/usr/include/osgEarthUtil/HSLColorFilter is in libosgearth-dev 2.7.0+dfsg-2+b3.
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 2015 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_HSL_COLOR_FILTER
#define OSGEARTHUTIL_HSL_COLOR_FILTER
#include <osgEarthUtil/Common>
#include <osgEarth/ColorFilter>
#include <osg/Uniform>
namespace osgEarth { namespace Util
{
using namespace osgEarth;
/**
* Color filter that adjust the hue/saturation/lightness of a texel.
*/
class OSGEARTHUTIL_EXPORT HSLColorFilter : public ColorFilter
{
public:
HSLColorFilter();
HSLColorFilter(const Config& conf);
virtual ~HSLColorFilter() { }
/**
* The hue/saturation/lightness offset, each component is [0..1]
*/
void setHSLOffset( const osg::Vec3f& hsl );
osg::Vec3f getHSLOffset() const;
public: // ColorFilter
virtual std::string getEntryPointFunctionName() const;
virtual void install( osg::StateSet* stateSet ) const;
virtual Config getConfig() const;
protected:
unsigned _instanceId;
osg::ref_ptr<osg::Uniform> _hsl;
void init();
};
} } // namespace osgEarth::Util
#endif // OSGEARTHUTIL_HSL_COLOR_FILTER
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