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rotate.cpp File Reference

#include "rotate.h"
#include "math.h"

Defines
#define	PI   (3.14159)
#define	CIRC_45   (PI/4)
#define	CIRC_45H   (CIRC_45/2)
#define	CIRC_F1   (CIRC_45H)
#define	CIRC_F2   (CIRC_F1 + CIRC_45)
#define	CIRC_F3   (CIRC_F2 + CIRC_45)
#define	CIRC_F4   (CIRC_F3 + CIRC_45)
#define	CIRC_B1   (-CIRC_45H)
#define	CIRC_B2   (CIRC_B1 - CIRC_45)
#define	CIRC_B3   (CIRC_B2 - CIRC_45)
#define	CIRC_B4   (CIRC_B3 - CIRC_45)
Functions
void	rotate_setup ()
void	xy_scaling (int dir, float *x, float *y)
void	xy_components (int dir, float speed, float *x, float *y)
int	dir_opposite (int dir)
int	dir_cwise (int dir)
int	dir_ccwise (int dir)
int	dir_after_rotations (int dir, int rot)
int	dir_covered (int dir, int otherdir)
int	xy_to_dir (float x, float y)
Variables
float	x_scaling [DIR_SIZE]
float	y_scaling [DIR_SIZE]
float	dir_opposite_table [DIR_SIZE]
float	dir_cwise_table [DIR_SIZE]
float	dir_ccwise_table [DIR_SIZE]

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Define Documentation

#define CIRC_45   (PI/4)

#define CIRC_45H   (CIRC_45/2)

#define CIRC_B1   (-CIRC_45H)

#define CIRC_B2   (CIRC_B1 - CIRC_45)

#define CIRC_B3   (CIRC_B2 - CIRC_45)

#define CIRC_B4   (CIRC_B3 - CIRC_45)

#define CIRC_F1   (CIRC_45H)

#define CIRC_F2   (CIRC_F1 + CIRC_45)

#define CIRC_F3   (CIRC_F2 + CIRC_45)

#define CIRC_F4   (CIRC_F3 + CIRC_45)

#define PI   (3.14159)

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Function Documentation

int dir_after_rotations (  int    dir, int    rot )

int dir_ccwise (  int    dir )

int dir_covered (  int    dir, int    otherdir )

see note below

int dir_cwise (  int    dir )

int dir_opposite (  int    dir )

void rotate_setup (    )

void xy_components (  int    dir, float    speed, float *    x, float *    y )

void xy_scaling (  int    dir, float *    x, float *    y )

int xy_to_dir (  float    x, float    y )

uses atan2: slow

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Variable Documentation

float dir_ccwise_table[ DIR_SIZE ] [static]

float dir_cwise_table[ DIR_SIZE ] [static]

float dir_opposite_table[ DIR_SIZE ] [static]

float x_scaling[ DIR_SIZE ] [static]

float y_scaling[ DIR_SIZE ] [static]

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