IXform.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
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//-*****************************************************************************
 
#ifndef Alembic_AbcGeom_IXform_h
#define Alembic_AbcGeom_IXform_h
 
#include <Alembic/Util/Export.h>
#include <Alembic/AbcGeom/Foundation.h>
#include <Alembic/AbcGeom/SchemaInfoDeclarations.h>
 
#include <Alembic/AbcGeom/XformSample.h>
 
namespace Alembic {
namespace AbcGeom {
namespace ALEMBIC_VERSION_NS {
 
//-*****************************************************************************
class ALEMBIC_EXPORT IXformSchema : public Abc::ISchema<XformSchemaInfo>
{
    //-*************************************************************************
    // XFORM SCHEMA
    //-*************************************************************************
public:

    typedef Abc::ISchema<XformSchemaInfo> super_type;
    typedef IXformSchema this_type;
    typedef XformSample sample_type;
 
    //-*************************************************************************
    // CONSTRUCTION, DESTRUCTION, ASSIGNMENT
    //-*************************************************************************

    IXformSchema()
    {
        m_useArrayProp = false;
        m_isConstant = true;
        m_isConstantIdentity = true;
    }

    IXformSchema( const ICompoundProperty &iParent,
                  const std::string &iName,
                  const Abc::Argument &iArg0 = Abc::Argument(),
                  const Abc::Argument &iArg1 = Abc::Argument() )
      : Abc::ISchema<XformSchemaInfo>( iParent, iName, iArg0, iArg1 )
    {
        // Meta data and error handling are eaten up by
        // the super type, so all that's left is SchemaInterpMatching.
        init( iArg0, iArg1 );
    }

    IXformSchema( const ICompoundProperty &iProp,
                  const Abc::Argument &iArg0 = Abc::Argument(),
                  const Abc::Argument &iArg1 = Abc::Argument() )
      : Abc::ISchema<XformSchemaInfo>( iProp, iArg0, iArg1 )
    {
        init( iArg0, iArg1 );
    }

    IXformSchema( const IXformSchema &iCopy )
        : Abc::ISchema<XformSchemaInfo>()
    {
        *this = iCopy;
    }
 
    AbcA::TimeSamplingPtr getTimeSampling() const;
 
    bool isConstant() const { return m_isConstant; }

    bool isConstantIdentity() const { return m_isConstantIdentity; }
 
    size_t getNumSamples() const;

    void get( XformSample &oSamp,
              const Abc::ISampleSelector &iSS = Abc::ISampleSelector() ) const;
 
    XformSample getValue( const Abc::ISampleSelector &iSS =
                          Abc::ISampleSelector() ) const;
 
    Abc::IBox3dProperty getChildBoundsProperty() const
    {
        return m_childBoundsProperty;
    }
 
    // lightweight get to avoid constructing a sample
    // see XformSample.h for explanation of this property
    bool getInheritsXforms( const Abc::ISampleSelector &iSS =
                            Abc::ISampleSelector() ) const;
 
    size_t getNumOps() const { return m_sample.getNumOps(); }

    void reset()
    {
        m_childBoundsProperty.reset();
        m_sample = XformSample();
        m_inheritsProperty.reset();
        m_isConstant = true;
        m_isConstantIdentity = true;
 
        m_arbGeomParams.reset();
        m_userProperties.reset();
 
        super_type::reset();
    }

    bool valid() const
    {
        return ( super_type::valid() );
    }
 
    ICompoundProperty getArbGeomParams() const { return m_arbGeomParams; }
 
    ICompoundProperty getUserProperties() const { return m_userProperties; }

    ALEMBIC_OVERRIDE_OPERATOR_BOOL( this_type::valid() );
 
 
protected:
    Abc::IBox3dProperty m_childBoundsProperty;
 
    AbcA::BasePropertyReaderPtr m_valsProperty;
 
    Abc::IBoolProperty m_inheritsProperty;
 
    Abc::ICompoundProperty m_arbGeomParams;
    Abc::ICompoundProperty m_userProperties;
 
    bool m_isConstant;
 
    bool m_isConstantIdentity;
 
    XformSample m_sample;
 
private:
    void init( const Abc::Argument &iArg0, const Abc::Argument &iArg1 );
 
    // is m_vals an ArrayProperty, or a ScalarProperty?
    bool m_useArrayProp;
 
    // fills m_valVec with data
    void getChannelValues( const AbcA::index_t iSampleIndex,
                           XformSample & oSamp ) const;
};
 
//-*****************************************************************************
// SCHEMA OBJECT
//-*****************************************************************************
typedef Abc::ISchemaObject<IXformSchema> IXform;
 
typedef Util::shared_ptr< IXform > IXformPtr;
 
} // End namespace ALEMBIC_VERSION_NS
 
using namespace ALEMBIC_VERSION_NS;
 
} // End namespace AbcGeom
} // End namespace Alembic
 
#endif