Class pv.Color.Rgb

Represents a color in RGB space.

Defined in: Color.js.

Class Summary
Constructor Attributes	Constructor Name and Description
	pv.Color.Rgb(r, g, b, a) Constructs a new RGB color with the specified channel values.

Field Summary
Field Attributes	Field Name and Description
	a The alpha channel, a float in [0, 1].
	b The blue channel, an integer in [0, 255].
	g The green channel, an integer in [0, 255].
	r The red channel, an integer in [0, 255].

Fields borrowed from class pv.Color:: color, opacity

Method Summary
Method Attributes	Method Name and Description
	alpha(a) Constructs a new RGB color with the same red, green and blue channels as this color, with the specified alpha channel.
	blue(b) Constructs a new RGB color with the same red, green and alpha channels as this color, with the specified blue channel.
	brighter(k) Returns a new color that is a brighter version of this color.
	darker(k) Returns a new color that is a darker version of this color.
	green(g) Constructs a new RGB color with the same red, blue and alpha channels as this color, with the specified green channel.
	red(r) Constructs a new RGB color with the same green, blue and alpha channels as this color, with the specified red channel.
	rgb() Returns this.

Class Detail

pv.Color.Rgb(r, g, b, a)

Constructs a new RGB color with the specified channel values.

Parameters:
{number} r: the red channel, an integer in [0,255].
{number} g: the green channel, an integer in [0,255].
{number} b: the blue channel, an integer in [0,255].
{number} a: the alpha channel, a float in [0,1].

Field Detail

{number} a

The alpha channel, a float in [0, 1].

{number} b

The blue channel, an integer in [0, 255].

{number} g

The green channel, an integer in [0, 255].

{number} r

The red channel, an integer in [0, 255].

Method Detail

alpha(a)

Constructs a new RGB color with the same red, green and blue channels as this color, with the specified alpha channel.

Parameters:
{number} a: the alpha channel, a float in [0,1].

blue(b)

Constructs a new RGB color with the same red, green and alpha channels as this color, with the specified blue channel.

Parameters:
{number} b: the blue channel, an integer in [0,255].

{pv.Color.Rgb} brighter(k)

Returns a new color that is a brighter version of this color. This method applies an arbitrary scale factor to each of the three RGB components of this color to create a brighter version of this color. Although brighter and darker are inverse operations, the results of a series of invocations of these two methods might be inconsistent because of rounding errors.

Parameters:
k Optional: {number} an optional scale factor; defaults to 1.

Returns:: {pv.Color.Rgb} a brighter color.

See:: #darker

{pv.Color.Rgb} darker(k)

Returns a new color that is a darker version of this color. This method applies an arbitrary scale factor to each of the three RGB components of this color to create a darker version of this color. Although brighter and darker are inverse operations, the results of a series of invocations of these two methods might be inconsistent because of rounding errors.

Parameters:
k Optional: {number} an optional scale factor; defaults to 1.

Returns:: {pv.Color.Rgb} a darker color.

See:: #brighter

green(g)

Constructs a new RGB color with the same red, blue and alpha channels as this color, with the specified green channel.

Parameters:
{number} g: the green channel, an integer in [0,255].

red(r)

Constructs a new RGB color with the same green, blue and alpha channels as this color, with the specified red channel.

Parameters:
{number} r: the red channel, an integer in [0,255].

{pv.Color.Rgb} rgb()

Returns this.

Returns:: {pv.Color.Rgb} this.

Classes

Class pv.Color.Rgb