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autorounding := 1 ;
mode_setup;
define_pixels(em,asc,desc,ex);
define_blacker_pixels(penwidth,penthickness) ;
define_blacker_pixels(tehta_penwidth) ;
define_corrected_pixels(o);
define_whole_pixels(straight_sidebar,curve_sidebar) ;
define_pixels(fudge, tinco_width, parma_width, romen_width) ;
define_pixels(luva_width) ;
pickup pencircle xscaled penwidth yscaled penthickness rotated penangle;
main_nib := savepen ;
pickup pencircle xscaled tehta_penwidth yscaled penthickness rotated penangle;
tehta_nib := savepen ;
def draw_luva(suffix i,j,k,l)
(expr luva_type,bow_stem_y,bow_arch_x,
bow_side_y,bow_end_x) =
y.i = bow_stem_y * ex ;
x.j - x.i = bow_arch_x * (x.k - x.i) ;
y.k = (if (luva_type = "calma") or (luva_type = "quesse"): 1 - fi bow_side_y) * ex ;
x.l - x.i = bow_end_x * (x.k - x.i) ;
numeric x.luva_serif,y.luva_serif ;
z.luva_serif = z.l + 0.03em *
if luva_type = "tinco": dir 135 else: dir 315 fi ;
path luva_path ;
luva_path = z.i{dir( if (luva_type = "tinco") or (luva_type = "parma"):
penangle else: penangle+180 fi)}
.. z.j{if (luva_type = "tinco") or (luva_type = "parma"):
right else: left fi}
.. z.k ..
if (luva_type = "parma") or (luva_type = "quesse"): {curl 0.3}z.l
else: z.l .. {curl 2}z.luva_serif fi ;
draw luva_path ;
labels(i,j,k,l)
enddef ;
def draw_tinco_luva(suffix i,j,k,l) =
% this draws a complete tinco luva, using the four given suffices
% for the control points. ALL the information about the control
% points is determined within the macro; they are provided only for
% information and later use.
lft x.i = straight_sidebar ; % intersection with stem
top y.j = round(ex + o + tinco_fudge) ; % top
rt x.k = round (x.i + luva_width) ; % right
bot y.l = 0; % round (- o) ; % bottom, with fudge factor
draw_luva(i,j,k,l)("tinco",tp_bow_stem_y,
tc_bow_arch_x,
tc_bow_side_y,
tc_bow_end_x )
enddef ;
def draw_ando_luva(suffix i,j,k,l,ii,jj,kk,ll) =
% this draws a complete ando luva
% first bow
lft x.i = straight_sidebar ; % intersection with stem
top y.j = round(ex + o + tinco_fudge) ; % top
rt x.k = round (x.i + luva_width) ; % right
bot y.l = round (- o) ; % bottom, with fudge factor
draw_luva(i,j,k,l)("tinco",tp_bow_stem_y,
tc_bow_arch_x,
tc_bow_side_y,
tc_bow_end_x ) ;
% now the second luva
z.second = ( (x.i+pt,y.i) .. (infinity,y.i) ) intersectionpoint luva_path ;
x.ii = good.x (xpart z.second) ;
y.jj = y.j ;
rt x.kk = round (x.ii + luva_width) ; % right
y.ll = y.l ;
draw_luva(ii,jj,kk,ll)("tinco",tp_bow_stem_y,
tc_bow_arch_x,
tc_bow_side_y,
tc_bow_end_x )
enddef ;
def draw_parma_luva(suffix i,j,k,l) =
% this draws a complete parma luva
lft x.i = straight_sidebar ; % intersection with stem
top y.j = round(ex + o) ; % top
rt x.k = round (x.i + luva_width) ; % right
bot y.l = 0 ;% bottom
draw_luva(i,j,k,l)("parma",tp_bow_stem_y,
pq_bow_arch_x,
pq_bow_side_y,
pq_bow_end_x )
enddef ;
def draw_umbar_luva(suffix i,j,k,l,ii,jj,kk,ll) =
% this draws a complete umbar luva
% first bow
lft x.i = straight_sidebar ; % intersection with stem
top y.j = round(ex + o) ; % top
rt x.k = round (x.i + luva_width) ; % right
bot y.l = 0 ;% bottom
draw_luva(i,j,k,l)("parma",tp_bow_stem_y,
pq_bow_arch_x,
pq_bow_side_y,
pq_bow_end_x ) ;
%second bow
z.second = ( (x.i+pt,y.i) .. (infinity,y.i) ) intersectionpoint luva_path ;
x.ii = good.x (xpart z.second) ;
y.jj = y.j ;
rt x.kk = round (x.ii + luva_width) ; % right
