% pltSetB.m
 %              11 Sept 2004
 function pltSetB(vrt, TB, ttl)
 for k = 1:4
   Trb =  TB(:,k) ;
   Tr = reshape((Trb+1)/2, 29, 3) ;
   xx = pow2(6:-1:-1)*Tr(1:8,:) ;   
   yy = pow2(6:-1:-1)*Tr((1:8)+8,:) ;
   zt = xx+j*yy  ;
   fi = pow2(6:-1:0)*Tr((1:7)+2*8,:) ; 
   rot = exp(j*pi*(90-fi)/180) ;
   r = [2 1]*Tr((1:2)+23,:) ;
   g = [2 1]*Tr((1:2)+25,:) ;
   b = [2 1]*Tr((1:2)+27,:) ;
   cc = [r ; g ; b]/3 ;
   % rotation and translation of three tiangles  vrt
   z = vrt.*rot([1 1 1],:) + zt([1 1 1],:) ;
   X = real(z) ; Y = imag(z) ;
   subplot(2,2,k)
   fill(X(:,1), Y(:,1), cc(1,:), ...
        X(:,2), Y(:,2), cc(2,:), ...
        X(:,3), Y(:,3), cc(3,:))
   axis([0 80 0 80]), axis equal, grid on
   if k ==1, title(ttl), end
 end