//-*****************************************************************************

//

// 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_IPolyMesh_h

#define Alembic_AbcGeom_IPolyMesh_h

#include <Alembic/Util/Export.h>

#include <Alembic/AbcGeom/Foundation.h>

#include <Alembic/AbcGeom/SchemaInfoDeclarations.h>

#include <Alembic/AbcGeom/IFaceSet.h>

#include <Alembic/AbcGeom/IGeomParam.h>

#include <Alembic/AbcGeom/IGeomBase.h>

namespace Alembic {

namespace AbcGeom {

namespace ALEMBIC_VERSION_NS {

//-*****************************************************************************

class ALEMBIC_EXPORT IPolyMeshSchema

    : public IGeomBaseSchema<PolyMeshSchemaInfo>

{

public:

    class Sample

    {

    public:

        typedef Sample this_type;

        // Users don't ever create this data directly.

        Sample() { reset(); }

        Abc::P3fArraySamplePtr getPositions() const { return m_positions; }

        Abc::V3fArraySamplePtr getVelocities() const { return m_velocities; }

        Abc::Int32ArraySamplePtr getFaceIndices() const { return m_indices; }

        Abc::Int32ArraySamplePtr getFaceCounts() const { return m_counts; }

        Abc::Box3d getSelfBounds() const { return m_selfBounds; }

        bool valid() const

        {

            return m_positions && m_indices && m_counts;

        }

        void reset()

        {

            m_positions.reset();

            m_velocities.reset();

            m_indices.reset();

            m_counts.reset();

            m_selfBounds.makeEmpty();

        }

        ALEMBIC_OPERATOR_BOOL( valid() );

    protected:

        friend class IPolyMeshSchema;

        Abc::P3fArraySamplePtr m_positions;

        Abc::V3fArraySamplePtr m_velocities;

        Abc::Int32ArraySamplePtr m_indices;

        Abc::Int32ArraySamplePtr m_counts;

        Abc::Box3d m_selfBounds;

    };

    //-*************************************************************************

    // POLY MESH SCHEMA

    //-*************************************************************************

public:

    //! By convention we always define this_type in AbcGeom classes.

    //! Used by unspecified-bool-type conversion below

    typedef IPolyMeshSchema this_type;

    //-*************************************************************************

    // CONSTRUCTION, DESTRUCTION, ASSIGNMENT

    //-*************************************************************************

    //! The default constructor creates an empty OPolyMeshSchema

    //! ...

    IPolyMeshSchema() {}

    //! This constructor creates a new mesh reader.

    //! The first argument is the parent ICompoundProperty, from which the

    //! error handler policy for is derived.  The second argument is the name

    //! of the ICompoundProperty that contains this schemas properties.  The

    //! remaining optional arguments can be used to override the

    //! ErrorHandlerPolicy and to specify schema interpretation matching.

    IPolyMeshSchema( const ICompoundProperty &iParent,

                     const std::string &iName,

                     const Abc::Argument &iArg0 = Abc::Argument(),

                     const Abc::Argument &iArg1 = Abc::Argument() )

      : IGeomBaseSchema<PolyMeshSchemaInfo>( iParent, iName, iArg0, iArg1 )

    {

        init( iArg0, iArg1 );

    }

    //! This constructor wraps an existing ICompoundProperty as the mesh

    //! reader, and the error handler policy is derived from it.

    //! The  remaining optional arguments can be used to override the

    //! ErrorHandlerPolicy and to specify schema interpretation matching.

    IPolyMeshSchema( const ICompoundProperty &iProp,

                     const Abc::Argument &iArg0 = Abc::Argument(),

                     const Abc::Argument &iArg1 = Abc::Argument() )

      : IGeomBaseSchema<PolyMeshSchemaInfo>( iProp, iArg0, iArg1 )

    {

        init( iArg0, iArg1 );

    }

    //! Copy constructor.

    IPolyMeshSchema(const IPolyMeshSchema& iCopy)

        : IGeomBaseSchema<PolyMeshSchemaInfo>()

    {

        *this = iCopy;

    }

    const IPolyMeshSchema & operator=(const IPolyMeshSchema & rhs);

    //! Return the number of samples contained in the property.

    //! This can be any number, including zero.

    //! This returns the number of samples that were written, independently

    //! of whether or not they were constant.

    size_t getNumSamples() const

    { return  m_positionsProperty.getNumSamples(); }

    //! Return the topological variance.

    //! This indicates how the mesh may change.

    MeshTopologyVariance getTopologyVariance() const;

    //! Ask if we're constant - no change in value amongst samples,

    //! regardless of the time sampling.

    bool isConstant() const { return getTopologyVariance() == kConstantTopology; }

    //! Time information.

