private Set mergeInnerPolygons()

in baremaps-core/src/main/java/org/apache/baremaps/openstreetmap/function/RelationGeometryBuilder.java [125:145]

• 21 lines of code
• 8 McCabe index (conditional complexity)

  private Set<Polygon> mergeInnerPolygons(Set<Polygon> innerPolygons) {
    Set<Polygon> usedPolygons = new HashSet<>();
    Set<Polygon> mergedPolygons = new HashSet<>();
    for (Polygon p1 : innerPolygons) {
      if (!usedPolygons.contains(p1)) {
        Set<Polygon> unionPolygons = new HashSet<>();
        unionPolygons.add(p1);
        for (Polygon p2 : innerPolygons) {
          if (!p1.equals(p2) && (p1.touches(p2) || p1.overlaps(p2))) {
            unionPolygons.add(p2);
            usedPolygons.add(p2);
          }
        }
        Geometry union = CascadedPolygonUnion.union(unionPolygons);
        for (Object polygon : PolygonExtracter.getPolygons(union)) {
          mergedPolygons.add((Polygon) polygon);
        }
      }
    }
    return mergedPolygons;
  }