mesh_conv::MC_trackball Class Reference

A container class to deal with a trackball. More...

Collaboration diagram for mesh_conv::MC_trackball:

[legend]

List of all members.

Public Member Functions
	MC_trackball ()
	~MC_trackball ()
	classical destructor
const MC_quaternion &	quaternion () const
	get the current quaternion
MC_quaternion &	quaternion ()
	get the current quaternion
const MC_quaternion &	d_quaternion () const
	get the quaternion to apply
MC_quaternion &	d_quaternion ()
	get the quaternion to apply
double	project_to_disc (const double &x, const double &y) const
	return the distance to disc for the 3D coordinate
MC_trackball &	set_2d_coords (const double &x0, const double &y0, const double &x1, const double &y1)
	given a set of 2d coords difference, return the corresponding quaternion
MC_trackball &	apply_rotation ()
	multiply d_q to current_q
MC_trackball &	no_motion ()
	Set d_q to 0.
Public Attributes
double	disc_radius
	internal parameter of the disc radius
Private Attributes
MC_quaternion	current_q
	the current quaternion
MC_quaternion	d_q
	the quaternion to apply

---

Detailed Description

A container class to deal with a trackball.

---

Constructor & Destructor Documentation

mesh_conv::MC_trackball::MC_trackball

(

)

initial constructor

References disc_radius.

mesh_conv::MC_trackball::~MC_trackball

(

)

classical destructor

---

Member Function Documentation

MC_trackball & mesh_conv::MC_trackball::apply_rotation

(

)

multiply d_q to current_q

References mesh_conv::MC_quaternion::conjugated(), current_q, and d_q.

Here is the call graph for this function:

MC_quaternion & mesh_conv::MC_trackball::d_quaternion

(

)

get the quaternion to apply

References d_q.

const MC_quaternion & mesh_conv::MC_trackball::d_quaternion

(

)

const

get the quaternion to apply

References d_q.

MC_trackball & mesh_conv::MC_trackball::no_motion

(

)

Set d_q to 0.

References d_q.

double mesh_conv::MC_trackball::project_to_disc	(	const double &	x,
		const double &	y
	)			const

return the distance to disc for the 3D coordinate

References disc_radius.

Referenced by set_2d_coords().

MC_quaternion & mesh_conv::MC_trackball::quaternion

(

)

get the current quaternion

References current_q.

const MC_quaternion & mesh_conv::MC_trackball::quaternion

(

)

const

get the current quaternion

References current_q.

Referenced by mesh_conv::MC_navigator_tool::current_cam1(), mesh_conv::MC_navigator_tool::current_light1(), mesh_conv::MC_navigator_tool::go_forward_trackball_cam1(), mesh_conv::MC_navigator_tool::go_right_trackball_cam1(), mesh_conv::MC_navigator_tool::go_up_trackball_cam1(), mesh_conv::MC_navigator_tool::read_cam1(), mesh_conv::MC_navigator_tool::read_light1(), mesh_conv::MC_navigator_tool::write_cam1(), and mesh_conv::MC_navigator_tool::write_light1().

MC_trackball & mesh_conv::MC_trackball::set_2d_coords	(	const double &	x0,
		const double &	y0,
		const double &	x1,
		const double &	y1
	)

given a set of 2d coords difference, return the corresponding quaternion

References mesh_conv::MC_v3d::cross(), d_q, disc_radius, mesh_conv::MC_v3d::norm(), and project_to_disc().

Here is the call graph for this function:

---

Member Data Documentation

MC_quaternion mesh_conv::MC_trackball::current_q [private]

the current quaternion

Referenced by apply_rotation(), and quaternion().

MC_quaternion mesh_conv::MC_trackball::d_q [private]

the quaternion to apply

Referenced by apply_rotation(), d_quaternion(), no_motion(), and set_2d_coords().

double mesh_conv::MC_trackball::disc_radius

internal parameter of the disc radius

Referenced by MC_trackball(), project_to_disc(), and set_2d_coords().

---

The documentation for this class was generated from the following files:

• /home/damien/work/2009_10_CPE_tp_deformation/CPE_tp_deformation_surface/tp_cpe_deformation_surface_pgm_etudiant/external/include/MC_trackball.hpp
• /home/damien/work/2009_10_CPE_tp_deformation/CPE_tp_deformation_surface/tp_cpe_deformation_surface_pgm_etudiant/external/src/MC_trackball.cpp