This class represents the calgray colour space dictionary. This is definitively detailed in:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 63, page 145.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 62, page 183.

The CalGray color space attributes dictionary holds the calibration parameters that define how a single gray component value maps to a CIE XYZ tristimulus value.

CalGray encodes a single-channel luminance value. The component is first raised to the power given by Gamma, then scaled by the Y component of the white point to produce the CIE Y value.

The white point array defines the reference illuminant as CIE XYZ values. It must contain three positive numbers, with the Y component equal to 1.0. This anchors the color space to a specific viewing condition.

The optional black point sets the CIE XYZ values corresponding to a component value of zero. If omitted, the black point defaults to the origin, meaning no output for a zero component.

System.Object
    WebSupergoo.ABCpdf14.Elements.Element
       WebSupergoo.ABCpdf14.Elements.CalGrayColorSpaceAttributesElement