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%!PS-Adobe-3.0
%
% ********************************************************************************
%
% Colour Plate 4 from the book: "The Theory of the Moire Phenomenon"
% by I. Amidror, published by Kluwer Academic Publishers, 1999.
%
%		* * *  Copyright (c) 1999 EPFL  * * *
%
% Author: I. Amidror
%
% Modified: July 29, 1999
%
% ********************************************************************************
%
% Superposition of 2 colour line gratings - second layer only:
%
% ********************************************************************************
%



/inch {72 mul} def
/centiinch {0.72 mul} def
1.5 centiinch setlinewidth


0.25 inch -0.5 inch translate 




% ************************************ Black grating:

/len 600 def		% grating length in centiinches
/wid 430 def		% grating width in centiinches
/len2 len 2 div def
/wid2 wid 2 div def


/theta1 93 def			% angle of the grating, in degrees

/rot 0 def			% general rotation to prevent printer artifacts

/p1 3 def			% period of the black grating, in centiinches

/xshift1 0.0 p1 mul def		% period-shift of the black grating (e.g. 0.5)



% Draw grating:

gsave
2.95 inch 7.6 inch translate
theta1 rot add rotate
0 0 0 1 setcmykcolor
1.5 centiinch setlinewidth
newpath
0 p1 len		% draw lines
{centiinch len2 p1 div round p1 mul xshift1 sub centiinch sub -3.15 inch moveto
0 centiinch wid centiinch rlineto} for
stroke
grestore


gsave
1.6 inch 2.9 inch translate
0 inch 0 inch moveto
/Times-Bold findfont
12 scalefont setfont
(Colour Plate 4) show
/Times-Roman findfont
12 scalefont setfont
( from the book: ) show
/Times-Italic findfont
12 scalefont setfont
(The Theory of the Moire) show
-0.06 inch 0 inch rmoveto
(\302 Phenomenon) show
/Times-Roman findfont
12 scalefont setfont
0 inch -0.25 inch moveto
(    by I. Amidror, published by Kluwer Academic Publishers, 1999.) show
1.7 inch -0.65 inch moveto
((Second layer only.)) show
grestore


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