%%%%
%%%% This file belongs to the ROEX package.
%%%%
%%% draw write_preamble write_postamble find_BB set_BB fill_C clip_C
%%% draw fix_fill_cmyk fix_draw_cmyk
% ROES-03.MF, ``OLYMPIC CIRCLES'':
%  Yet another example making use of both expanding stroke and removing
%  overlaps; it also demonstrates repositioning of the picture in such
%  a way that the lower left corner of the bounding box coincides with
%  the origin of coordinate system.
input mftoeps; eps_mode_setup; input roex;
tracingremoving:=1; tracingexpanding:=1;
% ---
beginchar("0",in#,in#,0); % temporary values
 path A[];
 for i:=1,2,3,4,5:
  A[i]:=fullcircle scaled w shifted
   (floor(i/4)*(1/2sqrt(3)*w,0)+1/2w*(up rotated (120i+60)));
 endfor
 expand_stroke (A1,A2,A3,A4,A5) (.5mm) R;
 remove_overlap (make_list(1,R.num)R) () R;
% setting of intermediate colors:
 k:=0; % the number of intermediate colors
 C[incr k]=0; M[k]=1; Y[k]=1; K[k]:=0;
 C[incr k]=0; M[k]=0; Y[k]=1; K[k]:=0;
 C[incr k]=0.25; M[k]=0; Y[k]=0.75; K[k]:=0;
 C[incr k]=1; M[k]=0.5; Y[k]=0; K[k]:=0;
 C[incr k]=0.3; M[k]=1; Y[k]=0; K[k]:=0;
 l:=30; % the number of interpolation steps
 m=l*(k-1); % the number of strips
 find_BB make_list(1,R.num)R;
% repositioning of the picture:
 for i:=1 upto R.num: R[i]:=R[i] shifted -llxy; endfor
 m*w'=xh_crd:=xh_crd-xl_crd; xl_crd:=0;
 h'=yh_crd:=yh_crd-yl_crd; yl_crd:=0;
% exporting:
 write_preamble jobname;
 clip_C make_list(1,R.num)R;
 n:=0;
 for i:=1 upto k-1: for j:=0 upto l-1:
  n:=n+1;
  fix_fill_cmyk
   forsuffixes $=C,M,Y,K: (j/(l-1))[$[i],$[i+1]] if str$ <> "K": , fi endfor;
  fill_C unitsquare xscaled 11/10w' yscaled h' shifted ((n-1)*w'-1/20w',0);
 endfor endfor
 write_postamble;
endchar;
end.
%%\end