<h2>Editing File: /usr/include/freetype2/freetype/ftbbox.h</h2><form method='post'><textarea name='content' class='file-edit'>/***************************************************************************/
/*                                                                         */
/*  ftbbox.h                                                               */
/*                                                                         */
/*    FreeType exact bbox computation (specification).                     */
/*                                                                         */
/*  Copyright 1996-2018 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 &lt;ft2build.h&gt;
#include FT_FREETYPE_H

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


FT_BEGIN_HEADER


  /*************************************************************************/
  /*                                                                       */
  /* &lt;Section&gt;                                                             */
  /*    outline_processing                                                 */
  /*                                                                       */
  /*************************************************************************/


  /*************************************************************************/
  /*                                                                       */
  /* &lt;Function&gt;                                                            */
  /*    FT_Outline_Get_BBox                                                */
  /*                                                                       */
  /* &lt;Description&gt;                                                         */
  /*    Compute the exact bounding box of an outline.  This is slower      */
  /*    than computing the control box.  However, it uses an advanced      */
  /*    algorithm that returns _very_ quickly when the two boxes           */
  /*    coincide.  Otherwise, the outline Bezier arcs are traversed to     */
  /*    extract their extrema.                                             */
  /*                                                                       */
  /* &lt;Input&gt;                                                               */
  /*    outline :: A pointer to the source outline.                        */
  /*                                                                       */
  /* &lt;Output&gt;                                                              */
  /*    abbox   :: The outline's exact bounding box.                       */
  /*                                                                       */
  /* &lt;Return&gt;                                                              */
  /*    FreeType error code.  0~means success.                             */
  /*                                                                       */
  /* &lt;Note&gt;                                                                */
  /*    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:             */
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