GEO_IORibXlate.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        GEO_IORibXlate.h ( GEO Library, C++)
 *
 * COMMENTS:    RIB Attribute translation...
 */

#ifndef __GEO_IORibXlate__
#define __GEO_IORibXlate__

#include "GEO_API.h"
#include <GA/GA_AttributeRef.h>
#include <GA/GA_Types.h>
class GEO_Detail;
class UT_String;

enum GEO_RibAttribute
{
    GEO_RIB_FLOAT,
    GEO_RIB_STRING
};

class GEO_API GEO_IORibXlate
{
public:
     GEO_IORibXlate(const char *map);
    ~GEO_IORibXlate();

    void        lookup(const GEO_Detail *gdp);
    const GA_ROAttributeRef     &getAttribRef() const   { return myAttribRef; }

    int         isValid() const         { return myAttribRef.isValid(); }

    enum AttribClass
    {
        ATTRIB_INVALID = -1,
        ATTRIB_POINT = 0,
        ATTRIB_VERTEX,
        ATTRIB_PRIMITIVE,
        ATTRIB_DETAIL
    };
    AttribClass getAttribClass() const  { return myHType; }
    int         isPoint() const         { return myHType == ATTRIB_POINT; }
    int         isVertex() const        { return myHType == ATTRIB_VERTEX; }
    int         isPrimitive() const     { return myHType == ATTRIB_PRIMITIVE; }
    int         isDetail() const        { return myHType == ATTRIB_DETAIL; }
    

#if 0
    float                getFloat(const void *data, int idx) const ;
    void                 getString(UT_String &result, const void *data,
                                    int idx) const;
#else

    float               getFloat(GA_Offset obj, int idx) const;
    void                getString(UT_String &result, GA_Offset obj,
                                  int idx) const;
#endif

    GEO_RibAttribute     getRManDataType() const        { return myRManData; }

    const char  *getHName() const               { return myHName; }
    const char  *getRMName() const              { return myRManName; }
    const char  *getRMType() const              { return myRManType; }
    const char  *getRMFaceType() const          { return myRManFaceType; }
    int          getRMSize() const              { return myRManSize; }
    int          getRMOffset() const            { return myRManOffset; }

    // Here, RenderMan has 2 types of point attribute (vertex/varying)
    //  as well as two types of primitive attribute (uniform/constant).  What
    //  we do is overload the vertex flag to indicate both vertex and constant
    //  since the attribute is going to be either point/primitive from the
    //  Houdini end.
    int          isRManPerVertex() const        { return myRManVertex; }
    int          isRManConstant() const         { return myRManVertex; }

private:
    GA_ROAttributeRef    myAttribRef;
    char                *myHName;
    char                *myRManName;
    const char          *myRManType;
    const char          *myRManFaceType;
    GEO_RibAttribute     myRManData;
    AttribClass          myHType;
    int                  myHTupleSize;
    GA_Storage           myHStorage;
    int                  myRManOffset;
    int                  myRManSize;
    int                  myRManVertex;
};

#endif