OSGTransformChunk.cpp

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/*---------------------------------------------------------------------------*\
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 * This library is free software; you can redistribute it and/or modify it   *
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\*---------------------------------------------------------------------------*/

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

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

#include "OSGConfig.h"

#include <OSGGL.h>

#include "OSGTransformChunk.h"

OSG_USING_NAMESPACE


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

/***************************************************************************\
 *                           Class variables                               *
\***************************************************************************/

StateChunkClass TransformChunk::_class("Transform");

/***************************************************************************\
 *                           Class methods                                 *
\***************************************************************************/

void TransformChunk::initMethod (void)
{

}

/***************************************************************************\
 *                           Instance methods                              *
\***************************************************************************/

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

TransformChunk::TransformChunk(void) :
    Inherited()
{
}

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

TransformChunk::~TransformChunk(void)
{
}

/*------------------------- Chunk Class Access ---------------------------*/

const StateChunkClass *TransformChunk::getClass(void) const
{
    return &_class;
}

/*------------------------------- Sync -----------------------------------*/

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

/*------------------------------ Output ----------------------------------*/

void TransformChunk::dump(      UInt32    OSG_CHECK_ARG(uiIndent),
                          const BitVector OSG_CHECK_ARG(bvFlags )) const
{
    SLOG << "Dump TransformChunk NI" << std::endl;
}


/*------------------------------ State ------------------------------------*/

void TransformChunk::activate ( DrawActionBase *,  UInt32 )
{
    glPushMatrix();
    glMultMatrixf( getMatrix().getValues() );
}

void TransformChunk::changeFrom( DrawActionBase *,  StateChunk * old, UInt32 )
{
    // change from me to me?
    // this assumes I haven't changed in the meantime. is that a valid assumption?
    if ( old == this )
        return;

    glPopMatrix();
    glPushMatrix();
    glMultMatrixf( getMatrix().getValues() );
}

void TransformChunk::deactivate ( DrawActionBase *,  UInt32 )
{
    glPopMatrix();
}

/*-------------------------- Comparison -----------------------------------*/

Real32 TransformChunk::switchCost(StateChunk *OSG_CHECK_ARG(chunk))
{
    return 0;
}

bool TransformChunk::operator < (const StateChunk &other) const
{
    return this < &other;
}

bool TransformChunk::operator == (const StateChunk &other) const
{
    TransformChunk const *tother = dynamic_cast<TransformChunk const*>(&other);

    if ( !tother )
        return false;

    if(tother == this)
        return true;

    return getMatrix().equals( tother->getMatrix(), Eps );
}

bool TransformChunk::operator != (const StateChunk &other) const
{
    return ! (*this == other);
}

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

#ifdef OSG_SGI_CC
#pragma set woff 1174
#endif

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

namespace
{
    static Char8 cvsid_cpp       [] = "@(#)$Id: FCTemplate_cpp.h,v 1.13 2002/06/01 10:37:25 vossg Exp $";
    static Char8 cvsid_hpp       [] = OSGTRANSFORMCHUNK_HEADER_CVSID;
    static Char8 cvsid_inl       [] = OSGTRANSFORMCHUNK_INLINE_CVSID;

    static Char8 cvsid_fields_hpp[] = OSGTRANSFORMCHUNKFIELDS_HEADER_CVSID;
}

#ifdef __sgi
#pragma reset woff 1174
#endif

---