dynamics.c File Reference

Handles the dynamics of the wiimote. More...

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "definitions.h"
#include "wiiuse_internal.h"
#include "ir.h"
#include "dynamics.h"

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Functions
void	calculate_orientation (struct accel_t *ac, struct vec3w_t *accel, struct orient_t *orient, int smooth)
	Calculate the roll, pitch, yaw. More...
void	calculate_gforce (struct accel_t *ac, struct vec3w_t *accel, struct gforce_t *gforce)
	Calculate the gravity forces on each axis. More...
static float	applyCalibration (float inval, float minval, float maxval, float centerval)
void	calc_joystick_state (struct joystick_t *js, float x, float y)
	Calculate the angle and magnitude of a joystick. More...
void	apply_smoothing (struct accel_t *ac, struct orient_t *orient, int type)

Detailed Description

Handles the dynamics of the wiimote.

The file includes functions that handle the dynamics of the wiimote. Such dynamics include orientation and motion sensing.

Function Documentation

apply_smoothing()

void apply_smoothing	(	struct accel_t *	ac,
		struct orient_t *	orient,
		int	type
	)

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applyCalibration()

static float applyCalibration ( float  inval, float  minval, float  maxval, float  centerval  )

static

calc_joystick_state()

void calc_joystick_state	(	struct joystick_t *	js,
		float	x,
		float	y
	)

Calculate the angle and magnitude of a joystick.

Parameters

js	[out] Pointer to a joystick_t structure.
x	The raw x-axis value.
y	The raw y-axis value.

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calculate_gforce()

void calculate_gforce	(	struct accel_t *	ac,
		struct vec3w_t *	accel,
		struct gforce_t *	gforce
	)

Calculate the gravity forces on each axis.

Parameters

ac	An accelerometer (accel_t) structure.
accel	[in] Pointer to a vec3w_t structure that holds the raw acceleration data.
gforce	[out] Pointer to a gforce_t structure that will hold the gravity force data.

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calculate_orientation()

void calculate_orientation	(	struct accel_t *	ac,
		struct vec3w_t *	accel,
		struct orient_t *	orient,
		int	smooth
	)

Calculate the roll, pitch, yaw.

Parameters

ac	An accelerometer (accel_t) structure.
accel	[in] Pointer to a vec3w_t structure that holds the raw acceleration data.
orient	[out] Pointer to a orient_t structure that will hold the orientation data.
rorient	[out] Pointer to a orient_t structure that will hold the non-smoothed orientation data.
smooth	If smoothing should be performed on the angles calculated. 1 to enable, 0 to disable.

Given the raw acceleration data from the accelerometer struct, calculate the orientation of the device and set it in the orient parameter.

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