// Aqsis
// Copyright © 1997 - 2001, Paul C. Gregory
//
// Contact: pgregory@aqsis.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


/** \file
		\brief Implements libslxargs, analogous to Pixar's sloarg library.
		\author Douglas Ward (dsward@vidi.com)
*/

#ifndef SLX_H_INCLUDED
#define SLX_H_INCLUDED 1

#ifdef __cplusplus
extern "C"
{
#endif

    typedef enum {
        SLX_TYPE_UNKNOWN,
        SLX_TYPE_POINT,
        SLX_TYPE_COLOR,
        SLX_TYPE_SCALAR,
        SLX_TYPE_STRING,
        SLX_TYPE_SURFACE,
        SLX_TYPE_LIGHT,
        SLX_TYPE_DISPLACEMENT,
        SLX_TYPE_VOLUME,
        SLX_TYPE_TRANSFORMATION,
        SLX_TYPE_IMAGER,
        SLX_TYPE_VECTOR,
        SLX_TYPE_NORMAL,
        SLX_TYPE_MATRIX
    } SLX_TYPE;

    typedef enum {
        SLX_STOR_UNKNOWN,
        SLX_STOR_CONSTANT,
        SLX_STOR_VARIABLE,
        SLX_STOR_TEMPORARY,
        SLX_STOR_PARAMETER,
        SLX_STOR_GSTATE
    } SLX_STORAGE;

    typedef enum {
        SLX_DETAIL_UNKNOWN,
        SLX_DETAIL_VARYING,
        SLX_DETAIL_UNIFORM
    } SLX_DETAIL;

    typedef struct
    {
        float	xval;
        float	yval;
        float	zval;
    }
    SLX_POINT;

    typedef struct
    {
        float	val[4][4];
    }
    SLX_MATRIX;

    typedef float SLX_SCALAR;

    typedef struct SLXvissymdef
    {
        char *svd_name;
        SLX_TYPE svd_type;
        SLX_STORAGE svd_storage;
        SLX_DETAIL svd_detail;
        char *	svd_spacename;
        int	svd_arraylen;
        union {
            SLX_POINT	*pointval;
            SLX_SCALAR	*scalarval;
            SLX_MATRIX	*matrixval;
            char	**stringval;
        } svd_default;
    }
    SLX_VISSYMDEF;

#define NULL_SLXVISSYMDEF ((SLX_VISSYMDEF *)0)

    extern void SLX_SetPath ( char * path );
    extern char *SLX_GetPath ( void );
    extern int SLX_SetShader ( char * name );
    extern char *SLX_GetName ( void );
    extern SLX_TYPE SLX_GetType ( void );
    extern int SLX_GetNArgs ( void );
    extern SLX_VISSYMDEF *SLX_GetArgById ( int id );
    extern SLX_VISSYMDEF *SLX_GetArgByName ( char * name );
    extern SLX_VISSYMDEF *SLX_GetArrayArgElement( SLX_VISSYMDEF * array, int index );
    extern void SLX_EndShader ( void );
    extern char *SLX_TypetoStr ( SLX_TYPE type );
    extern char *SLX_StortoStr ( SLX_STORAGE storage );
    extern char *SLX_DetailtoStr ( SLX_DETAIL detail );
    extern void SLX_SetDSOPath ( char * path );

#ifdef __cplusplus
}
#endif

#endif /* SLX_H_INCLUDED */