y.ll = y.l ;
draw_luva(ii,jj,kk,ll)("parma",tp_bow_stem_y,
pq_bow_arch_x,
pq_bow_side_y,
pq_bow_end_x )
enddef ;
def draw_calma_luva(suffix i,j,k,l) =
% this draws a complete calma luva
rt x.i = w - straight_sidebar ; % intersection with stem
y.j = good.y 0 ; % bottom
lft x.k = round (x.i - luva_width) ; % left
top y.l = round(ex - fudge) ; % top
draw_luva(i,j,k,l)("calma",cq_bow_stem_y,
tc_bow_arch_x,
tc_bow_side_y,
tc_bow_end_x )
enddef ;
def draw_anga_luva(suffix i,j,k,l,ii,jj,kk,ll) =
% this draws a complete anga luva
% first bow
rt x.i = w - straight_sidebar ; % intersection with stem
y.j = good.y 0 ; % bottom
lft x.k = round (x.i - luva_width) ; % left
top y.l = round(ex - fudge) ; % top
draw_luva(i,j,k,l)("calma",cq_bow_stem_y,
tc_bow_arch_x,
tc_bow_side_y,
tc_bow_end_x ) ;
% now the second luva
z.second = ( (x.i-pt,y.i) .. (-infinity,y.i) ) intersectionpoint luva_path ;
x.ii = good.x (xpart z.second) ;
y.jj = y.j ;
lft x.kk = round (x.ii - luva_width) ; % left
y.ll = y.l ;
draw_luva(ii,jj,kk,ll)("calma",cq_bow_stem_y,
tc_bow_arch_x,
tc_bow_side_y,
tc_bow_end_x )
enddef ;
def draw_quesse_luva(suffix i,j,k,l) =
% this draws a complete quesse luva
rt x.i = w - straight_sidebar ; % intersection with stem
y.j = good.y 0 ; % bottom
lft x.k = round (x.i - luva_width) ; % left
top y.l = round(ex) ; % top
draw_luva(i,j,k,l)("quesse",cq_bow_stem_y,
pq_bow_arch_x,
pq_bow_side_y,
pq_bow_end_x )
enddef ;
def draw_ungwe_luva(suffix i,j,k,l,ii,jj,kk,ll) =
% this draws a complete ungwe luva
% first bow
rt x.i = w - straight_sidebar ; % intersection with stem
y.j = good.y 0 ; % bottom
lft x.k = round (x.i - luva_width) ; % left
top y.l = round(ex) ; % top
draw_luva(i,j,k,l)("quesse",cq_bow_stem_y,
pq_bow_arch_x,
pq_bow_side_y,
pq_bow_end_x ) ;
% second bow
z.second = ( (x.i-pt,y.i) .. (-infinity,y.i) ) intersectionpoint luva_path ;
x.ii = good.x (xpart z.second) ;
y.jj = y.j ;
lft x.kk = round (x.ii - luva_width) ; % left
y.ll = y.l ;
draw_luva(ii,jj,kk,ll)("quesse",cq_bow_stem_y,
pq_bow_arch_x,
pq_bow_side_y,
pq_bow_end_x )
enddef ;
def draw_telco(suffix i,j)(expr serifs) = % serifs = t,b,tb for Top & Bottom
z.i.$ = z.i + 0.05em * dir(penangle+180) ;
z.i.$$ = z.i + 0.1em * down ;
z.j.$ = z.j + 0.05em * dir(penangle) ;
z.j.$$ = z.j + 0.1em * up ;
draw z.i .. z.j ;
if (serifs = "t") or (serifs = "tb"):
filldraw z.i -- z.i.${dir(penangle-90)}
.. {down}z.i.$$ & z.i.$$ .. z.i & cycle ; fi
if (serifs = "b") or (serifs = "tb"):
filldraw z.j -- z.j.${dir(penangle+90)}
.. {up}z.j.$$ & z.j.$$ .. z.j & cycle ; fi
labels(i,j)
enddef ;
def draw_bar(suffix i,j)(expr serifs) = % serifs = r,l,rl for Right/Left
z.right_serif1 = z.j + 0.04em * left ;
z.right_serif2 = z.j + 0.04em * dir penangle ;
z.left_serif1 = z.i + 0.04em * right ;
z.left_serif2 = z.i + 0.04em * dir(penangle+180) ;
draw if (serifs = "l") or (serifs = "rl"):
z.left_serif2{dir penangle} .. z.left_serif1 else: z.i fi
---
if (serifs = "r") or (serifs = "rl"):
z.right_serif1 .. {dir penangle}z.right_serif2 else: z.j fi ;
labels(i,j)
enddef ;
def draw_dot(suffix i) =
% calculate width of pen
numeric penwdth ;
1.1penwdth = (pen_rt - pen_lft) ++ (pen_top - pen_bot) ;
z.i.$ = z.i + 1/2penwdth*dir(penangle+90) ;
z.i.$$ = z.i + 1/2penwidth*dir(penangle-90) ;
draw z.i.$$ -- z.i.$ ; drawdot z.i.$$ ; drawdot z.i.$ ;
enddef ;
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