arcball.c File Reference

Mouse trackball rotation functions. More...

#include "global.h"
#include "glview.h"

Include dependency graph for arcball.c:

Go to the source code of this file.

Functions
void	rotate_quat (project *this_proj, vec4_t q, int status, int axis)
	rotate using quaternion
vec3_t	get_arc_ball_vector (glwin *view, int x, int y)
void	arc_ball_rotation (glwin *view, int x, int y)
	Perform arcball rotation.

Variables
vec3_t	arc_ball_init
vec3_t	arc_ball_new
vec4_t	old_rotation_quaternion

Detailed Description

Mouse trackball rotation functions.

Author

Sébastien Le Roux sebas.nosp@m.tien.nosp@m..lero.nosp@m.ux@i.nosp@m.pcms..nosp@m.unis.nosp@m.tra.f.nosp@m.r

Definition in file arcball.c.

Function Documentation

arc_ball_rotation()

void arc_ball_rotation	(	glwin *	view,
		int	x,
		int	y )

Perform arcball rotation.

Parameters

view	the target glwin
x	x position
y	y position

Definition at line 73 of file arcball.c.

get_arc_ball_vector()

vec3_t get_arc_ball_vector	(	glwin *	view,
		int	x,
		int	y )

Definition at line 46 of file arcball.c.

rotate_quat()

void rotate_quat ( project * this_proj, vec4_t q, int status, int axis )

extern

rotate using quaternion

Parameters

this_proj	the target project
q	rotation quaternion
status	selection status, 0 = non selected atom(s), 1 = selected atom(s), 2 = all atom(s)
axis	0 = model, 1 = eye

Definition at line 269 of file atom_move.c.

Variable Documentation

arc_ball_init

vec3_t arc_ball_init

Definition at line 42 of file arcball.c.

arc_ball_new

vec3_t arc_ball_new

Definition at line 43 of file arcball.c.

old_rotation_quaternion

vec4_t old_rotation_quaternion

Definition at line 44 of file arcball.c.