolean', ['feature-state', 'annotated'], false], 0.9)
+        if (options.hasImageLayers) {
+            lineOpacity.push(['has', 'shape-type'], 0)
+        }
         if (activeRasterLayer) {
             lineOpacity.push((outlined && !dimmed) ? 0.3 : 0.1)
         } else {