CalGrayColorSpace Class Documentation
class CalGrayColorSpace : ColorSpaceNamespace:Datalogics::PDFL
- Inherits from:
ColorSpace
Detailed Description
A calibrated gray color space.
A CalGray color space is a special case of a single-component CIE-based color space, known as a CIE-based A color space.
This type of space is the one-dimensional (and usually achromatic) analog of CIE-based ABC spaces.
Uses types
Constructor & Destructor Documentation
CalGrayColorSpace
CalGrayColorSpace(System.Collections.Generic.IList< System.Double > whitePoint)Parameters
whitePoint: System.Collections.Generic.IList< System.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 CalGray color space.
The blackPoint defaults to [0.0, 0.0, 0.0].
The gamma defaults to 1
CalGrayColorSpace
CalGrayColorSpace(System.Collections.Generic.IList< System.Double > whitePoint, System.Collections.Generic.IList< System.Double > blackPoint, double gamma)Parameters
whitePoint: System.Collections.Generic.IList< System.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: System.Collections.Generic.IList< System.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.
gamma: doubleA number G defining the gamma for the gray component. G must be positive and is generally greater than or equal to 1.
Create a CalGray color space.
Property Documentation
BlackPoint
System.Collections.Generic.IList< System.Double > BlackPoint[get]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.
DeviceCMYK
static ColorSpace DeviceCMYK[get]The DeviceCMYK color space, representing cyan, magenta, yellow, and black components.
DeviceGray
static ColorSpace DeviceGray[get]The DeviceGray color space, representing a single grayscale component.
DeviceRGB
static ColorSpace DeviceRGB[get]The DeviceRGB color space, representing red, green, and blue components.
DeviceRGBA
static ColorSpace DeviceRGBA[get]The DeviceRGBA color space, representing red, green, blue, and alpha components.
Gamma
double Gamma[get]A number G defining the gamma for the gray component. G must be positive and is generally greater than or equal to 1.
Lab
static ColorSpace Lab[get]The CIE-based L*a*b* color space.
LabA
static ColorSpace LabA[get]The CIE-based L*a*b* color space with an alpha component.
Name
string Name[get]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.
NumComponents
int NumComponents[get]The number of components in the color space.
For example, DeviceGray has 1 component, DeviceRGB has 3, and DeviceCMYK has 4.
PDFObject
PDFObject PDFObject[get]Get the PDFObject associated with the color space. This may be a PDFName, PDFDict, PDFStream, or PDFArray.
WhitePoint
System.Collections.Generic.IList< System.Double > WhitePoint[get]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.
Member Function Documentation
Dispose
void Dispose()Returns:
voidEquals
override bool Equals(object obj)Parameters
obj: object
Returns:
override boolToString
override string ToString()Returns:
override stringA string describing this ColorSpace.
Convert a ColorSpace to a string representation.
operator!=
static bool operator!=(ColorSpace a, ColorSpace b)Parameters
a: ColorSpaceThe first ColorSpace to compare.
b: ColorSpaceThe second ColorSpace to compare.
Returns:
booltrue if the two ColorSpace objects are not equal; false otherwise.
Test two ColorSpace objects for inequality.
operator==
static bool operator==(ColorSpace a, ColorSpace b)Parameters
a: ColorSpaceThe first ColorSpace to compare.
b: ColorSpaceThe second ColorSpace to compare.
Returns:
booltrue if the two ColorSpace objects are equal; false otherwise.
Test two ColorSpace objects for equality.