TSLRGBA Struct Reference

Detailed Description

A colour defined as Red, Green, Blue and Alpha

This struct may be converted to and from an int for use with drawing surface or data layer setFeatureRendering functions

Public Member Functions
	TSLRGBA ()
	TSLRGBA (const TSLRGBA &other)
	Copy Constructor.
TSLRGBA &	operator= (const TSLRGBA &other)
	Assignment Operator.
bool	operator== (const TSLRGBA &rhs) const
	Equality Operator.
bool	operator!= (const TSLRGBA &rhs) const
	Inequality Operator.
	TSLRGBA (unsigned char r, unsigned char g, unsigned char b, unsigned char a=0x00)
int	composeRGB ()
bool	decomposeRGB (int colour)

Public Attributes
unsigned char	m_b
	Blue.
unsigned char	m_g
	Green.
unsigned char	m_r
	Red.
unsigned char	m_a
	Alpha.

Constructor & Destructor Documentation

TSLRGBA() [1/3]

TSLRGBA::TSLRGBA ( )

inline

Constructor All colour components will be initialised to 0x00

TSLRGBA() [2/3]

TSLRGBA::TSLRGBA ( const TSLRGBA & other )

inline

Copy Constructor.

TSLRGBA() [3/3]

TSLRGBA::TSLRGBA ( unsigned char r, unsigned char g, unsigned char b, unsigned char a = 0x00 )

inline

Constructor

Parameters

r	Red
g	Green
b	Blue
a	Alpha

Member Function Documentation

composeRGB()

int TSLRGBA::composeRGB ( )

inline

The equivalent of TSLComposeRGB

Composes the RGB values and returns them as an integer which can be passed to the setFeatureRendering methods on the drawing surface or data layers in place of a colour index.

Any alpha value will be ignored

Returns

The RGB values converted to an int

decomposeRGB()

bool TSLRGBA::decomposeRGB ( int colour )

inline

The equivalent of TSLDecomposeRGB

Given an RGB value as created by TSLComposeRGB or TSLRGBA::composeRGB, this method will set this object's RGB values.

Alpha (m_a) will be set to 0xff

Parameters

colour

An RGB value as created by composeRGB

Returns

false if colour is invalid, true otherwise.

operator!=()

bool TSLRGBA::operator!= ( const TSLRGBA & rhs ) const

inline

Inequality Operator.

operator=()

TSLRGBA & TSLRGBA::operator= ( const TSLRGBA & other )

inline

Assignment Operator.

operator==()

bool TSLRGBA::operator== ( const TSLRGBA & rhs ) const

inline

Equality Operator.

Member Data Documentation

m_a

unsigned char TSLRGBA::m_a

Alpha.

m_b

unsigned char TSLRGBA::m_b

Blue.

m_g

unsigned char TSLRGBA::m_g

Green.

m_r

unsigned char TSLRGBA::m_r

Red.