Method importMap

src/core/map.cpp:616–651

QHash<const Symbol*, Symbol*> Map::importMap(
        const Map& imported_map,
        ImportMode mode,
        std::vector<bool>* filter,
        int symbol_insert_pos,
        bool merge_duplicate_symbols)
{
	QTransform q_transform;
	if (mode.testFlag(GeorefImport))
	{
		/// \todo Test and review import of georeferenced and non-georeferenced maps, in all combinations.
		/// \todo Handle rotation of patterns and text, cf. Object::transform.
		const auto& georef = getGeoreferencing();
		const auto& other_georef = imported_map.getGeoreferencing();
		const auto src_origin = MapCoordF { other_georef.getMapRefPoint() };
		
		bool ok0, ok1, ok2;
		PassPointList passpoints;
		passpoints.resize(3);
		passpoints[0].src_coords  = src_origin;
		passpoints[0].dest_coords = georef.toMapCoordF(&other_georef, passpoints[0].src_coords, &ok0);
		passpoints[1].src_coords  = src_origin + MapCoordF { 128.0, 0.0 }; // 128 mm off horizontally
		passpoints[1].dest_coords = georef.toMapCoordF(&other_georef, passpoints[1].src_coords, &ok1);
		passpoints[2].src_coords  = src_origin + MapCoordF { 0.0, 128.0 }; // 128 mm off vertically
		passpoints[2].dest_coords = georef.toMapCoordF(&other_georef, passpoints[2].src_coords, &ok2);
		if (ok0 && ok1 && ok2
		    && !passpoints.estimateNonIsometricSimilarityTransform(&q_transform))
		{
			/// \todo proper error message
			qDebug("Failed to calculate transformation");
			q_transform.reset();
		}
	}
	
	return importMap(imported_map, mode & ~GeorefImport, q_transform, filter, symbol_insert_pos, merge_duplicate_symbols);
}


bool Map::loadFrom(const QString& path, MapView* view)