The constrained rotation manipulator. More...

#include <trackmode.h>

Inheritance diagram for vcg::CylinderMode:

Public Member Functions
void	Apply (Trackball *trackball, Point3f new_point)
	Apply a rotation, function of the user mouse drag action.
void	Apply (Trackball *trackball, float WheelNotch)
	Apply a rotation, function of the user mouse wheel action.
	CylinderMode (Line3fN &ln, float s=0.0f)
	The line constructor.
	CylinderMode (const Point3f &origin, const Point3f &direction, float s=0.0f)
	The origin-direction constructor.
void	Draw (Trackball *trackball)
	Render this manipulator.
const char *	Name ()
	Return this manipulator's name.
Private Attributes
Line3fN	axis
	The axis, stored as a normalized line.
float	snap
	The rotational snap value.

Detailed Description

The constrained rotation manipulator.

This manipulator implements a rotation manipulator, that make the rotation constrained around a given axis.

The user can either drag the mouse or scroll the wheel, in either cases the rotation's angle is influenced by the radius of the trackball.

This is a stateless manipulator, result of the Apply functions is determined only either by the mouse coordinates or by the mouse wheel notch.

Definition at line 560 of file trackmode.h.

Constructor & Destructor Documentation

vcg::CylinderMode::CylinderMode	(	Line3fN &	ln,
		float	s = `0.0f`
	)		`[inline]`

The line constructor.

This manipulator needs to be initialized with an axis. This constructor can initialize it with a Line3f.

The line will be normalized.

Parameters:

ln	the line that represent the axis.
s	a rotational snap angle non negative

Definition at line 572 of file trackmode.h.

vcg::CylinderMode::CylinderMode	(	const Point3f &	origin,
		const Point3f &	direction,
		float	s = `0.0f`
	)		`[inline]`

The origin-direction constructor.

This manipulator needs to be initialized with a axis. This constructor can initialize it with two Point3f, representing a point and a vector.

Parameters:

origin	a point on the axis.
direction	the axis direction.
s	a rotational snap angle (non negative)

Definition at line 587 of file trackmode.h.

Member Function Documentation

void CylinderMode::Apply	(	Trackball *	trackball,
		Point3f	new_point
	)		`[virtual]`

Apply a rotation, function of the user mouse drag action.

The manipulated object is rotated around the axis.

if the axis is too perpendicular to view plane, the angle is specified only by the vertical component of the mouse drag and the radius.

Parameters:

trackball	the manipulator manager.
new_point	the new mouse pointer coordinate.

Reimplemented from vcg::TrackMode.

Definition at line 181 of file trackmode.cpp.

void CylinderMode::Apply	(	Trackball *	trackball,
		float	WheelNotch
	)		`[virtual]`

Apply a rotation, function of the user mouse wheel action.

The manipulated object is rotated around the axis.

Parameters:

trackball	the manipulator manager.
WheelNotch	the mouse wheel notch.

Reimplemented from vcg::TrackMode.

Definition at line 174 of file trackmode.cpp.

void CylinderMode::Draw ( Trackball * trackball ) [virtual]

Render this manipulator.

Parameters:

trackball the manipulator manager.

Reimplemented from vcg::TrackMode.

Definition at line 206 of file trackmode.cpp.

const char* vcg::CylinderMode::Name ( ) [inline, virtual]

Return this manipulator's name.

Returns:: the constant string "CylinderMode"

Reimplemented from vcg::TrackMode.

Definition at line 596 of file trackmode.h.

Member Data Documentation

Line3fN vcg::CylinderMode::axis [private]

The axis, stored as a normalized line.

Definition at line 628 of file trackmode.h.

float vcg::CylinderMode::snap [private]

The rotational snap value.

Definition at line 630 of file trackmode.h.

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

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation