/usr/include/osgEarthUtil/Fog is in libosgearth-dev 2.9.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2012 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* 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_FOG_H
#define OSGEARTHUTIL_FOG_H
#include <osgEarthUtil/Common>
#include <osgEarth/TerrainEffect>
#include <osg/Uniform>
#include <osg/Node>
#include <osg/observer_ptr>
namespace osgEarth { namespace Util
{
/**
* Utility callback to add uniforms and track them for shader based osg::Fog.
* You must install this callback as an update callback on any osg::Fog you want to track in your application.
* ex:
* fog->setUpdateCallback(new osgEarth::Util::FogCallback());
*/
class OSGEARTHUTIL_EXPORT FogCallback : public osg::StateAttributeCallback
{
public:
virtual void operator() (osg::StateAttribute* attr, osg::NodeVisitor* nv);
};
/**
* Utility class for injecting fog capabilities into a VirtualProgram
*/
class OSGEARTHUTIL_EXPORT FogEffect : public osg::Referenced
{
public:
/**
* Creates a new FogEffect
*/
FogEffect();
/**
* Creates a new FogEffect and attaches it to the stateset.
*/
FogEffect(osg::StateSet* stateSet );
/**
* Attaches this FogEffect to the given StateSet
*/
void attach(osg::StateSet* stateSet );
/**
* Detatches this FogEffect from the given StateSet
*/
void detach(osg::StateSet* stateSet );
/**
* Detaches this FogEffect from all attached StateSets
*/
void detach();
protected:
~FogEffect();
typedef std::list< osg::observer_ptr<osg::StateSet> > StateSetList;
StateSetList _statesets;
};
} } // namespace osgEarth::Util
#endif // OSGEARTHUTIL_FOG_H
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