misc/libfreetype/include/freetype/ftbbox.h
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

/***************************************************************************/
/*                                                                         */
/*  ftbbox.h                                                               */
/*                                                                         */
/*    FreeType exact bbox computation (specification).                     */
/*                                                                         */
/*  Copyright 1996-2001, 2003, 2007, 2011 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.                                        */
/*                                                                         */
/***************************************************************************/


  /*************************************************************************/
  /*                                                                       */
  /* This component has a _single_ role: to compute exact outline bounding */
  /* boxes.                                                                */
  /*                                                                       */
  /* It is separated from the rest of the engine for various technical     */
  /* reasons.  It may well be integrated in `ftoutln' later.               */
  /*                                                                       */
  /*************************************************************************/


#ifndef __FTBBOX_H__
#define __FTBBOX_H__


#include <ft2build.h>
#include FT_FREETYPE_H

#ifdef FREETYPE_H
#error "freetype.h of FreeType 1 has been loaded!"
#error "Please fix the directory search order for header files"
#error "so that freetype.h of FreeType 2 is found first."
#endif


FT_BEGIN_HEADER


  /*************************************************************************/
  /*                                                                       */
  /* <Section>                                                             */
  /*    outline_processing                                                 */
  /*                                                                       */
  /*************************************************************************/


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    FT_Outline_Get_BBox                                                */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Compute the exact bounding box of an outline.  This is slower      */
  /*    than computing the control box.  However, it uses an advanced      */
  /*    algorithm which returns _very_ quickly when the two boxes          */
  /*    coincide.  Otherwise, the outline Bézier arcs are traversed to     */
  /*    extract their extrema.                                             */
  /*                                                                       */
  /* <Input>                                                               */
  /*    outline :: A pointer to the source outline.                        */
  /*                                                                       */
  /* <Output>                                                              */
  /*    abbox   :: The outline's exact bounding box.                       */
  /*                                                                       */
  /* <Return>                                                              */
  /*    FreeType error code.  0~means success.                             */
  /*                                                                       */
  /* <Note>                                                                */
  /*    If the font is tricky and the glyph has been loaded with           */
  /*    @FT_LOAD_NO_SCALE, the resulting BBox is meaningless.  To get      */
  /*    reasonable values for the BBox it is necessary to load the glyph   */
  /*    at a large ppem value (so that the hinting instructions can        */
  /*    properly shift and scale the subglyphs), then extracting the BBox  */
  /*    which can be eventually converted back to font units.              */
  /*                                                                       */
  FT_EXPORT( FT_Error )
  FT_Outline_Get_BBox( FT_Outline*  outline,
                       FT_BBox     *abbox );


  /* */


FT_END_HEADER

#endif /* __FTBBOX_H__ */


/* END */


/* Local Variables: */
/* coding: utf-8    */
/* End:             */