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Diffstat (limited to 'Master/texmf-dist/metafont/mftoeps/mftoeps.mf')
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diff --git a/Master/texmf-dist/metafont/mftoeps/mftoeps.mf b/Master/texmf-dist/metafont/mftoeps/mftoeps.mf new file mode 100644 index 00000000000..46bc5a1cb9d --- /dev/null +++ b/Master/texmf-dist/metafont/mftoeps/mftoeps.mf @@ -0,0 +1,748 @@ +%%%% +%%%% This file belongs to the MFTOEPS package. +%%%% +%%% mod div +%%% length cycle pos_turn neg_turn +%%% endchar ori_endchar +%%% draw eofill killtext +%%% draw find_BB set_BB reset_BB +%%% draw draw_C normal_draw_C no_export_draw_C +%%% draw fill_C normal_fill_C no_export_fill_C +%%% draw clip_C normal_clip_C +%%% draw write_preamble normal_write_preamble no_export_write_preamble +%%% endchar write_postamble normal_write_postamble no_export_write_postamble +%%% endchar g_save g_restore +%%% message write_PS normal_write_PS +%%% draw write_def +%%% draw fix_line_width set_line_width +%%% draw fix_line_join set_line_join fix_line_cap set_line_cap +%%% draw fix_miter_limit set_miter_limit fix_dash set_dash +%%% draw fix_fill_cmyk set_fill_cmyk fix_draw_cmyk set_draw_cmyk +%%% draw fix_fill_rgb set_fill_rgb fix_draw_rgb set_draw_rgb +%%% xpart norm_color +%%% mode_setup ori_mode_setup eps_mode_setup EPS_mode_setup +%%% draw mftoeps_default +%%\vsize245mm +%%\font\titfnt cmtt10 at 48 pt +%%{\let\makefootline\empty \let\makeheadline\empty +%%\vglue0ptplus1fill +%%\centerline{\titfnt MFTOEPS.MF} +%%\bigskip +%%\centerline{ver. 0.68 (Tuesday, March 4th, 1997)} +%%\vfill\vfill\eject} +% --- +% \MF format for exporting to EPS via LOG-file + AWK-like utility +% --- +% NAME: MFTOEPS.MF +% AUTHORS: B. Jackowski, P. Pianowski, M. Ry\'cko +% HISTORY: +% Version 0.5 (Friday, May 5th, 1995): first public domain release +% Version 0.6 (Thursday, July 27th, 1995): major revision +% * macro |reset_BB| added (it was silly not to have it) +% * |pickup pencircle scaled 0.4pt| performed by |no_export_write_preamble| +% * `mftoeps_bhook' and `mftoeps_ehook' introduced +% * `setlinecap', `setlinejoin', `setmiterlimit', and `setdash' included +% * switching between no export and compatibility modes made more tidy +% * colours are forced to fall into the interval [0..1] +% * formatting, comments and internal naming altered +% Version 0.65 (Friday, September 1st, 1995): +% A lot of small changes introduced introduced during the work over +% PSTOEPS and EPSTOMF converters, and over ROEX macros: +% * defaults for line joins and caps changed (WARNING: incompatibility +% with the version 0.6 described in proceedings of 9th European \TeX +% Conference, Arnhem, Holland); now they are compatible with PostScript, +% not with our predilections +% * `gsave'/`grestore' grouping added (macros |g_save| and |g_restore|); +% the graphic object is embedded into a `gsave'/`grestore' pair +% * |set_BB| and |find_BB| available also in no-export mode +% * string variable |extra_eps_setup| added +% * a general purpose macro |make_list| added +% * version number appears in the header of EPS file +% * |reset_BB| performed by newly introduced |no_export_write_postamble| +% * definitions of EPS header more robust +% * macros |pos_turn|, |neg_turn|, and |is_line| more robust +% * global defaults defined as in ROEX (macro |mftoeps_default|) +% * code optimized, formatting slightly altered (e.g., the underscore +% character ending a name appears as a superscript