%%%%
%%%% 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
% RO-05.MF, ``GERBERA'':
%  Non-standard application of removing overlaps; areas covered a specified
%  number of times are collected separately using the macro |recombine_edges|
%  (performing the last step of removing overlaps), and each area is painted
%  with a different colour, yielding a gerbera-like form.
% ---
input mftoeps; eps_mode_setup; input roex; tracingremoving:=1;
% ---
beginchar("0",in#,in#,0);
 path R[\\],V[\\][\\];
 N:=9;
 R.num:=0;
 R[incr R.num]=fullcircle xscaled 1/5w yscaled h shifted (1/2w,1/2h);
 for i:=1 upto N-1:
  R[incr R.num]=R[R.num-1] rotatedaround((0.5w,.5h), 180/N);
 endfor
%
 remove_overlap (make_list(1,R.num)R)() R; % dummy result
 col.min:=infinity; col.max:=-infinity;
 for i:=-EDGE_.num upto EDGE_.num : if i<>0:
  col.min:=min(EDGE_.col[i],col.min);
  col.max:=max(EDGE_.col[i],col.max);
 fi endfor;
 col.min:=max(1,col.min);
 for k:=col.min upto col.max:
  vardef good_colors(expr i,j) = (i=k) enddef;
  message "recombine_edges: color=" & decimal(k); recombine_edges(V[k]);
 endfor;
 set_BB 0,0,w,h; write_preamble jobname;
 for k:=col.min upto col.max:
  if V[k]num>0:
   fix_fill_cmyk 0,3/4((((k-col.min)/(col.max-col.min))**1/2)[1,0]),1,0;
   fill_C make_list(1,V[k]num)V[k];
  fi
 endfor
 write_postamble;
endchar;
end.
%%\end