qualpal::colors::DIN99d Class Reference

DIN99d color space representation. More...

#include <colors.h>

Public Member Functions
	DIN99d ()
	Default constructor initializes DIN99d to black (0,0,0)
	DIN99d (const double l, const double a, const double b)
	Construct DIN99d from component values.
	DIN99d (const RGB &rgb)
	Construct DIN99d from RGB color.
	DIN99d (const HSL &hsl)
	Construct DIN99d from HSL color.
	DIN99d (const Lab &lab)
	Construct DIN99d from Lab color.
	DIN99d (const XYZ &xyz, const std::array< double, 3 > &white_point={ 0.95047, 1, 1.08883 })
	Construct DIN99d from XYZ color.
bool	operator== (const DIN99d &other) const
	equality operator for DIN99d colors
bool	operator!= (const DIN99d &other) const
	inequality operator for DIN99d colors
double	l () const
	Get lightness component.
double	a () const
	Get green-red component.
double	b () const
	Get blue-yellow component.

Detailed Description

DIN99d color space representation.

DIN99d color space representation.

Perceptually uniform color space optimized for color difference calculations, especially for small differences. Used internally by qualpal for palette generation.

• l: Lightness [0, 100]
• a: Green-red axis [-128, 127]
• b: Blue-yellow axis [-128, 127]

Provides conversion constructors for RGB, HSL, Lab, and XYZ. Most conversions use the D65 reference white point by default.

See also

Lab, RGB, HSL, XYZ for conversions.

Definition at line 404 of file colors.h.

Constructor & Destructor Documentation

DIN99d() [1/5]

qualpal::colors::DIN99d::DIN99d	(	const double	l,
		const double	a,
		const double	b
	)

Construct DIN99d from component values.

Parameters

l	Lightness component
a	Green-red component
b	Blue-yellow component

DIN99d() [2/5]

qualpal::colors::DIN99d::DIN99d

(

const RGB &

rgb

)

Construct DIN99d from RGB color.

Parameters

rgb	RGB color to convert from

DIN99d() [3/5]

qualpal::colors::DIN99d::DIN99d

(

const HSL &

hsl

)

Construct DIN99d from HSL color.

Parameters

hsl	HSL color to convert from

DIN99d() [4/5]

qualpal::colors::DIN99d::DIN99d

(

const Lab &

lab

)

Construct DIN99d from Lab color.

Parameters

lab	Lab color to convert from

DIN99d() [5/5]

qualpal::colors::DIN99d::DIN99d	(	const XYZ &	xyz,
		const std::array< double, 3 > &	white_point = { 0.95047, 1, 1.08883 }
	)

Construct DIN99d from XYZ color.

Parameters

xyz	XYZ color to convert from
white_point	Reference white point (default: D65)

Member Function Documentation

a()

double qualpal::colors::DIN99d::a ( ) const

inline

Get green-red component.

Definition at line 472 of file colors.h.

b()

double qualpal::colors::DIN99d::b ( ) const

inline

Get blue-yellow component.

Definition at line 474 of file colors.h.

l()

double qualpal::colors::DIN99d::l ( ) const

inline

Get lightness component.

Definition at line 470 of file colors.h.

operator!=()

bool qualpal::colors::DIN99d::operator!= ( const DIN99d &  other ) const

inline

inequality operator for DIN99d colors

Parameters

other

Other DIN99d color to compare with

Returns

true if DIN99d colors are not equal, false otherwise

Definition at line 467 of file colors.h.

operator==()

bool qualpal::colors::DIN99d::operator== ( const DIN99d &  other ) const

inline

equality operator for DIN99d colors

Parameters

other

Other DIN99d color to compare with

Returns

true if both DIN99d colors are equal, false otherwise

Definition at line 456 of file colors.h.

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

• include/qualpal/colors.h