From c8263384b529f831af1d53db4fe61f8de4459b35 Mon Sep 17 00:00:00 2001 From: =?utf8?q?J=C3=BCrgen=20Reuter?= Date: Sat, 13 Sep 2003 00:00:22 +0000 Subject: [PATCH] * mf/parmesan-clefs.mf: still more set_char_box() fixes and code cleanup; bugfix: exact_center * Documentation/user/refman.itely: added more documentation on ambitus according to recent questions on lilypond-user list --- ChangeLog | 8 + Documentation/user/refman.itely | 76 +++++++- mf/parmesan-clefs.mf | 295 ++++++++++++++++---------------- 3 files changed, 232 insertions(+), 147 deletions(-) diff --git a/ChangeLog b/ChangeLog index 68428c7c6c..08a20f6b4f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,11 @@ +2003-09-13 Juergen Reuter + + * mf/parmesan-clefs.mf: still more set_char_box() fixes and code + cleanup; bugfix: exact_center + + * Documentation/user/refman.itely: added more documentation on + ambitus according to recent questions on lilypond-user list + 2003-09-12 Han-Wen Nienhuys * input/regression/ottava.ly (texidoc): demo 15ma too. diff --git a/Documentation/user/refman.itely b/Documentation/user/refman.itely index 32f4edf3b9..0396005cd3 100644 --- a/Documentation/user/refman.itely +++ b/Documentation/user/refman.itely @@ -3558,10 +3558,12 @@ To apply, add the @internalsref{Ambitus_engraver} to the @internalsref{Voice} context, i.e. @example - \paper @{ \translator @{ + \paper @{ + \translator @{ \VoiceContext \consists Ambitus_engraver - @} @} + @} + @} @end example For example, @@ -3585,10 +3587,73 @@ lower = \notes \relative c { >> } \paper { + \translator { + \StaffContext + \consists Ambitus_engraver + } + } +} +@end lilypond + +If you have multiple voices in a single staff, and you want a single +ambitus per staff rather than per each voice, then add the +@internalsref{Ambitus_engraver} to the @internalsref{Staff} context +rather than to the @internalsref{Voice} context. + +If you have a score with multiple staves and you want the ambitus to +appear only in some of the staves, then you have to declare a new +context type derived from the @internalsref{Voice} context or +@internalsref{Staff} context. The derived context must consist of the +@internalsref{Ambitus_engraver} and it must be accepted by a proper +parent context, in the below example the @internalsref{Staff} context +or @internalsref{Score} context, respectively. The original context +and the derived context can then be used in parallel in the same +score. + +@lilypond[singleline] +voiceA = \notes \transpose c c'' { + c4 d e c e f g2 +} +voiceB = \notes \transpose c c' { + e4 f g2 g8 a g f e4 c +} +\score { + \context ChoirStaff << + \new Staff << + \new VoiceWithAmbitus { \stemUp \voiceA } + \new VoiceWithAmbitus { \stemDown \voiceB } + >> + \new StaffWithAmbitus << + \new Voice { \stemUp \voiceA } + \new Voice { \stemDown \voiceB } + >> + \new Staff << + \new Voice { \stemUp \voiceA } + \new Voice { \stemDown \voiceB } + >> + >> + \paper { + raggedright = ##t \translator { \VoiceContext + \name "VoiceWithAmbitus" + \alias "Voice" + \consists Ambitus_engraver + } + \translator { + \StaffContext + \name "StaffWithAmbitus" + \alias "Staff" \consists Ambitus_engraver } + \translator { + \StaffContext + \accepts "VoiceWithAmbitus" + } + \translator { + \ScoreContext + \accepts "StaffWithAmbitus" + } } } @end lilypond @@ -3598,6 +3663,13 @@ lower = \notes \relative c { @internalsref{Ambitus}, and @inputfileref{input/regression,ambitus.ly}. +@refbugs + +There