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juce::NormalisableRange< ValueType > Class Template Reference

#include <juce_NormalisableRange.h>

Public Types

using ValueRemapFunction

Public Member Functions

 NormalisableRange ()=default
 NormalisableRange (const NormalisableRange &)=default
NormalisableRangeoperator= (const NormalisableRange &)=default
 NormalisableRange (NormalisableRange &&)=default
NormalisableRangeoperator= (NormalisableRange &&)=default
 NormalisableRange (ValueType rangeStart, ValueType rangeEnd, ValueType intervalValue, ValueType skewFactor, bool useSymmetricSkew=false) noexcept
 NormalisableRange (ValueType rangeStart, ValueType rangeEnd) noexcept
 NormalisableRange (ValueType rangeStart, ValueType rangeEnd, ValueType intervalValue) noexcept
 NormalisableRange (Range< ValueType > range) noexcept
 NormalisableRange (Range< ValueType > range, ValueType intervalValue) noexcept
 NormalisableRange (ValueType rangeStart, ValueType rangeEnd, ValueRemapFunction convertFrom0To1Func, ValueRemapFunction convertTo0To1Func, ValueRemapFunction snapToLegalValueFunc={}) noexcept
ValueType convertTo0to1 (ValueType v) const noexcept
ValueType convertFrom0to1 (ValueType proportion) const noexcept
ValueType snapToLegalValue (ValueType v) const noexcept
Range< ValueType > getRange () const noexcept
void setSkewForCentre (ValueType centrePointValue) noexcept

Public Attributes

ValueType start = 0
ValueType end = 1
ValueType interval = 0
ValueType skew = 1
bool symmetricSkew = false

Private Member Functions

void checkInvariants () const

Static Private Member Functions

static ValueType clampTo0To1 (ValueType value)

Private Attributes

ValueRemapFunction convertFrom0To1Function
ValueRemapFunction convertTo0To1Function
ValueRemapFunction snapToLegalValueFunction

Detailed Description

template<typename ValueType>
class juce::NormalisableRange< ValueType >

Represents a mapping between an arbitrary range of values and a normalised 0->1 range.

The properties of the mapping also include an optional snapping interval and skew-factor.

See also
Range

@tags{Core}

Member Typedef Documentation

◆ ValueRemapFunction

template<typename ValueType>
using juce::NormalisableRange< ValueType >::ValueRemapFunction
Initial value:
std::function<ValueType(ValueType rangeStart,
ValueType rangeEnd,
ValueType valueToRemap)>

A function object which can remap a value in some way based on the start and end of a range.

Constructor & Destructor Documentation

◆ NormalisableRange() [1/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( )
default

Creates a continuous range that performs a dummy mapping.

◆ NormalisableRange() [2/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( const NormalisableRange< ValueType > & )
default

◆ NormalisableRange() [3/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( NormalisableRange< ValueType > && )
default

◆ NormalisableRange() [4/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( ValueType rangeStart,
ValueType rangeEnd,
ValueType intervalValue,
ValueType skewFactor,
bool useSymmetricSkew = false )
inlinenoexcept

Creates a NormalisableRange with a given range, interval and skew factor.

◆ NormalisableRange() [5/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( ValueType rangeStart,
ValueType rangeEnd )
inlinenoexcept

Creates a NormalisableRange with a given range, continuous interval, but a dummy skew-factor.

◆ NormalisableRange() [6/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( ValueType rangeStart,
ValueType rangeEnd,
ValueType intervalValue )
inlinenoexcept

Creates a NormalisableRange with a given range and interval, but a dummy skew-factor.

◆ NormalisableRange() [7/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( Range< ValueType > range)
inlinenoexcept

Creates a NormalisableRange with a given range, continuous interval, but a dummy skew-factor.

◆ NormalisableRange() [8/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( Range< ValueType > range,
ValueType intervalValue )
inlinenoexcept

Creates a NormalisableRange with a given range and interval, but a dummy skew-factor.

◆ NormalisableRange() [9/9]

template<typename ValueType>
juce::NormalisableRange< ValueType >::NormalisableRange ( ValueType rangeStart,
ValueType rangeEnd,
ValueRemapFunction convertFrom0To1Func,
ValueRemapFunction convertTo0To1Func,
ValueRemapFunction snapToLegalValueFunc = {} )
inlinenoexcept

Creates a NormalisableRange with a given range and an injective mapping function.

