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Belgian Amiga Club - ADF Collection
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BS1 part 5
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PDraw3.0.adf
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pdraw_dat.lzh
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csep_pdpsprlg
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Text File
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1991-12-16
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5KB
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218 lines
%======================================================================%
% Professional Draw Color Seperation Prologue file: V3.0, Dec 16, 1990 %
%======================================================================%
%
% Handles function re-mapping for Color seperation of documents with EPSF files
% with PostScript color commands: 'setrgbcolor, sethsbcolor' as well as
% ColorPostScript commands: `setcmykcolor, currentcmykcolor, colorimage,
% setcolorscreen, currentcolorscreen' + transfer and UCR/GCR commands.
% "component" is a global variable = 0 which specifies the seperation we're
% currently doing: = 0 for B&W black, 1 for black, 2 for y, 3 for m,
% 4 for c, 5 for mechanical (custom) colors
/component 0 def
/subgray true def
/fourcol false def % used to designate 3 or 4 colour sep.
/setrgb /setrgbcolor load def
/sethsb /sethsbcolor load def
/_setgray /setgray load def
/UCR_fctr 1.0 def
/GCR_fctr 1.0 def
%
% setgray
%
/setgray { % g setgray
subgray
{
component 0 eq component 1 eq or not
{ pop 1.0 }
if
}
if
_setgray
} bdef
%
% Standard PostScript operators:
%
% translate rgb into cmyk with 100% UCR/GCR
/setrgbcolor { % red grn blu setrgbcolor
% call system setrgbcolor so that currentrgbcolr, currenthsbcolor
% will still give correct results:
3 copy setrgb
5 dict begin
1 exch sub /ye exch def
1 exch sub /ma exch def
1 exch sub /cy exch def
/blk 0 def
fourcol { % do 100% UCR/GCR
/min ye def
ma min lt {/min ma def} if
cy min lt {/min cy def} if
min UCR_fctr mul /blk exch def
ye blk sub /ye exch def
ma blk sub /ma exch def
cy blk sub /cy exch def
min GCR_fctr mul /blk exch def
} if
% get the component that we want:
component 0 eq {blk 3 mul ma add ye add cy add 3 div} if
component 1 eq {blk} if
component 2 eq {ye} if
component 3 eq {ma} if
component 4 eq {cy} if
component 5 eq {0} if
1 exch sub _setgray
end
} bdef
/sethsbcolor {
sethsb currentrgbcolor setrgbcolor
} bdef
%
% Color PostScript operators:
%
/setcmykcolor { % cy ma ye blk setcmykcolor
1 sub 4 1 roll
3 { 3 index add neg dup 0 lt { pop 0 } if 3 1 roll } repeat
setrgbcolor pop
} bdef
/currentcmykcolor {
currentgray dup dup dup
} bdef
/setcolorscreen {
component 0 eq {12 3 roll} if
component 1 eq {12 3 roll} if
component 2 eq {12 -6 roll} if
component 3 eq {12 -3 roll} if
% component 4 eq {} if
component 5 eq
{12 {pop} repeat}
{9 {pop} repeat setscreen}
ifelse
} bdef
/currentcolorscreen {
currentscreen 3 copy 3 copy 3 copy
} bdef
/setcolortransfer {
component 0 eq {4 1 roll} if
component 1 eq {4 1 roll} if
component 2 eq {4 -2 roll} if
component 3 eq {4 -1 roll} if
% component 4 eq {} if
component 5 eq
{ pop pop pop pop}
{pop pop pop settransfer}
ifelse
} bdef
/currentcolortransfer {
currenttransfer dup dup dup
} bdef
/setblackgeneration {
pop
} bdef
/currentblackgeneration {
{}
} bdef
/setundercolorremoval {
pop
} bdef
/currentundercolorremoval {
{}
} bdef
/colorimage { % width height bps matrix proc0 [...procn-1] multi ncol colorimage
10 dict begin
/ncol exch def
/multi exch def
ncol 4 eq multi and {
/proc3 exch def
} if
ncol 3 ge multi and {
/proc2 exch def
/proc1 exch def
} if
/proc0 exch def
/mat exch def
/bps exch def
/height exch def
height bps mat
ncol 1 eq
{ % just B&W data
component 0 eq component 1 eq or
{{proc0} image}
{height {proc0 pop} repeat 4 {pop} repeat}
ifelse
}
{
multi
{
/trsave currenttransfer def
% CMYK (4 color) is dark-high, `image' wants light-high
% so invert image:
ncol 4 eq {{1 exch sub} currenttransfer concatprocs settransfer} if
component 0 eq component 1 eq or { % B&W or Black component
ncol 3 eq
{height {proc0 pop proc1 pop proc2 pop} repeat 4 {pop} repeat}
{{proc0 pop proc1 pop proc2 pop proc3} image}
ifelse
} if
component 2 eq { % Yellow component
ncol 3 eq
{{proc0 pop proc1 pop proc2} image}
{{proc0 pop proc1 pop proc2 proc3 pop} image}
ifelse
} if
component 3 eq { % Magenta component
ncol 3 eq
{{proc0 pop proc1 proc2 pop} image}
{{proc0 pop proc1 proc2 pop proc3 pop} image}
ifelse
} if
component 4 eq { % Cyan component
ncol 3 eq
{{proc0 proc1 pop proc2 pop} image}
{{proc0 proc1 pop proc2 pop proc3 pop} image}
ifelse
} if
component 5 eq { % Mechanical color
ncol 3 eq
{height {proc0 pop proc1 pop proc2 pop} repeat 4 {pop} repeat}
{height {proc0 pop proc1 pop proc2 pop proc3 pop} repeat 4 {pop} repeat }
ifelse
} if
/trsave load settransfer
}
{ % not multiproc - can't do anything
height {proc0 pop} repeat 4 {pop} repeat
}
ifelse
}
ifelse
end
} bdef