DYT/Tool/OpenSceneGraph-3.6.5/include/osgEarth/ElevationLOD

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2024-12-24 23:49:36 +00:00
/* -*-c++-*- */
/* osgEarth - Geospatial SDK for OpenSceneGraph
* Copyright 2020 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 OSGEARTH_ELEVATIONLOD_H
#define OSGEARTH_ELEVATIONLOD_H 1
#include <osgEarth/Common>
#include <osgEarth/SpatialReference>
#include <osg/Group>
namespace osgEarth
{
/**
* Decorator node that will only display it's children when the
* camera is within a given elevation range and/or within a
* given camera range.
*/
class OSGEARTH_EXPORT ElevationLOD : public osg::Group
{
public:
META_Node(osgEarth, ElevationLOD);
ElevationLOD();
ElevationLOD(const ElevationLOD& rhs, const osg::CopyOp& op);
ElevationLOD(const SpatialReference* srs);
ElevationLOD(const SpatialReference* srs, double minElevation, double maxElevation);
double getMinElevation() const;
void setMinElevation( double minElevation );
double getMaxElevation() const;
void setMaxElevation(double maxElevation );
void setElevations( double minElevation, double maxElevation );
float getMinRange() const;
void setMinRange(float minRange);
float getMaxRange() const;
void setMaxRange(float maxRange);
void setRanges( float minRange, float maxRange );
public: // osg::Node
virtual void traverse( osg::NodeVisitor& nv);
protected:
virtual ~ElevationLOD();
private:
osg::ref_ptr< const SpatialReference > _srs;
optional<double> _minElevation;
optional<double> _maxElevation;
optional<float> _minRange;
optional<float> _maxRange;
};
// AltitudeLOD is a better name.
typedef ElevationLOD AltitudeLOD;
} // namespace osgEarth
#endif // OSGEARTH_ELEVATIONLOD_H