Changes

= "Empty" or Transparent letters =

 %------------------------------------------------------------------------------   picture tt ; tt := lmt_outline [ kind = "fillup", text = "\definedfont[name:texgyrepagellabold*default]% \framed[frame=off,offset=3mm,align=middle,strut=none]

] xsized 12cm ;  path bb ; bb := boundingbox tt; %------------------------------------------------------------------------------   path pp ; pp := bb enlarged 2cm ; fill pp withshademethod "linear"

withshadecolors (\MPcolor{ColorHighA}, \MPcolor{ColorHighB}); %------------------------------------------------------------------------------   picture Paddmissing; Paddmissing := nullpicture; picture Pwoletters; Pwoletters := nullpicture; numeric testwithin ;  %------------------------------------------------------------------------------   for i within tt : if stroked i or filled i : testwithin :=0;  for j within tt : if stroked j or filled j: if (((xpart llcorner i) > (xpart llcorner j)) and ((ypart llcorner i) > (ypart llcorner j)) and ((xpart urcorner i) < (xpart urcorner j)) and ((ypart urcorner i) < (ypart urcorner j))) : testwithin :=1; fi; fi; endfor;  if testwithin == 1: addto Paddmissing contour (pathpart i) withcolor \MPcolor{ColorLow}; else: addto Pwoletters contour ( nofill pathpart i) withpostscript "collect"; fi;   fi ; endfor ; %------------------------------------------------------------------------------ addto Pwoletters contour eofill bb withpostscript withcolor "evenoddgray" withcolor \MPcolor{ColorLow}; draw Pwoletters ; draw Paddmissing ; \stopMPpage