fttrigon.h File Reference

#include <FT_FREETYPE_H>

Go to the source code of this file.

Macros
#define	FT_ANGLE_2PI   ( FT_ANGLE_PI * 2 )
#define	FT_ANGLE_PI   ( 180L << 16 )
#define	FT_ANGLE_PI2   ( FT_ANGLE_PI / 2 )
#define	FT_ANGLE_PI4   ( FT_ANGLE_PI / 4 )

Functions
	FT_Angle_Diff (FT_Angle angle1, FT_Angle angle2)
	FT_Atan2 (FT_Fixed x, FT_Fixed y)
	FT_Cos (FT_Angle angle)
	FT_Sin (FT_Angle angle)
	FT_Tan (FT_Angle angle)
	FT_Vector_From_Polar (FT_Vector *vec, FT_Fixed length, FT_Angle angle)
	FT_Vector_Length (FT_Vector *vec)
	FT_Vector_Polarize (FT_Vector *vec, FT_Fixed *length, FT_Angle *angle)
	FT_Vector_Rotate (FT_Vector *vec, FT_Angle angle)
	FT_Vector_Unit (FT_Vector *vec, FT_Angle angle)

Variables
FT_BEGIN_HEADER typedef FT_Fixed	FT_Angle

Macro Definition Documentation

#define FT_ANGLE_2PI   ( FT_ANGLE_PI * 2 )

Definition at line 76 of file fttrigon.h.

Referenced by FT_Angle_Diff(), test_atan2(), test_cos(), test_length(), test_rotate(), test_sin(), and test_unit().

#define FT_ANGLE_PI   ( 180L << 16 )

Definition at line 64 of file fttrigon.h.

Referenced by FT_Angle_Diff(), ft_stroker_arcto(), ft_stroker_cap(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), FT_Stroker_EndSubPath(), ft_stroker_outside(), and ft_trig_pseudo_rotate().

#define FT_ANGLE_PI2   ( FT_ANGLE_PI / 2 )

Definition at line 88 of file fttrigon.h.

Referenced by FT_Outline_Embolden(), FT_Sin(), ft_stroke_border_arcto(), FT_Stroker_LineTo(), ft_stroker_subpath_start(), ft_trig_pseudo_polarize(), ft_trig_pseudo_rotate(), and test_tan().

#define FT_ANGLE_PI4   ( FT_ANGLE_PI / 4 )

Definition at line 100 of file fttrigon.h.

Function Documentation

FT_Angle_Diff	(	FT_Angle	angle1,
		FT_Angle	angle2
	)

Definition at line 529 of file fttrigon.c.

References FT_Angle, FT_ANGLE_2PI, and FT_ANGLE_PI.

Referenced by ft_angle_mean(), ft_conic_is_small_enough(), ft_cubic_is_small_enough(), FT_Outline_Embolden(), ft_stroker_arcto(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), FT_Stroker_EndSubPath(), ft_stroker_inside(), ft_stroker_outside(), and ft_stroker_process_corner().

FT_Atan2	(	FT_Fixed	x,
		FT_Fixed	y
	)

Definition at line 374 of file fttrigon.c.

References ft_trig_prenorm(), ft_trig_pseudo_polarize(), FT_Vector_::x, and FT_Vector_::y.

Referenced by ft_conic_is_small_enough(), ft_cubic_is_small_enough(), FT_Outline_Embolden(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), FT_Stroker_LineTo(), and test_atan2().

FT_Cos

(

FT_Angle

angle

)

Definition at line 333 of file fttrigon.c.

References FT_TRIG_COSCALE, ft_trig_pseudo_rotate(), FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Outline_Embolden(), FT_Sin(), ft_stroke_border_arcto(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), ft_stroker_inside(), ft_stroker_outside(), and test_cos().

FT_Sin

(

FT_Angle

angle

)

Definition at line 349 of file fttrigon.c.

References FT_ANGLE_PI2, and FT_Cos().

Referenced by ft_stroke_border_arcto(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), ft_stroker_outside(), and test_sin().

FT_Tan

(

FT_Angle

angle

)

Definition at line 358 of file fttrigon.c.

References FT_DivFix(), FT_TRIG_COSCALE, ft_trig_pseudo_rotate(), FT_Vector_::x, and FT_Vector_::y.

Referenced by ft_stroker_inside(), and test_tan().

FT_Vector_From_Polar	(	FT_Vector *	vec,
		FT_Fixed	length,
		FT_Angle	angle
	)

Definition at line 515 of file fttrigon.c.

References FT_Vector_Rotate().

Referenced by FT_Outline_Embolden(), ft_stroke_border_arcto(), ft_stroker_cap(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), ft_stroker_inside(), FT_Stroker_LineTo(), ft_stroker_outside(), and ft_stroker_subpath_start().

FT_Vector_Length

(

FT_Vector *

vec

)

Definition at line 455 of file fttrigon.c.

References ft_trig_downscale(), ft_trig_prenorm(), ft_trig_pseudo_polarize(), vec, FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), FT_Stroker_LineTo(), and test_length().

FT_Vector_Polarize	(	FT_Vector *	vec,
		FT_Fixed *	length,
		FT_Angle *	angle
	)

Definition at line 489 of file fttrigon.c.

References ft_trig_downscale(), ft_trig_prenorm(), ft_trig_pseudo_polarize(), vec, FT_Vector_::x, and FT_Vector_::y.

FT_Vector_Rotate	(	FT_Vector *	vec,
		FT_Angle	angle
	)

Definition at line 417 of file fttrigon.c.

References FT_SIGN_LONG, ft_trig_downscale(), ft_trig_prenorm(), ft_trig_pseudo_rotate(), half, FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Vector_From_Polar(), and test_rotate().

FT_Vector_Unit	(	FT_Vector *	vec,
		FT_Angle	angle
	)

Definition at line 395 of file fttrigon.c.

References FT_TRIG_COSCALE, and ft_trig_pseudo_rotate().

Referenced by test_unit().

Variable Documentation

FT_BEGIN_HEADER typedef FT_Fixed FT_Angle

Definition at line 52 of file fttrigon.h.

Referenced by FT_Angle_Diff(), ft_conic_is_small_enough(), ft_cubic_is_small_enough(), FT_Outline_Embolden(), ft_stroke_border_arcto(), ft_stroker_arcto(), ft_stroker_cap(), FT_Stroker_ConicTo(), FT_Stroker_CubicTo(), FT_Stroker_EndSubPath(), ft_stroker_inside(), FT_Stroker_LineTo(), ft_stroker_outside(), and ft_stroker_process_corner().