X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstem.cc;h=20c5bc79e8c6a60ff5fac58a2348f389db455084;hb=3471866d047b2e22f6d42eedb936d5eddcb5a06a;hp=7ff2812ca98bc528f4ecf0f642b196558a1c0224;hpb=fac2e6ddfa211af496cf9274b7c91e06d79404d3;p=lilypond.git diff --git a/lily/stem.cc b/lily/stem.cc index 7ff2812ca9..20c5bc79e8 100644 --- a/lily/stem.cc +++ b/lily/stem.cc @@ -7,15 +7,19 @@ Jan Nieuwenhuizen TODO: This is way too hairy + + TODO: fix naming. + + Stem-end, chord-start, etc. is all confusing naming. */ -#include // m_pi +#include // rint #include "lookup.hh" #include "directional-element-interface.hh" #include "note-head.hh" #include "stem.hh" -#include "debug.hh" +#include "warn.hh" #include "paper-def.hh" #include "rhythmic-head.hh" #include "font-interface.hh" @@ -28,34 +32,32 @@ #include "staff-symbol-referencer.hh" #include "spanner.hh" #include "side-position-interface.hh" +#include "dot-column.hh" void -Stem::set_beaming (Grob*me ,int i, Direction d) +Stem::set_beaming (Grob*me, int beam_count, Direction d) { SCM pair = me->get_grob_property ("beaming"); if (!gh_pair_p (pair)) { - pair = gh_cons (gh_int2scm (0),gh_int2scm (0)); - me-> set_grob_property ("beaming", pair); + pair = gh_cons (SCM_EOL, SCM_EOL); + me->set_grob_property ("beaming", pair); } - index_set_cell (pair, d, gh_int2scm (i)); -} -int -Stem::beam_count (Grob*me,Direction d) -{ - SCM p=me->get_grob_property ("beaming"); - if (gh_pair_p (p)) - return gh_scm2int (index_cell (p,d)); - else - return 0; + SCM l = index_get_cell (pair, d); + for( int i = 0; i< beam_count; i++) + { + l = gh_cons (gh_int2scm (i), l); + } + index_set_cell (pair, d, l); } + Interval Stem::head_positions (Grob*me) { - if (!heads_i (me)) + if (!head_count (me)) { Interval iv; return iv; @@ -63,13 +65,13 @@ Stem::head_positions (Grob*me) Drul_array e (extremal_heads (me)); - return Interval (Staff_symbol_referencer::position_f (e[DOWN]), - Staff_symbol_referencer::position_f (e[UP])); + return Interval (Staff_symbol_referencer::get_position (e[DOWN]), + Staff_symbol_referencer::get_position (e[UP])); } Real -Stem::chord_start_f (Grob*me) +Stem::chord_start_y (Grob*me) { return head_positions (me)[get_direction (me)] * Staff_symbol_referencer::staff_space (me)/2.0; @@ -113,20 +115,17 @@ Stem::set_stemend (Grob*me, Real se) Direction d= get_direction (me); if (d && d * head_positions (me)[get_direction (me)] >= se*d) - warning (_ ("Weird stem size; check for narrow beams")); + me->warning (_ ("Weird stem size; check for narrow beams")); me->set_grob_property ("stem-end-position", gh_double2scm (se)); } -int -Stem::type_i (Grob*me) -{ - return first_head (me) ? Rhythmic_head::balltype_i (first_head (me)) : 2; -} /* Note head that determines hshift for upstems - */ + + WARNING: triggers direction +*/ Grob* Stem::support_head (Grob*me) { @@ -134,13 +133,13 @@ Stem::support_head (Grob*me) Grob * nh = unsmob_grob (h); if (nh) return nh; - else if (heads_i (me) == 1) + else if (head_count (me) == 1) { /* UGH. */ - return unsmob_grob (ly_car (me->get_grob_property ("heads"))); + return unsmob_grob (ly_car (me->get_grob_property ("note-heads"))); } else return first_head (me); @@ -148,18 +147,35 @@ Stem::support_head (Grob*me) int -Stem::heads_i (Grob*me) +Stem::head_count (Grob*me) { - return Pointer_group_interface::count (me, "heads"); + return Pointer_group_interface::count (me, "note-heads"); } /* The note head which forms one end of the stem. - */ + + WARNING: triggers direction +*/ Grob* Stem::first_head (Grob*me) { - return extremal_heads (me)[-get_direction (me)]; + Direction d = get_direction (me); + if (!d) + return 0; + return extremal_heads (me)[-d]; +} + +/* + The note head opposite