QgsContrastEnhancementFunction Class Reference

A contrast enhancement function is the base class for all raster contrast enhancements. More...

#include <qgscontrastenhancementfunction.h>

Inheritance diagram for QgsContrastEnhancementFunction:

Public Member Functions
	QgsContrastEnhancementFunction (const QgsContrastEnhancementFunction &f)
	QgsContrastEnhancementFunction (Qgis::DataType, double, double)
virtual	~QgsContrastEnhancementFunction ()=default
virtual int	enhance (double value)
	A customizable method that takes in a double value and returns a int between 0 and 255. More...
virtual bool	isValueInDisplayableRange (double value)
	A customizable method to indicate if a pixel's value is within the displayable range. More...
double	maximumValue () const
	Returns the maximum value. More...
double	minimumValue () const
	Returns the minimum value. More...
QgsContrastEnhancementFunction &	operator= (const QgsContrastEnhancementFunction &)=delete
void	setMaximumValue (double value)
	Sets the maximum value. More...
void	setMinimumValue (double value)
	Sets the minimum value. More...

Protected Attributes
double	mMaximumValue
	User defineable maximum value for the band, used for enhanceContrasting. More...
double	mMaximumValuePossible = std::numeric_limits< double >::max()
double	mMinimumMaximumRange
	Minimum maximum range for the band, used for enhanceContrasting. More...
double	mMinimumValue
	User defineable minimum value for the band, used for enhanceContrasting. More...
double	mMinimumValuePossible = std::numeric_limits< double >::lowest()
Qgis::DataType	mQgsRasterDataType
	Data type of the band. More...

Detailed Description

A contrast enhancement function is the base class for all raster contrast enhancements.

The purpose of a contrast enhancement is to enhanceContrast or clip a pixel value into a specified bounding range.

Definition at line 32 of file qgscontrastenhancementfunction.h.

Constructor & Destructor Documentation

QgsContrastEnhancementFunction() [1/2]

QgsContrastEnhancementFunction::QgsContrastEnhancementFunction	(	Qgis::DataType	dataType,
		double	minimumValue,
		double	maximumValue
	)

Definition at line 22 of file qgscontrastenhancementfunction.cpp.

QgsContrastEnhancementFunction() [2/2]

QgsContrastEnhancementFunction::QgsContrastEnhancementFunction

(

const QgsContrastEnhancementFunction &

f

)

Definition at line 32 of file qgscontrastenhancementfunction.cpp.

~QgsContrastEnhancementFunction()

virtual QgsContrastEnhancementFunction::~QgsContrastEnhancementFunction ( )

virtualdefault

Member Function Documentation

enhance()

int QgsContrastEnhancementFunction::enhance ( double  value )

virtual

A customizable method that takes in a double value and returns a int between 0 and 255.

Reimplemented in QgsLinearMinMaxEnhancementWithClip, QgsLinearMinMaxEnhancement, and QgsClipToMinMaxEnhancement.

Definition at line 42 of file qgscontrastenhancementfunction.cpp.

isValueInDisplayableRange()

bool QgsContrastEnhancementFunction::isValueInDisplayableRange ( double  value )

virtual

A customizable method to indicate if a pixel's value is within the displayable range.

Reimplemented in QgsLinearMinMaxEnhancementWithClip, and QgsClipToMinMaxEnhancement.

Definition at line 54 of file qgscontrastenhancementfunction.cpp.

maximumValue()

double QgsContrastEnhancementFunction::maximumValue ( ) const

inline

Returns the maximum value.

See also

setMaximumValue()

minimumValue()

Since

QGIS 3.2

Definition at line 71 of file qgscontrastenhancementfunction.h.

minimumValue()

double QgsContrastEnhancementFunction::minimumValue ( ) const

inline

Returns the minimum value.

See also

setMinimumValue()

maximumValue()

Since

QGIS 3.2

Definition at line 79 of file qgscontrastenhancementfunction.h.

operator=()

QgsContrastEnhancementFunction& QgsContrastEnhancementFunction::operator= ( const QgsContrastEnhancementFunction &  )

delete

setMaximumValue()

void QgsContrastEnhancementFunction::setMaximumValue

(

double

value

)

Sets the maximum value.

See also

maximumValue()

setMinimumValue()

Definition at line 61 of file qgscontrastenhancementfunction.cpp.

setMinimumValue()

void QgsContrastEnhancementFunction::setMinimumValue

(

double

value

)

Sets the minimum value.

See also

minimumValue()

setMaximumValue()

Definition at line 75 of file qgscontrastenhancementfunction.cpp.

Member Data Documentation

mMaximumValue

double QgsContrastEnhancementFunction::mMaximumValue

protected

User defineable maximum value for the band, used for enhanceContrasting.

Definition at line 83 of file qgscontrastenhancementfunction.h.

mMaximumValuePossible

double QgsContrastEnhancementFunction::mMaximumValuePossible = std::numeric_limits< double >::max()

protected

Definition at line 94 of file qgscontrastenhancementfunction.h.

mMinimumMaximumRange

double QgsContrastEnhancementFunction::mMinimumMaximumRange

protected

Minimum maximum range for the band, used for enhanceContrasting.

Definition at line 89 of file qgscontrastenhancementfunction.h.

mMinimumValue

double QgsContrastEnhancementFunction::mMinimumValue

protected

User defineable minimum value for the band, used for enhanceContrasting.

Definition at line 86 of file qgscontrastenhancementfunction.h.

mMinimumValuePossible

double QgsContrastEnhancementFunction::mMinimumValuePossible = std::numeric_limits< double >::lowest()

protected

Definition at line 95 of file qgscontrastenhancementfunction.h.

mQgsRasterDataType

Qgis::DataType QgsContrastEnhancementFunction::mQgsRasterDataType

protected

Data type of the band.

Definition at line 92 of file qgscontrastenhancementfunction.h.

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

• /build/qgis-3.16.0+99unstable/src/core/raster/qgscontrastenhancementfunction.h
• /build/qgis-3.16.0+99unstable/src/core/raster/qgscontrastenhancementfunction.cpp