A scale engine for reciprocal (1/t) scales. More...

Public Member Functions
virtual void	autoScale (int maxSteps, double &x1, double &x2, double &stepSize) const
virtual QwtScaleDiv	divideScale (double x1, double x2, int numMajorSteps, int numMinorSteps, double stepSize=0.0) const
	Calculate a scale division.
virtual QwtScaleTransformation *	transformation () const
Protected Member Functions
QwtDoubleInterval	align (const QwtDoubleInterval &, double stepSize) const
	Align an interval to a step size.
Private Member Functions
QwtValueList	buildMajorTicks (const QwtDoubleInterval &interval, double stepSize) const
void	buildMinorTicks (const QwtValueList &majorTicks, int maxMinMark, double step, QwtValueList &, QwtValueList &) const
void	buildTicks (const QwtDoubleInterval &, double stepSize, int maxMinSteps, QwtValueList ticks[QwtScaleDiv::NTickTypes]) const

Detailed Description

A scale engine for reciprocal (1/t) scales.

Member Function Documentation

QwtDoubleInterval ReciprocalScaleEngine::align	(	const QwtDoubleInterval &	interval,
		double	stepSize
	)			const `[protected]`

Align an interval to a step size.

The limits of an interval are aligned that both are integer multiples of the step size.

Parameters:

	interval	Interval
	stepSize	Step size

void ReciprocalScaleEngine::autoScale	(	int	maxNumSteps,
		double &	x1,
		double &	x2,
		double &	stepSize
	)			const `[virtual]`

Align and divide an interval

Parameters:

	maxNumSteps	Max. number of steps
	x1	First limit of the interval (In/Out)
	x2	Second limit of the interval (In/Out)
	stepSize	Step size (Out)

References align().

QwtValueList ReciprocalScaleEngine::buildMajorTicks	(	const QwtDoubleInterval &	interval,
		double	stepSize
	)			const `[private]`

Referenced by buildTicks().

void ReciprocalScaleEngine::buildMinorTicks	(	const QwtValueList &	majorTicks,
		int	maxMinMark,
		double	step,
		QwtValueList &	minorTicks,
		QwtValueList &	mediumTicks
	)			const `[private]`

Referenced by buildTicks().

void ReciprocalScaleEngine::buildTicks	(	const QwtDoubleInterval &	interval,
		double	stepSize,
		int	maxMinSteps,
		QwtValueList	ticks[QwtScaleDiv::NTickTypes]
	)			const `[private]`

Referenced by divideScale().

QwtScaleDiv ReciprocalScaleEngine::divideScale	(	double	x1,
		double	x2,
		int	maxMajSteps,
		int	maxMinSteps,
		double	stepSize = `0.0`
	)			const `[virtual]`

Calculate a scale division.

Parameters:

	x1	First interval limit
	x2	Second interval limit
	maxMajSteps	Maximum for the number of major steps
	maxMinSteps	Maximum number of minor steps
	stepSize	Step size. If stepSize == 0, the scaleEngine calculates one.

QwtScaleTransformation * ReciprocalScaleEngine::transformation ( ) const [virtual]

Return a dummy transformation

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