vpRGBa Class Reference

#include <vpRGBa.h>

Inheritance diagram for vpRGBa:

Public Member Functions
	vpRGBa ()
	vpRGBa (const unsigned char &r, const unsigned char &g, const unsigned char &b, const unsigned char &a=0)
	vpRGBa (const unsigned char &v)
	vpRGBa (const vpRGBa &v)
	vpRGBa (const vpColVector &v)
vpRGBa &	operator= (const unsigned char &v)
vpRGBa &	operator= (const vpRGBa &v)
vpRGBa &	operator= (const vpColVector &v)
bool	operator== (const vpRGBa &v)
bool	operator!= (const vpRGBa &v)
vpColVector	operator- (const vpRGBa &v) const
vpRGBa	operator+ (const vpRGBa &v) const
vpColVector	operator- (const vpColVector &v) const
vpColVector	operator+ (const vpColVector &v) const
vpColVector	operator* (const float &v) const
vpColVector	operator* (const double &v) const
bool	operator< (const vpRGBa &v) const
bool	operator> (const vpRGBa &v) const

Public Attributes
unsigned char	R
unsigned char	G
unsigned char	B
unsigned char	A

Friends
VISP_EXPORT vpRGBa	operator* (const double &x, const vpRGBa &rgb)

Detailed Description

Class that defines a RGB 32 bits structure.

Define the object vpRGBa that is used to build color images (it define a RGB 32 bits structure, fourth byte is not used)

See also

vpImage

Examples:

servoMomentImage.cpp, and tutorial-image-manipulation.cpp.

Definition at line 68 of file vpRGBa.h.

Constructor & Destructor Documentation

vpRGBa::vpRGBa ( )

inline

Basic constructor.

Build a black value.

Definition at line 77 of file vpRGBa.h.

vpRGBa::vpRGBa ( const unsigned char &  r, const unsigned char &  g, const unsigned char &  b, const unsigned char &  a = 0  )

inline

Constructor.

Initialize the color with R, G, B, A values.

Parameters

r	: Red value.
g	: Green value.
b	: Blue value.
a	: Additional value.

Definition at line 90 of file vpRGBa.h.

vpRGBa::vpRGBa ( const unsigned char &  v )

inline

Constructor.

Initialize all the R, G, B, A components to v.

Parameters

v	: Value to set.

Definition at line 103 of file vpRGBa.h.

vpRGBa::vpRGBa ( const vpRGBa &  v )

inline

Copy constructor.

Definition at line 109 of file vpRGBa.h.

vpRGBa::vpRGBa ( const vpColVector &  v )

inline

Create a RGBa value from a 4 dimension column vector.

R=v[0] G=v[1] B=v[2] A=v[3]

Definition at line 120 of file vpRGBa.h.

Member Function Documentation

bool vpRGBa::operator!=

(

const vpRGBa &

v

)

Compare two color pixels.

Returns

true if the images are different, false if they are the same.

Definition at line 130 of file vpRGBa.cpp.

References A, B, G, and R.

vpColVector vpRGBa::operator*

(

const float &

v

)

const

Multiplication operator : v * "this".

Parameters

v	: Value to multiply.

Returns

v * "this"

Definition at line 215 of file vpRGBa.cpp.

References A, B, G, and R.

vpColVector vpRGBa::operator*

(

const double &

v

)

const

Multiplication operator : v * "this".

Parameters

v	: Value to multiply.

Returns

v * "this"

Definition at line 231 of file vpRGBa.cpp.

References A, B, G, and R.

vpRGBa vpRGBa::operator+

(

const vpRGBa &

v

)

const

Addition operator : "this" + v.

Parameters

v	: Color to add to the current object "this".

Returns

"this" + v

Warning

in case of overflow : e.g. 128+128 returns 0 for all 4 channels

Definition at line 167 of file vpRGBa.cpp.

References A, B, G, and R.

vpColVector vpRGBa::operator+

(

const vpColVector &

v

)

const

Addition operator : "this" + v.

Parameters

v	: Color to add to the current object "this".

Returns

"this" + v

Definition at line 199 of file vpRGBa.cpp.

References A, B, G, and R.

vpColVector vpRGBa::operator-

(

const vpRGBa &

v

)

const

Substraction operator : "this" - v.

Parameters

v	: Color to substract to the current object "this".

Returns

"this" - v

Definition at line 150 of file vpRGBa.cpp.

References A, B, G, and R.

vpColVector vpRGBa::operator-

(

const vpColVector &

v

)

const

Substraction operator : "this" - v.

Parameters

v	: Color to substract to the current object "this".

Returns

"this" - v

Definition at line 183 of file vpRGBa.cpp.

References A, B, G, and R.

bool vpRGBa::operator<

(

const vpRGBa &

v

)

const

Definition at line 242 of file vpRGBa.cpp.

References B, G, and R.

vpRGBa & vpRGBa::operator=

(

const unsigned char &

v

)

Copy operator (from an unsigned char value)

Parameters

v	: Input color ( R = G = B = v )

Definition at line 62 of file vpRGBa.cpp.

References A, B, G, and R.

vpRGBa & vpRGBa::operator=

(

const vpRGBa &

v

)

Copy operator.

