apiMeshShape/apiMeshData.h

//-
// ==========================================================================
// Copyright 2015 Autodesk, Inc.  All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.
// ==========================================================================
//+

//
// Provides a data type for some arbitrary user geometry.
// 
// A users geometry class can exist in the DAG by creating an
// MPxSurfaceShape (and UI) class for it and can also be passed through
// DG connections by creating an MPxGeometryData class for it.
// 
// MPxGeometryData is the same as MPxData except it provides 
// additional methods to modify the geometry data via an iterator.
//

#ifndef _apiMeshData
#define _apiMeshData

#include <maya/MPxGeometryData.h>
#include <maya/MTypeId.h>
#include <maya/MString.h>
#include "apiMeshGeom.h"

#include <iosfwd>

class apiMeshData : public MPxGeometryData
{
public:
    //
    // Overrides from MPxData
    //

    apiMeshData();
    ~apiMeshData() override;

    MStatus         readASCII( const MArgList& argList, unsigned& idx ) override;
    MStatus         readBinary( std::istream& in, unsigned length ) override;
    MStatus         writeASCII( std::ostream& out ) override;
    MStatus         writeBinary( std::ostream& out ) override;

        void            copy ( const MPxData& ) override;

    MTypeId         typeId() const override;
    MString         name() const override;

    //
    // Overrides from MPxGeometryData
    //

    MPxGeometryIterator* iterator( MObjectArray & componentList,
                                            MObject & component,
                                            bool useComponents) override;
    MPxGeometryIterator* iterator( MObjectArray & componentList,
                                            MObject & component,
                                            bool useComponents,
                                            bool world) const override;

    bool    updateCompleteVertexGroup( MObject & component ) const override;

    //
    // Helper methods
    //

    MStatus                 readVerticesASCII( const MArgList&, unsigned& );
    MStatus                 readNormalsASCII( const MArgList&, unsigned& );
    MStatus                 readFacesASCII( const MArgList&, unsigned& );
    MStatus                 readUVASCII( const MArgList&, unsigned& ); 

    MStatus                 writeVerticesASCII( std::ostream& out );
    MStatus                 writeNormalsASCII( std::ostream& out );
    MStatus                 writeFacesASCII( std::ostream& out );
    MStatus                 writeUVASCII( std::ostream& out );

    static void * creator();

public:
    static const MString typeName;
    static const MTypeId id;

    // This is the geometry our data will pass though the DG
    //
    apiMeshGeom* fGeometry;
};

#endif /* apimeshData */