    //! Any of the properties could be the bearer of the time

    //! sampling information, which otherwise defaults to Identity.

    AbcA::TimeSamplingPtr getTimeSampling() const

    {

        if ( m_positionsProperty.valid() )

        {

            return m_positionsProperty.getTimeSampling();

        }

        else

        {

            return getObject().getArchive().getTimeSampling( 0 );

        }

    }

    //-*************************************************************************

    void get( Sample &oSample,

              const Abc::ISampleSelector &iSS = Abc::ISampleSelector() ) const

    {

        ALEMBIC_ABC_SAFE_CALL_BEGIN( "IPolyMeshSchema::get()" );

        m_positionsProperty.get( oSample.m_positions, iSS );

        m_indicesProperty.get( oSample.m_indices, iSS );

        m_countsProperty.get( oSample.m_counts, iSS );

        m_selfBoundsProperty.get( oSample.m_selfBounds, iSS );

        if ( m_velocitiesProperty && m_velocitiesProperty.getNumSamples() > 0 )

        {

            m_velocitiesProperty.get( oSample.m_velocities, iSS );

        }

        // Could error check here.

        ALEMBIC_ABC_SAFE_CALL_END();

    }

    Sample getValue( const Abc::ISampleSelector &iSS = Abc::ISampleSelector() ) const

    {

        Sample smp;

        get( smp, iSS );

        return smp;

    }

    IV2fGeomParam getUVsParam() const

    {

        return m_uvsParam;

    }

    IN3fGeomParam getNormalsParam() const

    {

        return m_normalsParam;

    }

    Abc::IInt32ArrayProperty getFaceCountsProperty() const

    {

        return m_countsProperty;

    }

    Abc::IInt32ArrayProperty getFaceIndicesProperty() const

    {

        return m_indicesProperty;

    }

    Abc::IP3fArrayProperty getPositionsProperty() const

    {

        return m_positionsProperty;

    }

    Abc::IV3fArrayProperty getVelocitiesProperty() const

    {

        return m_velocitiesProperty;

    }

    //-*************************************************************************

    // ABC BASE MECHANISMS

    // These functions are used by Abc to deal with errors, rewrapping,

    // and so on.

    //-*************************************************************************

    //! Reset returns this function set to an empty, default

    //! state.

    void reset()

    {

        m_positionsProperty.reset();

        m_velocitiesProperty.reset();

        m_indicesProperty.reset();

        m_countsProperty.reset();

        m_uvsParam.reset();

        m_normalsParam.reset();

        IGeomBaseSchema<PolyMeshSchemaInfo>::reset();

    }

    //! Valid returns whether this function set is

    //! valid.

    bool valid() const

    {

        return ( IGeomBaseSchema<PolyMeshSchemaInfo>::valid() &&

                 m_positionsProperty.valid() &&

                 m_indicesProperty.valid() &&

                 m_countsProperty.valid() );

    }

    // FaceSet related

    //! Appends the names of any FaceSets for this PolyMesh.

    void getFaceSetNames (std::vector <std::string> & oFaceSetNames);

    IFaceSet getFaceSet( const std::string &iFaceSetName );

    bool hasFaceSet( const std::string &iFaceSetName );

    //! unspecified-bool-type operator overload.

    //! ...

    ALEMBIC_OVERRIDE_OPERATOR_BOOL( IPolyMeshSchema::valid() );

protected:

    void init( const Abc::Argument &iArg0,

               const Abc::Argument &iArg1 );

    Abc::IP3fArrayProperty m_positionsProperty;

    Abc::IV3fArrayProperty m_velocitiesProperty;

    Abc::IInt32ArrayProperty m_indicesProperty;

    Abc::IInt32ArrayProperty m_countsProperty;

    IV2fGeomParam m_uvsParam;

    IN3fGeomParam m_normalsParam;

    // FaceSets, this starts as empty until client

    // code attempts to access facesets.

    bool                              m_faceSetsLoaded;

    std::map <std::string, IFaceSet>  m_faceSets;

    Alembic::Util::mutex                      m_faceSetsMutex;

    void loadFaceSetNames();

};

//-*****************************************************************************

typedef Abc::ISchemaObject<IPolyMeshSchema> IPolyMesh;

typedef Util::shared_ptr< IPolyMesh > IPolyMeshPtr;

} // End namespace ALEMBIC_VERSION_NS

using namespace ALEMBIC_VERSION_NS;

} // End namespace AbcGeom

} // End namespace Alembic

#endif