File indexing completed on 2024-12-08 10:16:03

 /*
     SPDX-FileCopyrightText: 2020 Volker Krause <vkrause@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "element.h"
 #include "pathutil.h"
 
 using namespace OSM;
 
 Id Element::id() const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return node()->id;
         case Type::Way:
             return way()->id;
         case Type::Relation:
             return relation()->id;
     }
     return {};
 }
 
 Coordinate Element::center() const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return node()->coordinate;
         case Type::Way:
             return way()->bbox.center();
         case Type::Relation:
             return relation()->bbox.center();
     }
 
     return {};
 }
 
 BoundingBox Element::boundingBox() const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return BoundingBox(node()->coordinate, node()->coordinate);
         case Type::Way:
             return way()->bbox;
         case Type::Relation:
             return relation()->bbox;
     }
 
     return {};
 }
 
 QByteArray Element::tagValue(TagKey key) const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return OSM::tagValue(*node(), key);
         case Type::Way:
             return OSM::tagValue(*way(), key);
         case Type::Relation:
             return OSM::tagValue(*relation(), key);
     }
 
     return {};
 }
 
 QByteArray Element::tagValue(const char *keyName) const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return OSM::tagValue(*node(), keyName);
         case Type::Way:
             return OSM::tagValue(*way(), keyName);
         case Type::Relation:
             return OSM::tagValue(*relation(), keyName);
     }
 
     return {};
 }
 
 QByteArray Element::tagValue(const char *keyName, const QLocale &locale) const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return OSM::tagValue(*node(), keyName, locale);
         case Type::Way:
             return OSM::tagValue(*way(), keyName, locale);
         case Type::Relation:
             return OSM::tagValue(*relation(), keyName, locale);
     }
 
     return {};
 }
 
 std::vector<Tag>::const_iterator OSM::Element::tagsBegin() const
 {
     switch (type()) {
         case Type::Null:
             Q_UNREACHABLE();
         case Type::Node:
             return node()->tags.begin();
         case Type::Way:
             return way()->tags.begin();
         case Type::Relation:
             return relation()->tags.begin();
     }
     Q_UNREACHABLE();
 }
 
 std::vector<Tag>::const_iterator OSM::Element::tagsEnd() const
 {
     switch (type()) {
         case Type::Null:
             Q_UNREACHABLE();
         case Type::Node:
             return node()->tags.end();
         case Type::Way:
             return way()->tags.end();
         case Type::Relation:
             return relation()->tags.end();
     }
     Q_UNREACHABLE();
 }
 
 QString Element::url() const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return node()->url();
         case Type::Way:
             return way()->url();
         case Type::Relation:
             return relation()->url();
     }
 
     return {};
 }
 
 std::vector<const Node*> Element::outerPath(const DataSet &dataSet) const
 {
     switch (type()) {
         case Type::Null:
             return {};
         case Type::Node:
             return {node()};
         case Type::Way:
         {
             std::vector<const Node*> nodes;
             appendNodesFromWay(dataSet, nodes, way()->nodes.begin(), way()->nodes.end());
             return nodes;
         }
         case Type::Relation:
         {
             if (tagValue("type") != "multipolygon") {
                 return {};
             }
 
             // collect the relevant ways
             std::vector<const Way*> ways;
             for (const auto &member : relation()->members) {
                 if (std::strcmp(member.role().name(), "outer") != 0) {
                     continue;
                 }
                 if (auto way = dataSet.way(member.id)) {
                     ways.push_back(way);
                 }
             }
 
             // stitch them together (there is no well-defined order)
             std::vector<const Node*> nodes;
             assemblePath(dataSet, std::move(ways), nodes);
             return nodes;
         }
     }
 
     return {};
 }
 
 void Element::recomputeBoundingBox(const DataSet &dataSet)
 {
     switch (type()) {
         case Type::Null:
         case Type::Node:
             break;
         case Type::Way:
             way()->bbox = std::accumulate(way()->nodes.begin(), way()->nodes.end(), OSM::BoundingBox(), [&dataSet](auto bbox, auto nodeId) {
                 if (auto node = dataSet.node(nodeId)) {
                     return OSM::unite(bbox, {node->coordinate, node->coordinate});
                 }
                 return bbox;
             });
             break;
         case Type::Relation:
             relation()->bbox = {};
             for_each_member(dataSet, *relation(), [this, &dataSet](auto mem) {
                 mem.recomputeBoundingBox(dataSet);
                 relation()->bbox = OSM::unite(relation()->bbox, mem.boundingBox());
             });
             break;
     }
 }
 
 
 UniqueElement::~UniqueElement()
 {
     switch (m_element.type()) {
         case OSM::Type::Null:
             break;
         case OSM::Type::Node:
             delete m_element.node();
             break;
         case OSM::Type::Way:
             delete m_element.way();
             break;
         case OSM::Type::Relation:
             delete m_element.relation();
             break;
     }
 }
 
 void UniqueElement::setTagValue(TagKey key, const QByteArray &value)
 {
     switch (m_element.type()) {
         case OSM::Type::Null:
             return;
         case OSM::Type::Node:
             OSM::setTagValue(*const_cast<Node*>(m_element.node()), key, value);
             break;
         case OSM::Type::Way:
             OSM::setTagValue(*const_cast<Way*>(m_element.way()), key, value);
             break;
         case OSM::Type::Relation:
             OSM::setTagValue(*const_cast<Relation*>(m_element.relation()), key, value);
             break;
     }
 }