is no collision handling in the case of multiple per-voice +ambitus. To avoid collision, multiple ambitus in a single staff +should be printed horizontally one after the other rather than on top +of each other in the same horizontal position. + @node Tablatures @section Tablatures diff --git a/mf/parmesan-clefs.mf b/mf/parmesan-clefs.mf index f37b880c41..0cdf84899a 100644 --- a/mf/parmesan-clefs.mf +++ b/mf/parmesan-clefs.mf @@ -54,8 +54,10 @@ def draw_vaticana_do_clef(expr exact_center, reduction) = reduced_il# = staff_space# * reduction; - set_char_box(0.0reduced_il#, 0.5reduced_il#, - 0.8reduced_il#, 0.8reduced_il#); + set_char_box(0 - xpart exact_center, + 0.5reduced_il# + xpart exact_center, + 0.8reduced_il# - ypart exact_center, + 0.8reduced_il# + ypart exact_center); define_pixels(reduced_il); @@ -111,8 +113,10 @@ def draw_vaticana_fa_clef(expr exact_center, reduction) = %right-handed puncta as in do clef draw_vaticana_do_clef(exact_center + (0.55reduced_il, 0), reduction); - set_char_box(0.0reduced_il#, 1.05reduced_il#, - 1.5reduced_il#, 0.8reduced_il#); + set_char_box(0 - xpart exact_center, + 1.05reduced_il# + xpart exact_center, + 1.5reduced_il# - ypart exact_center, + 0.8reduced_il# + ypart exact_center); enddef; @@ -179,8 +183,10 @@ def draw_medicaea_do_clef(expr exact_center, reduction) = = bot ypart za + 1.5 reduced_il; draw za -- zb; - set_char_box(0, 1.0reduced_il#, - 1.5reduced_il#, 1.5reduced_il#); + set_char_box(0 - xpart exact_center, + 1.0reduced_il# + xpart exact_center, + 1.5reduced_il# - ypart exact_center, + 1.5reduced_il# + ypart exact_center); enddef; @@ -224,7 +230,10 @@ def draw_medicaea_fa_clef(expr exact_center, reduction) = %right-handed puncta as in do clef draw_medicaea_do_clef(exact_center + (0.7reduced_il, 0), reduction); - set_char_box(0, 1.7reduced_il#, 1.5reduced_il#, 1.5reduced_il#); + set_char_box(0 - xpart exact_center, + 1.7reduced_il# + xpart exact_center, + 1.5reduced_il# - ypart exact_center, + 1.5reduced_il# + ypart exact_center); enddef; @@ -247,61 +256,6 @@ fet_endchar; % % % -brevis_wid# := 2 staff_space#; - -def draw_brevis(expr exact_center, reduction, small_width, small_height) = - % - % inspired by function draw_brevis of - % feta-bolletjes.mf - % - save reduced_slt, reduced_nht; - save stem_width, head_width; - save serif_size, serif_protrude; - save holeheight, beamheight; - - reduced_slt# = stafflinethickness# * reduction; - reduced_nht# = noteheight# * reduction; - stem_width# = 1.4 reduced_slt#; - if small_width: - head_width# = 0.5brevis_wid# * reduction; - else: - head_width# = brevis_wid# * reduction; - fi; - if small_height: - serif_size# = 0.64 reduced_slt#; - serif_protrude# = 0.96 serif_size#; - holeheight# = 3 reduced_slt#; - beamheight# = 0.32(reduced_nht# - holeheight#); - else: - serif_size# = 1.0 reduced_slt#; - serif_protrude# = 1.5 serif_size#; - holeheight# = 3 reduced_slt#; - beamheight# = 0.5(reduced_nht# - holeheight#); - fi; - define_pixels(reduced_slt); - define_pixels(stem_width); - define_pixels(head_width); - define_pixels(serif_size); - define_pixels(serif_protrude); - define_pixels(beamheight); - - penpos1(stem_width, 0); - penpos2(stem_width, 0); - penpos3(beamheight, 90); - penpos4(beamheight, 90); - penpos5(stem_width, 180); - - z1l = exact_center; - z2l = z1l + (0, -reduced_slt/2); - z3r = z2r + serif_size*(1,-1); - y4r = y3r; - x4l = x1l + head_width/2; - z5l = z3l + (-serif_size, -serif_protrude); - - penlabels(1,2,3,4,5); - fill