
DIRECTORY ImagerColor;

ImagerColorExtras: CEDAR DEFINITIONS
~ BEGIN OPEN ImagerColor;

ColorFromHighlight: PROC [highlight: Highlight, baseColor: ConstantColor ¬ NIL, highlightColor: ConstantColor ¬ NIL, appearanceHints: Structure ¬ NIL] RETURNS [OpConstantColor];

HighlightFromColor: PROC [c: ConstantColor, baseColor: ConstantColor ¬ NIL, highlightColor: ConstantColor ¬ NIL, appearanceHints: Structure ¬ NIL] RETURNS [Highlight];

NewColorOperatorHighlight: PROC [sWhite, sBlack: REAL, map: PixelEncoding ¬ NIL, baseColor, highlightColor: ConstantColor, appearanceHints: Structure ¬ NIL] RETURNS [ColorOperator];

END.
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ImagerColorExtras.mesa
Copyright Ó 1992 by Xerox Corporation.  All rights reserved.
Michael Plass, March 26, 1992 4:59 pm PST

The interface for highlight color in ImagerColor.mesa did not conform very well to the RasterEncodingStandard.  Here's what I think they should look like:

Highlight
... Xerox/HighlightLinear (Color Encoding Standard)
Highlight: TYPE ~ RECORD [b, h: REAL];
b is fraction of base color (usually white)
h is fraction of highlight color
Defaulted baseColor is interpreted as Find["Xerox/Solid/White"];
Defaulted highlightColor is interpreted as Find["Xerox/Highlight"];
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