www.pudn.com > freetype.rar > ftbbox.h

/***************************************************************************/ 
/*                                                                         */ 
/*  ftbbox.h                                                               */ 
/*                                                                         */ 
/*    FreeType exact bbox computation (specification).                     */ 
/*                                                                         */ 
/*  Copyright 1996-2001 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 "freetype/freetype.h" 
 
 
FT_BEGIN_HEADER 
 
 
  /*************************************************************************/ 
  /*                                                                       */ 
  /* 
                                                             */ 
  /*    outline_processing                                                 */ 
  /*                                                                       */ 
  /*************************************************************************/ 
 
 
  /*************************************************************************/ 
  /*                                                                       */ 
  /*                                                             */ 
  /*    FT_Outline_Get_BBox                                                */ 
  /*                                                                       */ 
  /*                                                          */ 
  /*    Computes 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 Bezier arcs are walked over to   */ 
  /*    extract their extrema.                                             */ 
  /*                                                                       */ 
  /*                                                                */ 
  /*    outline :: A pointer to the source outline.                        */ 
  /*                                                                       */ 
  /* 
                                                              */ 
  /*    abbox   :: The outline's exact bounding box.                       */ 
  /*                                                                       */ 
  /*                                                               */ 
  /*    FreeType error code.  0 means success.                             */ 
  /*                                                                       */ 
  FT_EXPORT( FT_Error ) 
  FT_Outline_Get_BBox( FT_Outline*  outline, 
                       FT_BBox     *abbox ); 
 
 
  /* */ 
 
 
FT_END_HEADER 
 
#endif /* __FTBBOX_H__ */ 
 
 
/* END */