DragController Class Reference

Auxiliary class to control dragger speed. The idea is that slowly moving the mouse forces the dragger to move only one inl/crl/z per (few) pixel(s), while moving it fast can have it cover many lines per pixel. More...

Public Member Functions
	DragController ()
	~DragController ()
void	dragInScreenSpace (bool fromstart, const Coord &projvec)
float	getFastMaxDragToMouseRatio () const
float	getFastMinDragToMouseRatio () const
float	getFastMouseSpeed () const
float	getLinearBackDragFrac () const
float	getSlowMaxDragToMouseRatio () const
float	getSlowMinDragToMouseRatio () const
float	getSlowMouseSpeed () const
void	init (const Coord &mousepos, double scalefactor=1.0, const Coord3 &dragdir=Coord3(0.0, 0.0, 0.0))
void	setFastMaxDragToMouseRatio (float distanceperpixel)
void	setFastMinDragToMouseRatio (float distanceperpixel)
void	setFastMouseSpeed (float pixelspersecond)
void	setLinearBackDragFrac (float fraction)
void	setSlowMaxDragToMouseRatio (float distanceperpixel)
void	setSlowMinDragToMouseRatio (float distanceperpixel)
void	setSlowMouseSpeed (float pixelspersecond)
void	transform (Coord3 &dragvec, const Coord &mousepos, double maxdragdist=mUdf(double))
void	transform (double &dragval, const Coord &mousepos, double maxdragdist=mUdf(double))

Protected Member Functions
double	absTransform (double dragval, const Coord &mousepos, double maxdragdist=mUdf(double))
void	manageScreenDragging (double &dragval, const Coord &mousepos)
void	reInit (const Coord &mousepos)

Protected Attributes
Coord3	dragdir_
int	dragsign_
float	fastmaxdragtomouseratio_
float	fastmindragtomouseratio_
float	fastmousespeed_
Coord	initmousepos_
float	linearbackdragfrac_
double	maxdragval_
int	prevdragtime_
double	prevdragval_
Coord	prevmousepos_
double	prevtransval_
double	scalefactor_
float	screendragfactor_
bool	screendragmode_
Coord	screendragprojvec_
float	slowmaxdragtomouseratio_
float	slowmindragtomouseratio_
float	slowmousespeed_

Detailed Description

Auxiliary class to control dragger speed. The idea is that slowly moving the mouse forces the dragger to move only one inl/crl/z per (few) pixel(s), while moving it fast can have it cover many lines per pixel.

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Constructor & Destructor Documentation

DragController()

DragController::DragController

(

)

~DragController()

DragController::~DragController

(

)

Member Function Documentation

absTransform()

double DragController::absTransform ( double  dragval, const Coord &  mousepos, double  maxdragdist = mUdf(double)  )

protected

dragInScreenSpace()

void DragController::dragInScreenSpace	(	bool	fromstart,
		const Coord &	projvec
	)

getFastMaxDragToMouseRatio()

float DragController::getFastMaxDragToMouseRatio

(

)

const

getFastMinDragToMouseRatio()

float DragController::getFastMinDragToMouseRatio

(

)

const

getFastMouseSpeed()

float DragController::getFastMouseSpeed

(

)

const

getLinearBackDragFrac()

float DragController::getLinearBackDragFrac

(

)

const

If moving back towards initial position, 'fraction' defines where the dragger starts acting linear to reach its origin at the same time as the mouse pointer.

getSlowMaxDragToMouseRatio()

float DragController::getSlowMaxDragToMouseRatio

(

)

const

getSlowMinDragToMouseRatio()

float DragController::getSlowMinDragToMouseRatio

(

)

const

getSlowMouseSpeed()

float DragController::getSlowMouseSpeed

(

)

const

init()

void DragController::init	(	const Coord &	mousepos,
		double	scalefactor = 1.0,
		const Coord3 &	dragdir = Coord3(0.0, 0.0, 0.0)
	)

manageScreenDragging()

void DragController::manageScreenDragging ( double &  dragval, const Coord &  mousepos  )

protected

reInit()

void DragController::reInit ( const Coord &  mousepos )

protected

setFastMaxDragToMouseRatio()

void DragController::setFastMaxDragToMouseRatio

(

float

distanceperpixel

)

setFastMinDragToMouseRatio()

void DragController::setFastMinDragToMouseRatio

(

float

distanceperpixel

)

setFastMouseSpeed()

void DragController::setFastMouseSpeed

(

float

pixelspersecond

)

setLinearBackDragFrac()

void DragController::setLinearBackDragFrac

(

float

fraction

)

setSlowMaxDragToMouseRatio()

void DragController::setSlowMaxDragToMouseRatio

(

float

distanceperpixel

)

setSlowMinDragToMouseRatio()

void DragController::setSlowMinDragToMouseRatio

(

float

distanceperpixel

)

setSlowMouseSpeed()

void DragController::setSlowMouseSpeed

(

float

pixelspersecond

)

transform() [1/2]

void DragController::transform	(	Coord3 &	dragvec,
		const Coord &	mousepos,
		double	maxdragdist = mUdf(double)
	)

transform() [2/2]

void DragController::transform	(	double &	dragval,
		const Coord &	mousepos,
		double	maxdragdist = mUdf(double)
	)

Member Data Documentation

dragdir_

Coord3 DragController::dragdir_

protected

dragsign_

int DragController::dragsign_

protected

fastmaxdragtomouseratio_

float DragController::fastmaxdragtomouseratio_

protected

fastmindragtomouseratio_

float DragController::fastmindragtomouseratio_

protected

fastmousespeed_

float DragController::fastmousespeed_

protected

initmousepos_

Coord DragController::initmousepos_

protected

linearbackdragfrac_

float DragController::linearbackdragfrac_

protected

maxdragval_

double DragController::maxdragval_

protected

prevdragtime_

int DragController::prevdragtime_

protected

prevdragval_

double DragController::prevdragval_

protected

prevmousepos_

Coord DragController::prevmousepos_

protected

prevtransval_

double DragController::prevtransval_

protected

scalefactor_

double DragController::scalefactor_

protected

screendragfactor_

float DragController::screendragfactor_

protected

screendragmode_

bool DragController::screendragmode_

protected

screendragprojvec_

Coord DragController::screendragprojvec_

protected

slowmaxdragtomouseratio_

float DragController::slowmaxdragtomouseratio_

protected

slowmindragtomouseratio_

float DragController::slowmindragtomouseratio_

protected

slowmousespeed_

float DragController::slowmousespeed_

protected