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Diffstat (limited to 'Master/texmf-dist/dvips/aurora/aurora.pro')
| -rw-r--r-- | Master/texmf-dist/dvips/aurora/aurora.pro | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/Master/texmf-dist/dvips/aurora/aurora.pro b/Master/texmf-dist/dvips/aurora/aurora.pro new file mode 100644 index 00000000000..03e9ef435f6 --- /dev/null +++ b/Master/texmf-dist/dvips/aurora/aurora.pro @@ -0,0 +1,275 @@ +%! +% Aurora: Colour Separation for Level 1 PostScript. +% Copyright: Graham Freeman, 1994. +% gfreeman@cs.adfa.oz.au +% All Rights Reserved. +% This program may not be used for commercial purposes without +% the consent of the author. It may be freely transmitted +% provided this authorship and copyright notice is retained +% unmodified. + systemdict /setpacking known + {/SavePacking currentpacking def true setpacking}if +/_c+stat 29 dict def +_c+stat begin +/Colour [0 0 0 1] def +/RGB [0 0 0] def +/AllColour [1 1 1 1] def +/setcolour {this type /arraytype eq + {true 0 1 3 {dup Colour exch get AllColour 3 -1 roll get eq and + dup not {exit}if} for % Is current colour == 1,1,1,1 ? + {1} + {0 0 1 3{this exch get dup mul add}for + 0 0 1 3{Colour exch get dup mul add}for + 0 0 1 3{dup Colour exch get this 3 -1 roll get mul add}for + 3 copy 3 1 roll mul sqrt dup 0 gt + {div 0.98 lt + {3{pop}repeat 0} + {exch pop exch div dup 1 gt {pop 1}if} ifelse} + {5{pop}repeat 0} ifelse + }ifelse } + {Colour this get}ifelse + 1 exch sub setgray} bind def +/this 3 def +/transfer [{} dup dup dup] def +/screen [4 {currentscreen 3 array astore}repeat ] def +% {dup mul exch dup mul add 1 exch sub} +/blackgenerate {1 exch sub dup .25 gt {pop 0}{4 mul 1 exch sub}ifelse} def +/undercolourremove {pop 0} def +/bound {dup 0 lt{pop 0}if dup 1 gt{pop 1}if} def +/_c+image [/image load dup type /operatortype ne {/exec cvx}if] cvx def +/I 0 def +/J 0 def +/mask 255 def +/nbit 8 def +/buffer 1 string def +/gsavestack 31 array def +/gsavepointer -1 def +/bitandchpos {I nbit mul dup 8 mod nbit add 8 exch sub exch 8 idiv}def +/storebitval { + mask and bitandchpos % val bitpos chpos + buffer 1 index get mask 3 index bitshift not and %val bitpos chpos otherbits + 4 -2 roll bitshift or buffer 3 1 roll put }def +/buffercheck {dup length buffer length gt + {dup length string /buffer exch def}if }def +/cmyk2blackvalue { + this 1 eq {4 -1 roll} if + this 2 eq {4 -2 roll} if + this 3 eq {4 1 roll} if + pop pop pop} def +/compl { + dup type dup /integertype eq exch /booleantype eq or {not}{ + dup type /stringtype eq {dup dup length 1 sub 0 1 3 -1 roll + {/J exch def dup J get not 255 and J exch put dup}for pop }if + }ifelse }def +/rgb2cmyk {3 {1 exch sub 3 1 roll}repeat + min3 dup undercolourremove exch blackgenerate 5 1 roll + 3{dup 3 1 roll sub bound 5 1 roll}repeat pop} def +/max3 {2 index 2 index lt{1 index}{2 index}ifelse dup 2 index lt{pop dup}if} def +/min3 {2 index 2 index lt{2 index}{1 index}ifelse dup 2 index gt{pop dup}if} def +/hsb2rgb {3 -1 roll 6 mul dup 6 eq {pop 0}if dup floor cvi + 2 index 4 index 1 exch sub mul exch dup 2 mod 0 eq + {dup 4 -1 roll sub 1 add 5 -1 roll mul 1 exch sub 3 index mul 3 1 roll + dup 0 eq{pop}{2 eq {3 1 roll}{3 -1 roll}ifelse}ifelse } + {dup 4 -1 roll exch sub 5 -1 roll mul 1 exch sub 3 index mul exch + dup 1 eq{pop 3 1 roll}{3 eq {3 -1 roll}if}ifelse } + ifelse} def +/rgb2hsb {max3 4 1 roll min3 4 index exch sub + dup 5 index 0 eq {pop 0}{5 index div}ifelse 6 1 roll dup 0 eq + {6 1 roll pop pop pop} + {3 index 1 index eq {2 index 2 index sub exch div} + {2 index 1 index eq {1 index 4 index sub exch div 2 add} + {3 index 3 index sub exch div 4 add}ifelse}ifelse} + ifelse 6 div 6 1 roll pop pop pop} def +/saveproc {_c+stat begin + /gsavepointer gsavepointer 1 add def + gsavepointer gsavestack length ge + {/gsavestack gsavestack gsavepointer 2 mul array dup 3 1 roll copy pop def} + if gsavestack gsavepointer get + type /arraytype ne {gsavestack gsavepointer 7 array dup 0 4 array put + dup 1 3 array put dup 2 4 array put dup 3 4 array put put} if + gsavestack gsavepointer get + dup 0 get Colour exch copy pop dup 1 get RGB exch copy pop + dup 2 get screen exch copy pop dup 3 get transfer exch copy pop + dup 4 /undercolourremove load put dup 5 /blackgenerate load put + 6 false put end } def +end + +/currentgray {_c+stat /Colour get aload pop + 4 1 roll .11 mul 4 1 roll .59 mul 4 1 roll .3 mul add add add + 1 exch sub dup 0 lt {pop 0}if} bind def +/currentcmykcolor {_c+stat /Colour get aload pop} bind def +/setcmykcolor {_c+stat begin Colour astore + aload pop 4 1 roll 3{3 index add dup 1 gt{pop 1}if 1 exch sub 3 1 roll}repeat + 4 -1 roll pop RGB astore pop setcolour end} bind def +/setrgbcolor {_c+stat begin 3{2 index}repeat RGB astore pop + rgb2cmyk Colour astore pop setcolour end} def +/currentrgbcolor {_c+stat /RGB get aload pop} bind def +/sethsbcolor {_c+stat begin hsb2rgb setrgbcolor end} def +/currenthsbcolor {_c+stat begin RGB aload pop rgb2hsb end} def +/setcolorscreen {_c+stat begin 3 -1 0{screen exch get astore pop}for + this type /arraytype ne + {screen this get aload pop setscreen}if end} bind def +/currentcolorscreen {_c+stat begin 0 1 3 {screen exch get aload pop}for end} + bind def +/setcolortransfer [{_c+stat begin transfer astore pop this type /arraytype ne} + /exec load + [{transfer this get} /exec load + /settransfer load dup type /operatortype ne {/exec cvx}if] cvx + /if load /end load] + cvx def +/settransfer [{ _c+stat begin 0 1 3 {transfer exch 2 index put}for end} + /exec load + [ /settransfer load dup type /operatortype ne {/exec cvx}if ] cvx + /exec load ] cvx def +/currentcolortransfer {_c+stat /transfer get aload pop} bind def +/setblackgeneration {_c+stat /blackgenerate 3 -1 roll put} bind def +/currentblackgeneration {_c+stat /blackgenerate get} bind def +/setundercolorremoval {_c+stat /undercolourremove 3 -1 roll put} bind def +/currentundercolorremoval {_c+stat /undercolourremove get} bind def +/colorimage {_c+stat begin dup 1 eq + % 1 + {pop pop this type /arraytype eq + {(Compound colour cannot be handled with "colorimage"\n)print stop}if + this 3 ne + {4 array dup 0 4 -1 roll put dup 1 /exec load put dup + 2 {_c+stat begin buffercheck dup length 1 sub 0 1 3 -1 roll + {buffer exch 255 put}for length buffer exch 0 exch getinterval end} + bind put + dup 3 /exec load put cvx} if + }{3 eq + % 3 + {{this type /arraytype eq % true 3 + {(Compound colour cannot be handled with "colorimage"\n)print stop}if + 4 index 8 ne % not 8 bits + {4 index {dup 1 eq {exit}if dup 2 mod 0 ne + {(Only 1,2,4 or 8-bit images can be handled\n)print stop}if 2 idiv} + loop pop + 4 index 1 sub 1 exch {1 bitshift 1 or}repeat _c+stat /mask 3 -1 roll put + 4 index _c+stat /nbit 3 -1 roll put + 8 array dup + 2 -1 0 {2 mul dup 2 index exch 6 -1 roll put 1 add /exec load put dup}for + 6 {_c+stat begin buffercheck 0 1 2 index length 8 mul nbit idiv 1 sub + {/I exch def I nbit mul dup 8 mod nbit add 8 sub exch 8 idiv + 3{4 index 1 index get 2 index bitshift mask and mask div 3 1 roll} + repeat % RGB values found + pop pop rgb2cmyk cmyk2blackvalue mask mul round cvi not mask and + storebitval}for + pop pop pop buffer 0 I 1 add nbit mul 8 idiv getinterval end} bind put + dup 7 /exec load put cvx} + {8 array dup % 8 bits + 2 -1 0 {2 mul dup 2 index exch 6 -1 roll put 1 add /exec load put dup}for + 6 {_c+stat begin buffercheck 0 1 2 index length 1 sub + {/I exch def 3{2 index I get 255 div}repeat + rgb2cmyk cmyk2blackvalue 255 mul round cvi not 255 and + buffer I 3 -1 roll put}for + pop pop pop buffer 0 I 1 add getinterval end} bind put + dup 7 /exec load put cvx}ifelse} + % false 3 + {this type /arraytype eq + {(Compound colour cannot be handled with "colorimage"\n)print stop}if + 2 index 8 ne % not 8 bits + {2 index {dup 1 eq {exit}if dup 2 mod 0 ne + {(Only 1,2,4 or 8-bit images can be handled\n)print stop}if 2 idiv} + loop pop + 2 index 1 sub 1 exch {1 bitshift 1 or}repeat _c+stat /mask 3 -1 roll put + 2 index _c+stat /nbit 3 -1 roll put + 4 array dup 0 4 -1 roll put dup 1 /exec load put dup + 2 {_c+stat begin buffercheck dup length 8 mul nbit idiv 3 idiv /I 0 def + {dup 0 1 2{I 3 mul add nbit mul dup 8 mod nbit add 8 sub + exch 8 idiv 2 index exch get exch bitshift mask and mask div exch}for + % RGB values found + pop rgb2cmyk cmyk2blackvalue mask mul round cvi not mask and storebitval + /I I 1 add def}repeat + pop buffer 0 I nbit mul 8 idiv getinterval end} bind put + dup 3 /exec load put cvx} + {4 array dup 0 4 -1 roll put dup 1 /exec load put dup % 8 bits + 2 {_c+stat begin buffercheck dup length 3 idiv /I 0 def /J 0 def + {dup J get 255 div 1 index J 1 add get 255 div + 2 index J 2 add get 255 div rgb2cmyk cmyk2blackvalue 255 mul round cvi + not 255 and buffer I 3 -1 roll put /I I 1 add def /J J 3 add def}repeat + pop buffer 0 I getinterval end} + bind put dup 3 /exec load put cvx}ifelse}ifelse} + % 4 + {{this type /arraytype eq % true 4 + {(Compound colour cannot be handled with "colorimage"\n)print stop}if + 5 index {dup 1 eq {exit}if dup 2 mod 0 ne + {(Only 1,2,4 or 8-bit images can be handled\n)print stop}if 2 idiv} + loop pop + 10 array dup 0 7 -1 roll put dup 1 /exec load put + dup 2 6 -1 roll put dup 3 /exec load put dup 4 5 -1 roll put + dup 5 /exec load put dup 6 4 -1 roll put dup 7 /exec load put + dup 8 {_c+stat begin cmyk2blackvalue buffercheck buffer copy compl end} + bind put + dup 9 /exec load put cvx} + % false 4 + {this type /arraytype eq + {(Compound colour cannot be handled with "colorimage"\n)print stop}if + 2 index 8 ne % not 8 bits + {2 index {dup 1 eq {exit}if dup 2 mod 0 ne + {(Only 1,2,4 or 8-bit images can be handled\n)print stop}if 2 idiv} + loop