libosgearth-dev 2.4.0+dfsg-6 / usr / include / osgEarth / DrapingTechnique

This file is indexed.

/usr/include/osgEarth/DrapingTechnique 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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/* -*-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_OVERLAY_DRAPING_TECHNIQUE
#define OSGEARTH_OVERLAY_DRAPING_TECHNIQUE

#include <osgEarth/Common>
#include <osgEarth/OverlayDecorator>
#include <osg/TexGenNode>
#include <osg/Uniform>

namespace osgEarth
{
    class TerrainEngineNode;

    /**
     * Projects an overlay scene graph onto the main model.
     *
     * The OverlayDecorator is automatically installed in the MapNode and is used
     * to display ModelLayer's whose "overlay" property is set to true.
     *
     * This class is similar in scope to osgSim::OverlayNode, but is optimized
     * for use with osgEarth and geocentric terrains.
     */
    class OSGEARTH_EXPORT DrapingTechnique : public OverlayTechnique
    {
    public:
        DrapingTechnique();

        /**
         * Explicity sets the texture unit to use. Note! When you add this class
         * to a MapNode, it will automatically allocate a free texture unit; so you
         * usually do NOT need to call this method.
         */
        void setTextureUnit( int unit );
        int getTextureUnit() const { return *_textureUnit; }

        /**
         * The size (resolution in both directions) of the overlay texture. By
         * default, this defaults to 4096 or your hardware's maximum supported
         * texture size, whichever is less.
         */
        void setTextureSize( int texSize );
        int getTextureSize() const { return *_textureSize; }

        /**
         * Whether mipmapping is enabled on the projected overlay texture. Mapmapping
         * will improve the visual appearance, but will use more memory, and will affect
         * performance for overlays that are dynamic. Mipmapping can slow things down
         * a LOT on some GPUs (e.g. Intel GMA)
         */
        void setMipMapping( bool value );
        bool getMipMapping() const { return _mipmapping; }

        /**
         * Whether to enable blending on the RTT camera graph. Default = true. You might
         * want to disable this is you are draping polygons that cover a very large area
         * and curve around the globe; sometimes they suffer from tessellation artifacts
         * when draped.
         */
        void setOverlayBlending( bool value );
        bool getOverlayBlending() const { return _rttBlending; }

        /**
         * Whether to attach the RTT to camera to the stencil buffer.  Default = true.
         * Some older cards don't have very good support 
         */
        void setAttachStencil( bool value );
        bool getAttachStencil() const;


    public: // OverlayTechnique

        virtual bool hasData(
            OverlayDecorator::TechRTTParams& params) const;

        void reestablish(
            TerrainEngineNode* engine );

        void preCullTerrain(
            OverlayDecorator::TechRTTParams& params,
            osgUtil::CullVisitor*            cv );

        void cullOverlayGroup(
            OverlayDecorator::TechRTTParams& params,
            osgUtil::CullVisitor*            cv );

        void onInstall( TerrainEngineNode* engine );

        void onUninstall( TerrainEngineNode* engine );


    protected:
        virtual ~DrapingTechnique() { }

    private:
        optional<int>                 _explicitTextureUnit;
        optional<int>                 _textureUnit;
        optional<int>                 _textureSize;
        bool                          _useShaders;
        bool                          _mipmapping;
        bool                          _rttBlending;
        bool                          _attachStencil;

        struct TechData : public osg::Referenced
        {
            osg::ref_ptr<osg::Uniform>    _texGenUniform;
            osg::ref_ptr<osg::TexGen>     _texGen;
        };

    private:
        
        void setUpCamera(OverlayDecorator::TechRTTParams& params);
    };

} // namespace osgEarth

#endif //OSGEARTH_OVERLAY_DRAPING_TECHNIQUE

APT Browse - Built by Thomas Orozco.