X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstem.cc;h=f144ba137e4d47fc2522cfba3511afe8136361dc;hb=refs%2Ftags%2Frelease%2F1.3.132;hp=a0600e8636a1bef5f01c004660ebf67ad29989db;hpb=f3467e6b78be6d8497cf4d0a43ffd01656a33300;p=lilypond.git diff --git a/lily/stem.cc b/lily/stem.cc index a0600e8636..f144ba137e 100644 --- a/lily/stem.cc +++ b/lily/stem.cc @@ -3,360 +3,667 @@ source file of the GNU LilyPond music typesetter - (c) 1996, 1997--1999 Han-Wen Nienhuys + (c) 1996--2001 Han-Wen Nienhuys + Jan Nieuwenhuizen TODO: This is way too hairy */ +#include // m_pi +#include "lookup.hh" +#include "directional-element-interface.hh" +#include "note-head.hh" #include "stem.hh" #include "debug.hh" #include "paper-def.hh" -#include "note-head.hh" -#include "lookup.hh" +#include "rhythmic-head.hh" +#include "font-interface.hh" #include "molecule.hh" -#include "p-col.hh" +#include "paper-column.hh" #include "misc.hh" #include "beam.hh" #include "rest.hh" +#include "group-interface.hh" +#include "staff-symbol-referencer.hh" +#include "spanner.hh" +void +Stem::set_beaming (Grob*me ,int i, 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); + } + index_set_cell (pair, d, gh_int2scm (i)); +} - -Stem::~Stem () +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; } -Stem::Stem () +Interval +Stem::head_positions (Grob*me) { - /* - TODO: staff-size - */ - beams_i_drul_[LEFT] = beams_i_drul_[RIGHT] = -1; - mult_i_ = 0; - - yextent_drul_[DOWN] = yextent_drul_[UP] = 0; - flag_i_ = 2; - dir_ = CENTER; - beam_dir_ = CENTER; - dir_forced_b_ = false; - stem_xdir_ = LEFT; - staff_size_i_ = 8; - - beam_gap_i_ = 0; - beam_l_ = 0; + if (!heads_i (me)) + { + Interval iv; + return iv; + } + + Drul_array e (extremal_heads (me)); + + return Interval (Staff_symbol_referencer::position_f (e[DOWN]), + Staff_symbol_referencer::position_f ( e[UP])); } -Interval_t -Stem::head_positions () const + +Real +Stem::chord_start_f (Grob*me) { - /* - Mysterious FreeBSD fix by John Galbraith. Somehow, the empty intervals - trigger FP exceptions on FreeBSD. Fix: do not return infinity + return head_positions(me)[get_direction (me)] + * Staff_symbol_referencer::staff_space (me)/2.0; +} - */ - if (!head_l_arr_.size ()) +Real +Stem::stem_end_position (Grob*me) +{ + SCM p =me->get_grob_property ("stem-end-position"); + Real pos; + if (!gh_number_p (p)) { - return Interval_t (100,-100); + + pos = get_default_stem_end_position (me); + me->set_grob_property ("stem-end-position", gh_double2scm (pos)); } + else + pos = gh_scm2double (p); + + return pos; +} + +Direction +Stem::get_direction (Grob*me) +{ + Direction d = Directional_element_interface::get (me); - Interval_t r; - for (int i =0; i < head_l_arr_.size (); i++) + if (!d) { - int p = head_l_arr_[i]->position_i_; - r[BIGGER] = r[BIGGER] >? p; - r[SMALLER] = r[SMALLER] = se*d) + warning (_ ("Weird stem size; check for narrow beams")); + + me->set_grob_property ("stem-end-position", gh_double2scm (se)); } -Real -Stem::stem_length_f () const +int +Stem::type_i (Grob*me) { - return yextent_drul_[UP]-yextent_drul_[DOWN] ; + return first_head (me) ? Rhythmic_head::balltype_i (first_head (me)) : 2; } -Real -Stem::stem_begin_f () const +/* + Note head that determines hshift for upstems + */ +Grob* +Stem::support_head (Grob*me) { - return yextent_drul_[Direction(-dir_)]; + SCM h = me->get_grob_property ("support-head"); + Grob * nh = unsmob_grob (h); + if (nh) + return nh; + else if (heads_i (me) == 1) + { + /* + UGH. + */ + + return unsmob_grob (gh_car (me->get_grob_property ("heads"))); + } + else + return first_head (me); } -Real -Stem::chord_start_f () const + +int +Stem::heads_i (Grob*me) { - return head_positions()[dir_] * paper ()->internote_f (); + return Pointer_group_interface::count (me, "heads"); } -Real -Stem::stem_end_f () const +/* + The note head which forms one end of the stem. + */ +Grob* +Stem::first_head (Grob*me) { - return yextent_drul_[dir_]; + return extremal_heads (me)[-get_direction (me)]; } -void -Stem::set_stemend (Real se) +/* + START is part where stem reaches `last' head. + */ +Drul_array +Stem::extremal_heads (Grob*me) { - // todo: margins - if (dir_ && dir_ * head_positions()[dir_] >= se*dir_) - warning (_ ("weird stem size; check for narrow beams")); - + const int inf = 1000000; + Drul_array extpos; + extpos[DOWN] = inf; + extpos[UP] = -inf; - yextent_drul_[dir_] = se; - yextent_drul_[Direction(-dir_)] = head_positions()[-dir_]; -} + Drul_array exthead; + exthead[LEFT] = exthead[RIGHT] =0; + + for (SCM s = me->get_grob_property ("heads"); gh_pair_p (s); s = gh_cdr (s)) + { + Grob * n = unsmob_grob (gh_car (s)); -int -Stem::type_i () const -{ - return head_l_arr_[0]->balltype_i_; + + int p = int(Staff_symbol_referencer::position_f (n)); + + Direction d = LEFT; + do { + if (d* p > d* extpos[d]) + { + exthead[d] = n; + extpos[d] = p; + } + } while (flip (&d) != DOWN); + } + + return exthead; } void -Stem::add_head (Rhythmic_head *n) +Stem::add_head (Grob*me, Grob *n) { - n->add_dependency (this); // ? - if (Note_head *nh = dynamic_cast (n)) + n->set_grob_property ("stem", me->self_scm ()); + n->add_dependency (me); + + if (Note_head::has_interface (n)) { - head_l_arr_.push (nh); + Pointer_group_interface::add_element (me, "heads",n); } - else if (Rest *r = dynamic_cast (n)) + else { - rest_l_arr_.push (r); + n->set_grob_property ("rest", n->self_scm ()); } } bool -Stem::invisible_b () const +Stem::invisible_b (Grob*me) { - return (!head_l_arr_.size () || - head_l_arr_[0]->balltype_i_ <= 0); + return !(heads_i (me) && Rhythmic_head::balltype_i (support_head (me)) >= 1); } int -Stem::get_center_distance (Direction d) const +Stem::get_center_distance (Grob*me, Direction d) { int staff_center = 0; - int distance = d*(head_positions()[d] - staff_center); + int distance = (int) (d*(head_positions(me)[d] - staff_center)); return distance >? 0; } Direction -Stem::get_default_dir () const +Stem::get_default_dir (Grob*me) { - return (get_center_distance (UP) > - get_center_distance (DOWN)) - ? DOWN - : UP; -} + int du = get_center_distance (me,UP); + int dd = get_center_distance (me,DOWN); -Direction -Stem::get_dir () const -{ - return dir_; -} + if (sign (dd - du)) + return Direction (sign (dd -du)); -void -Stem::set_default_dir () -{ - dir_ = get_default_dir (); + return to_dir (me->get_grob_property ("default-neutral-direction")); } -void -Stem::set_default_stemlen () +Real +Stem::get_default_stem_end_position (Grob*me) { - Real internote_f = paper ()->internote_f (); - Real length_f = paper ()->get_var ("stem_length0") / internote_f; - Real shorten_f = paper ()->get_var ("forced_stem_shorten0") / internote_f; + bool grace_b = to_boolean (me->get_grob_property ("grace")); + SCM s; + Array a; + + Real length_f = 0.; + SCM scm_len = me->get_grob_property("length"); + if (gh_number_p (scm_len)) + { + length_f = gh_scm2double (scm_len); + } + else + { + s = me->get_grob_property("lengths"); + for (SCM q = s; q != SCM_EOL; q = gh_cdr (q)) + a.push (gh_scm2double (gh_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 = gh_cdr (q)) + a.push (gh_scm2double (gh_car (q))); - if (!dir_) - set_default_dir (); + + // stem uses half-spaces + + // fixme: use gh_list_ref () iso. array[] + Real shorten_f = a[((flag_i (me) - 2) >? 