Definition at line 75 of file vpRGBa.cpp.

References A, B, G, and R.

vpRGBa & vpRGBa::operator=

(

const vpColVector &

v

)

Cast a vpColVector in a vpRGBa

Parameters

v	: Input vector. v[0], v[1], v[2], v[3] are to make into relation with respectively R, G, B and A.

Exceptions

vpException::dimensionError

: If v is not a 4 four dimention vector.

Definition at line 94 of file vpRGBa.cpp.

References A, B, vpException::dimensionError, G, vpMatrix::getRows(), R, and vpERROR_TRACE.

bool vpRGBa::operator==

(

const vpRGBa &

v

)

Compare two RGBa values.

Returns

true if the values are the same, false otherwise.

Definition at line 112 of file vpRGBa.cpp.

References A, B, G, and R.

bool vpRGBa::operator>

(

const vpRGBa &

v

)

const

Definition at line 251 of file vpRGBa.cpp.

References B, G, and R.

Friends And Related Function Documentation

VISP_EXPORT vpRGBa operator* ( const double &  x, const vpRGBa &  rgb  )

friend

Definition at line 259 of file vpRGBa.cpp.

Member Data Documentation

unsigned char vpRGBa::A

Additionnal component.

Definition at line 149 of file vpRGBa.h.

Referenced by vpImageConvert::convert(), vpDisplayX::getImage(), operator!=(), operator*(), operator+(), operator-(), operator=(), and operator==().

unsigned char vpRGBa::B

Blue component.

Definition at line 148 of file vpRGBa.h.

Referenced by vpDisplayX::clearDisplay(), vpImageConvert::convert(), vpDisplayOpenCV::displayCharString(), vpDisplayX::displayCharString(), vpDisplayGTK::displayCharString(), vpDisplayOpenCV::displayCircle(), vpDisplayX::displayCircle(), vpDisplayGTK::displayCircle(), vpDisplayOpenCV::displayDotLine(), vpDisplayX::displayDotLine(), vpDisplayGTK::displayDotLine(), vpDisplayOpenCV::displayLine(), vpDisplayX::displayLine(), vpDisplayGTK::displayLine(), vpDisplayX::displayPoint(), vpDisplayGTK::displayPoint(), vpDisplayOpenCV::displayRectangle(), vpDisplayX::displayRectangle(), vpDisplayGTK::displayRectangle(), vpDisplayX::getImage(), vpImageSimulator::getImage(), vpDisplayX::init(), vpDisplayOpenCV::init(), operator!=(), operator*(), operator+(), operator-(), operator<(), operator=(), operator==(), operator>(), vpImageIo::readPPM(), and vpImageIo::writePPM().

unsigned char vpRGBa::G

Green component.

Definition at line 147 of file vpRGBa.h.

Referenced by vpDisplayX::clearDisplay(), vpImageConvert::convert(), vpDisplayOpenCV::displayCharString(), vpDisplayX::displayCharString(), vpDisplayGTK::displayCharString(), vpDisplayOpenCV::displayCircle(), vpDisplayX::displayCircle(), vpDisplayGTK::displayCircle(), vpDisplayOpenCV::displayDotLine(), vpDisplayX::displayDotLine(), vpDisplayGTK::displayDotLine(), vpDisplayOpenCV::displayLine(), vpDisplayX::displayLine(), vpDisplayGTK::displayLine(), vpDisplayX::displayPoint(), vpDisplayGTK::displayPoint(), vpDisplayOpenCV::displayRectangle(), vpDisplayX::displayRectangle(), vpDisplayGTK::displayRectangle(), vpDisplayX::getImage(), vpImageSimulator::getImage(), vpDisplayX::init(), vpDisplayOpenCV::init(), operator!=(), operator*(), operator+(), operator-(), operator<(), operator=(), operator==(), operator>(), vpImageIo::readPPM(), and vpImageIo::writePPM().

unsigned char vpRGBa::R

Red component.

Definition at line 146 of file vpRGBa.h.

Referenced by vpDisplayX::clearDisplay(), vpImageConvert::convert(), vpDisplayOpenCV::displayCharString(), vpDisplayX::displayCharString(), vpDisplayGTK::displayCharString(), vpDisplayOpenCV::displayCircle(), vpDisplayX::displayCircle(), vpDisplayGTK::displayCircle(), vpDisplayOpenCV::displayDotLine(), vpDisplayX::displayDotLine(), vpDisplayGTK::displayDotLine(), vpDisplayOpenCV::displayLine(), vpDisplayX::displayLine(), vpDisplayGTK::displayLine(), vpDisplayX::displayPoint(), vpDisplayGTK::displayPoint(), vpDisplayOpenCV::displayRectangle(), vpDisplayX::displayRectangle(), vpDisplayGTK::displayRectangle(), vpDisplayX::getImage(), vpImageSimulator::getImage(), vpDisplayX::init(), vpDisplayOpenCV::init(), operator!=(), operator*(), operator+(), operator-(), operator<(), operator=(), operator==(), operator>(), vpImageIo::readPPM(), and vpImageIo::writePPM().