trackball.cpp File Reference

#include <cmath>
#include <trackball.h>

Go to the source code of this file.

Macros
#define	TRACKBALLSIZE   (0.8f)
#define	RENORMCOUNT   97

Functions
static double	tb_project_to_sphere (double, double, double)
static void	normalize_quat (double[4])
void	vzero (double *v)
void	vset (double *v, double x, double y, double z)
void	vsub (const double *src1, const double *src2, double *dst)
void	vcopy (const double *v1, double *v2)
void	vcross (const double *v1, const double *v2, double *cross)
double	vlength (const double *v)
void	vscale (double *v, double div)
void	vnormal (double *v)
double	vdot (const double *v1, const double *v2)
void	vadd (const double *src1, const double *src2, double *dst)
void	trackball (double q[4], double p1x, double p1y, double p2x, double p2y)
void	axis_to_quat (double a[3], double phi, double q[4])
void	add_quats (double q1[4], double q2[4], double dest[4])
void	build_rotmatrix (float m[4][4], double q[4])

Macro Definition Documentation

RENORMCOUNT

#define RENORMCOUNT   97

Definition at line 261 of file trackball.cpp.

TRACKBALLSIZE

#define TRACKBALLSIZE   (0.8f)

Definition at line 67 of file trackball.cpp.

Function Documentation

add_quats()

void add_quats	(	double	q1[4],
		double	q2[4],
		double	dest[4]
	)

Definition at line 263 of file trackball.cpp.

References normalize_quat(), RENORMCOUNT, vadd(), vcopy(), vcross(), vdot(), and vscale().

axis_to_quat()

void axis_to_quat	(	double	a[3],
		double	phi,
		double	q[4]
	)

Definition at line 217 of file trackball.cpp.

References vcopy(), vnormal(), and vscale().

Referenced by trackball().

build_rotmatrix()

void build_rotmatrix	(	float	m[4][4],
		double	q[4]
	)

Definition at line 321 of file trackball.cpp.

Referenced by TRACK_BALL::Drag(), and TRACK_BALL::Interpolate().

normalize_quat()

static void normalize_quat ( double  q[4] )

static

Definition at line 306 of file trackball.cpp.

Referenced by add_quats().

tb_project_to_sphere()

static double tb_project_to_sphere ( double  r, double  x, double  y  )

static

Definition at line 230 of file trackball.cpp.

Referenced by trackball().

trackball()

void trackball	(	double	q[4],
		double	p1x,
		double	p1y,
		double	p2x,
		double	p2y
	)

Definition at line 166 of file trackball.cpp.

References axis_to_quat(), tb_project_to_sphere(), TRACKBALLSIZE, vcross(), vlength(), vset(), vsub(), and vzero().

Referenced by TRACK_BALL::Drag(), TRACK_BALL::initQuat(), and TRACK_BALL::Reset_T1().

vadd()

void vadd	(	const double *	src1,
		const double *	src2,
		double *	dst
	)

Definition at line 146 of file trackball.cpp.

Referenced by add_quats().

vcopy()

void vcopy	(	const double *	v1,
		double *	v2
	)

Definition at line 100 of file trackball.cpp.

References v1, and v2.

Referenced by add_quats(), axis_to_quat(), and vcross().

vcross()

void vcross	(	const double *	v1,
		const double *	v2,
		double *	cross
	)

Definition at line 109 of file trackball.cpp.

References v1, v2, and vcopy().

Referenced by add_quats(), and trackball().

vdot()

double vdot	(	const double *	v1,
		const double *	v2
	)

Definition at line 140 of file trackball.cpp.

References v1, and v2.

Referenced by add_quats().

vlength()

double vlength

(

const double *

v

)

Definition at line 120 of file trackball.cpp.

Referenced by trackball(), and vnormal().

vnormal()

void vnormal

(

double *

v

)

Definition at line 134 of file trackball.cpp.

References vlength(), and vscale().

Referenced by axis_to_quat().

vscale()

void vscale	(	double *	v,
		double	div
	)

Definition at line 126 of file trackball.cpp.

Referenced by add_quats(), axis_to_quat(), and vnormal().

vset()

void vset	(	double *	v,
		double	x,
		double	y,
		double	z
	)

Definition at line 84 of file trackball.cpp.

Referenced by trackball().

vsub()

void vsub	(	const double *	src1,
		const double *	src2,
		double *	dst
	)

Definition at line 92 of file trackball.cpp.

Referenced by trackball().

vzero()

void vzero

(

double *

v

)

Definition at line 76 of file trackball.cpp.

Referenced by trackball().