LabColorSpace Class Documentation

classLabColorSpace : ColorSpace

Namespace:com::datalogics::PDFL

Inherits from:
ColorSpace

Detailed Description

A Lab color space is a CIE-based ABC color space with two transformation stages. In this type of space, A, B, and C represent the L*, a*, and b* components of a CIE 1976 L*a*b* space. The range of the first (L*) component is always 0 to 100; the ranges of the second and third (a* and b*) components are defined by the Range.

Constructor & Destructor Documentation

LabColorSpace

LabColorSpace(java.util.List< Double >whitePoint)

Parameters

whitePoint: java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

Create a Lab color space.

The blackPoint defaults to [0.0, 0.0, 0.0].

The range defaults to [-100 100 -100 100]

LabColorSpace

LabColorSpace(java.util.List< Double >whitePoint, java.util.List< Double >blackPoint, java.util.List< Double >range)

Parameters

whitePoint: java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

blackPoint: java.util.List< Double >

An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point. All three of these numbers must be non-negative.

range: java.util.List< Double >

An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space.

Create a Lab color space.

Member Function Documentation

DisposeChildren

voidDisposeChildren()

Returns:

void

[static initializer]

static void[static initializer]()

delete

synchronized voiddelete(Booleandisposing)

Parameters

disposing: Boolean

Returns:

synchronized void

delete

synchronized voiddelete()

Returns:

synchronized void

equals

booleanequals(Objectrhs)

Parameters

rhs: Object

Returns:

boolean

finalize

voidfinalize()

Returns:

void

getBlackPoint

java.util.List< Double >getBlackPoint()

Returns:

An array of three doubles representing the X, Y, and Z tristimulus values of the black point.

The black point tristimulus value for this Lab color space. An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse black point. All three of these numbers must be non-negative. If no black point was specified during construction, the default value [0.0, 0.0, 0.0] is returned.

getName

StringgetName()

Returns:

String

The name of the color space. A named color space may be named something like DeviceRGB. More complicated color spaces may have a name like Indexed or ICCBased.

getNumComponents

intgetNumComponents()

Returns:

The number of color components.

The number of components in the color space. For example, DeviceGray has 1 component, DeviceRGB has 3, and DeviceCMYK has 4.

getPDFObject

PDFObjectgetPDFObject()

Returns:

The PDFObject associated with the color space.

Get the PDFObject associated with the color space. This may be a PDFName, PDFDict, PDFStream, or PDFArray.

getRange

java.util.List< Double >getRange()

Returns:

An array of four doubles specifying the minimum and maximum values for a* and b*.

The range of valid values for the a* and b* components. An array of four numbers [ amin amax bmin bmax ] specifying the range of valid values for the a* and b* (B and C) components of the color space. If no range was specified during construction, the default value [-100, 100, -100, 100] is returned.

getWhitePoint

java.util.List< Double >getWhitePoint()

Returns:

An array of three doubles representing the X, Y, and Z tristimulus values of the white point.

The white point tristimulus value for this Lab color space. An array of three numbers specifying the tristimulus value, in the CIE 1931 XYZ space, of the diffuse white point. The numbers X and Z must be positive, and Y must be equal to 1.0.

sameTypeEquals

booleansameTypeEquals(ColorSpaceother)

Parameters

other: ColorSpace

Returns:

boolean

toString

StringtoString()

Returns:

A string describing this ColorSpace.

Convert a ColorSpace to a string representation.