Package com.diozero.ws281xj

Class PixelColour

java.lang.Object

com.diozero.ws281xj.PixelColour

public class PixelColour
extends Object

0x00RRGGBB

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BLUE
static final int	COLOUR_COMPONENT_MAX
static final int	GREEN
static final int	LIGHT_BLUE
static final int	ORANGE
static final int	PINK
static final int	PURPLE
static final int[]	RAINBOW
static final int	RED
static final int	YELLOW

Constructor Summary

Constructors

Constructor	Description
PixelColour()

Method Summary

Modifier and Type	Method	Description
static int	createColourHSB(float hue, float saturation, float brightness)	Creates a colour based on the specified values in the HSB colour model.
static int	createColourHSL(float hue, float saturation, float luminance)	Creates a colour based on the specified values in the HSL colour model.
static int	createColourRGB(float red, float green, float blue)	Create a colour from relative RGB values
static int	createColourRGB(int red, int green, int blue)	Create a colour from int RGB values
static int	getBlueComponent(int colour)
static int	getGreenComponent(int colour)
static int	getRedComponent(int colour)
static int	setBlueComponent(int colour, int blue)
static int	setGreenComponent(int colour, int green)
static int	setRedComponent(int colour, int red)
static void	validateColourComponent(String colour, int value)
static int	wheel(int wheelPos)	Input a value 0 to 255 to get a colour value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

RED

public static final int RED

See Also:

• Constant Field Values

ORANGE

public static final int ORANGE

See Also:

• Constant Field Values

YELLOW

public static final int YELLOW

See Also:

• Constant Field Values

GREEN

public static final int GREEN

See Also:

• Constant Field Values

LIGHT_BLUE

public static final int LIGHT_BLUE

See Also:

• Constant Field Values

BLUE

public static final int BLUE

See Also:

• Constant Field Values

PURPLE

public static final int PURPLE

See Also:

• Constant Field Values

PINK

public static final int PINK

See Also:

• Constant Field Values

RAINBOW

public static final int[] RAINBOW

COLOUR_COMPONENT_MAX

public static final int COLOUR_COMPONENT_MAX

See Also:

• Constant Field Values

Constructor Details

PixelColour

public PixelColour()

Method Details

wheel

public static int wheel(int wheelPos)

Input a value 0 to 255 to get a colour value. The colours are a transition r - g - b - back to r.

Parameters:

wheelPos - Position on the colour wheel (range 0..255).

Returns:

24-bit RGB colour value

createColourRGB

public static int createColourRGB(float red,
 float green,
 float blue)

Create a colour from relative RGB values

Parameters:

red - Red %, 0 to 1

green - Green %, 0 to 1

blue - Blue %, 0 to 1

Returns:

RGB colour integer value

createColourRGB

public static int createColourRGB(int red,
 int green,
 int blue)

Create a colour from int RGB values

Parameters:

red - Red component 0 to 255

green - Green component 0 to 255

blue - Blue component 0 to 255

Returns:

RGB colour integer value

createColourHSB

public static int createColourHSB(float hue,
 float saturation,
 float brightness)

Creates a colour based on the specified values in the HSB colour model.

Parameters:

hue - The hue, in degrees, 0.0 to 1.0

saturation - The saturation %, 0.0 to 1.0

brightness - The brightness %, 0.0 to 1.0

Returns:

RGB colour integer value

Throws:

IllegalArgumentException - if hue, saturation, brightness are out of range

createColourHSL

public static int createColourHSL(float hue,
 float saturation,
 float luminance)

Creates a colour based on the specified values in the HSL colour model.

Parameters:

hue - The hue, in degrees, 0.0 to 360.0

saturation - The saturation %, 0.0 to 1.0

luminance - The luminance %, 0.0 to 1.0

Returns:

RGB colour integer value

Throws:

IllegalArgumentException - if hue, saturation, brightness are out of range

validateColourComponent

public static void validateColourComponent(String colour,
 int value)

getRedComponent

public static int getRedComponent(int colour)

setRedComponent

public static int setRedComponent(int colour,
 int red)

getGreenComponent

public static int getGreenComponent(int colour)

setGreenComponent

public static int setGreenComponent(int colour,
 int green)

getBlueComponent

public static int getBlueComponent(int colour)

setBlueComponent

public static int setBlueComponent(int colour,
 int blue)