101 lines
3.0 KiB
Plaintext
101 lines
3.0 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#ifndef OSGEARTHUTIL_SELECT_EXTENT_TOOL_H
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#define OSGEARTHUTIL_SELECT_EXTENT_TOOL_H 1
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#include <osgEarth/Common>
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#include <osgEarth/MapNode>
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#include <osgEarth/FeatureNode>
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#include <osgEarth/Style>
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#include <osg/Group>
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#include <osgGA/GUIEventHandler>
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#include <osgViewer/View>
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namespace osgEarth { namespace Contrib
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{
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using namespace osgEarth;
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/**
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* Tool that lets the user draw a GeoExtent, and fire a callback
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* when it is done.
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*/
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struct OSGEARTH_EXPORT SelectExtentTool : public osgGA::GUIEventHandler
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{
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public:
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typedef std::function<void(const GeoExtent&)> Callback;
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//! Construct a new tool
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SelectExtentTool(MapNode* mapNode);
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//! Whether this tool is enabled (default is true)
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void setEnabled(bool value);
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bool getEnabled() const { return _enabled; }
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//! Clear the visual bounding box
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void clear();
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//! Sets the mouse button that activates the tool
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//! (osgGA::GUIEventAdapter::MouseButtonMask)
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void setMouseButtonMask(int value);
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//! Sets the mod key mask (shift, ctrl, alt) that activates the tool
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//! (osgGA::GUIEventAdapter::ModKeyMask)
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void setModKeyMask(int value);
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//! Access the style to change the appearance of the box
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Style& getStyle();
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//! Function to call when the user finished drawing the extent
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void setCallback(const Callback& callback);
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public: // osgGA::GUIEventHandler
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bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa) override;
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protected:
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bool _enabled;
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bool _mouseDown;
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int _mouseButtonMask;
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int _modKeyMask;
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osg::ref_ptr<osg::Group> _root;
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GeoPoint _mouseDownPoint;
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GeoExtent _extent;
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osg::ref_ptr<osgEarth::FeatureNode> _featureNode;
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osg::ref_ptr<osgEarth::Feature> _feature;
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Callback _callback;
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osg::observer_ptr< MapNode > _mapNode;
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virtual ~SelectExtentTool();
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MapNode* getMapNode() { return _mapNode.get(); }
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void rebuild();
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void updateFeature(const GeoExtent& ex); // const GeoPoint& p1, const GeoPoint& p2);
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};
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} }
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#endif // OSGEARTHUTIL_SELECT_EXTENT_TOOL_H
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