asterisk) +% This version was released during the 9th EuroTeX meeting in Arnhem +% Version 0.66 (Tuesday, September 19th, 1995): +% * |find_BB| a bit more robust +% * |is_line| is exactly the same as in ROEX.MF (it should have been +% in version 0.65...) +% This version was released during the CyrTUG-95 meeting in Moscow +% Version 0.67 (Friday, October 27th, 1995): +% * |miter_limit| used to be a dimen; it was my mistake (BJ), +% in PostScript it is a dimensionless quantity +% Version 0.68 (Tuesday, March 4th, 1997): +% * |extra_preamble| and |extra_postamble| added +% --- +if known mftoeps: expandafter endinput fi % no double loading +mftoeps:=1; +vardef mftoeps_ver ="0.68" enddef; +% --- +% DECLARATIONS (only explicitly needed): +no_export_level=0; compatibility_level=1; % constants +let ori_mode_setup=mode_setup; +let ori_endchar=endchar; +boolean closed_path; % set by |normal_fill_C|, |normal_draw_C|, + % |close_op|, and just before writing definitions + % of |mid_draw_op|; checked by |mid_draw_op|; +boolean dash_array_empty; % used locally by |set_dash| +boolean known_yes_eps; % used by |eps_mode_setup| +string extra_eps_setup; % used by |eps_mode| for last-minute adjustments +extra_eps_setup=""; % usually there's nothing special to do +string extra_preamble, extra_postamble; % for special comments and/or defs +extra_preamble=extra_postamble=""; % usually there's nothing special to add +% We follow the naming convention of The \MF{}book: +% ``Private tokens always end with the underscore character.'' +% Since the underscore is a rather illegible character, in a ``neat'' +% printing (using MFT utility) it will appear as an superscript asterisk. +%% % an innocent formatting trick: the underscore character ending a name +%% % will be typeset as an superscript asterisk +%% \let\oriunderscore\_ +%% \newif\ifbgroupopen \bgroupopenfalse +%% \def\altdblbackslash#1{\bgroup\bgroupopentrue\it#1} +%% \def\optegroup{\ifbgroupopen\egroup\fi} +%% \def\underscoreasasterisk#1{% +%% \ifx#1\relax\optegroup^*\else\oriunderscore#1\fi} +%% \def\\#1{% +%% \let\_\underscoreasasterisk +%% \altdblbackslash{#1\relax}\optegroup +%% \let\_\oriunderscore} +% --- +def make_list(expr k,l) suffix s = + for i_:=k upto l: if i_>k: , fi \\ s[i_] endfor +enddef; +% --- +vardef distance(expr za,zb) = length(za-zb) enddef; % in fact, an alias +% --- +vardef pos_turn primary p = + interim autorounding:=0; + if check_turn(p)=0: show p; + errhelp "I will leave the path intact, continue with crossed fingers."; + errmessage "Cannot make positive turn (check_turn=0)"; + elseif check_turn(p)<0: reverse fi \\ p +enddef; +% --- +vardef neg_turn primary p = + interim autorounding:=0; + if check_turn(p)=0: show p; + errhelp "I will leave the path intact, continue with crossed fingers."; + errmessage "Cannot make negative turn (check_turn=0)"; + elseif check_turn(p)>0: reverse fi \\ p +enddef; +% --- +vardef check_turn primary p = % seems more adequate than |turningnumber| +% |epsilon|=|totalweight currentpicture| after |fill unitsquare|, +% |eps/epsilon=32|, i.e., we admit accuracy of 32 pixels (isn't it too many?) + save r_,currentpicture; picture currentpicture; + interim turningcheck:=0; interim autorounding:=0; + currentpicture:=nullpicture; fill p; r_:=totalweight(currentpicture); + if r_>eps: 1 elseif r_<-eps: -1 else: turningnumber(p) fi +enddef; +% --- +vardef is_line(expr B) = +% checks if a B\'ezier segment |B| is an almost straight line; +% recall that |z reflectedabout (origin,right)=1/z| for a complex +% number |z| such that |length(z)=1|; recall also that the multiplication +% of complex numbers (|zscale| operation) implies the addition of +% their angle arguments + save pa_,pb_,pc_,pd_,ba_,da_,dc_; pair pa_,pb_,pc_,pd_,ba_,da_,dc_; + pa_:=point 0 of B; pd_:=point 1 of B; + if distance(pa_,pd_)<epsil.dist: + false % either really not a line or an uncertain situation (rounding errors) + else: + da_=unitvector(pd_-pa_) reflectedabout (origin,right); + pb_:=postcontrol 0 of B; if distance(pa_,pb_)<epsil.dist: pb_:=pa_; fi + pc_:=precontrol 1 of B; if distance(pd_,pc_)<epsil.dist: pc_:=pd_; fi + if (pa_=pb_) and (pc_=pd_): true + elseif (pa_=pb_): + dc_=unitvector(pd_-pc_); abs(angle(dc_ zscaled da_))<epsil.ang + elseif (pc_=pd_): + ba_=unitvector(pb_-pa_); abs(angle(ba_ zscaled da_))<epsil.ang + else: + ba_=unitvector(pb_-pa_); dc_=unitvector(pd_-pc_); + (abs(angle(ba_ zscaled da_))<epsil.ang) + and (abs(angle(dc_ zscaled da_))<epsil.ang) + fi + fi +enddef; +% --- +def eofill expr P = + begingroup save pp_; picture pp_; + interim turningcheck:=0; +% the following |addto|s are supposed to fill disjoint areas: + pp_:=nullpicture; addto pp_ contour P.t_; + cull pp_ keeping (1,infinity); addto currentpicture also pp_; + pp_:=nullpicture; addto pp_ contour reverse P.t_; + cull pp_ keeping (1,infinity); addto currentpicture also pp_; + cull currentpicture keeping(1,1); + endgroup +enddef; +% --- +def normal_write_PS expr s = if s<>"": message ":PS: " & s; fi enddef; +% --- +def write_P (expr op,P) = +% writes a point |P| in PostScript, followed by the operation |op| + write_PS bp_pair(P) & op; +enddef; +% --- +def write_B (expr op,B) = +% writes a B\'ezier segment |B| in PostScript, followed by the operation |op| + write_PS bp_pair(postcontrol 0 of B) & bp_pair(precontrol 1 of B) & + bp_pair(point 1 of B) & op; +enddef; +% --- +def write_L (expr op,L) = +% writes a line |L| in PostScript, followed by the operation |op| + write_PS bp_pair(point 1 of L) & op; +enddef; +% --- +vardef write_C (expr C) = +% writes a B\'ezier curve |C| in PostScript followed by an operation +% which depends on whether |C| is cyclic or not + save ll_; + ll_:= % |(length(C)-ll_,length(C)-ll_+1)| is the last segment processed + if (cycle C) and ((point length(C) of C) = (point length(C)-1 of C)): + 2 % artificial situation related to an old EPS2MF converter + else: 1 fi; + write_P(move_op,point 0 of C); + for tt_:=0 upto length(C)-ll_: + if is_line(subpath (tt_,tt_+1) of C): + write_L(line_op,subpath (tt_,tt_+1) of C); + else: + write_B(bezi_op,subpath (tt_,tt_+1) of C); + fi + endfor + if cycle C: write_PS close_op; fi +enddef; +% --- +def no_export_fill_C text t = + begingroup + save rr_; picture rr_; % must not be |pp_| (see |eofill|) + begingroup + save currentpicture; def currentpicture = rr_ enddef; % danger! + currentpicture:=nullpicture; for qq_:=t: eofill qq_; endfor + endgroup; + addto currentpicture also rr_; cullit; + endgroup +enddef; +% --- +def normal_fill_C text t = + write_PS beg_path_op; + set_fill_cmyk; + for pp_:=t: + write_C(pp_); write_PS mid_fill_op; closed_path:=false; + endfor + write_PS end_path_op; +enddef; +% --- +def no_export_draw_C text t = for pp_:=t: draw pp_; endfor enddef; +% --- +def normal_draw_C text t = + write_PS beg_path_op; + set_draw_cmyk; set_line_width; + set_line_join; set_line_cap; + set_miter_limit; set_dash; + for pp_:=t: + write_C(pp_); write_PS mid_draw_op; closed_path:=false; + endfor + write_PS end_path_op; +enddef; +% --- +def normal_clip_C text t = + clipping_count:=0; % local + for pp_:=t: clipping_count:=clipping_count+1; endfor + if clipping_count=0: + if clipping_level>0: g_restore; clipping_level:=clipping_level-1; fi + else: + clipping_level:=clipping_level+1; g_save; + write_PS beg_path_op; + for pp_:=t: write_C(pp_); write_PS mid_clip_op; endfor + write_PS end_path_op; + fi +enddef; +% --- +vardef update_BC(expr C)(suffix xl,yl,xh,yh) = +% updates variables |xl|, |yl|, |xh|, |yh| by finding extremal points +% of a B\'ezier curve |C| + if xl>xpart(point 0 of C): xl:=xpart(point 0 of C); fi + if xh<xpart(point 0 of C): xh:=xpart(point 0 of C); fi + if yl>ypart(point 0 of C): yl:=ypart(point 0 of C); fi + if yh<ypart(point 0 of C): yh:=ypart(point 0 of C); fi + for tt_:=0 upto length(C)-1: + update_BB(subpath (tt_,tt_+1) of C,xl,yl,xh,yh); + endfor +enddef; +% --- +vardef update_BB(expr B) (suffix xl,yl,xh,yh) = +% updates variables |xl|, |yl|, |xh|, |yh| by finding extremal points +% of a B\'ezier segment |B|; the |point 0 of B| is not taken into account + save Bx_,By_,ta_,tb_,vv_; path Bx_, By_; numeric ta_,tb_,vv_; +% + Bx_=(0,xpart(point 0 of B)) + ..controls + (0,xpart(postcontrol 0 of B)) and (1000,xpart(precontrol 1 of B)) + ..(1000,xpart(point 1 of B)); + By_=(0,ypart(point 0 of B)) + ..controls + (0,ypart(postcontrol 0 of B)) and (1000,ypart(precontrol 1 of B)) + ..(1000,ypart(point 1 of B)); +% + ta_:=directiontime right of Bx_; + if ta_>0: + vv_:=ypart (point ta_ of Bx_); + if vv_<xl: xl:=vv_; fi\\ if vv_>xh: xh:=vv_; fi + tb_:=directiontime right of subpath (ta_+eps,1) of Bx_; + if tb_>=0: + vv_:=ypart (point tb_ of (subpath (ta_+eps,1) of Bx_)); + if vv_<xl: xl:=vv_; fi\\ if vv_>xh: xh:=vv_; fi + fi + fi + vv_:=ypart (point 1 of Bx_); if vv_<xl: xl:=vv_; fi\\ if vv_>xh: xh:=vv_; fi +% + ta_:=directiontime right of By_; + if ta_>0: + vv_:=ypart (point ta_ of By_); + if vv_<yl: yl:=vv_; fi\\ if vv_>yh: yh:=vv_; fi + tb_:=directiontime right of subpath (ta_+eps,1) of By_; + if tb_>=0: + vv_:=ypart (point tb_ of (subpath (ta_+eps,1) of By_)); + if vv_<yl: yl:=vv_; fi\\ if vv_>yh: yh:=vv_; fi + fi + fi + vv_:=ypart (point 1 of By_); if vv_<yl: yl:=vv_; fi\\ if vv_>yh: yh:=vv_; fi +enddef; +% --- +% |xl|, |yl|, |xh|, and |yh| can likely be used in a program, hence +% longer names: |xl_crd|, |yl_crd|, |xh_crd|, and |yh_crd|, respectively +def reset_BB = + xl_crd:=whatever; yl_crd:=whatever; xh_crd:=whatever; yh_crd:=whatever; +enddef; +% --- +def find_BB text t = + for CC_:=t: % |t| may be empty + if unknown xl_crd: xl_crd=yl_crd=-xh_crd=-yh_crd=infinity; fi + update_BC(CC_)(xl_crd,yl_crd,xh_crd,yh_crd); + endfor +enddef; +% --- +vardef llxy = (xl_crd,yl_crd) enddef; +vardef urxy = (xh_crd,yh_crd) enddef; +% --- +def set_BB text t = +% it may happen that |t| refers to the previously fixed coordinates of the +% bounding box, therefore the coordinates should not be changed too early + numeric xl_crd_, yl_crd_, xh_crd_, yh_crd_; + for rr_:=t: % syntax trick + if pair rr_: + for ss_:=xpart rr_, ypart rr_: + if unknown xl_crd_: xl_crd_:=ss_; + elseif unknown yl_crd_: yl_crd_:=ss_; + elseif unknown xh_crd_: xh_crd_:=ss_; + elseif unknown yh_crd_: yh_crd_:=ss_; + fi + endfor + else: + if unknown xl_crd_: xl_crd_:=rr_; + elseif unknown yl_crd_: yl_crd_:=rr_; + elseif unknown xh_crd_: xh_crd_:=rr_; + elseif unknown yh_crd_: yh_crd_:=rr_; + fi + fi + endfor + numeric