#include <genesis/utils/color/norm_diverging.hpp>

Detailed Description

Color normalization for a diverging scale.

The min() and max() values determine the boundaries of the range of allowed values; they map to the first and last entry of the palette, respectively. The mid() value is used as the "neutral" value in the range of allowed values, that is, it maps to the central color of the palette.

In other words, values in [ min, mid ] are mapped to the first half of the palette, and values in [ mid, max ] to the second half:

     palette
   |----|----|
  /      \    \
 /        \    \
 |---------|---|
min      mid  max

Values outside of the allowed range [ min, max ], as well as non-finite values, are treated according to the settings clip_under(), clip_over(), mask_value(), mask_color(), under_color(), over_color().

Definition at line 71 of file norm_diverging.hpp.

Public Member Functions
	ColorNormalizationDiverging ()
	Constructor that sets `min == -1.0`, `mid = 0.0` and `max == 1.0`. More...

	ColorNormalizationDiverging (ColorNormalizationDiverging &&)=default

	ColorNormalizationDiverging (ColorNormalizationDiverging const &)=default

	ColorNormalizationDiverging (double min, double max)
	Constructor that sets min() and max() to the provided values, and mid() to their midpoint. More...

	ColorNormalizationDiverging (double min, double mid, double max)
	Constructor that sets min(), mid() and max() to the provided values, in that order. More...

template<class ForwardIterator >
	ColorNormalizationDiverging (ForwardIterator first, ForwardIterator last)
	Constructor that sets min() and max() to the min and max of the provided range, and mid() to their midpoint. More...

	ColorNormalizationDiverging (std::vector< double > const &values)
	Constructor that sets min() and max() to the min and max of the provided `values`, and mid() to their midpoint. More...

virtual	~ColorNormalizationDiverging () override=default

ColorNormalizationDiverging &	make_centric (double center=0.0)
	Make the range symmetric around a center value. More...

double	mid_value () const
	Mid-point value, that is, where the middle value of a diverging_color() is. More...

ColorNormalizationDiverging &	mid_value (double value)
	Mid-point value, that is, where the middle value of a diverging_color() is. More...

ColorNormalizationDiverging &	operator= (ColorNormalizationDiverging &&)=default

ColorNormalizationDiverging &	operator= (ColorNormalizationDiverging const &)=default

Public Member Functions inherited from ColorNormalizationLinear
	ColorNormalizationLinear ()=default
	Constructor that sets `min == 0.0` and `max == 1.0`. More...

	ColorNormalizationLinear (ColorNormalizationLinear &&)=default

	ColorNormalizationLinear (ColorNormalizationLinear const &)=default

	ColorNormalizationLinear (double min, double max)
	Constructor that sets min() and max() to the provided values. More...

template<class ForwardIterator >
	ColorNormalizationLinear (ForwardIterator first, ForwardIterator last)
	Constructor that sets min() and max() to the min and max of the provided range. More...

	ColorNormalizationLinear (std::vector< double > const &values)
	Constructor that sets min() and max() to the min and max of the provided `values`. More...

virtual	~ColorNormalizationLinear () override=default

template<class ForwardIterator >
ColorNormalizationLinear &	autoscale (ForwardIterator first, ForwardIterator last)
	Set the min and max of the Palette so that they reflect the min and max valid values that are found in the range `[ first, last )`. More...

ColorNormalizationLinear &	autoscale (std::vector< double > const &values)

template<class ForwardIterator >
ColorNormalizationLinear &	autoscale_max (ForwardIterator first, ForwardIterator last)
	Same as autoscale(), but only updates the max_value(). More...

ColorNormalizationLinear &	autoscale_max (std::vector< double > const &values)

template<class ForwardIterator >
ColorNormalizationLinear &	autoscale_min (ForwardIterator first, ForwardIterator last)
	Same as autoscale(), but only updates the min_value(). More...

ColorNormalizationLinear &	autoscale_min (std::vector< double > const &values)

double	max_value () const
	Minimum value, that is, where to end the color scale. More...

ColorNormalizationLinear &	max_value (double value)
	Minimum value, that is, where to end the color scale. More...

double	min_value () const
	Minimum value, that is, where to begin the color scale. More...

ColorNormalizationLinear &	min_value (double value)
	Minimum value, that is, where to begin the color scale. More...

ColorNormalizationLinear &	operator= (ColorNormalizationLinear &&)=default

ColorNormalizationLinear &	operator= (ColorNormalizationLinear const &)=default

ColorNormalizationLinear &	scale (double min, double max)

Public Member Functions inherited from ColorNormalization
	ColorNormalization ()=default

	ColorNormalization (ColorNormalization &&)=default

	ColorNormalization (ColorNormalization const &)=default

virtual	~ColorNormalization ()=default

bool	is_valid () const
	Return whether ranges and other values are correct. More...

double	mask_value () const
	Mask value that identifies invalid values. More...

ColorNormalization &	mask_value (double value)
	Mask value that identifies invalid values. More...

double	operator() (double value) const
	Normalize a `value` into range `[ 0.0, 1.0 ]`. More...

template<class ForwardIterator >
std::vector< double >	operator() (ForwardIterator first, ForwardIterator last) const
	Return the normalized values for a range of values. More...

std::vector< double >	operator() (std::vector< double > const &values) const
	Return the normalized values for a vector of `values`. More...

