/***************************************************************************/ /* */ /* 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 #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 Bezier 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: */