Trackball.cpp File Reference

#include "Trackball.h"
#include <math.h>

Include dependency graph for Trackball.cpp:

Go to the source code of this file.

Functions
void	startTrackball (long x, long y, long originX, long originY, long width, long height)
void	rollToTrackball (long x, long y, float rot[4])
static void	rotation2Quat (float *A, float *q)
void	addToRotationTrackball (float *dA, float *A)

Variables
static const float	kTol = 0.001
static const float	kRad2Deg = 180. / 3.1415927
static const float	kDeg2Rad = 3.1415927 / 180.
float	gRadiusTrackball
float	gStartPtTrackball [3]
float	gEndPtTrackball [3]
long	gXCenterTrackball = 0
long	gYCenterTrackball = 0

Function Documentation

addToRotationTrackball()

void addToRotationTrackball	(	float *	dA,
		float *	A
	)

Definition at line 168 of file Trackball.cpp.

References kRad2Deg, and rotation2Quat().

Referenced by if(), and mouseMovedNoButton().

rollToTrackball()

void rollToTrackball	(	long	x,
		long	y,
		float	rot[4]
	)

Definition at line 104 of file Trackball.cpp.

References gEndPtTrackball, gRadiusTrackball, gStartPtTrackball, gXCenterTrackball, gYCenterTrackball, kRad2Deg, and kTol.

Referenced by mouseMovedButton().

rotation2Quat()

static void rotation2Quat ( float *  A, float *  q  )

static

Definition at line 153 of file Trackball.cpp.

References kDeg2Rad.

Referenced by addToRotationTrackball().

startTrackball()

void startTrackball	(	long	x,
		long	y,
		long	originX,
		long	originY,
		long	width,
		long	height
	)

Definition at line 62 of file Trackball.cpp.

References gRadiusTrackball, gStartPtTrackball, gXCenterTrackball, gYCenterTrackball, height, and width.

Referenced by if().

Variable Documentation

gEndPtTrackball

float gEndPtTrackball[3]

Definition at line 58 of file Trackball.cpp.

Referenced by rollToTrackball().

gRadiusTrackball

float gRadiusTrackball

Definition at line 56 of file Trackball.cpp.

Referenced by rollToTrackball(), and startTrackball().

gStartPtTrackball

float gStartPtTrackball[3]

Definition at line 57 of file Trackball.cpp.

Referenced by rollToTrackball(), and startTrackball().

gXCenterTrackball

long gXCenterTrackball = 0

Definition at line 59 of file Trackball.cpp.

Referenced by rollToTrackball(), and startTrackball().

gYCenterTrackball

long gYCenterTrackball = 0

Definition at line 59 of file Trackball.cpp.

Referenced by rollToTrackball(), and startTrackball().

kDeg2Rad

const float kDeg2Rad = 3.1415927 / 180.

static

Definition at line 54 of file Trackball.cpp.

Referenced by rotation2Quat().

kRad2Deg

const float kRad2Deg = 180. / 3.1415927

static

Definition at line 53 of file Trackball.cpp.

Referenced by addToRotationTrackball(), and rollToTrackball().

kTol

const float kTol = 0.001

static

Definition at line 52 of file Trackball.cpp.

Referenced by rollToTrackball().