/usr/include/osgEarth/FadeEffect is in libosgearth-dev 2.5.0+dfsg-8build1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | /* -*-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 OSGEARTH_FADE_EFFECT_H
#define OSGEARTH_FADE_EFFECT_H 1
#include <osgEarth/Common>
#include <osgEarth/Config>
#include <osgEarth/ThreadingUtils>
#include <osg/Group>
#include <osg/Uniform>
namespace osgEarth
{
/**
* Options for geometry fading properties.
*/
class OSGEARTH_EXPORT FadeOptions
{
public:
/** Construct new default fade options */
FadeOptions(const Config& conf =Config());
/** Time to fade in a new graph (seconds) */
optional<float>& duration() { return _duration; }
const optional<float>& duration() const { return _duration; }
/** Range at which geometry becomes invisible (m) */
optional<float>& maxRange() { return _maxRange; }
const optional<float>& maxRange() const { return _maxRange; }
/** Distance over which to fade out geometry (from max range) */
optional<float>& attentuationDistance() { return _attenDist; }
const optional<float>& attenuationDistance() const { return _attenDist; }
public:
virtual ~FadeOptions() { }
Config getConfig() const;
private:
optional<float> _duration;
optional<float> _maxRange;
optional<float> _attenDist;
};
/**
* Decorator node that will only display it's children when the camera is within a given elevation range
*/
class OSGEARTH_EXPORT FadeEffect : public osg::Group
{
public:
/**
* Creates a uniform that set the start time for a timed fade. Typically you
* will set this right after adding the node to the scene graph. The value
* is a FLOAT in seconds. You can apply this uniform to the FadeEffect node
* or elsewhere in the scene graph.
*/
static osg::Uniform* createStartTimeUniform();
public:
FadeEffect();
virtual ~FadeEffect() { }
/** Time over which to fade in the subgraph */
void setFadeDuration( float seconds );
float getFadeDuration() const;
/** Camera range at which subgraph is completely faded out */
void setMaxRange( float range );
float getMaxRange() const;
/** Distance over which to fade out the subgraph */
void setAttenuationDistance( float dist );
float getAttenuationDistance() const;
private:
osg::ref_ptr<osg::Uniform> _fadeDuration;
osg::ref_ptr<osg::Uniform> _maxRange;
osg::ref_ptr<osg::Uniform> _attenDist;
};
class OSGEARTH_EXPORT FadeLOD : public osg::Group
{
public:
FadeLOD();
virtual ~FadeLOD() { }
void setMinPixelExtent( float value ) { _minPixelExtent = value; }
float getMinPixelExtent() const { return _minPixelExtent; }
void setMaxPixelExtent( float value ) { _maxPixelExtent = value; }
float getMaxPixelExtent() const { return _maxPixelExtent; }
void setMinFadeExtent( float value ) { _minFadeExtent = value; }
float getMinFadeExtent() const { return _minFadeExtent; }
void setMaxFadeExtent( float value ) { _maxFadeExtent = value; }
float getMaxFadeExtent() const { return _maxFadeExtent; }
public: // osg::Node
virtual void traverse(osg::NodeVisitor& nv );
protected:
struct PerViewData
{
osg::ref_ptr<osg::StateSet> _stateSet;
osg::ref_ptr<osg::Uniform> _opacity;
};
Threading::PerObjectMap<osg::NodeVisitor*, PerViewData> _perViewData;
float _minPixelExtent;
float _maxPixelExtent;
float _minFadeExtent;
float _maxFadeExtent;
};
} // namespace osgEarth
#endif // OSGEARTH_FADE_EFFECT_H
|