/usr/include/osgEarthUtil/PolyhedralLineOfSight is in libosgearth-dev 2.4.0+dfsg-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | /* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTHUTIL_VOLUME_LINEOFSIGHT
#define OSGEARTHUTIL_VOLUME_LINEOFSIGHT 1
#include <osgEarthUtil/LineOfSight>
#include <osgEarth/MapNode>
#include <osgEarth/GeoData>
#include <osgEarth/Units>
#include <osgEarthAnnotation/LocalizedNode>
#include <osgEarth/Terrain>
#include <osg/Geode>
namespace osgEarth { namespace Util
{
    using namespace osgEarth;
    using namespace osgEarth::Annotation;
    /**
     * A Node that display a line of sight polytope.
     */
    class OSGEARTHUTIL_EXPORT PolyhedralLineOfSightNode : public LocalizedNode
    {
    public:
        /**
         * Constructs a new PolyhedralLineOfSightNode.
         * @param mapNode MapNode this LOS is operating under.
         */
        PolyhedralLineOfSightNode( MapNode* mapNode );
        virtual ~PolyhedralLineOfSightNode();
        /**
         * The maximum sampling range from the center point
         */
        void setDistance( const Distance& value );
        const Distance& getDistance() const { return _distance; }
        /** 
         * The azimuthal range for the LOS sampling
         */
        void setAzimuthalRange( const Angle& start, const Angle& end );
        void getAximuthalRange( Angle& out_start, Angle& out_end );
        /**
         * The elevation (pitch) range for the LOS sampling
         */
        void setElevationRange( const Angle& start, const Angle& end );
        void getElevationRange( Angle& out_start, Angle& out_end );
        /**
         * The sample spacing (in both azimuth and elevation)
         */
        void setSampleSpacing( const Angle& spacing );
        const Angle& getSampleSpacing() const { return _spacing; }
        /**
         * Manage callbacks that report whether the LOS has changed
         */
        void addChangedCallback( LOSChangedCallback* callback );
        void removeChangedCallback( LOSChangedCallback* callback );
    public: // LocalizedNode
        
        virtual bool setPosition( const GeoPoint& pos );
        virtual osg::MatrixTransform* getTransform() { return _xform.get(); }
    public: // MapNodeObserver
        virtual void setMapNode( MapNode* mapNode );
    public:
        // internal: called when the underlying terrain changes and resampling
        // is required
        void terrainChanged( const osgEarth::TileKey& tileKey, osg::Node* terrain );
        virtual void traverse(osg::NodeVisitor& nv);
    protected:
        Angle                  _startAzim, _endAzim;
        Angle                  _startElev, _endElev;
        Angle                  _spacing;
        Distance               _distance;
        LOSChangedCallbackList _changedCallbacks;
        unsigned               _numRows;
        unsigned               _numCols;
        osg::Geode*            _geode;
        GeoExtent              _extent;
        osg::ref_ptr<osg::MatrixTransform> _xform;
        osg::ref_ptr< TerrainCallback > _terrainCallback;
        void dirty();
        void rebuildGeometry();
        void updateSamples();
        void recalculateExtent();
    };
} } // namespace osgEarth::Util
#endif // OSGEARTHUTIL_VOLUME_LINEOFSIGHT
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