Method connectPathsClicked

src/gui/map/map_editor.cpp:3141–3327

}

void MapEditorController::connectPathsClicked()
{
	std::vector<Object*> objects;
	std::vector<Object*> undo_objects;
	std::vector<Object*> deleted_objects;
	
	// Collect all objects in question
	objects.reserve(map->getNumSelectedObjects());
	undo_objects.reserve(map->getNumSelectedObjects());
	for (auto* object : map->selectedObjects())
	{
		if (object->getSymbol()->getContainedTypes() & Symbol::Line && object->getType() == Object::Path)
		{
			object->update();
			objects.push_back(object);
			undo_objects.push_back(nullptr);
		}
	}
	
	AddObjectsUndoStep* add_step = nullptr;
	MapPart* part = map->getCurrentPart();
	
/// \todo Fix connectPathsClicked()
#ifndef __clang_analyzer__
	while (true)
	{
		// Find the closest pair of open ends of objects with the same symbol,
		// which is closer than a threshold
		PathObject* best_object_a = nullptr;
		PathObject* best_object_b = nullptr;
		int best_object_a_index = 0;
		int best_object_b_index = 0;
		auto best_part_a = PathPartVector::size_type { 0 };
		auto best_part_b = PathPartVector::size_type { 0 };
		bool best_part_a_begin = false;
		bool best_part_b_begin = false;
		float best_dist_sq = std::numeric_limits<float>::max();
		
		for (int i = 0; i < (int)objects.size(); ++i)
		{
			PathObject* a = reinterpret_cast<PathObject*>(objects[i]);
			
			// Choose connection threshold as maximum of 0.35mm, 1.5 * largest line extent, and 6 pixels
			// TODO: instead of 6 pixels, use a physical size as soon as screen dpi is in the settings
			auto close_distance_sq = qMax(0.35, 1.5 * a->getSymbol()->calculateLargestLineExtent());
			close_distance_sq = qMax(close_distance_sq, 0.001 * main_view->pixelToLength(6));
			close_distance_sq = qPow(close_distance_sq, 2);
			
			auto num_parts = a->parts().size();
			for (PathPartVector::size_type path_part_a = 0; path_part_a < num_parts; ++path_part_a)
			{
				PathPart& part = a->parts()[path_part_a];
				if (!part.isClosed())
				{
					PathObject* b;
					int b_index;
					int path_part_b;
					bool path_part_b_begin;