xl_crd, yl_crd, xh_crd, yh_crd; + xl_crd:=xl_crd_; yl_crd:=yl_crd_; xh_crd:=xh_crd_; yh_crd:=yh_crd_; +enddef; +% --- +% somewhat unusual formula was employed in the definition of |bp_num| +% because |(72/300)*x| is not equivalent to |72/300x|: the latter yields +% better accuracy +vardef bp_num primary x = + decimal(scantokens("72/" & decimal(pixels_per_inch))x) +enddef; +vardef bp_pair primary z = + bp_num(xpart(z)) & " " & bp_num(ypart(z)) & " " +enddef; +% --- +mode_def eps_mode = + proofing:=0; % no, we're not making proofs + fontmaking:=0; % no, we're not making a TFM file + tracingtitles:=1; % yes, show titles online + pixels_per_inch:=300; % standard laser printer resolution + blacker:=0; % no additional blackness + fillin:=0; % no compensation for fillin + o_correction:=1; % no reduction in overshoot + mag:=1; % standard magnification + autorounding:=0; % removing pimples is unimportant + scantokens extra_eps_setup; % the user's special last-minute adjustments +enddef; +% --- +mode_def vicar_mode = + proofing:=0; % no, we're not making proofs + fontmaking:=0; % no, we're not making a TFM file + tracingtitles:=1; % yes, show titles online + pixels_per_inch:=300; % standard laser printer resolution + blacker:=0; % no additional blackness + fillin:=0; % no compensation for fillin + o_correction:=1; % no reduction in overshoot + mag:=1; % standard magnification +enddef; +% --- +def EPS_mode_setup = eps_mode_setup enddef; % an alias (upward compatibility) +def eps_mode_setup suffix e_l = +% fixing |export_level|: + known_yes_eps:=(known yesEPS) or (known YESEPS) or (known yeseps); + if not known_yes_eps: export_level:=no_export_level; + elseif str e_l="": export_level:=compatibility_level; + else: + if + (if known e_l: + (e_l=no_export_level) or (e_l=compatibility_level) + else: + false + fi): + export_level:=e_l; + else: + message "Default export level assumed."; + export_level:=compatibility_level; + fi + fi +% |mode_setup| hackery (last chance to abandon exporting): + if export_level<>no_export_level: + if not (string mode): mode:=vicar_mode; fi % for hackers only + mode_setup; % trial setup + if proofing>0: export_level:=no_export_level; fi % proofing has priority + fi +% now either |export_level=no_export_level| +% or |export_level=compatibility_level): + if export_level=no_export_level: + let mode_setup=ori_mode_setup; mode_setup; + let endchar=ori_endchar; + let write_PS=killtext; + let write_preamble=no_export_write_preamble; + let write_postamble=no_export_write_postamble; + let fill_C=no_export_fill_C; + let draw_C=no_export_draw_C; + let clip_C=killtext; + else: % |error_level=compatibility_level| + if not (string mode): mode:=eps_mode; fi % for hackers only + mode_setup; % set private mode + let mode_setup=relax; % no more |mode_setup|s + def endchar = % no shipping characters out + scantokens extra_endchar; endgroup + enddef; + let write_PS=normal_write_PS; + let write_preamble=normal_write_preamble; + let write_postamble=normal_write_postamble; + let fill_C=normal_fill_C; + let draw_C=normal_draw_C; + let clip_C=normal_clip_C; + fi +enddef; +% --- +def plain_new_path_op = "newpath" enddef; +def plain_close_op = "closepath" enddef; +def plain_move_op = "moveto" enddef; +def plain_line_op = "lineto" enddef; +def plain_bezi_op = "curveto" enddef; +def plain_fill_op = "eofill" enddef; +def plain_draw_op = "stroke" enddef; +def plain_clip_op = "eoclip" enddef; +def plain_set_line_width_op = "setlinewidth" enddef; +def plain_set_fill_cmyk_op = "setcmykcolor" enddef; +def