fttrigon.c File Reference

#include <ft2build.h>

Go to the source code of this file.

Macros
#define	FT_TRIG_SCALE   0xDBD95B16UL
#define	FT_TRIG_SAFE_MSB   29
#define	FT_TRIG_MAX_ITERS   23
#define	FT_SIGN_LONG(x)   ( (x) >> ( FT_SIZEOF_LONG * 8 - 1 ) )
#define	FT_SIGN_INT(x)   ( (x) >> ( FT_SIZEOF_INT * 8 - 1 ) )
#define	FT_SIGN_INT32(x)   ( (x) >> 31 )
#define	FT_SIGN_INT16(x)   ( (x) >> 15 )

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

Macro Definition Documentation

FT_SIGN_INT

#define FT_SIGN_INT

(

x

)

( (x) >> ( FT_SIZEOF_INT * 8 - 1 ) )

Definition at line 354 of file fttrigon.c.

FT_SIGN_INT16

#define FT_SIGN_INT16

(

x

)

( (x) >> 15 )

Definition at line 356 of file fttrigon.c.

FT_SIGN_INT32

#define FT_SIGN_INT32

(

x

)

( (x) >> 31 )

Definition at line 355 of file fttrigon.c.

FT_SIGN_LONG

#define FT_SIGN_LONG

(

x

)

( (x) >> ( FT_SIZEOF_LONG * 8 - 1 ) )

Definition at line 353 of file fttrigon.c.

FT_TRIG_MAX_ITERS

#define FT_TRIG_MAX_ITERS   23

Definition at line 46 of file fttrigon.c.

FT_TRIG_SAFE_MSB

#define FT_TRIG_SAFE_MSB   29

Definition at line 43 of file fttrigon.c.

FT_TRIG_SCALE

#define FT_TRIG_SCALE   0xDBD95B16UL

Definition at line 39 of file fttrigon.c.

Referenced by FT_Cos(), FT_Tan(), and FT_Vector_Unit().

Function Documentation

FT_Angle_Diff()

FT_Angle_Diff	(	FT_Angle	angle1,
		FT_Angle	angle2
	)

Definition at line 475 of file fttrigon.c.

References cordic::angle2, FT_Angle, FT_ANGLE_2PI, and FT_ANGLE_PI.

FT_Atan2()

FT_Atan2	(	FT_Fixed	dx,
		FT_Fixed	dy
	)

Definition at line 319 of file fttrigon.c.

References FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Outline_Transform(), and FT_Stroker_LineTo().

FT_Cos()

FT_Cos

(

FT_Angle

angle

)

Definition at line 278 of file fttrigon.c.

References FT_TRIG_SCALE, FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Sin().

FT_Sin()

FT_Sin

(

FT_Angle

angle

)

Definition at line 294 of file fttrigon.c.

References FT_ANGLE_PI2, FT_Cos(), and FT_EXPORT_DEF.

FT_Tan()

FT_Tan

(

FT_Angle

angle

)

Definition at line 303 of file fttrigon.c.

References FT_TRIG_SCALE, FT_Vector_::x, and FT_Vector_::y.

FT_Vector_From_Polar()

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

Definition at line 461 of file fttrigon.c.

References FT_Angle, FT_EXPORT_DEF, FT_Vector_Rotate(), FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Stroker_LineTo().

FT_Vector_Length()

FT_Vector_Length

(

FT_Vector *

vec

)

Definition at line 400 of file fttrigon.c.

References FT_ABS, vec, FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Hypot(), FT_Outline_EmboldenXY(), and FT_Stroker_LineTo().

FT_Vector_Polarize()

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

Definition at line 434 of file fttrigon.c.

References vec, FT_Vector_::x, and FT_Vector_::y.

FT_Vector_Rotate()

FT_Vector_Rotate	(	FT_Vector *	vec,
		FT_Angle	angle
	)

Definition at line 362 of file fttrigon.c.

References FT_Vector_::x, and FT_Vector_::y.

Referenced by FT_Vector_From_Polar().

FT_Vector_Unit()

FT_Vector_Unit	(	FT_Vector *	vec,
		FT_Angle	angle
	)

Definition at line 340 of file fttrigon.c.

References FT_TRIG_SCALE, FT_Vector_::x, and FT_Vector_::y.