make it easier to hit the right line in overlays (workaround, fixes #…

…5849)

app/src/main/java/de/westnordost/streetcomplete/screens/main/map/MainMapFragment.kt

@@ -583,7 +583,7 @@ class MainMapFragment : MapFragment(), ShowsGeometryMarkers {
         private const val MIN_TRACK_ACCURACY = 20f
         private const val MAX_TIME_BETWEEN_LOCATIONS = 60L * 1000 // 1 minute
 
-        private const val CLICK_AREA_SIZE_IN_DP = 24
+        private const val CLICK_AREA_SIZE_IN_DP = 28
     }
 }
 

app/src/main/java/de/westnordost/streetcomplete/screens/main/map/maplibre/MapLibreMap.kt

@@ -17,11 +17,17 @@ fun MapLibreMap.queryRenderedFeatures(
     radius: Float,
     vararg layerIds: String
 ): List<Feature> {
-    val searchArea = RectF(
-        coordinates.x - radius,
-        coordinates.y - radius,
-        coordinates.x + radius,
-        coordinates.y + radius
-    )
-    return queryRenderedFeatures(searchArea, *layerIds)
+    // first try without radius. If nothing found, only then expand search area
+    var result = queryRenderedFeatures(coordinates, *layerIds)
+    if (result.isNotEmpty()) return result
+    // then, try with small radius....
+    result = queryRenderedFeatures(coordinates.expandBy(radius/2), *layerIds)
+    if (result.isNotEmpty()) return result
+
+    return queryRenderedFeatures(coordinates.expandBy(radius), *layerIds)
+
+    // this is kind of a workaround. We'd need is this function implemented in MapLibre proper. See
+    // https://github.com/maplibre/maplibre-native/issues/2781
 }
+
+private fun PointF.expandBy(a: Float) = RectF(x - a, y - a, x + a, y + a)