plain_set_draw_cmyk_op = "setcmykcolor" enddef; +def plain_set_line_join_op = "setlinejoin" enddef; +def plain_set_line_cap_op = "setlinecap" enddef; +def plain_set_miter_limit_op = "setmiterlimit" enddef; +def plain_set_dash_op = "setdash" enddef; +def plain_g_save_op = "gsave" enddef; +def plain_g_restore_op = "grestore" enddef; +% --- +% there is some inconsistency between Corel and AI (it could be said that +% even between Corel and Corel, and between AI and AI), therefore the code +% for filling, drawing and clipping operations is somewhat messy... +% --- +def close_op = begingroup closed_path:=true; "" endgroup enddef; +def close_path_op = "h" enddef; +def move_op = "m" enddef; +def line_op = "l" enddef; +def bezi_op = "c" enddef; +def beg_path_op = "*u" enddef; +def end_path_op = "*U" enddef; +let beg_fill_op=beg_path_op; +def mid_fill_op = "f" enddef; +def end_fill_op = "*U*f" enddef; +let beg_draw_op=beg_path_op; +def mid_draw_op = if closed_path: "s" else: "S" fi enddef; +def end_draw_op = "*U*d" enddef; +let beg_clip_op=beg_path_op; +def prep_clip_op = "W" enddef; % AI-oriented, here just empty +def do_clip_op = "n" enddef; +def mid_clip_op = + close_path_op & " " & prep_clip_op & " " & do_clip_op +enddef; +def end_clip_op = "*U*c" enddef; +def set_line_width_op = "w" enddef; +def set_fill_cmyk_op = "k" enddef; +def set_draw_cmyk_op = "K" enddef; +def set_line_join_op = "j" enddef; +def set_line_cap_op = "J" enddef; +def set_miter_limit_op = "M" enddef; +def set_dash_op = "d" enddef; +def g_save_op = "q" enddef; +def g_restore_op = "Q" enddef; +% --- +def mark_null = "/oper_kind -1 def" enddef; +def mark_fill = "/oper_kind 0 def" enddef; +def mark_draw = "/oper_kind 1 def" enddef; +def mark_clip = "/oper_kind 2 def" enddef; +def check_fill = "0 oper_kind eq" enddef; +def check_draw = "1 oper_kind eq" enddef; +def check_clip = "2 oper_kind eq" enddef; +% --- +def write_def(expr p,q) = + if p<>"": write_PS "/" & p & " {" & q & "} def"; fi +enddef; +% --- +def no_export_write_preamble expr s = pickup pencircle scaled 0.4pt; enddef; +def normal_write_preamble expr s = + message "generating " & s & ".eps"; + if unknown testing: + batchmode; % don't write mess to the terminal + fi + message ":EPS FILE NAME: " & s; + write_PS "%!PS-Adobe-2.0 EPSF-2.0"; + write_PS "%%Creator: MFTOEPS ver. " & mftoeps_ver; + if (known xl_crd) and (known yl_crd) and (known xh_crd) and (known yh_crd): + write_PS "%%BoundingBox: " & bp_num(xl_crd) & " " & bp_num(yl_crd) + & " " & bp_num(xh_crd) & " " & bp_num(yh_crd); + else: + xl_crd:=0; xh_crd:=72bp; yl_crd:=0; yh_crd:=72bp; + if unknown testing: + errorstopmode; % switch temporarily to the usual mode + fi + message "Unknown bounding box (0 0 72 72 assumed)"; + if unknown testing: + batchmode; % again don't write mess to the terminal + fi + write_PS "%%BoundingBox: 0 0 72 72"; + fi + write_PS "%%Title: " & s & ".eps"; + write_PS "%%CreationDate: " & decimal(day) & "." if month<10: & "0" fi + & decimal(month) & "." & decimal(year) & " " & decimal(time div 60) + & ":" if (time mod 60)<10: & "0" fi & decimal(time mod 60); + write_PS "%%DocumentStyle: compatibility " + & "(CorelDRAW! & Adobe Illustrator oriented)"; + write_PS "%%DocumentFonts:"; + write_PS "%%EndComments"; + write_PS "%%BeginProlog"; + write_PS "/mftoeps_export 100 dict def % you may wish to add some entries"; + write_PS "mftoeps_export begin"; + write_def (close_op,plain_close_op); + write_def (close_path_op,plain_close_op); + write_def (move_op,plain_move_op); + write_def (bezi_op,plain_bezi_op); + write_def (line_op,plain_line_op); + write_def (set_fill_cmyk_op,plain_set_fill_cmyk_op); + write_def (set_draw_cmyk_op,plain_set_draw_cmyk_op); + write_def (beg_path_op,mark_null); + write_def (end_path_op, + end_fill_op & " " & end_draw_op & " " & end_clip_op); + write_def (mid_fill_op,mark_fill); + write_def (end_fill_op,check_fill & " {" & plain_fill_op & "} if") + closed_path:=true; + write_def (mid_draw_op, plain_close_op & " " & mark_draw); + closed_path:=false; + write_def (mid_draw_op, mark_draw); + write_def (end_draw_op,check_draw & " {" & plain_draw_op & "} if") + write_def (prep_clip_op,""); + write_def (do_clip_op, mark_clip); + write_def (end_clip_op,check_clip & + " {" & plain_clip_op & " " & plain_new_path_op & "} if"); + write_def (set_line_width_op,plain_set_line_width_op); + write_def (set_line_join_op,plain_set_line_join_op); + write_def (set_line_cap_op,plain_set_line_cap_op); + write_def (set_miter_limit_op,plain_set_miter_limit_op); + write_def (set_dash_op,plain_set_dash_op); + write_PS "/setcmykcolor where {pop}"; + write_PS " {/setcmykcolor {1 sub /mf exch def"; + write_PS " 3 {mf add neg dup 0 lt {pop 0} if 3 1 roll} repeat"; + write_PS " setrgbcolor} def} ifelse"; + write_def (g_save_op,plain_g_save_op); + write_def (g_restore_op,plain_g_restore_op); + write_PS "/mftoeps_bhook where {pop mftoeps_bhook} {} ifelse"; + scantokens extra_preamble; + write_PS "%%EndProlog"; + write_PS "%%BeginSetup"; % important structural comment + write_PS "%%EndSetup"; % ditto + g_save; + fix_line_width 0.4pt; + fix_fill_cmyk 0,0,0,1; + fix_draw_cmyk 0,0,0,1; + fix_line_join default_line_join; + fix_line_cap default_line_cap; + fix_miter_limit default_miter_limit; + clipping_level:=0; + fix_dash () 0; +enddef; +% --- +def no_export_write_postamble = reset_BB; enddef; +def normal_write_postamble = + forever: exitif clipping_level=0; clip_C; endfor + g_restore; + write_PS "%%Trailer"; + write_PS "/mftoeps_ehook where {pop mftoeps_ehook} {} ifelse"; + scantokens extra_postamble; + write_PS "end showpage"; + if unknown testing: + errorstopmode; % switch to the usual mode + fi + message ""; + reset_BB; +enddef; +% --- +def g_save = write_PS g_save_op enddef; +def g_restore = write_PS g_restore_op enddef; +% --- +def fix_dash (text t) expr x = + def current_dash_array = t enddef; current_dash_offset:=x; +enddef; +def set_dash = + dash_array_empty:=true; + write_PS "[" + for dash_array:=current_dash_array: if not dash_array_empty: & " " fi + & hide(dash_array_empty:=false) bp_num(dash_array) + endfor + & "] " & bp_num(current_dash_offset) & " " & set_dash_op; +enddef; +% --- +def fix_line_width expr p = + current_line_width:=max(p,0); pickup pencircle scaled current_line_width; +enddef; +def set_line_width = + write_PS bp_num(if known current_line_width: current_line_width + else: .5[pen_rt-pen_lft,pen_top-pen_bot] fi) & " " & set_line_width_op; +enddef; +% --- +def fix_line_join expr p = + current_line_join:= + if (round(p)<0) or (round(p)>2): default_line_join else: round(p) fi; +enddef; +def set_line_join = + write_PS decimal(if known current_line_join: current_line_join + else: default_line_join fi) & " " & set_line_join_op; +enddef; +% --- +def fix_line_cap expr p = + current_line_cap:= + if (round(p)<0) or (round(p)>2): default_line_cap else: round(p) fi; +enddef; +def set_line_cap = + write_PS decimal(if known current_line_cap: current_line_cap + else: