Rgba Struct Reference

Represents an RGBA color. More...

#include <rgba.h>

List of all members.

Public Member Functions
	Rgba ()
	Initialize all components to zero.
	Rgba (float c)
	Initialize all components to the given real number c.
	Rgba (float _r, float _g, float _b)
	Initialize the colors to the corresponding given values and the alpha to 1.
	Rgba (float _r, float _g, float _b, float _a)
	Initialize all components to the corresponding given values.
Rgba	operator+ (const Rgba &other) const
	Add the given RGBA other to this and return the result.
Rgba	operator- (const Rgba &other) const
	Subtract the given RGBA other from this and return the result.
Rgba	operator+ (float c) const
	Add the given real number c to every component of this and return the result.
Rgba &	operator+= (const Rgba &other)
	Add the given RGBA other to this and set this to the result.
Rgba	operator* (const Rgba &other) const
	Component-wisely multiply the given RGBA other to this and return the result.
Rgba	operator* (float c) const
	Multiply the given real number c with this and return the result.
Rgba &	operator*= (const Rgba &other)
	Component-wisely multiply the given RGB other to this and then set this to the result.
Rgba	operator/ (const Rgba &other) const
	Divide all the components of this with the corresponding components of other and return the result.
Rgba	operator/ (float c) const
	Divide all the components of this with the given real number c and return the result.
void	fill_array_4 (float *_a)
	Fill the given array with the values of the components of this.
bool	is_near (const Rgba &other, float threshold=EPSILON)
	Check whether all the components of this is within threshold of the corresponding components of other or not.
Public Attributes
float	r
	the intensity of the color red
float	g
	the intensity of the color green
float	b
	the intensity of the color blue
float	a
	the transparency.

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Detailed Description

Represents an RGBA color.

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Constructor & Destructor Documentation

Rgba::Rgba

(

)

[inline]

Initialize all components to zero.

Rgba::Rgba

(

float

c

)

[inline]

Initialize all components to the given real number c.

Rgba::Rgba	(	float	_r,
		float	_g,
		float	_b
	)			[inline]

Initialize the colors to the corresponding given values and the alpha to 1.

Rgba::Rgba	(	float	_r,
		float	_g,
		float	_b,
		float	_a
	)			[inline]

Initialize all components to the corresponding given values.

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Member Function Documentation

void Rgba::fill_array_4

(

float *

_a

)

[inline]

Fill the given array with the values of the components of this.

That is: a[0] is set to r. a[1] is set to g. a[2] is set to b. a[3] is set to a.

bool Rgba::is_near	(	const Rgba &	other,
		float	threshold = EPSILON
	)			[inline]

Check whether all the components of this is within threshold of the corresponding components of other or not.

Use this method to test approximate equality.

Rgba Rgba::operator*

(

float

c

)

const [inline]

Multiply the given real number c with this and return the result.

Rgba Rgba::operator*

(

const Rgba &

other

)

const [inline]

Component-wisely multiply the given RGBA other to this and return the result.

Rgba& Rgba::operator*=

(

const Rgba &

other

)

[inline]

Component-wisely multiply the given RGB other to this and then set this to the result.

Rgba Rgba::operator+

(

float

c

)

const [inline]

Add the given real number c to every component of this and return the result.

Rgba Rgba::operator+

(

const Rgba &

other

)

const [inline]

Add the given RGBA other to this and return the result.

Rgba& Rgba::operator+=

(

const Rgba &

other

)

[inline]

Add the given RGBA other to this and set this to the result.

Rgba Rgba::operator-

(

const Rgba &

other

)

const [inline]

Subtract the given RGBA other from this and return the result.

Rgba Rgba::operator/

(

float

c

)

const [inline]

Divide all the components of this with the given real number c and return the result.

Rgba Rgba::operator/

(

const Rgba &

other

)

const [inline]

Divide all the components of this with the corresponding components of other and return the result.

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Member Data Documentation

float Rgba::a

the transparency.

float Rgba::b

the intensity of the color blue

float Rgba::g

the intensity of the color green

float Rgba::r

the intensity of the color red

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

• include/cglib/rgba.h