#include <RangeMapper.h>

Inheritance diagram for LogRangeMapper:

Collaboration diagram for LogRangeMapper:

Public Member Functions
	LogRangeMapper (int minpos, int maxpos, double minval, double maxval, QString m_unit="", bool inverted=false)
	Map values in range minval->maxval into integer range minpos->maxpos such that logs of the values are mapped linearly. More...

int	getPositionForValue (double value) const override
	Return the position that maps to the given value, rounding to the nearest position and clamping to the minimum and maximum extents of the mapper's positional range. More...

int	getPositionForValueUnclamped (double value) const override
	Return the position that maps to the given value, rounding to the nearest position, without clamping. More...

double	getValueForPosition (int position) const override
	Return the value mapped from the given position, clamping to the minimum and maximum extents of the mapper's value range. More...

double	getValueForPositionUnclamped (int position) const override
	Return the value mapped from the given position, without clamping. More...

QString	getUnit () const override
	Get the unit of the mapper's value range. More...

virtual QString	getLabel (int) const
	The mapper may optionally provide special labels for one or more individual positions (such as the minimum position, the default, or indeed all positions). More...

Static Public Member Functions
static void	convertRatioMinLog (double ratio, double minlog, int minpos, int maxpos, double &minval, double &maxval)

static void	convertMinMax (int minpos, int maxpos, double minval, double maxval, double &minlog, double &ratio)

Protected Attributes
int	m_minpos

int	m_maxpos

double	m_ratio

double	m_minlog

double	m_maxlog

QString	m_unit

bool	m_inverted

Detailed Description

Definition at line 111 of file RangeMapper.h.

Constructor & Destructor Documentation

LogRangeMapper::LogRangeMapper	(	int	minpos,
		int	maxpos,
		double	minval,
		double	maxval,
		QString	m_unit = `""`,
		bool	inverted = `false`
	)

Map values in range minval->maxval into integer range minpos->maxpos such that logs of the values are mapped linearly.

minval must be greater than zero, and minval and minpos must be less than maxval and maxpos respectively. If inverted is true, the range will be mapped "backwards" (minval to maxpos and maxval to minpos).

Definition at line 94 of file RangeMapper.cpp.

References convertMinMax(), m_maxlog, m_maxpos, m_minlog, m_minpos, and m_ratio.

Member Function Documentation

void LogRangeMapper::convertRatioMinLog	(	double	ratio,
		double	minlog,
		int	minpos,
		int	maxpos,
		double &	minval,
		double &	maxval
	)

static

Definition at line 130 of file RangeMapper.cpp.

void LogRangeMapper::convertMinMax	(	int	minpos,
		int	maxpos,
		double	minval,
		double	maxval,
		double &	minlog,
		double &	ratio
	)

static

Definition at line 119 of file RangeMapper.cpp.

Referenced by LogRangeMapper().

int LogRangeMapper::getPositionForValue ( double value ) const

overridevirtual

Return the position that maps to the given value, rounding to the nearest position and clamping to the minimum and maximum extents of the mapper's positional range.

Implements RangeMapper.

Definition at line 139 of file RangeMapper.cpp.

References getPositionForValueUnclamped(), m_maxpos, and m_minpos.

Referenced by AutoRangeMapper::chooseMappingTypeFor().

int LogRangeMapper::getPositionForValueUnclamped ( double value ) const

overridevirtual

Return the position that maps to the given value, rounding to the nearest position, without clamping.

That is, whatever mapping function is in use will be projected even outside the minimum and maximum extents of the mapper's positional range. (The mapping outside that range is not guaranteed to be exact, except if the mapper is a linear one.)

Implements RangeMapper.

Definition at line 148 of file RangeMapper.cpp.

References m_inverted, m_maxpos, m_minlog, m_minpos, and m_ratio.

Referenced by getPositionForValue().

double LogRangeMapper::getValueForPosition ( int position ) const

overridevirtual

Return the value mapped from the given position, clamping to the minimum and maximum extents of the mapper's value range.

Implements RangeMapper.

Definition at line 158 of file RangeMapper.cpp.

References getValueForPositionUnclamped(), m_maxpos, and m_minpos.

double LogRangeMapper::getValueForPositionUnclamped ( int position ) const

overridevirtual

Return the value mapped from the given position, without clamping.

That is, whatever mapping function is in use will be projected even outside the minimum and maximum extents of the mapper's value range. (The mapping outside that range is not guaranteed to be exact, except if the mapper is a linear one.)

Implements RangeMapper.

Definition at line 167 of file RangeMapper.cpp.

References m_inverted, m_maxpos, m_minlog, m_minpos, and m_ratio.

Referenced by getValueForPosition().

QString LogRangeMapper::getUnit ( ) const

inlineoverridevirtual

Get the unit of the mapper's value range.

Reimplemented from RangeMapper.

Definition at line 140 of file RangeMapper.h.

virtual QString RangeMapper::getLabel ( int ) const

inlinevirtualinherited

The mapper may optionally provide special labels for one or more individual positions (such as the minimum position, the default, or indeed all positions).

These should be used in any display context in preference to just showing the numerical value for the position. If a position has such a label, return it here.

Reimplemented in LinearRangeMapper.

Definition at line 74 of file RangeMapper.h.

Referenced by LinearRangeMapper::getUnit().