z1r -- z1l -- z5r{down} .. z5l{up} .. z3l{right} - -- z4l -- z4r -- z3r{left} .. z2r{up} -- cycle; -enddef; % % width: interval from left end to right end @@ -309,7 +263,7 @@ enddef; % exact_center: the coordinates of the vertical center point of the % left edge. % -def draw_full_brevis(expr exact_center, bwidth, bheight, blinethickness) = +def draw_brevis(expr exact_center, bwidth, bheight, blinethickness) = save xoffs, yoffs, brevis_width, brevis_height, linethickness; xoffs# = xpart exact_center; @@ -317,21 +271,21 @@ def draw_full_brevis(expr exact_center, bwidth, bheight, blinethickness) = brevis_width# = bwidth; brevis_height# = bheight; linethickness# = blinethickness; - save stem_width, beam_height, serif_size, serif_protrude, hole_height; - stem_width# = 1.4 linethickness#; + save beam_width, beam_height, serif_size, serif_protrude, hole_height; + beam_width# = 1.4 linethickness#; hole_height# = 3 linethickness#; 2 beam_height# + hole_height# = brevis_height#; serif_size# = (hole_height# - linethickness#)/2; serif_protrude# = 1.5 serif_size#; define_pixels(xoffs, yoffs, brevis_width, brevis_height, linethickness); - define_pixels(stem_width, beam_height, serif_size, serif_protrude); + define_pixels(beam_width, beam_height, serif_size, serif_protrude); - penpos1(stem_width, 0); - penpos2(stem_width, 0); + penpos1(beam_width, 0); + penpos2(beam_width, 0); penpos3(beam_height, 90); penpos4(beam_height, 90); - penpos5(stem_width, 180); + penpos5(beam_width, 180); z1l = (xoffs, yoffs); z2l = z1l + (0, -linethickness); z3r = z2r + serif_size*(1,-1); @@ -362,11 +316,16 @@ def draw_neo_mensural_c_clef(expr exact_center, reduction) = stem_width# = 1.4 reduced_slt#; define_pixels(reduced_il, reduced_slt, stem_width); - draw_full_brevis(exact_center + (3reduced_slt#, 0), - 2reduced_il#, reduced_il#, reduced_slt#); + draw_brevis(exact_center + (3reduced_slt#, 0), + 2reduced_il#, reduced_il#, reduced_slt#); + + save xoffs, yoffs; + xoffs# = xpart exact_center; + yoffs# = ypart exact_center; + define_pixels(xoffs, yoffs); pickup pencircle xscaled stem_width yscaled blot_diameter; - lft x8 = lft x9 = xoffs - 3reduced_slt; + lft x8 = lft x9 = xoffs; lft x10 = lft x11 = lft x8 + 3reduced_slt; rt x12 = rt x13 = lft x10 + 2reduced_il; rt x14 = rt x15 = rt x12 + 3reduced_slt; @@ -378,8 +337,10 @@ def draw_neo_mensural_c_clef(expr exact_center, reduction) = draw z12 -- z13; draw z14 -- z15; - set_char_box(0, 2reduced_il# + 6reduced_slt#, - 2reduced_il#, 2reduced_il#); + set_char_box(0 - xpart exact_center, + 2reduced_il# + 6reduced_slt# + xpart exact_center, + 2reduced_il# - ypart exact_center, + 2reduced_il# + ypart exact_center); enddef; @@ -403,10 +364,12 @@ def draw_petrucci_c_clef(expr exact_center, flare_align, reduction) = save reduced_il, reduced_slt; reduced_il# = staff_space# * reduction; reduced_slt# = stafflinethickness# * reduction; - draw_full_brevis(exact_center + (0, 0.5staff_space#), - reduced_il#, reduced_il#, reduced_slt#); define_pixels(reduced_il); - addto currentpicture also currentpicture shifted (0, -reduced_il); + + draw_brevis(exact_center + (0, 0.5staff_space#), + reduced_il#, reduced_il#, reduced_slt#); + + addto currentpicture also currentpicture shifted (0, -staff_space); save half_reduced_il, left_depth, left_height; half_reduced_il# = staff_space# * sqrt(reduction); @@ -432,7 +395,10 @@ def draw_petrucci_c_clef(expr exact_center, flare_align, reduction) = y11 = max(y9 + 0.2*half_reduced_il, yoffs - 2.2half_reduced_il); draw z10 .. z11; - set_char_box(0, reduced_il#, left_depth#, left_height#); + set_char_box(0 - xpart exact_center, + reduced_il# + xpart exact_center, + left_depth# - ypart exact_center, + left_height# + ypart exact_center); enddef; @@ -490,18 +456,39 @@ fet_endchar; def draw_mensural_c_clef(expr exact_center, reduction) = % inspired by Ockeghem, "Missa Prolationum", in: MGG, volume % 9, table 94. - draw_petrucci_c_clef(exact_center, 0, reduction); + save reduced_il; + reduced_il# = staff_space# * reduction; + draw_brevis(exact_center + (0, 0.5staff_space#), + 2reduced_il#, 0.8staff_space#, 0.8stafflinethickness#); + define_pixels(reduced_il); + addto currentpicture also currentpicture shifted (0, -staff_space); addto currentpicture also currentpicture shifted (0, -staff_space); save half_reduced_il; - save left_depth, left_height; - half_reduced_il# = staff_space# * sqrt(reduction); - left_height# = 3.2 * half_reduced_il#; - left_depth# = left_height# + staff_space#; + define_pixels(half_reduced_il); - set_char_box(0, reduced_il#, left_depth#, left_height#); + save xoffs, yoffs; + xoffs# = xpart exact_center; + yoffs# = ypart exact_center; + define_pixels(xoffs, yoffs); + + pickup pencircle xscaled 1.4 stafflinethickness yscaled blot_diameter; + lft x8 = lft x9 = xoffs; + top y8 = yoffs + 2.2 half_reduced_il; + bot y9 = yoffs - 2.2 half_reduced_il - staff_space; + draw z8 .. z9; + + rt x10 = rt x11 = xoffs + brevis_width; + y10 = yoffs + 1.4half_reduced_il; + y11 = yoffs - 1.4half_reduced_il - staff_space; + draw z10 .. z11; + + set_char_box(0 - xpart exact_center, + 2reduced_il# + xpart exact_center, + -yoffs# + 2.2 half_reduced_il# + staff_space# - ypart exact_center, + yoffs# + 2.2 half_reduced_il# + ypart exact_center); enddef; @@ -554,18 +541,18 @@ def draw_petrucci_f_clef(expr exact_center, reduction) = % Campra, "Entr'ee des s'er'enades" (1710), in: MGG, volume 2, % col. 1649 ("Contredanse"), fig. 2. % - draw_brevis(exact_center, reduction, true, false); save reduced_il, reduced_slt; - save stem_width, interline; - reduced_il# = staff_space# * reduction; reduced_slt# = stafflinethickness# * reduction; - stem_width# = 1.4 reduced_slt#; - interline# = staff_space#; - define_pixels(reduced_il); define_pixels(reduced_slt); + + draw_brevis(exact_center, reduced_il#, reduced_il#, reduced_slt#); + + save stem_width, interline; + stem_width# = 1.4 reduced_slt#; + interline# = staff_space#; define_pixels(stem_width); define_pixels(interline); @@ -577,34 +564,36 @@ def draw_petrucci_f_clef(expr exact_center, reduction) = % brevis stem pickup pencircle xscaled stem_width yscaled blot_diameter; - z6 = exact_center + (2x4l - stem_width/2, 0); - z7 = z6 + (0, -4reduced_il); - draw z6 .. z7; + rt z8 = exact_center + (reduced_il, 0); + z9 = z8 + (0, -4reduced_il); + draw z8 .. z9; % upper diamond draw_diamond(exact_center + (1.6interline*reduction, interline/2), reduction); pickup pencircle xscaled stem_width yscaled blot_diameter; - z8 = exact_center + + z10 = exact_center + (1.6interline*reduction + stem_width/2, interline*reduction); - z9 = z8 + (0, 1.5interline*reduction); - draw z8 .. z9; % diamond stem + top z11 = z10 + (0, 1.5interline*reduction); + draw z10 .. z11; % diamond stem % lower diamond draw_diamond(exact_center + (1.6interline*reduction, -interline/2), reduction); pickup pencircle xscaled stem_width yscaled blot_diameter; - z10 = exact_center + + z12 = exact_center + (1.6interline*reduction - stem_width/2, -interline*reduction); - z11 = z10 + (0, -3.5interline*reduction); - draw z10 .. z11; % diamond stem + bot z13 = z12 + (0, -3.5interline*reduction); + draw z12 .. z13; % diamond stem save reduced_il, rh_height, rh_width; reduced_il# = staff_space# * reduction; rh_height# = 1.2reduced_il#; rh_width# / rh_height# = tand(30); - set_char_box(0, 1.6interline#*reduction + 0.5rh_width#, - 4.5*interline#*reduction, 2.5*interline#*reduction); + set_char_box(0 - xpart exact_center, + 1.6interline#*reduction + 0.5rh_width# + xpart exact_center, + 4.5*interline#*reduction - ypart exact_center, + 2.5*interline#*reduction + ypart exact_center); enddef; @@ -626,35 +615,41 @@ def draw_mensural_f_clef(expr exact_center, reduction) = % Booke of Songes" (1597), in: MGG, volume 3, col. 721 % ("Dowland"), fig. 3. - save reduced_slt, stem_width, reduced_nht, holeheight, beamheight; + save width, reduced_slt, stem_width, dot_diameter; + width# = 1.2staff_space# * reduction; reduced_slt# = stafflinethickness# * reduction; stem_width# = 1.4 reduced_slt#; - reduced_nht# = noteheight# * reduction; - holeheight# = 3 reduced_slt#; - beamheight# = 0.4(reduced_nht# - holeheight#); - - define_pixels(beamheight, stem_width, staff_space); + dot_diameter# = 0.1 reduction * staff_space#; + define_pixels(width, stem_width, staff_space, dot_diameter); pickup pencircle - xscaled beamheight + xscaled 0.2width yscaled stem_width rotated 45; - draw - exact_center + (1.0 staff_space, 0.55 staff_space) -- - exact_center + (1.1 staff_space, 0.45 staff_space); + % half circle + lft z5 = (0, 0); + draw halfcircle scaled width rotated -90 + shifted (z5-exact_center); - draw - exact_center + (1.1 staff_space, -0.55 staff_space) -- - exact_center + (1.1 staff_space, -0.45 staff_space); - draw halfcircle scaled 1.1 staff_space rotated -90 - shifted (-exact_center + (+0.05 staff_space, 0)); + % upper dot + rt x2 = xpart exact_center + width; + top y1 = ypart exact_center + 0.5width; + z2 - z1 = (dot_diameter, -dot_diameter); + draw z1 -- z2; + + % lower dot + x3 = x1; + top y1 - bot y4 = width; + z4 - z3 = (dot_diameter, -dot_diameter); + draw z3 -- z4; - set_char_box(0.5beamheight#, 1.1staff_space# + 0.5beamheight#, - 0.55staff_space# + 0.5stem_width#, - 0.55staff_space# + 0.5stem_width#); + set_char_box(0 - xpart exact_center, + width# + xpart exact_center, + 0.5width# - ypart exact_center, + 0.5width# + ypart exact_center); enddef; fet_beginchar("mensural f clef", "mensural_f", "mensfclef") @@ -690,8 +685,10 @@ def draw_mensural_g_clef(expr exact_center, reduction) = reduced_il#=staff_space#*reduction; - set_char_box(0.0reduced_il#, 1.2reduced_il#, - 0.8reduced_il#, 1.5reduced_il#); + set_char_box(0 - xpart exact_center, + 1.2reduced_il# + xpart exact_center, + 0.8reduced_il# - ypart exact_center, + 1.5reduced_il# + ypart exact_center); stem_width# = 0.17 reduced_il#; height# = 1.5 reduced_il#; @@ -776,8 +773,10 @@ def draw_petrucci_g_clef(expr exact_center, reduction) = reduced_slt# = stafflinethickness# * reduction; define_pixels(reduced_il, reduced_slt); - set_char_box(0, 1.25 reduced_il#, - 0.65 reduced_il#, 3.80 reduced_il#); + set_char_box(0 - xpart exact_center, + 1.25 reduced_il# + xpart exact_center, + 0.65 reduced_il# - ypart exact_center, + 3.80 reduced_il# + ypart exact_center); save za, zb, zc, zd, ze, zf, zg, zh, zi, zj; pair za, zb, zc, zd, ze, zf, zg, zh, zi, zj; @@ -857,16 +856,18 @@ def draw_hufnagel_do_clef(expr exact_center, reduction) = save za, zb, zc, zd, ze, zf; pair za, zb, zc, zd, ze, zf; - za = exact_center + (+0.30reduced_il, +.45reduced_il); - zb = exact_center + (+0.20reduced_il, +.45reduced_il); - zc = exact_center + (-0.10reduced_il, +.60reduced_il); - zd = exact_center + (-0.40reduced_il, +.45reduced_il); - ze = exact_center + (-0.40reduced_il, -.45reduced_il); - zf = exact_center + (-0.20reduced_il, -.55reduced_il); + za = exact_center + (0.90reduced_il, +.45reduced_il); + zb = exact_center + (0.80reduced_il, +.45reduced_il); + zc = exact_center + (0.50reduced_il, +.60reduced_il); + zd = exact_center + (0.20reduced_il, +.45reduced_il); + ze = exact_center + (0.20reduced_il, -.45reduced_il); + zf = exact_center + (0.40reduced_il, -.55reduced_il); draw za .. zb .. zc -- zd -- ze -- zf; - set_char_box(0.60reduced_il#, 0.50reduced_il#, - 0.70reduced_il#, 0.75reduced_il#); + set_char_box(0 - xpart exact_center, + 1.10reduced_il# + xpart exact_center, + 0.70reduced_il# - ypart exact_center, + 0.75reduced_il# + ypart exact_center); enddef; @@ -877,7 +878,7 @@ fet_beginchar("Hufnagel do clef", "hufnagel_do", "hufnageldoclef") draw_hufnagel_do_clef((0,0), 1.0); fet_endchar; fet_beginchar("Hufnagel do clef", "hufnagel_do_change", "chufnageldoclef") - draw_hufnagel_do_clef((1.3 staff_space#,0), .8); + draw_hufnagel_do_clef((0,0), .8); fet_endchar; @@ -899,24 +900,26 @@ def draw_hufnagel_fa_clef(expr exact_center, reduction) = save za, zb, zc, zd, ze, zf; pair za, zb, zc, zd, ze, zf; - za = exact_center + (+0.30reduced_il, +0.70reduced_il); - zb = exact_center + (+0.20reduced_il, +0.70reduced_il); - zc = exact_center + (-0.10reduced_il, +0.85reduced_il); - zd = exact_center + (-0.40reduced_il, +0.70reduced_il); - ze = exact_center + (-0.40reduced_il, -1.10reduced_il); + za = exact_center + (0.90reduced_il, +0.70reduced_il); + zb = exact_center + (0.80reduced_il, +0.70reduced_il); + zc = exact_center + (0.50reduced_il, +0.85reduced_il); + zd = exact_center + (0.20reduced_il, +0.70reduced_il); + ze = exact_center + (0.20reduced_il, -1.10reduced_il); draw za .. zb .. zc -- zd -- ze; save zg, zh, zi, zj; pair zg, zh, zi, zj; - zg = exact_center + (+0.30reduced_il, -0.05reduced_il); - zh = exact_center + (+0.20reduced_il, -0.05reduced_il); - zi = exact_center + (-0.10reduced_il, +0.10reduced_il); - zj = exact_center + (-0.40reduced_il, -0.05reduced_il); + zg = exact_center + (0.90reduced_il, -0.05reduced_il); + zh = exact_center + (0.80reduced_il, -0.05reduced_il); + zi = exact_center + (0.50reduced_il, +0.10reduced_il); + zj = exact_center + (0.20reduced_il, -0.05reduced_il); draw zg .. zh .. zi -- zj; - set_char_box(0.60reduced_il#, 0.60reduced_il#, - 1.15reduced_il#, 1.00reduced_il#); + set_char_box(0 - xpart exact_center, + 1.20reduced_il# + xpart exact_center, + 1.15reduced_il# - ypart exact_center, + 1.00reduced_il# + ypart exact_center); enddef; @@ -934,8 +937,10 @@ fet_endchar; def draw_hufnagel_do_fa_clef(expr exact_center, reduction) = draw_hufnagel_do_clef(exact_center, reduction); draw_hufnagel_fa_clef(exact_center + (0, -2staff_space), reduction); - set_char_box(0.60reduced_il#, 0.60reduced_il#, - 1.15reduced_il# + 2staff_space#, 0.75reduced_il#); + set_char_box(0 - xpart exact_center, + 1.20reduced_il# + xpart exact_center, + 1.15reduced_il# + 2staff_space# - ypart exact_center, + 0.75reduced_il# + ypart exact_center); enddef; -- 2.39.2