default_line_cap fi) & " " & set_line_cap_op; +enddef; +% --- +def fix_miter_limit expr p = + current_miter_limit:=if p<1: default_miter_limit else: p fi; +enddef; +def set_miter_limit = + write_PS decimal(if known current_miter_limit: current_miter_limit + else: default_miter_limit fi) & " " & set_miter_limit_op; +enddef; +% --- +def set_fill_cmyk = + write_PS decimal(fill_cyan) & " " & decimal(fill_magenta) & + " " & decimal(fill_yellow) & " " & decimal(fill_black) & " " & + set_fill_cmyk_op; +enddef; +def set_draw_cmyk = + write_PS decimal(draw_cyan) & " " & decimal(draw_magenta) & + " " & decimal(draw_yellow) & " " & decimal(draw_black) & " " & + set_draw_cmyk_op; +enddef; +% --- +vardef norm_color expr c = min(1,max(0,c)) enddef; +def fix_fill_cmyk text t = % syntax trick + fill_cyan:=whatever; fill_magenta:=whatever; + fill_yellow:=whatever; fill_black:=whatever; + for vv_:=t: + if unknown fill_cyan: fill_cyan:=norm_color vv_; + elseif unknown fill_magenta: fill_magenta:=norm_color vv_; + elseif unknown fill_yellow: fill_yellow:=norm_color vv_; + elseif unknown fill_black: fill_black:=norm_color vv_; + fi + endfor +enddef; +def fix_draw_cmyk text t = % syntax trick + draw_cyan:=whatever; draw_magenta:=whatever; + draw_yellow:=whatever; draw_black:=whatever; + for vv_:=t: + if unknown draw_cyan: draw_cyan:=norm_color vv_; + elseif unknown draw_magenta: draw_magenta:=norm_color vv_; + elseif unknown draw_yellow: draw_yellow:=norm_color vv_; + elseif unknown draw_black: draw_black:=norm_color vv_; + fi + endfor +enddef; +% --- +def fix_fill_rgb text t = % syntax trick + begingroup + save R_,G_,B_; + for vv_:=t: + if unknown R_: R_:=norm_color vv_; + elseif unknown G_: G_:=norm_color vv_; + elseif unknown B_: B_:=norm_color vv_; + fi + endfor + convert_rgb_to_cmyk(R_,G_,B_) + (fill_cyan, fill_magenta, fill_yellow, fill_black); + endgroup +enddef; +def fix_draw_rgb text t = % syntax trick + begingroup + save R_,G_,B_; + for vv_:=t: + if unknown R_: R_:=norm_color vv_; + elseif unknown G_: G_:=norm_color vv_; + elseif unknown B_: B_:=norm_color vv_; + fi + endfor + convert_rgb_to_cmyk(R_,G_,B_) + (draw_cyan, draw_magenta, draw_yellow, draw_black); + endgroup +enddef; +% --- +def convert_rgb_to_cmyk (expr R,G,B)(suffix C,M,Y,K) = + begingroup + save C_,M_,Y_,K_; C_:=1-R; M_:=1-G; Y_:=1-B; K_:=min(C_,M_,Y_); + C:=min(1, max(0,C_-under_color_removal(K_))); + M:=min(1, max(0,M_-under_color_removal(K_))); + Y:=min(1, max(0,Y_-under_color_removal(K_))); + K:=min(1, max(0,black_generation(K_))); + endgroup +enddef; +% --- +% DEFAULTS: +def mftoeps_default text t = % main global defaults + forsuffixes S_:=t: + if str S_ = "under_color_removal": + vardef under_color_removal(expr k) = 0 enddef; % modify if you know better + elseif str S_ = "black_generation": + vardef black_generation(expr k) = 0 enddef; % ditto + elseif str S_ = "default_miter_limit": + default_miter_limit:=10; % as in PostScript +% incidentally, |10bp| would convert to |10.00002| during export at |300dpi| + elseif str S_ = "default_line_join": default_line_join:=0; % as in PostScript + elseif str S_ = "default_line_cap": default_line_cap:=0; % ditto + elseif str S_ = "epsil.ang": epsil.ang:=.1; % in degrees + elseif str S_ = "epsil.dist": epsil.dist:=1/10pt; % ca |2/5|pxl at |300dpi| + fi + endfor +enddef; +% +mftoeps_default under_color_removal, black_generation, default_miter_limit, + default_line_join, default_line_cap, epsil.ang, epsil.dist; +% --- +endinput; +%%\end |