Color with 4 floating point components: red, green, blue and alpha (r, g, b, a). More...

#include <kanzi/core/math/color_rgba.hpp>

Public Member Functions
	ColorRGBA ()
	Default constructor, initializes the color to (0.0, 0.0, 0.0, 0.0).

	ColorRGBA (float r, float g, float b)
	Constructor, initializes the color to (r, g, b, 1.0).

	ColorRGBA (float r, float g, float b, float a)
	Constructor, initializes the color to (r, g, b, a).

	ColorRGBA (float v)
	Constructor, initializes the color to (v, v, v, v).

float	getAlpha () const
	Returns the alpha element of the color.

float	getBlue () const
	Returns the blue element of the color.

float	getGreen () const
	Returns the green element of the color.

float	getRed () const
	Returns the red element of the color.

bool	hasNan () const
	Returns true if and only if at least one of the vector values is NaN.

ColorRGBA &	operator*= (float scalar)
	Multiplies each color element with a scalar.

ColorRGBA &	operator+= (const ColorRGBA &v)
	Modifies this color by adding another color.

ColorRGBA &	operator+= (float scalar)
	Adds a scalar to each color element.

ColorRGBA &	operator-= (const ColorRGBA &v)
	Modifies this color by subtracting another color from this color.

ColorRGBA &	operator/= (float scalar)
	Divides each color element with a scalar.

float &	operator[] (size_t index)
	Access to individual elements of the color.

const float &	operator[] (size_t index) const
	Access to individual elements of the color.

void	setAlpha (float value)
	Sets the alpha element of the color.

void	setBlue (float value)
	Sets the blue element of the color.

void	setGreen (float value)
	Sets the green element of the color.

void	setRed (float value)
	Sets the red element of the color.

Static Public Member Functions
static KZ_NO_DISCARD ColorRGBA	fromSRGB (float r, float g, float b)
	Returns a linear color with each element set from a sRGB value.

static KZ_NO_DISCARD ColorRGBA	fromSRGB (float r, float g, float b, float a)
	Returns a linear color with each element set from a sRGB value.

static ColorRGBA	highestValue ()
	Returns the color with each element having the most positive float value.

static ColorRGBA	lowestValue ()
	Returns the color with each element having the most negative float value.

static ColorRGBA	nan ()
	Returns the color with each element being NaN.

static ColorRGBA	negativeInfinity ()
	Returns the color with each element being the negative infinity.

static KZ_NO_DISCARD const ColorRGBA	one ()
	Returns the color with each element being one.

static ColorRGBA	opaqueBlack ()
	Returns opaque black color (0.0, 0.0, 0.0, 1.0).

static ColorRGBA	positiveInfinity ()
	Returns the color with each element being the positive infinity.

static ColorRGBA	transparentBlack ()
	Returns transparent black color (0.0, 0.0, 0.0, 0.0).

static KZ_NO_DISCARD const ColorRGBA	zero ()
	Returns the color with each element being zero.

Detailed Description

Color with 4 floating point components: red, green, blue and alpha (r, g, b, a).

Constructor & Destructor Documentation

◆ ColorRGBA() [1/4]

kanzi::ColorRGBA::ColorRGBA ( )

inlineexplicit

Default constructor, initializes the color to (0.0, 0.0, 0.0, 0.0).

◆ ColorRGBA() [2/4]

kanzi::ColorRGBA::ColorRGBA ( float v )

inlineexplicit

Constructor, initializes the color to (v, v, v, v).

Parameters

v	Red, Green, Blue, and Alpha component of the color.

◆ ColorRGBA() [3/4]

kanzi::ColorRGBA::ColorRGBA	(	float	r,
		float	g,
		float	b )

inlineexplicit

Constructor, initializes the color to (r, g, b, 1.0).

Parameters

r	Red component of the color.
g	Green component of the color.
b	Blue component of the color.

◆ ColorRGBA() [4/4]

kanzi::ColorRGBA::ColorRGBA	(	float	r,
		float	g,
		float	b,
		float	a )

inlineexplicit

Constructor, initializes the color to (r, g, b, a).

Parameters

r	Red component of the color.
g	Green component of the color.
b	Blue component of the color.
a	Alpha component of the color.

Member Function Documentation

◆ operator[]() [1/2]

const float & kanzi::ColorRGBA::operator[] ( size_t index ) const

inline

Access to individual elements of the color.

Parameters

index Index of the accessed element. Should be either 0, 1, 2, or 3.

Returns: If index is 0, r element. If index is 1, g element. If index is 2, b element. If index is 3, a element.

◆ operator[]() [2/2]

float & kanzi::ColorRGBA::operator[] ( size_t index )

inline

Access to individual elements of the color.

Parameters

index Index of the accessed element. Should be either 0, 1, 2, or 3.

Returns: If index is 0, r element. If index is 1, g element. If index is 2, b element. If index is 3, a element.

◆ operator*=()

ColorRGBA & kanzi::ColorRGBA::operator*= ( float scalar )

inline

Multiplies each color element with a scalar.

Parameters

scalar Multiplier for each color element.

Returns: This color.

◆ operator/=()

ColorRGBA & kanzi::ColorRGBA::operator/= ( float scalar )

inline

Divides each color element with a scalar.

Parameters

scalar Divider for each color element.

Returns: This color.

◆ operator+=() [1/2]

ColorRGBA & kanzi::ColorRGBA::operator+= ( float scalar )

inline

Adds a scalar to each color element.

