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%%%%
%%%% This file belongs to the ROEX package.
%%%%
%%% draw write_preamble write_postamble find_BB set_BB fill_C draw_C
%%% draw fix_fill_cmyk fix_draw_cmyk roex_default
% RO-04.MF, ``EOFILL'':
% Removing overlaps performed in two stages: first stage removes overlaps
% using even-odd filling rule, the second stage restores default meanings
% of |good_colors| and |touch_path| and performs ``traditional'' removing
% overlaps on the result of stage 1 and a positively oriented rectangle.
% ---
input mftoeps; eps_mode_setup; input roex; tracingremoving:=1;
% ---
beginchar("0",in#,in#,0);
path A,B,C,D,E,F;
A=fullcircle scaled 1w shifted (1/2w,1/2h);
B=fullcircle scaled 4/5w shifted (1/2w,1/2h);
C=fullcircle scaled 3/5w shifted (1/2w,1/2h);
D=fullcircle scaled 2/5w shifted (1/2w,1/2h);
E=unitsquare xscaled 1/5w yscaled 9/10h shifted (2/5w,1/20h);
F=unitsquare xscaled 7/5w yscaled 1/5h shifted (-1/5w,2/5h);
%
% STAGE 1: remove overlaps for |A|, |B|, |C|, |D| and |E| using
% the `eofill' rule (the re-definition of |touch_path| is superfluous here,
% but recommended in a general case):
vardef good_colors(expr i,o) = odd(i) and odd(o+1) enddef;
vardef touch_path(expr p) = pos_turn(p) enddef;
remove_overlap (A,B,C,D,E) () R;
% STAGE 2: remove overlaps for |F| and the paths resulting from the stage 1:
roex_default good_colors, touch_path;
remove_overlap (F,make_list(1,R.num) R) () R;
%
find_BB make_list(1,R.num) R;
write_preamble jobname;
fix_fill_cmyk 0,0,0,1/10;
fill_C make_list(1,R.num) R;
for i:=1 upto R.num:
fix_draw_cmyk if check_turn(R[i])>0: 0,1,1,0 else: 1,1,0,0 fi;
draw_C R[i];
if proofing>0:
for j:=0 upto length(R[i])-1:
makelabel(decimal(j) & "/" & decimal(i),point j of R[i]);
endfor
fi
endfor;
write_postamble;
endchar;
end.
%%\end
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