DIRECTORY
	GraphicsDefs: FROM "GraphicsDefs" USING [Bitmap];

HalftoneDefs: DEFINITIONS = 
  BEGIN OPEN GraphicsDefs;

SetHalftoneResolution: PROCEDURE [nOutputBitsPerPixel,fieldLength,nOffsetBits: CARDINAL,useError: BOOLEAN _ TRUE,distributeError: BOOLEAN _ FALSE];

InitHalftone: PROCEDURE [
	x,y: CARDINAL,	--top left corner in bitmap
	nInputPixels,nOutputDots: CARDINAL,	--8 bit pixels, packed
	black: INTEGER _ 0,white: INTEGER _ 255, 
	bitmap: POINTER TO Bitmap _ NIL,
	nInputLines: CARDINAL _ 0,nOutputLines: CARDINAL _ 0,
	mode: CARDINAL _ 3];

SetTRC: PUBLIC PROCEDURE [trc: POINTER TO ARRAY [0..256) OF CARDINAL];

PrintHalftoneLine: PROCEDURE [p: LONG POINTER] RETURNS [nLinesPrinted: CARDINAL];

END.
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