Parameters
rangeStartThe minimum value in the range.
rangeEndThe maximum value in the range.
convertFrom0To1FuncA function which uses the current start and end of this NormalisableRange and produces a mapped value from a normalised value.
convertTo0To1FuncA function which uses the current start and end of this NormalisableRange and produces a normalised value from a mapped value.
snapToLegalValueFuncA function which uses the current start and end of this NormalisableRange to take a mapped value and snap it to the nearest legal value.

Member Function Documentation

◆ checkInvariants()

template<typename ValueType>
void juce::NormalisableRange< ValueType >::checkInvariants ( ) const
inlineprivate

◆ clampTo0To1()

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::clampTo0To1 ( ValueType value)
inlinestaticprivate

◆ convertFrom0to1()

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::convertFrom0to1 ( ValueType proportion) const
inlinenoexcept

Uses the properties of this mapping to convert a normalised 0->1 value to its full-range representation.

◆ convertTo0to1()

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::convertTo0to1 ( ValueType v) const
inlinenoexcept

Uses the properties of this mapping to convert a non-normalised value to its 0->1 representation.

◆ getRange()

template<typename ValueType>
Range< ValueType > juce::NormalisableRange< ValueType >::getRange ( ) const
inlinenoexcept

Returns the extent of the normalisable range.

◆ operator=() [1/2]

template<typename ValueType>
NormalisableRange & juce::NormalisableRange< ValueType >::operator= ( const NormalisableRange< ValueType > & )
default

◆ operator=() [2/2]

template<typename ValueType>
NormalisableRange & juce::NormalisableRange< ValueType >::operator= ( NormalisableRange< ValueType > && )
default

◆ setSkewForCentre()

template<typename ValueType>
void juce::NormalisableRange< ValueType >::setSkewForCentre ( ValueType centrePointValue)
inlinenoexcept

Given a value which is between the start and end points, this sets the skew such that convertFrom0to1 (0.5) will return this value.

If you have used lambda functions for convertFrom0to1Func and convertFrom0to1Func in the constructor of this class then the skew value is ignored.

Parameters
centrePointValuethis must be greater than the start of the range and less than the end.

◆ snapToLegalValue()

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::snapToLegalValue ( ValueType v) const
inlinenoexcept

Takes a non-normalised value and snaps it based on either the interval property of this NormalisableRange or the lambda function supplied to the constructor.

Member Data Documentation

◆ convertFrom0To1Function

template<typename ValueType>
ValueRemapFunction juce::NormalisableRange< ValueType >::convertFrom0To1Function
private

◆ convertTo0To1Function

template<typename ValueType>
ValueRemapFunction juce::NormalisableRange< ValueType >::convertTo0To1Function
private

◆ end

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::end = 1

The maximum value of the non-normalised range.

◆ interval

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::interval = 0

The snapping interval that should be used (for a non-normalised value). Use 0 for a continuous range.

If you have used a lambda function for snapToLegalValueFunction in the constructor of this class then the interval is ignored.

◆ skew

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::skew = 1

An optional skew factor that alters the way values are distribute across the range.

The skew factor lets you skew the mapping logarithmically so that larger or smaller values are given a larger proportion of the available space.

A factor of 1.0 has no skewing effect at all. If the factor is < 1.0, the lower end of the range will fill more of the slider's length; if the factor is > 1.0, the upper end of the range will be expanded.

If you have used lambda functions for convertFrom0to1Func and convertFrom0to1Func in the constructor of this class then the skew value is ignored.

◆ snapToLegalValueFunction

template<typename ValueType>
ValueRemapFunction juce::NormalisableRange< ValueType >::snapToLegalValueFunction
private

◆ start

template<typename ValueType>
ValueType juce::NormalisableRange< ValueType >::start = 0

The minimum value of the non-normalised range.

◆ symmetricSkew

template<typename ValueType>
bool juce::NormalisableRange< ValueType >::symmetricSkew = false

If true, the skew factor applies from the middle of the slider to each of its ends.


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