pop + 2 index 1 sub 1 exch {1 bitshift 1 or}repeat _c+stat /mask 3 -1 roll put + 2 index _c+stat /nbit 3 -1 roll put + 4 array dup 0 4 -1 roll put dup 1 /exec load put dup + 2 {_c+stat begin buffercheck dup length 8 mul nbit idiv 4 idiv /I 0 def + {dup 0 1 3{I 4 mul add nbit mul dup 8 mod nbit add 8 sub + exch 8 idiv 2 index exch get exch bitshift mask and exch}for + pop cmyk2blackvalue not storebitval /I I 1 add def}repeat + pop buffer 0 I nbit mul 8 idiv getinterval end} bind put + dup 3 /exec load put cvx} + {4 array dup 0 4 -1 roll put dup 1 /exec load put dup % 8 bits + 2 {_c+stat begin buffercheck dup length 4 idiv /I this def /J 0 def + {dup I get not 255 and buffer J 3 -1 roll put /I I 4 add def /J J 1 add def}repeat + pop buffer 0 J getinterval end} bind put + dup 3 /exec load put cvx}ifelse} + ifelse}ifelse}ifelse + end _c+stat /_c+image get exec} def +/setgray {_c+stat begin dup dup dup RGB astore pop + 1 exch sub 0 0 0 4 -1 roll Colour astore pop setcolour end} bind def +/image [{_c+stat begin + this type /arraytype eq + % {(Compound colour cannot be handled with "image"\n)print stop}if + this 3 ne or + { 4 array dup 0 4 -1 roll put dup 1 /exec load put dup + 2 {_c+stat begin buffercheck dup length 1 sub 0 1 3 -1 roll + {buffer exch 255 put}for length buffer exch 0 exch getinterval end} bind put + dup 3 /exec load put cvx} if + end} /exec load /image load dup type /operatortype ne {/exec cvx}if] cvx def +/gsave [_c+stat /saveproc get /exec load + /gsave load dup type /operatortype ne {/exec load}if ] cvx def +/grestore [/grestore load dup type /operatortype ne {/exec cvx}if + {_c+stat begin gsavepointer 0 ge + dup {gsavestack gsavepointer get 6 get and}if + {gsavestack gsavepointer get + dup 0 get Colour copy pop dup 1 get RGB copy pop + dup 2 get screen copy pop dup 3 get transfer copy pop + dup 4 get /undercolourremove exch def 5 get /blackgenerate exch def + /gsavepointer gsavepointer 1 sub def} if end} + /exec load ] cvx def +/grestoreall [/grestoreall load dup type /operatortype ne {/exec cvx}if + {_c+stat begin gsavepointer -1 0 + {/gsavepointer exch def gsavestack gsavepointer get 6 get {exit}if}for + gsavepointer 0 ge + { gsavestack gsavepointer get dup 0 get Colour copy pop + dup 1 get RGB copy pop dup 2 get screen copy pop + dup 3 get transfer copy pop dup 4 get /undercolourremove exch def + dup 5 get /blackgenerate exch def + 6 get not {/gsavepointer -1 def}if } if + end} + /exec load ] cvx def +/save [_c+stat /saveproc get /exec load + {_c+stat begin gsavestack gsavepointer get 6 true put end} /exec load + /save load dup type /operatortype ne {/exec cvx}if] cvx def +/restore [/restore load dup type /operatortype ne {/exec cvx}if + {_c+stat begin gsavepointer 0 ge + {gsavestack gsavepointer get + dup 0 get Colour copy pop dup 1 get RGB copy pop + dup 2 get screen copy pop dup 3 get transfer copy pop + dup 4 get /undercolourremove exch def 5 get /blackgenerate exch def + /gsavepointer gsavepointer 1 sub def} if end} /exec load + ]cvx def +/initgraphics [/initgraphics load dup type /operatortype ne {/exec cvx}if + {0 setgray} /exec load ] cvx def + +systemdict /setpacking known {SavePacking setpacking}if +% End of Aurora: colour separation prelude |