#include <LnScaleEngine.h>

Inheritance diagram for LnScaleEngine:

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. More...

virtual QwtScaleTransformation *	transformation () const

Protected Member Functions
QwtDoubleInterval	ln (const QwtDoubleInterval &) const

Private Member Functions
QwtDoubleInterval	align (const QwtDoubleInterval &, double stepSize) const
	Align an interval to a step size. More...

QwtValueList	buildMajorTicks (const QwtDoubleInterval &interval, double stepSize) const

QwtValueList	buildMinorTicks (const QwtValueList &majorTicks, int maxMinMark, double step) const

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

Member Function Documentation

QwtDoubleInterval LnScaleEngine::align	(	const QwtDoubleInterval &	interval,
		double	stepSize
	)		const

private

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

Returns: Aligned interval

References ln().

Referenced by autoScale(), and buildTicks().

void LnScaleEngine::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(), and ln().

QwtValueList LnScaleEngine::buildMajorTicks	(	const QwtDoubleInterval &	interval,
		double	stepSize
	)		const

private

References ln().

Referenced by buildTicks().

QwtValueList LnScaleEngine::buildMinorTicks	(	const QwtValueList &	majorTicks,
		int	maxMinMark,
		double	step
	)		const

private

Referenced by buildTicks().

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

private

References align(), buildMajorTicks(), and buildMinorTicks().

Referenced by divideScale().

QwtScaleDiv LnScaleEngine::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.

References buildTicks(), and ln().

QwtDoubleInterval LnScaleEngine::ln ( const QwtDoubleInterval & interval ) const

protected

Return the interval [log(interval.minValue(), log(interval.maxValue]

Referenced by align(), autoScale(), buildMajorTicks(), and divideScale().

QwtScaleTransformation * LnScaleEngine::transformation ( ) const

virtual

Return a dummy transformation

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

qtiplot/src/plot2D/LnScaleEngine.h
qtiplot/src/plot2D/LnScaleEngine.cpp

Public Member Functions

Protected Member Functions

Private Member Functions

Member Function Documentation