root/OpenSceneGraph/trunk/include/osgShadow/ProjectionShadowMap @ 13041

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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version.  The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * OpenSceneGraph Public License for more details.
12 *
13 * ViewDependentShadow codes Copyright (C) 2008 Wojciech Lewandowski
14 * Thanks to to my company http://www.ai.com.pl for allowing me free this work.
15*/
16
17#ifndef OSGSHADOW_PROJECTIONSHADOWMAP
18#define OSGSHADOW_PROJECTIONSHADOWMAP 1
19
20#include <osgShadow/MinimalShadowMap>
21
22namespace osgShadow {
23
24template< typename MinimalBoundsBaseClass, typename ShadowProjectionAlgorithmClass >
25class OSGSHADOW_EXPORT ProjectionShadowMap : public MinimalBoundsBaseClass
26{
27    public :
28        /** Convenient typedef used in definition of ViewData struct and methods */
29        typedef MinimalBoundsBaseClass                                                     BaseClass;
30        /** Convenient typedef used in definition of ViewData struct and methods */
31        typedef ProjectionShadowMap<MinimalBoundsBaseClass,ShadowProjectionAlgorithmClass> ThisClass;
32
33        /** Classic OSG constructor */
34        ProjectionShadowMap() : BaseClass()
35        {
36        }
37
38        /** Classic OSG cloning constructor */
39        ProjectionShadowMap(
40            const ProjectionShadowMap& copy,
41            const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY) : BaseClass(copy,copyop)
42        {
43        }
44
45        /** Declaration of standard OSG object methods */
46        META_Object( osgShadow, ProjectionShadowMap );
47
48    protected:
49
50        /** Classic protected OSG destructor */
51        virtual ~ProjectionShadowMap(void)
52        {
53        }
54
55        struct OSGSHADOW_EXPORT ViewData: public BaseClass::ViewData,
56                         public ShadowProjectionAlgorithmClass
57        {
58    #if 0
59            virtual void init( ThisClass * st, osgUtil::CullVisitor * cv );
60            {
61                BaseClass::ViewData::init( st, cv );
62            }
63    #endif
64
65            virtual void frameShadowCastingCamera
66                ( const osg::Camera* cameraMain, osg::Camera* cameraShadow, int pass = 1 )
67            {
68                if( pass == BaseClass::ViewData::_frameShadowCastingCameraPasses - 1 )
69                {
70                    // Force dependent name lookup
71                    ShadowProjectionAlgorithmClass::operator()
72                        ( &this->_sceneReceivingShadowPolytope, cameraMain, cameraShadow );
73                }
74
75                // DebugBoundingBox( computeScenePolytopeBounds(), "ProjectionShadowMap" );
76                BaseClass::ViewData::frameShadowCastingCamera( cameraMain, cameraShadow, pass );
77            }
78        };
79
80        META_ViewDependentShadowTechniqueData( ThisClass, typename ThisClass::ViewData )
81};
82
83} // namespace osgShadow
84
85#endif
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