90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
///@file
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/// A group of 2D Canvas elements which get automatically transformed according
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/// to the map parameters.
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//
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// Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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#ifndef CANVAS_MAP_HXX_
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#define CANVAS_MAP_HXX_
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#include "CanvasGroup.hxx"
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#include <memory>
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#include <unordered_map>
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#include <unordered_set>
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namespace simgear
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{
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namespace canvas
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{
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class GeoNodePair;
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class HorizontalProjection;
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class Map:
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public Group
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{
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public:
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static const std::string TYPE_NAME;
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static void staticInit();
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Map( const CanvasWeakPtr& canvas,
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const SGPropertyNode_ptr& node,
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const Style& parent_style,
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ElementWeakPtr parent = 0 );
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virtual ~Map();
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protected:
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void updateImpl(double dt) override;
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void updateProjection(SGPropertyNode* type_node);
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void childAdded(SGPropertyNode* parent, SGPropertyNode* child) override;
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void childRemoved(SGPropertyNode* parent, SGPropertyNode* child) override;
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void valueChanged(SGPropertyNode* child) override;
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void childChanged(SGPropertyNode* child) override;
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using GeoNodes =
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std::unordered_map<SGPropertyNode*, std::shared_ptr<GeoNodePair>>;
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using NodeSet = std::unordered_set<SGPropertyNode*>;
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GeoNodes _geo_nodes;
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NodeSet _hdg_nodes;
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std::shared_ptr<HorizontalProjection> _projection;
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bool _projection_dirty = false;
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struct GeoCoord
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{
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enum
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{
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INVALID,
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LATITUDE,
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LONGITUDE
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} type = INVALID;
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double value = 0;
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};
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void projectionNodeChanged(SGPropertyNode* child);
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void geoNodeChanged(SGPropertyNode* child);
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void hdgNodeChanged(SGPropertyNode* child);
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GeoCoord parseGeoCoord(const std::string& val) const;
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};
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} // namespace canvas
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} // namespace simgear
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#endif /* CANVAS_MAP_HXX_ */
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