ColorNormalization &	operator= (ColorNormalization &&)=default

ColorNormalization &	operator= (ColorNormalization const &)=default

Protected Member Functions
virtual bool	is_valid_ () const override
	Return whether the ranges are correct. More...

virtual void	is_valid_or_throw_ () const override
	Throw if the ranges are incorrect. More...

virtual double	normalize_ (double value) const override
	Normalization function. More...

virtual void	update_hook_ (double min, double max) override
	Called whenever the min and max are set automatically. Gives derived classes a chance to update their values. More...

Protected Member Functions inherited from ColorNormalizationLinear
template<class ForwardIterator >
ColorNormalizationLinear &	autoscale_ (ForwardIterator first, ForwardIterator last, bool set_min, bool set_max)

Constructor & Destructor Documentation

◆ ColorNormalizationDiverging() [1/7]

ColorNormalizationDiverging ( )

inline

Constructor that sets min == -1.0, mid = 0.0 and max == 1.0.

Definition at line 83 of file norm_diverging.hpp.

◆ ColorNormalizationDiverging() [2/7]

ColorNormalizationDiverging	(	double	min,
		double	max
	)

inline

Constructor that sets min() and max() to the provided values, and mid() to their midpoint.

Definition at line 92 of file norm_diverging.hpp.

◆ ColorNormalizationDiverging() [3/7]

ColorNormalizationDiverging	(	double	min,
		double	mid,
		double	max
	)

inline

Constructor that sets min(), mid() and max() to the provided values, in that order.

Definition at line 99 of file norm_diverging.hpp.

◆ ColorNormalizationDiverging() [4/7]

ColorNormalizationDiverging ( std::vector< double > const & values )

inlineexplicit

Constructor that sets min() and max() to the min and max of the provided values, and mid() to their midpoint.

Definition at line 110 of file norm_diverging.hpp.

◆ ColorNormalizationDiverging() [5/7]

ColorNormalizationDiverging	(	ForwardIterator	first,
		ForwardIterator	last
	)

inline

Constructor that sets min() and max() to the min and max of the provided range, and mid() to their midpoint.

Definition at line 120 of file norm_diverging.hpp.

◆ ~ColorNormalizationDiverging()

virtual ~ColorNormalizationDiverging ( )

overridevirtualdefault

◆ ColorNormalizationDiverging() [6/7]

ColorNormalizationDiverging ( ColorNormalizationDiverging const & )

default

◆ ColorNormalizationDiverging() [7/7]

ColorNormalizationDiverging ( ColorNormalizationDiverging && )

default

Member Function Documentation

◆ is_valid_()

virtual bool is_valid_ ( ) const

inlineoverrideprotectedvirtual

Return whether the ranges are correct.

Reimplemented from ColorNormalizationLinear.

Definition at line 187 of file norm_diverging.hpp.

◆ is_valid_or_throw_()

virtual void is_valid_or_throw_ ( ) const

inlineoverrideprotectedvirtual

Throw if the ranges are incorrect.

Reimplemented from ColorNormalizationLinear.

Definition at line 195 of file norm_diverging.hpp.

◆ make_centric()

ColorNormalizationDiverging& make_centric ( double center = 0.0 )

inline

Make the range symmetric around a center value.

For example, if autoscale() yielded min == -0.89 and max == 0.95, then calling this function with center == 0.0 sets min == -0.95 and mid == 0.0;

Definition at line 155 of file norm_diverging.hpp.

◆ mid_value() [1/2]

double mid_value ( ) const

inline

Mid-point value, that is, where the middle value of a diverging_color() is.

Definition at line 140 of file norm_diverging.hpp.

◆ mid_value() [2/2]

ColorNormalizationDiverging& mid_value ( double value )

inline

Mid-point value, that is, where the middle value of a diverging_color() is.

Definition at line 172 of file norm_diverging.hpp.

◆ normalize_()

virtual double normalize_ ( double value ) const

inlineoverrideprotectedvirtual

Normalization function.

Return a value in range [ 0.0, 1.0 ]. Derived classes can override this to provide their specific normalization.

Reimplemented from ColorNormalizationLinear.

Definition at line 208 of file norm_diverging.hpp.

◆ operator=() [1/2]

ColorNormalizationDiverging& operator= ( ColorNormalizationDiverging && )

default

◆ operator=() [2/2]

ColorNormalizationDiverging& operator= ( ColorNormalizationDiverging const & )

default

◆ update_hook_()

virtual void update_hook_	(	double	min,
		double	max
	)

inlineoverrideprotectedvirtual

Called whenever the min and max are set automatically. Gives derived classes a chance to update their values.

Reimplemented from ColorNormalizationLinear.

Definition at line 227 of file norm_diverging.hpp.

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

norm_diverging.hpp

Detailed Description

Public Member Functions

Protected Member Functions

Constructor & Destructor Documentation

◆ ColorNormalizationDiverging() [1/7]

◆ ColorNormalizationDiverging() [2/7]

◆ ColorNormalizationDiverging() [3/7]

◆ ColorNormalizationDiverging() [4/7]

◆ ColorNormalizationDiverging() [5/7]

◆ ~ColorNormalizationDiverging()

◆ ColorNormalizationDiverging() [6/7]

◆ ColorNormalizationDiverging() [7/7]

Member Function Documentation

◆ is_valid_()

◆ is_valid_or_throw_()

◆ make_centric()

◆ mid_value() [1/2]

◆ mid_value() [2/2]

◆ normalize_()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ update_hook_()