% Length has been changed to longueur for BCPL_string
% Nicolas Brouard 25/10/91
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                                                             %
%                   BALKEN                                    %
%                                                             %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
font_x_height beamht#;

def drawbeams (expr st, jj, nn) =
    save i, j, longueur, height;
    numeric i, j, longueur, height;
    longueur:= 60.0/32;
    for i=0 upto 5:
        height := longueur*st ;
        beginchar(jj*6+i, longueur, height, 0);
           clear;
           z2 = (w,h);
           z1 = origin;
           penpos1(beamht,90);
           penpos2(beamht,90);
           for j=0 upto nn-1:
             penstroke (z1e---z2e) shifted (0,beamstep*j);
           endfor;
         endchar;
         longueur :=  2*longueur;
    endfor;
enddef;

def drawbeamsneg (expr st, jj, nn) =
    save i, longueur, depth;
    numeric i, longueur, depth;
    longueur:= 60.0/32;
    for i=0 upto 5:
        depth := longueur*st;
        beginchar(64+jj*6+i, longueur, 0, depth);
           clear;
           z2 = (w,d);
           z1 = origin;
           penpos1(beamht,90);
           penpos2(beamht,90);
           for j=0 upto nn-1:
             penstroke (z1e---z2e) shifted (0,beamstep*j);
           endfor;
         endchar;
         longueur :=  2*longueur;
    endfor;
enddef;
numeric beamstep;
numeric ss[];

beamstep:=0.75nhh;
ss[0]:=0.05;
ss[1]:=0.10;
ss[2]:=0.15;
ss[3]:=0.20;
ss[4]:=0.25;
ss[5]:=0.30;
ss[6]:=0.35;
ss[7]:=0.4;
ss[8]:=0.45;
ss[9]:=0.50;
ss[10]:=0.55;


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Balken mit positiver Steigung %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

for j=0 upto 9 :
drawbeams(ss[j],j,beammult);
endfor;


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Balken mit negativer Steigung %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

for j=0 upto 9 :
drawbeamsneg(-ss[j],j,beammult);
endfor;

end;