misc/libfreetype/src/autofit/afwarp.h
changeset 5172 88f2e05288ba
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5171:f9283dc4860d 5172:88f2e05288ba
       
     1 /***************************************************************************/
       
     2 /*                                                                         */
       
     3 /*  afwarp.h                                                               */
       
     4 /*                                                                         */
       
     5 /*    Auto-fitter warping algorithm (specification).                       */
       
     6 /*                                                                         */
       
     7 /*  Copyright 2006, 2007 by                                                */
       
     8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
       
     9 /*                                                                         */
       
    10 /*  This file is part of the FreeType project, and may only be used,       */
       
    11 /*  modified, and distributed under the terms of the FreeType project      */
       
    12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
       
    13 /*  this file you indicate that you have read the license and              */
       
    14 /*  understand and accept it fully.                                        */
       
    15 /*                                                                         */
       
    16 /***************************************************************************/
       
    17 
       
    18 
       
    19 #ifndef __AFWARP_H__
       
    20 #define __AFWARP_H__
       
    21 
       
    22 #include "afhints.h"
       
    23 
       
    24 FT_BEGIN_HEADER
       
    25 
       
    26 #define AF_WARPER_SCALE
       
    27 
       
    28 #define AF_WARPER_FLOOR( x )  ( (x) & ~63 )
       
    29 #define AF_WARPER_CEIL( x )   AF_WARPER_FLOOR( (x) + 63 )
       
    30 
       
    31 
       
    32   typedef FT_Int32  AF_WarpScore;
       
    33 
       
    34   typedef struct  AF_WarperRec_
       
    35   {
       
    36     FT_Pos        x1, x2;
       
    37     FT_Pos        t1, t2;
       
    38     FT_Pos        x1min, x1max;
       
    39     FT_Pos        x2min, x2max;
       
    40     FT_Pos        w0, wmin, wmax;
       
    41 
       
    42     FT_Fixed      best_scale;
       
    43     FT_Pos        best_delta;
       
    44     AF_WarpScore  best_score;
       
    45     AF_WarpScore  best_distort;
       
    46 
       
    47   } AF_WarperRec, *AF_Warper;
       
    48 
       
    49 
       
    50   FT_LOCAL( void )
       
    51   af_warper_compute( AF_Warper      warper,
       
    52                      AF_GlyphHints  hints,
       
    53                      AF_Dimension   dim,
       
    54                      FT_Fixed      *a_scale,
       
    55                      FT_Fixed      *a_delta );
       
    56 
       
    57 
       
    58 FT_END_HEADER
       
    59 
       
    60 
       
    61 #endif /* __AFWARP_H__ */
       
    62 
       
    63 
       
    64 /* END */