• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /****************************************************************************
2  *
3  * afwarp.h
4  *
5  *   Auto-fitter warping algorithm (specification).
6  *
7  * Copyright 2006-2018 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) & ~FT_TYPEOF( 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 #ifdef AF_CONFIG_OPTION_USE_WARPER
51   FT_LOCAL( void )
52   af_warper_compute( AF_Warper      warper,
53                      AF_GlyphHints  hints,
54                      AF_Dimension   dim,
55                      FT_Fixed      *a_scale,
56                      FT_Fixed      *a_delta );
57 #endif
58 
59 
60 FT_END_HEADER
61 
62 
63 #endif /* AFWARP_H_ */
64 
65 
66 /* END */
67