to the first head. + */ +Grob* +Stem::last_head (Grob*me) +{ + Direction d = get_direction (me); + if (!d) + return 0; + return extremal_heads (me)[d]; } /* @@ -176,12 +192,12 @@ Stem::extremal_heads (Grob*me) Drul_array exthead; exthead[LEFT] = exthead[RIGHT] =0; - for (SCM s = me->get_grob_property ("heads"); gh_pair_p (s); s = ly_cdr (s)) + for (SCM s = me->get_grob_property ("note-heads"); gh_pair_p (s); s = ly_cdr (s)) { Grob * n = unsmob_grob (ly_car (s)); - int p = int (Staff_symbol_referencer::position_f (n)); + int p = int (Staff_symbol_referencer::get_position (n)); Direction d = LEFT; do { @@ -206,10 +222,10 @@ Array Stem::note_head_positions (Grob *me) { Array ps ; - for (SCM s = me->get_grob_property ("heads"); gh_pair_p (s); s = ly_cdr (s)) + for (SCM s = me->get_grob_property ("note-heads"); gh_pair_p (s); s = ly_cdr (s)) { Grob * n = unsmob_grob (ly_car (s)); - int p = int (Staff_symbol_referencer::position_f (n)); + int p = int (Staff_symbol_referencer::get_position (n)); ps.push (p); } @@ -227,36 +243,32 @@ Stem::add_head (Grob*me, Grob *n) if (Note_head::has_interface (n)) { - Pointer_group_interface::add_grob (me, ly_symbol2scm ("heads"), n); - } - else - { - n->set_grob_property ("rest", n->self_scm ()); + Pointer_group_interface::add_grob (me, ly_symbol2scm ("note-heads"), n); } } bool Stem::invisible_b (Grob*me) { - return ! (heads_i (me) && Rhythmic_head::balltype_i (support_head (me)) >= 1); -} - -int -Stem::get_center_distance (Grob*me, Direction d) -{ - int staff_center = 0; - int distance = (int) (d* (head_positions (me)[d] - staff_center)); - return distance >? 0; + return ! (head_count (me) + && gh_scm2int (me->get_grob_property ("duration-log")) >= 1); } Direction Stem::get_default_dir (Grob*me) { - int du = get_center_distance (me,UP); - int dd = get_center_distance (me,DOWN); - - if (sign (dd - du)) - return Direction (sign (dd -du)); + int staff_center = 0; + Interval hp = head_positions (me); + if (hp.empty_b()) + { + return CENTER; + } + + int udistance = (int) (UP * hp[UP] - staff_center); + int ddistance = (int) (DOWN* hp[DOWN] - staff_center); + + if (sign (ddistance - udistance)) + return Direction (sign (ddistance -udistance)); return to_dir (me->get_grob_property ("neutral-direction")); } @@ -264,11 +276,21 @@ Stem::get_default_dir (Grob*me) Real Stem::get_default_stem_end_position (Grob*me) { + SCM up_to_staff = me->get_grob_property ("up-to-staff"); + if (to_boolean(up_to_staff)) + { + int line_count = Staff_symbol_referencer::line_count (me); + + Direction dir = get_direction (me); + + return dir* (line_count + 3.5); + } + bool grace_b = to_boolean (me->get_grob_property ("grace")); SCM s; Array a; - Real length_f = 0.; + Real length_f = 3.5; SCM scm_len = me->get_grob_property ("length"); if (gh_number_p (scm_len)) { @@ -277,24 +299,24 @@ Stem::get_default_stem_end_position (Grob*me) else { s = me->get_grob_property ("lengths"); - for (SCM q = s; q != SCM_EOL; q = ly_cdr (q)) - a.push (gh_scm2double (ly_car (q))); - - // stem uses half-spaces - length_f = a[ ((flag_i (me) - 2) >? 0) get_grob_property ("stem-shorten"); - for (SCM q = s; gh_pair_p (q); q = ly_cdr (q)) - a.push (gh_scm2double (ly_car (q))); - - - // stem uses half-spaces + Real shorten_f = 0.0; + + SCM sshorten = me->get_grob_property ("stem-shorten"); + if (gh_pair_p (sshorten)) + { + shorten_f = 2* gh_scm2double (robust_list_ref ((duration_log (me) - 2) >? 0, sshorten)); + } - // fixme: use scm_list_n_ref () iso. array[] - Real shorten_f = a[ ((flag_i (me) - 2) >? 