Parameters

scalar Another color.

Returns: This color.

◆ operator+=() [2/2]

ColorRGBA & kanzi::ColorRGBA::operator+= ( const ColorRGBA & v )

inline

Modifies this color by adding another color.

Parameters

v	Another color.

Returns: This color.

◆ operator-=()

ColorRGBA & kanzi::ColorRGBA::operator-= ( const ColorRGBA & v )

inline

Modifies this color by subtracting another color from this color.

Parameters

v	Another color.

Returns: This color.

◆ zero()

static KZ_NO_DISCARD const ColorRGBA kanzi::ColorRGBA::zero ( )

inlinestatic

Returns the color with each element being zero.

Returns: Color with zeroed elements.

◆ one()

static KZ_NO_DISCARD const ColorRGBA kanzi::ColorRGBA::one ( )

inlinestatic

Returns the color with each element being one.

Returns: Color with unit element values.

◆ fromSRGB() [1/2]

static KZ_NO_DISCARD ColorRGBA kanzi::ColorRGBA::fromSRGB	(	float	r,
		float	g,
		float	b,
		float	a )

inlinestatic

Returns a linear color with each element set from a sRGB value.

Parameters

r	Red Channel (0-1.0)
g	Green Channel (0-1.0)
b	Blue Channel (0-1.0)
a	Alpha Channel (0-1.0)

Returns: Color in linear color space.

◆ fromSRGB() [2/2]

static KZ_NO_DISCARD ColorRGBA kanzi::ColorRGBA::fromSRGB	(	float	r,
		float	g,
		float	b )

inlinestatic

Returns a linear color with each element set from a sRGB value.

Parameters

r	Red Channel (0-1.0)
g	Green Channel (0-1.0)
b	Blue Channel (0-1.0)

Returns: Color in linear color space.

◆ getRed()

float kanzi::ColorRGBA::getRed ( ) const

inline

Returns the red element of the color.

Returns: The red element.

◆ getGreen()

float kanzi::ColorRGBA::getGreen ( ) const

inline

Returns the green element of the color.

Returns: The green element.

◆ getBlue()

float kanzi::ColorRGBA::getBlue ( ) const

inline

Returns the blue element of the color.

Returns: The blue element.

◆ getAlpha()

float kanzi::ColorRGBA::getAlpha ( ) const

inline

Returns the alpha element of the color.

Returns: The alpha element.

◆ setRed()

void kanzi::ColorRGBA::setRed ( float value )

inline

Sets the red element of the color.

Parameters

value The new value of the red element.

◆ setGreen()

void kanzi::ColorRGBA::setGreen ( float value )

inline

Sets the green element of the color.

Parameters

value The new value of the green element.

◆ setBlue()

void kanzi::ColorRGBA::setBlue ( float value )

inline

Sets the blue element of the color.

Parameters

value The new value of the blue element.

◆ setAlpha()

void kanzi::ColorRGBA::setAlpha ( float value )

inline

Sets the alpha element of the color.

Parameters

value The new value of the alpha element.

◆ lowestValue()

ColorRGBA kanzi::ColorRGBA::lowestValue ( )

inlinestatic

Returns the color with each element having the most negative float value.

Returns: Color with the lowest possible value.

◆ highestValue()

ColorRGBA kanzi::ColorRGBA::highestValue ( )

inlinestatic

Returns the color with each element having the most positive float value.

Returns: Color with the highest possible value.

◆ nan()

ColorRGBA kanzi::ColorRGBA::nan ( )

inlinestatic

Returns the color with each element being NaN.

Returns: Color with NaN elements.

◆ hasNan()

bool kanzi::ColorRGBA::hasNan ( ) const

inline

Returns true if and only if at least one of the vector values is NaN.

◆ positiveInfinity()

ColorRGBA kanzi::ColorRGBA::positiveInfinity ( )

inlinestatic

Returns the color with each element being the positive infinity.

Returns: Color with positive infinity elements.

◆ negativeInfinity()

ColorRGBA kanzi::ColorRGBA::negativeInfinity ( )

inlinestatic

Returns the color with each element being the negative infinity.

Returns: Color with negative infinity elements.

◆ opaqueBlack()

ColorRGBA kanzi::ColorRGBA::opaqueBlack ( )

inlinestatic

Returns opaque black color (0.0, 0.0, 0.0, 1.0).

Returns: Opaque black.

◆ transparentBlack()

ColorRGBA kanzi::ColorRGBA::transparentBlack ( )

inlinestatic

Returns transparent black color (0.0, 0.0, 0.0, 0.0).

Returns: Transparent black color.

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

kanzi/core/math/color_rgba.hpp

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ ColorRGBA() [1/4]

◆ ColorRGBA() [2/4]

◆ ColorRGBA() [3/4]

◆ ColorRGBA() [4/4]

Member Function Documentation

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ operator*=()

◆ operator/=()

◆ operator+=() [1/2]

◆ operator+=() [2/2]

◆ operator-=()

◆ zero()

◆ one()

◆ fromSRGB() [1/2]

◆ fromSRGB() [2/2]

◆ getRed()

◆ getGreen()

◆ getBlue()

◆ getAlpha()

◆ setRed()

◆ setGreen()

◆ setBlue()

◆ setAlpha()

◆ lowestValue()

◆ highestValue()

◆ nan()

◆ hasNan()

◆ positiveInfinity()

◆ negativeInfinity()

◆ opaqueBlack()

◆ transparentBlack()