misc/libfreetype/src/base/ftgasp.c
author unc0rr
Wed, 25 Jul 2012 16:24:30 +0400
changeset 7433 c7fff3e61d49
parent 5172 88f2e05288ba
permissions -rw-r--r--
- Implement AI land marks which only used to tracks visited areas on the map for now. Significantly reduces wasting of cpu time by AI checking same place several times (10x or even more in rare cases) - More branching in walk algorythm which allows for better coverage of reachable places. Sometimes makes AI perform ridiculous jumping just to make a tiny step. - Small fixes/adjustments

/***************************************************************************/
/*                                                                         */
/*  ftgasp.c                                                               */
/*                                                                         */
/*    Access of TrueType's `gasp' table (body).                            */
/*                                                                         */
/*  Copyright 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.                                        */
/*                                                                         */
/***************************************************************************/


#include <ft2build.h>
#include FT_GASP_H
#include FT_INTERNAL_TRUETYPE_TYPES_H


  FT_EXPORT_DEF( FT_Int )
  FT_Get_Gasp( FT_Face  face,
               FT_UInt  ppem )
  {
    FT_Int  result = FT_GASP_NO_TABLE;


    if ( face && FT_IS_SFNT( face ) )
    {
      TT_Face  ttface = (TT_Face)face;


      if ( ttface->gasp.numRanges > 0 )
      {
        TT_GaspRange  range     = ttface->gasp.gaspRanges;
        TT_GaspRange  range_end = range + ttface->gasp.numRanges;


        while ( ppem > range->maxPPEM )
        {
          range++;
          if ( range >= range_end )
            goto Exit;
        }

        result = range->gaspFlag;

        /* ensure that we don't have spurious bits */
        if ( ttface->gasp.version == 0 )
          result &= 3;
      }
    }
  Exit:
    return result;
  }


/* END */