0) get_grob_property ("no-stem-extend")); + if (!grace_b && !no_extend_b && dir * st < 0) // junkme? + st = 0.0; /* - Make a little room if we have a flag and there is a dot. - - TODO: - - maybe we should consider moving the dot to the right? + Make a little room if we have a upflag and there is a dot. + previous approach was to lengthen the stem. This is not + good typesetting practice. + */ - if (!beam_l (me) - && flag_i (me)) + if (!get_beam (me) && dir == UP + && duration_log (me) > 2) { Grob * closest_to_flag = extremal_heads (me)[dir]; Grob * dots = closest_to_flag - ? Rhythmic_head::dots_l (closest_to_flag ) : 0; + ? Rhythmic_head::get_dots (closest_to_flag ) : 0; if (dots) { - Real dp = Staff_symbol_referencer::position_f (dots); - Real flagy = flag (me).extent (Y_AXIS)[-dir] * 2; // should divide by staffspace + Real dp = Staff_symbol_referencer::get_position (dots); + Real flagy = flag (me).extent (Y_AXIS)[-dir] * 2 + / Staff_symbol_referencer::staff_space (me); /* Very gory: add myself to the X-support of the parent, which should be a dot-column. */ if (dir * (st + flagy - dp) < 0.5) - Side_position_interface::add_support (dots->get_parent (X_AXIS), me); - - /* - previous approach was to lengthen the stem. This is not - good typesetting practice. */ + { + Grob *par = dots->get_parent (X_AXIS); + + if (Dot_column::has_interface (par)) + { + Side_position_interface::add_support (par, me); + + /* + TODO: apply some better logic here. The flag is + curved inwards, so this will typically be too + much. + */ + } + } } } - bool no_extend_b = to_boolean (me->get_grob_property ("no-stem-extend")); - if (!grace_b && !no_extend_b && dir * st < 0) // junkme? - st = 0.0; - return st; } /* - Number of hooks on the flag, ie. the log of the duration. + + the log of the duration (Number of hooks on the flag minus two) */ int -Stem::flag_i (Grob*me) +Stem::duration_log (Grob*me) { SCM s = me->get_grob_property ("duration-log"); return (gh_number_p (s)) ? gh_scm2int (s) : 2; @@ -375,11 +402,11 @@ Stem::flag_i (Grob*me) void Stem::position_noteheads (Grob*me) { - if (!heads_i (me)) + if (!head_count (me)) return; Link_array heads = - Pointer_group_interface__extract_grobs (me, (Grob*)0, "heads"); + Pointer_group_interface__extract_grobs (me, (Grob*)0, "note-heads"); heads.sort (compare_position); Direction dir =get_direction (me); @@ -388,6 +415,13 @@ Stem::position_noteheads (Grob*me) heads.reverse (); + bool invisible = invisible_b (me); + Real thick = 0.0; + if (invisible) + thick = gh_scm2double (me->get_grob_property ("thickness")) + * me->get_paper ()->get_var ("linethickness"); + + Grob *hed = support_head (me); Real w = Note_head::head_extent (hed,X_AXIS)[dir]; for (int i=0; i < heads.size (); i++) @@ -397,10 +431,10 @@ Stem::position_noteheads (Grob*me) } bool parity= true; // todo: make me settable. - int lastpos = int (Staff_symbol_referencer::position_f (heads[0])); + int lastpos = int (Staff_symbol_referencer::get_position (heads[0])); for (int i=1; i < heads.size (); i ++) { - Real p = Staff_symbol_referencer::position_f (heads[i]); + Real p = Staff_symbol_referencer::get_position (heads[i]); int dy =abs (lastpos- (int)p); if (dy <= 1) @@ -409,7 +443,26 @@ Stem::position_noteheads (Grob*me) { Real l = Note_head::head_extent (heads[i], X_AXIS).length (); - heads[i]->translate_axis (l * get_direction (me), X_AXIS); + Direction d = get_direction (me); + heads[i]->translate_axis (l * d, X_AXIS); + + if (invisible_b(me)) + heads[i]->translate_axis (-thick *2* d , X_AXIS); + + + /* TODO: + + For some cases we should kern some more: when the + distance between the next or prev note is too large, we'd + get large white gaps, eg. + + | + X| + |X <- kern this. + | + X + + */ } parity = !parity; } @@ -425,13 +478,20 @@ SCM Stem::before_line_breaking (SCM smob) { Grob*me = unsmob_grob (smob); - stem_end_position (me); // ugh. Trigger direction calc. - position_noteheads (me); - if (invisible_b (me)) + + /* + Do the calculations for visible stems, but also for invisible stems + with note heads (i.e. half notes.) + */ + if (head_count (me)) + { + stem_end_position (me); // ugh. Trigger direction calc. + position_noteheads (me); + } + else { me->remove_grob_property ("molecule-callback"); - // suicide (); } return SCM_UNSPECIFIED; @@ -483,7 +543,7 @@ Stem::flag (Grob*me) } bool adjust = to_boolean (me->get_grob_property ("adjust-if-on-staffline")); - if (String::compare_i (style, "mensural") == 0) + if (String::compare (style, "mensural") == 0) /* Mensural notation: For notes on staff lines, use different flags than for notes between staff lines. The idea is that flags are always vertically aligned with the staff lines, @@ -510,9 +570,16 @@ Stem::flag (Grob*me) looks slightly misplaced, but that will usually be the programmer's fault (e.g. when trying to attach multiple note heads to a single stem in mensural notation). */ + + /* + perhaps the detection whether this correction is needed should + happen in a different place to avoid the recursion. + + --hwn. + */ Grob *first = first_head(me); int sz = Staff_symbol_referencer::line_count (me)-1; - int p = (int)rint (Staff_symbol_referencer::position_f (first)); + int p = (int)rint (Staff_symbol_referencer::get_position (first)); staffline_offs = (((p ^ sz) & 0x1) == 0) ? "1" : "0"; } else @@ -525,12 +592,12 @@ Stem::flag (Grob*me) staffline_offs = ""; } char c = (get_direction (me) == UP) ? 'u' : 'd'; - String index_str - = String ("flags-") + style + to_str (c) + staffline_offs + to_str (flag_i (me)); + String index_string + = String ("flags-") + style + to_string (c) + staffline_offs + to_string (duration_log (me)); Molecule m - = Font_interface::get_default_font (me)->find_by_name (index_str); + = Font_interface::get_default_font (me)->find_by_name (index_string); if (!fstyle.empty_b ()) - m.add_molecule (Font_interface::get_default_font (me)->find_by_name (String ("flags-") + to_str (c) + fstyle)); + m.add_molecule (Font_interface::get_default_font (me)->find_by_name (String ("flags-") + to_string (c) + fstyle)); return m; } @@ -542,7 +609,7 @@ Stem::dim_callback (SCM e, SCM ax) assert (a == X_AXIS); Grob *se = unsmob_grob (e); Interval r (0, 0); - if (unsmob_grob (se->get_grob_property ("beam")) || abs (flag_i (se)) <= 2) + if (unsmob_grob (se->get_grob_property ("beam")) || abs (duration_log (se)) <= 2) ; // TODO! else { @@ -563,7 +630,35 @@ Stem::brew_molecule (SCM smob) Direction d = get_direction (me); - Real y1 = Staff_symbol_referencer::position_f (first_head (me)); + + Real y1; + + /* + This is required to avoid stems passing in tablature chords... + */ + + + /* + TODO: make the stem start a direction ? + */ + + + + if (to_boolean (me->get_grob_property ("avoid-note-head"))) + { + Grob * lh = last_head (me); + if (!lh) + return SCM_EOL; + y1 = Staff_symbol_referencer::get_position (lh); + } + else + { + Grob * lh = first_head (me); + if (!lh) + return SCM_EOL; + y1 = Staff_symbol_referencer::get_position (lh); + } + Real y2 = stem_end_position (me); Interval stem_y (y1 ? y1); @@ -588,14 +683,14 @@ Stem::brew_molecule (SCM smob) { Real stem_width = gh_scm2double (me->get_grob_property ("thickness")) // URG - * me->paper_l ()->get_var ("stafflinethickness"); + * me->get_paper ()->get_var ("linethickness"); Molecule ss =Lookup::filledbox (Box (Interval (-stem_width/2, stem_width/2), Interval (stem_y[DOWN]*dy, stem_y[UP]*dy))); mol.add_molecule (ss); } - if (!beam_l (me) && abs (flag_i (me)) > 2) + if (!get_beam (me) && abs (duration_log (me)) > 2) { Molecule fl = flag (me); fl.translate_axis (stem_y[d]*dy, Y_AXIS); @@ -615,12 +710,25 @@ Stem::off_callback (SCM element_smob, SCM) Grob *me = unsmob_grob (element_smob); Real r=0; + + if (head_count (me) == 0) + { + return gh_double2scm (0.0); + } + if (Grob * f = first_head (me)) { Interval head_wid = Note_head::head_extent(f, X_AXIS); - Real attach = - Note_head::stem_attachment_coordinate(f, X_AXIS); + + Real attach =0.0; + + if (invisible_b (me)) + { + attach = 0.0; + } + else + attach = Note_head::stem_attachment_coordinate(f, X_AXIS); Direction d = get_direction (me); @@ -635,7 +743,7 @@ Stem::off_callback (SCM element_smob, SCM) { Real rule_thick = gh_scm2double (me->get_grob_property ("thickness")) - * me->paper_l ()->get_var ("stafflinethickness"); + * me->get_paper ()->get_var ("linethickness"); r += - d * rule_thick * 0.5; @@ -647,138 +755,147 @@ Stem::off_callback (SCM element_smob, SCM) Grob* -Stem::beam_l (Grob*me) +Stem::get_beam (Grob*me) { SCM b= me->get_grob_property ("beam"); return unsmob_grob (b); } - // ugh still very long. Stem_info Stem::calc_stem_info (Grob*me) { - Grob * beam = beam_l (me); + SCM up_to_staff = me->get_grob_property ("up-to-staff"); + if (gh_scm2bool(up_to_staff)) { + + // Up-to-staff : the stem end out of the staff. + + /* + FIXME: duplicate code. + */ + int line_count = Staff_symbol_referencer::line_count (me); + + Stem_info si ; + + Direction dir = get_direction (me); + + si.ideal_y_ = dir* (line_count + 1.5); + si.dir_ = dir; + si.shortest_y_ = si.ideal_y_; + + return si; + } + + SCM scm_info = me->get_grob_property ("stem-info"); - Direction beam_dir = Directional_element_interface::get (beam); - if (!beam_dir) + if (gh_pair_p (scm_info )) { - programming_error ("Beam dir not set."); - beam_dir = UP; + Stem_info si ; + + si.dir_ = Directional_element_interface::get(me); + si.ideal_y_ = gh_scm2double (gh_car (scm_info)); + si.shortest_y_ = gh_scm2double (gh_cadr (scm_info)); + + return si; } - + Direction mydir = Directional_element_interface::get (me); Real staff_space = Staff_symbol_referencer::staff_space (me); Real half_space = staff_space / 2; - int multiplicity = Beam::get_multiplicity (beam); - - - SCM space_proc = beam->get_grob_property ("space-function"); - SCM space = gh_call1 (space_proc, gh_int2scm (multiplicity)); - Real interbeam_f = gh_scm2double (space) * staff_space; + Grob * beam = get_beam (me); + int beam_count = beam_multiplicity(me).length()+1; + Real beam_translation= Beam::get_beam_translation (beam); Real thick = gh_scm2double (beam->get_grob_property ("thickness")); - Stem_info info; - info.idealy_f_ = chord_start_f (me); - - // for simplicity, we calculate as if dir == UP - info.idealy_f_ *= beam_dir; - SCM grace_prop = me->get_grob_property ("grace"); - - bool grace_b = to_boolean (grace_prop); + Real note_start = chord_start_y (me); - Array a; - SCM s; + /* from here on, calculate as if dir == UP */ + note_start *= mydir; - s = me->get_grob_property ("beamed-minimum-lengths"); - a.clear (); - for (SCM q = s; q != SCM_EOL; q = ly_cdr (q)) - a.push (gh_scm2double (ly_car (q))); - + SCM grace_prop = me->get_grob_property ("grace"); + + bool grace_b = to_boolean (grace_prop); + SCM bml = robust_list_ref ( beam_count , + me->get_grob_property ("beamed-minimum-lengths")); - Real minimum_length = a[multiplicity get_grob_property ("beamed-lengths"); + Real minimum_length = gh_scm2double(bml)*staff_space; + SCM bl = robust_list_ref ( beam_count , + me->get_grob_property ("beamed-lengths")); + Real stem_length = gh_scm2double(bl) * staff_space; - a.clear (); - for (SCM q = s; q != SCM_EOL; q = ly_cdr (q)) - a.push (gh_scm2double (ly_car (q))); - Real stem_length = a[multiplicity 0) ? thick : 0) - 0.5 * thick; - if (!beam_dir || (beam_dir == Directional_element_interface::get (me))) - /* normal beamed stem */ - { - if (multiplicity) - { - info.idealy_f_ += thick + (multiplicity - 1) * interbeam_f; - } - info.miny_f_ = info.idealy_f_; - info.maxy_f_ = INT_MAX; + Real shortest_y = note_start + minimum_length + beam_lengthen; + Real ideal_y = stem_length + note_start + beam_lengthen; - info.idealy_f_ += stem_length; - info.miny_f_ += minimum_length; + /* + lowest beam of (UP) beam must never be lower than second staffline - /* - lowest beam of (UP) beam must never be lower than second staffline + Hmm, reference (Wanske?) - Hmm, reference (Wanske?) + Although this (additional) rule is probably correct, + I expect that highest beam (UP) should also never be lower + than middle staffline, just as normal stems. - Although this (additional) rule is probably correct, - I expect that highest beam (UP) should also never be lower - than middle staffline, just as normal stems. - - */ - bool no_extend_b = to_boolean (me->get_grob_property ("no-stem-extend")); - if (!grace_b && !no_extend_b) - { - /* highest beam of (UP) beam must never be lower than middle - staffline - lowest beam of (UP) beam must never be lower than second staffline - */ - info.miny_f_ = - info.miny_f_ >? 0 - >? (- 2 * half_space - thick - + (multiplicity > 0) * thick - + interbeam_f * (multiplicity - 1)); - } - } - else - /* knee */ + Add: not for knees. Not sure if that's is a good thing. + */ + bool no_extend_b = to_boolean (me->get_grob_property ("no-stem-extend")); + bool knee_b = to_boolean (beam->get_grob_property ("knee")); + if (!grace_b && !no_extend_b && !knee_b) { - info.idealy_f_ -= thick; - info.maxy_f_ = info.idealy_f_; - info.miny_f_ = -INT_MAX; - - info.idealy_f_ -= stem_length; - info.maxy_f_ -= minimum_length; + /* highest beam of (UP) beam must never be lower than middle + staffline + lowest beam of (UP) beam must never be lower than second staffline + */ + ideal_y = + ideal_y >? 0 + >? (- 2 * half_space - thick + beam_lengthen); } + - info.idealy_f_ = (info.maxy_f_ ? info.miny_f_; - - s = beam->get_grob_property ("shorten"); + // ideal_y = ideal_y >? shortest_y; + SCM s = beam->get_grob_property ("shorten"); if (gh_number_p (s)) - info.idealy_f_ -= gh_scm2double (s); - - Grob *common = me->common_refpoint (beam, Y_AXIS); - Real interstaff_f = beam_dir * - (me->relative_coordinate (common, Y_AXIS) - - beam->relative_coordinate (common, Y_AXIS)); - - info.idealy_f_ += interstaff_f; - info.miny_f_ += interstaff_f; - info.maxy_f_ += interstaff_f ; + ideal_y -= gh_scm2double (s); - return info; + + ideal_y *= mydir; + shortest_y *= mydir; + + me->set_grob_property ("stem-info", + scm_list_n (gh_double2scm (ideal_y), + gh_double2scm (shortest_y), + SCM_UNDEFINED)); + + Stem_info si; + si.dir_ = mydir; + si.shortest_y_ = shortest_y; + si.ideal_y_ = ideal_y; + + return si; } -bool -Stem::has_interface (Grob*m) + +// move to stem? +Slice +Stem::beam_multiplicity (Grob *stem) { - return m && m->has_interface (ly_symbol2scm ("stem-interface")); -} + SCM beaming= stem->get_grob_property ("beaming"); + Slice l = int_list_to_slice (gh_car (beaming)); + Slice r = int_list_to_slice (gh_cdr (beaming)); + l.unite (r); -void -Stem::set_interface (Grob*me) -{ - me->set_interface (ly_symbol2scm ("stem-interface")); + return l; } + + +ADD_INTERFACE (Stem,"stem-interface", + "A stem", + "up-to-staff avoid-note-head adjust-if-on-staffline thickness stem-info beamed-lengths beamed-minimum-lengths lengths beam stem-shorten duration-log beaming neutral-direction stem-end-position support-head note-heads direction length style no-stem-extend flag-style dir-forced"); + +