Foundation.h

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//-*****************************************************************************
//
// Copyright (c) 2009-2012,
//  Sony Pictures Imageworks, Inc. and
//  Industrial Light & Magic, a division of Lucasfilm Entertainment Company Ltd.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// *       Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// *       Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// *       Neither the name of Sony Pictures Imageworks, nor
// Industrial Light & Magic nor the names of their contributors may be used
// to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//-*****************************************************************************
 
#ifndef Alembic_AbcGeom_Foundation_h
#define Alembic_AbcGeom_Foundation_h
 
#include <Alembic/Abc/All.h>
 
#include <ImathMatrixAlgo.h>
#include <ImathEuler.h>
 
 
namespace Alembic {
namespace AbcGeom {
namespace ALEMBIC_VERSION_NS {
 
namespace Abc = ::Alembic::Abc::ALEMBIC_VERSION_NS;
using namespace Abc;
 
//-*****************************************************************************
enum MeshTopologyVariance
{
    kConstantTopology = 0,
    kHomogenousTopology = 1,
    kHomogeneousTopology = 1,
    kHeterogenousTopology = 2,
    kHeterogeneousTopology = 2
};
 
//-*****************************************************************************
enum XformOperationType
{
    kScaleOperation = 0,
    kTranslateOperation = 1,
    kRotateOperation = 2,
    kMatrixOperation = 3,
    kRotateXOperation = 4,
    kRotateYOperation = 5,
    kRotateZOperation = 6
};
 
//-*****************************************************************************
enum FilmBackXformOperationType
{
    kScaleFilmBackOperation = 0,
    kTranslateFilmBackOperation = 1,
    kMatrixFilmBackOperation = 2
};
 
//-*****************************************************************************
template <class PROP, class SAMP>
inline void SetPropUsePrevIfNull( PROP iProp, SAMP iSamp )
{
    if ( iProp )
    {
        // really only valid with array properties
        assert( iProp.isArray() );
 
        if ( iSamp ) { iProp.set( iSamp ); }
        else { iProp.setFromPrevious(); }
    }
}
 
template <>
inline void SetPropUsePrevIfNull<Abc::OStringProperty, std::string>(
    Abc::OStringProperty iProp, std::string iSamp )
{
    if ( ! iProp ) { return; }
    if ( iSamp != "" ) { iProp.set( iSamp ); }
    else { iProp.setFromPrevious(); }
}
 
template <>
inline void SetPropUsePrevIfNull<Abc::OWstringProperty, Alembic::Util::wstring>(
    Abc::OWstringProperty iProp, Alembic::Util::wstring iSamp )
{
    if ( ! iProp ) { return; }
    if ( iSamp != L"" ) { iProp.set( iSamp ); }
    else { iProp.setFromPrevious(); }
}
 
template <>
inline void SetPropUsePrevIfNull<Abc::OBox3dProperty, Abc::Box3d>(
    Abc::OBox3dProperty iProp, Abc::Box3d iSamp )
{
    if ( ! iProp ) { return; }
    if ( iSamp.hasVolume() ) { iProp.set( iSamp ); }
    else { iProp.setFromPrevious(); }
}
 
//-*****************************************************************************
template <class ARRAYSAMP>
static Abc::Box3d ComputeBoundsFromPositions( const ARRAYSAMP &iSamp )
{
    Abc::Box3d ret;
    size_t size = iSamp.size();
    for ( size_t i = 0 ; i < size ; ++i )
    {
        ret.extendBy( iSamp[i] );
    }
 
    return ret;
}
 
//-*****************************************************************************
inline double DegreesToRadians( double iDegrees )
{
    return ( iDegrees * M_PI ) / 180.0;
}
 
inline double RadiansToDegrees( double iRadians )
{
    return iRadians * ( 180.0 / M_PI );
}
 
//-*****************************************************************************
 
inline bool IsGeomParam( const AbcA::PropertyHeader &iHeader )
{
    return iHeader.isArray() || ( iHeader.isCompound() &&
        iHeader.getMetaData().get( "podName" ) != "" &&
        iHeader.getMetaData().get( "podExtent" ) != "" );
}
 
} // End namespace ALEMBIC_VERSION_NS
 
using namespace ALEMBIC_VERSION_NS;
 
} // End namespace AbcGeom
} // End namespace Alembic
 
#endif