OSGShearedStereoCameraDecorator.cpp

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/*---------------------------------------------------------------------------*\
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\*---------------------------------------------------------------------------*/

//---------------------------------------------------------------------------
//  Includes
//---------------------------------------------------------------------------

#include <stdlib.h>
#include <stdio.h>

#include <OSGConfig.h>

#include <OSGMatrixUtility.h>

#include "OSGNodePtr.h"
#include "OSGPerspectiveCamera.h"
#include "OSGShearedStereoCameraDecorator.h"

OSG_USING_NAMESPACE

/***************************************************************************\
 *                            Description                                  *
\***************************************************************************/

/*----------------------- constructors & destructors ----------------------*/

ShearedStereoCameraDecorator::ShearedStereoCameraDecorator(void) :
    Inherited()
{
}

ShearedStereoCameraDecorator::ShearedStereoCameraDecorator(const ShearedStereoCameraDecorator &source) :
    Inherited(source)
{
}

ShearedStereoCameraDecorator::~ShearedStereoCameraDecorator(void)
{
}

/*----------------------------- class specific ----------------------------*/

void ShearedStereoCameraDecorator::initMethod (void)
{
}

void ShearedStereoCameraDecorator::changed(BitVector whichField, UInt32 origin)
{
    Inherited::changed(whichField, origin);
}

void ShearedStereoCameraDecorator::dump(      UInt32    , 
                         const BitVector ) const
{
    SLOG << "Dump ShearedStereoCameraDecorator NI" << std::endl;
}


void ShearedStereoCameraDecorator::getProjection( Matrix &result, 
                                                  UInt32 width, UInt32 height)
{
    if(width == 0 || height == 0)
    {
        result.setIdentity();
        return;
    }
       
    PerspectiveCameraPtr cam = PerspectiveCameraPtr::dcast(getDecoratee());
    
    if(cam == NullFC)
    {
        FFATAL(("ShearedStereoCameraDecorator::getProjection: can only"
                " decorate PerspectiveCameras!\n"));
        result.setIdentity();
        return;
    }
    
    Matrix trans;
    MatrixStereoPerspective(result, trans, cam->getFov(), 
                            width / (Real32) height * cam->getAspect(), 
                            cam->getNear(), cam->getFar(),
                            getZeroParallaxDistance(),
                            getEyeSeparation(),
                            getLeftEye() ? 0.f : 1.f,
                            getOverlap());
    
    result.mult(trans);
}                                       

void ShearedStereoCameraDecorator::getDecoration(Matrix        &result, 
                                                 UInt32 width, UInt32 height)
{
    if(width == 0 || height == 0)
    {
        result.setIdentity();
        return;
    }

    CameraPtr camera = getDecoratee();
    if(camera == NullFC)
    {
        FWARNING(("TileCameraDecorator::getProjection: no decoratee!\n"));
        result.setIdentity();
        return;
    }
    
    camera->getDecoration(result, width, height);
}

/*-------------------------------------------------------------------------*/
/*                              cvs id's                                   */

#ifdef __sgi
#pragma set woff 1174
#endif

#ifdef OSG_LINUX_ICC
#pragma warning( disable : 177 )
#endif

namespace
{
    static char cvsid_cpp[] = "@(#)$Id: $";
    static char cvsid_hpp[] = OSGSHEAREDSTEREOCAMERADECORATOR_HEADER_CVSID;
    static char cvsid_inl[] = OSGSHEAREDSTEREOCAMERADECORATOR_INLINE_CVSID;
}

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