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Diffstat (limited to 'nx-X11/extras/freetype2/src/autohint/ahangles.h')
| -rw-r--r-- | nx-X11/extras/freetype2/src/autohint/ahangles.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/nx-X11/extras/freetype2/src/autohint/ahangles.h b/nx-X11/extras/freetype2/src/autohint/ahangles.h new file mode 100644 index 000000000..f46bfaad7 --- /dev/null +++ b/nx-X11/extras/freetype2/src/autohint/ahangles.h @@ -0,0 +1,64 @@ +/***************************************************************************/ +/* */ +/* ahangles.h */ +/* */ +/* A routine used to compute vector angles with limited accuracy */ +/* and very high speed (specification). */ +/* */ +/* Copyright 2000-2001, 2002 Catharon Productions Inc. */ +/* Author: David Turner */ +/* */ +/* This file is part of the Catharon Typography Project and shall only */ +/* be used, modified, and distributed under the terms of the Catharon */ +/* Open Source License that should come with this file under the name */ +/* `CatharonLicense.txt'. By continuing to use, modify, or distribute */ +/* this file you indicate that you have read the license and */ +/* understand and accept it fully. */ +/* */ +/* Note that this license is compatible with the FreeType license. */ +/* */ +/***************************************************************************/ + + +#ifndef __AHANGLES_H__ +#define __AHANGLES_H__ + + +#include <ft2build.h> +#include FT_INTERNAL_OBJECTS_H +#include "ahtypes.h" + + +FT_BEGIN_HEADER + + + /* PI expressed in ah_angles -- we don't really need an important */ + /* precision, so 256 should be enough */ +#define AH_PI 256 +#define AH_2PI ( AH_PI * 2 ) +#define AH_HALF_PI ( AH_PI / 2 ) +#define AH_2PIMASK ( AH_2PI - 1 ) + + /* the number of bits used to express an arc tangent; */ + /* see the structure of the lookup table */ +#define AH_ATAN_BITS 8 + + extern + const AH_Angle ah_arctan[1L << AH_ATAN_BITS]; + + + FT_LOCAL( AH_Angle ) + ah_angle( FT_Vector* v ); + + + FT_LOCAL( AH_Angle ) + ah_angle_diff( AH_Angle angle1, + AH_Angle angle2 ); + + +FT_END_HEADER + +#endif /* __AHANGLES_H__ */ + + +/* END */ |