/***************************************************************************/

/*                                                                         */

/*  afwarp.h                                                               */

/*                                                                         */

/*    Auto-fitter warping algorithm (specification).                       */

/*                                                                         */

/*  Copyright 2006, 2007 by                                                */

/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */

/*                                                                         */

/*  This file is part of the FreeType project, and may only be used,       */

/*  modified, and distributed under the terms of the FreeType project      */

/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */

/*  this file you indicate that you have read the license and              */

/*  understand and accept it fully.                                        */

/*                                                                         */

/***************************************************************************/

#ifndef __AFWARP_H__

#define __AFWARP_H__

#include "afhints.h"

FT_BEGIN_HEADER

#define AF_WARPER_SCALE

#define AF_WARPER_FLOOR( x )  ( (x) & ~63 )

#define AF_WARPER_CEIL( x )   AF_WARPER_FLOOR( (x) + 63 )

  typedef FT_Int32  AF_WarpScore;

  typedef struct  AF_WarperRec_

  {

    FT_Pos        x1, x2;

    FT_Pos        t1, t2;

    FT_Pos        x1min, x1max;

    FT_Pos        x2min, x2max;

    FT_Pos        w0, wmin, wmax;

    FT_Fixed      best_scale;

    FT_Pos        best_delta;

    AF_WarpScore  best_score;

    AF_WarpScore  best_distort;

  } AF_WarperRec, *AF_Warper;

  FT_LOCAL( void )

  af_warper_compute( AF_Warper      warper,

                     AF_GlyphHints  hints,

                     AF_Dimension   dim,

                     FT_Fixed      *a_scale,

                     FT_Fixed      *a_delta );

FT_END_HEADER

#endif /* __AFWARP_H__ */

/* END */