CS代考计算机代写 algorithm /***************************************************************************/

/***************************************************************************/
/* */
/* ftbbox.h */
/* */
/* FreeType exact bbox computation (specification). */
/* */
/* Copyright 1996-2015 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
#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

/*************************************************************************/
/* */
/*

*/
/* outline_processing */
/* */
/*************************************************************************/

/*************************************************************************/
/* */
/* */
/* FT_Outline_Get_BBox */
/* */
/* */
/* 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 Bézier arcs are traversed to */
/* extract their extrema. */
/* */
/* */
/* outline :: A pointer to the source outline. */
/* */
/* */
/* abbox :: The outline’s exact bounding box. */
/* */
/* */
/* FreeType error code. 0~means success. */
/* */
/* */
/* 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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