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Diffstat (limited to 'Master/xemtex/gslib/docie.ps')
-rw-r--r-- | Master/xemtex/gslib/docie.ps | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/Master/xemtex/gslib/docie.ps b/Master/xemtex/gslib/docie.ps new file mode 100644 index 00000000000..010f48d8cd6 --- /dev/null +++ b/Master/xemtex/gslib/docie.ps @@ -0,0 +1,219 @@ +% Copyright (C) 1995 Aladdin Enterprises. All rights reserved. +% +% This program is free software; you can redistribute it and/or modify it +% under the terms of the GNU General Public License as published by the +% Free Software Foundation; either version 2 of the License, or (at your +% option) any later version. +% +% This program is distributed in the hope that it will be useful, but +% WITHOUT ANY WARRANTY; without even the implied warranty of +% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General +% Public License for more details. +% +% You should have received a copy of the GNU General Public License along +% with this program; if not, write to the Free Software Foundation, Inc., +% 59 Temple Place, Suite 330, Boston, MA, 02111-1307. + +% $Id: docie.ps,v 1.2.6.1.2.1 2003/04/12 14:02:38 giles Exp $ +% docie.ps +% Emulate CIE algorithms in PostScript. + +% ---------------- Auxiliary procedures ---------------- % + +/r1default [0 1] def +/r3default [0 1 0 1 0 1] def + +/apply3 % <u> <v> <w> [<pu> <pv> <pw>] apply3 <u'> <v'> <w'> + { { 4 -1 roll exch exec } forall + } bind def + +/restrict % <u> <min> <max> restrict <u'> + { 3 1 roll .max .min + } bind def + +/restrict3 % <u> <v> <w> [<minu> ... <maxw>] restrict3 <u'> <v'> <w'> + { aload pop + 7 -1 roll 3 1 roll restrict 7 1 roll + 5 -1 roll 3 1 roll restrict 5 1 roll + restrict 3 1 roll + } bind def + +/rescale % <u> <min> <max> rescale <u'> + { 1 index sub 3 1 roll sub exch div 0 .max 1 .min + } bind def + +/rescale3 % <u> <v> <w> [<minu> ... <maxw>] rescale3 <u'> <v'> <w'> + { aload pop + 7 -1 roll 3 1 roll rescale 7 1 roll + 5 -1 roll 3 1 roll rescale 5 1 roll + rescale 3 1 roll + } bind def + +/mmult3 % <u> <v> <w> [<uu> <uv> ... <wv> <ww>] mmult3 + % <u'> <v'> <w'> + { 4 -1 roll dup dup 6 -1 roll dup dup 8 -1 roll dup dup + 10 -1 roll { 10 -1 roll mul } forall + % Stack: u1 v1 w1 u2 v2 w2 u3 v3 w3 + 4 -1 roll add 6 -1 roll add + % Stack: u1 v1 u2 v2 u3 v3 w' + 7 1 roll 3 -1 roll add 4 -1 roll add + % Stack: w' u1 u2 u3 v' + 5 1 roll add add 3 1 roll + } bind def + +/minvert3 % [<uu> <uv> ... <wv> <ww>] minvert3 + % [<uu'> <uv'> ... <wv'> <ww'>] + { 16 dict begin + aload pop { I H G F E D C B A } { exch def } forall + /coa E I mul F H mul sub def + /cob F G mul D I mul sub def + /coc D H mul E G mul sub def + /det A coa mul B cob mul add C coc mul add def + [ coa det div + C H mul B I mul sub det div + B F mul C E mul sub det div + cob det div + A I mul C G mul sub det div + C D mul A F mul sub det div + coc det div + B G mul A H mul sub det div + A E mul B D mul sub det div + ] + end + } bind def + +/print1 + { print dup == + } bind def + +/print3 + { print 3 array astore dup == aload pop + } bind def + +% ---------------- Mapping to XYZ ---------------- % + +/csmap % <csdict> <l> <m> <n> csmap <csdict> <x> <y> <z> + { 3 index /RangeLMN .knownget not { r3default } if restrict3 +DEBUG { (After RangeLMN Decode: ) print3 } if + 3 index /DecodeLMN .knownget { apply3 } if +DEBUG { (After DecodeLMN Decode: ) print3 } if + 3 index /MatrixLMN .knownget { mmult3 } if +DEBUG { (After MatrixLMN Decode: ) print3 } if + } bind def + +/csciea % <csdict> <a> csciea <csdict> <x> <y> <z> + { 1 index /RangeA .knownget not { r1default } if restrict +DEBUG { (After RangeA Decode: ) print1 } if + 1 index /DecodeA .knownget { exec } if +DEBUG { (After DecodeA Decode: ) print1 } if + 1 index /MatrixA .knownget + { { 1 index mul exch } forall pop } + { dup dup } + ifelse +DEBUG { (After MatrixA Decode: ) print3 } if + csmap + } bind def + +/cscieabc % <csdict> <a> <b> <c> cscieabc <csdict> <x> <y> <z> + { 3 index /RangeABC .knownget not { r3default } if restrict3 +DEBUG { (After RangeABC Decode: ) print3 } if + 3 index /DecodeABC .knownget { apply3 } if +DEBUG { (After DecodeABC Decode: ) print3 } if + 3 index /MatrixABC .knownget { mmult3 } if +DEBUG { (After MatrixABC Decode: ) print3 } if + csmap + } bind def + +% ---------------- Rendering from XYZ ---------------- % + +/lookup3 % <rtable> <a[0..1]> <b[0..1]> <c[0..1]> lookup3 + % <rtable> <bytes> + { 3 -1 roll 3 index 0 get 1 sub mul + 3 -1 roll 3 index 1 get 1 sub mul + 3 -1 roll 3 index 2 get 1 sub mul + % Stack: rtable ia ib ic +DEBUG { (RenderTable indices: ) print3 mark 5 1 roll } if + 3 -1 roll round cvi 3 index 3 get exch get + % Stack: rtable ib ic string + 3 -1 roll round cvi 3 index 2 get mul + % Stack: rtable ic string ib*nc + 3 -1 roll round cvi add 2 index 4 get mul + % Stack: rtable string index + 2 index 4 get getinterval + % Stack: rtable bytes +DEBUG { (RenderTable values: ) print (<) print (%stdout) (w) file 1 index writehexstring (>) = } if + } bind def + +/bpdefault [0 0 0] def + +/crmap % <csdict> <crdict> <x> <y> <z> crmap <v1> ... + { +DEBUG { (CIE XYZ = ) print3 } if + 3 index /MatrixPQR .knownget { mmult3 } if +DEBUG { (After MatrixPQR: ) print3 } if + 4 index /WhitePoint get + 5 index /BlackPoint .knownget not { bpdefault } if + 5 index /WhitePoint get + 6 index /BlackPoint .knownget not { bpdefault } if + 4 + { 4 -1 roll aload pop + % Stack: csdict crdict x y z pt pt pt px py pz + 3 copy 12 index /MatrixPQR .knownget { mmult3 } if 6 array astore + } + repeat + % Stack: csdict crdict x y z wps+ bps+ wpd+ bpd+ + 9 -1 roll pop % get rid of csdict + 7 4 roll + 7 index /TransformPQR get + { % Stack: crdict wps+ bps+ wpd+ bpd+ u v w proc + 8 copy exch pop exch pop + exec exch pop 4 -1 roll pop + } + forall + 7 3 roll pop pop pop pop % get rid of White/BlackPoints +DEBUG { (After TransformPQR: ) print3 } if + 3 index /MatrixPQR .knownget { minvert3 mmult3 } if +DEBUG { (After MatrixPQR': ) print3 } if + 3 index /MatrixLMN .knownget { mmult3 } if +DEBUG { (After MatrixLMN Encode: ) print3 } if + 3 index /EncodeLMN .knownget { apply3 } if +DEBUG { (After EncodeLMN Encode: ) print3 } if + 3 index /RangeLMN .knownget not { r3default } if restrict3 +DEBUG { (After RangeLMN Encode: ) print3 } if + 3 index /MatrixABC .knownget { mmult3 } if +DEBUG { (After MatrixABC Encode: ) print3 } if + 3 index /EncodeABC .knownget { apply3 } if +DEBUG { (After EncodeABC Encode: ) print3 } if + 3 index /RangeABC .knownget not { r3default } if + 5 -1 roll /RenderTable .knownget + { % Stack: u v w ranges rtable + 5 1 roll rescale3 +DEBUG { (Rescaled ABC: ) print3 } if + % Stack: rtable a b c + lookup3 + % Stack: rtable bytes + 0 1 3 index 4 get 1 sub + { % Stack: values rtable bytes c + 2 copy get 255 div + % Stack: values rtable bytes c v + 3 index 3 -1 roll 5 add get exec 3 1 roll + } + for pop pop +DEBUG { (After RenderTableT: ) print ] dup == aload pop } if + } + { restrict3 +DEBUG { (After RangeABC Encode: ) print3 } if + } + ifelse + } bind def + +% ---------------- Top level control ---------------- % + +/mapdict mark + /CIEBasedA { 1 get exch csciea currentcolorrendering 4 1 roll crmap } bind + /CIEBasedABC { 1 get 4 1 roll cscieabc currentcolorrendering 4 1 roll crmap } bind +.dicttomark def +/mapcie % <a> mapcie <v1> ... + % <a> <b> <c> mapcie <v1> ... + { currentcolorspace dup 0 get //mapdict exch get exec + } bind def |