0) = 5) - length_f += 2.0; - if (flag_i_ >= 6) - length_f += 1.0; + + Real st = head_positions(me)[dir] + dir * length_f; - set_stemend ((dir_ > 0) ? head_positions()[BIGGER] + length_f: - head_positions()[SMALLER] - length_f); + 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; - if (dir_ * stem_end_f () < 0) - set_stemend (0); + return st; } -//xxx -void -Stem::set_default_extents () +/* + Number of hooks on the flag, ie. the log of the duration. + */ +int +Stem::flag_i (Grob*me) { - if (!stem_length_f ()) - set_default_stemlen (); - - - if (dir_ == UP) - stem_xdir_ = RIGHT; - if (invisible_b ()) - stem_xdir_ = CENTER; + SCM s = me->get_grob_property ("duration-log"); + return (gh_number_p (s)) ? gh_scm2int (s) : 2; } -/* - TODO - - move into note_column.cc - - */ void -Stem::set_noteheads () +Stem::position_noteheads (Grob*me) { - if (!head_l_arr_.size ()) + if (!heads_i (me)) return; - head_l_arr_.sort (Note_head::compare); - if (dir_ < 0) - head_l_arr_.reverse (); - - head_l_arr_[0]->extremal_i_ = -1; - head_l_arr_.top ()->extremal_i_ = 1; - int parity=1; - int lastpos = head_l_arr_[0]->position_i_; - for (int i=1; i < head_l_arr_.size (); i ++) + + Link_array heads = + Pointer_group_interface__extract_elements (me, (Grob*)0, "heads"); + + heads.sort (compare_position); + Direction dir =get_direction (me); + + if (dir < 0) + heads.reverse (); + + + Grob *hed = support_head (me); + Real w = hed->extent (hed, X_AXIS)[dir]; + for (int i=0; i < heads.size (); i++) + { + heads[i]->translate_axis (w - heads[i]->extent (heads[i], X_AXIS)[dir], X_AXIS); + } + + bool parity= true; // todo: make me settable. + int lastpos = int (Staff_symbol_referencer::position_f (heads[0])); + for (int i=1; i < heads.size (); i ++) { - int dy =abs (lastpos- head_l_arr_[i]->position_i_); + Real p = Staff_symbol_referencer::position_f (heads[i]); + int dy =abs (lastpos- (int)p); if (dy <= 1) { if (parity) - head_l_arr_[i]->x_dir_ = (stem_xdir_ == LEFT) ? LEFT : RIGHT; + { + Real l = heads[i]->extent (heads[i], X_AXIS).length (); + heads[i]->translate_axis (l * get_direction (me), X_AXIS); + } parity = !parity; } else - parity = 1; - lastpos = head_l_arr_[i]->position_i_; + parity = true; + + lastpos = int (p); } } +MAKE_SCHEME_CALLBACK(Stem,before_line_breaking,1); +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)) + { + me->remove_grob_property ("molecule-callback"); + // suicide(); + } + + set_spacing_hints (me); + return SCM_UNSPECIFIED; +} + + +/* + ugh. + When in a beam with tuplet brackets, brew_mol is called early, + caching a wrong value. + */ +MAKE_SCHEME_CALLBACK (Stem, height, 2); +SCM +Stem::height (SCM smob, SCM ax) +{ + Axis a = (Axis)gh_scm2int (ax); + Grob * me = unsmob_grob (smob); + assert ( a == Y_AXIS); + + SCM mol = me->get_uncached_molecule (); + Interval iv; + if (mol != SCM_EOL) + iv = unsmob_molecule (mol)->extent (a); + return ly_interval2scm (iv); +} + + +/** + set stem directions for hinting the optical spacing correction. + + Modifies DIR_LIST property of the Stem's Paper_column + + TODO: more advanced: supply height of noteheads as well, for more advanced spacing possibilities + */ void -Stem::do_pre_processing () +Stem::set_spacing_hints (Grob*me) { - if (yextent_drul_[DOWN]== yextent_drul_[UP]) - set_default_extents (); - set_noteheads (); - flag_i_ = flag_i_; - transparent_b_ = invisible_b (); - set_empty (invisible_b ()); + if (!invisible_b (me)) + { + SCM scmdir = gh_int2scm (get_direction (me)); + + Item* item = dynamic_cast (me); + Item * col = item->column_l (); + SCM dirlist =col->get_grob_property ("dir-list"); + if (scm_sloppy_memq (scmdir, dirlist) == SCM_BOOL_F) + { + dirlist = gh_cons (scmdir, dirlist); + col->set_grob_property ("dir-list", dirlist); + } + } } +Molecule +Stem::flag (Grob*me) +{ + String style; + SCM st = me->get_grob_property ("flag-style"); + if ( gh_string_p (st)) + { + style = ly_scm2string (st); + } -Interval -Stem::do_width () const + char c = (get_direction (me) == UP) ? 'u' : 'd'; + Molecule m = Font_interface::get_default_font (me)->find_by_name (String ("flags-") + to_str (c) + + to_str (flag_i (me))); + if (!style.empty_b ()) + m.add_molecule(Font_interface::get_default_font (me)->find_by_name (String ("flags-") + to_str (c) + style)); + return m; +} + +MAKE_SCHEME_CALLBACK(Stem,dim_callback,2); +SCM +Stem::dim_callback (SCM e, SCM ax) { + Axis a = (Axis) gh_scm2int (ax); + assert (a == X_AXIS); + Grob *se = unsmob_grob (e); Interval r (0, 0); - if (beam_l_ || abs (flag_i_) <= 2) + if (unsmob_grob (se->get_grob_property ("beam")) || abs (flag_i (se)) <= 2) ; // TODO! else { - r = lookup_l ()->flag (flag_i_, dir_).dim_.x (); - r += note_delta_f (); + r = flag (se).extent (X_AXIS); } - return r; + return ly_interval2scm ( r); } +MAKE_SCHEME_CALLBACK(Stem,brew_molecule,1); -const Real ANGLE = 20* (2.0*M_PI/360.0); // ugh! - -Molecule* -Stem::do_brew_molecule_p () const +SCM +Stem::brew_molecule (SCM smob) { - Molecule *mol_p =new Molecule; - Drul_array stem_y = yextent_drul_; - Real dy = paper ()->internote_f (); + Grob*me = unsmob_grob (smob); + Molecule mol; + Direction d = get_direction (me); + + + Real y1 = Staff_symbol_referencer::position_f (first_head (me)); + Real y2 = stem_end_position (me); + + Interval stem_y(y1,y2); + stem_y.unite (Interval (y2,y1)); + Real dy = Staff_symbol_referencer::staff_space (me)/2.0; Real head_wid = 0; - if (head_l_arr_.size ()) - head_wid = head_l_arr_[0]->extent (X_AXIS).length (); - stem_y[Direction(-dir_)] += dir_ * head_wid * tan(ANGLE)/(2*dy); - - if (!invisible_b ()) + + Real angle =0.0; + if (Grob *hed = support_head (me)) { - Molecule ss =lookup_l ()->stem (stem_y[DOWN]*dy, - stem_y[UP]*dy); - mol_p->add_molecule (ss); - } + head_wid = hed->extent (hed,X_AXIS).length (); - if (!beam_l_ && abs (flag_i_) > 2) + angle = gh_scm2double (hed->get_grob_property ("attachment-angle")); + } + stem_y[Direction(-d)] += d * head_wid * tan(angle)/(2*dy); + + if (!invisible_b (me)) { - Molecule fl = lookup_l ()->flag (flag_i_, dir_); - fl.translate_axis(stem_y[dir_]*dy, Y_AXIS); - mol_p->add_molecule (fl); + Real stem_width = gh_scm2double (me->get_grob_property ("thickness")) * me->paper_l ()->get_var ("stafflinethickness"); + 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 (head_l_arr_.size()) + if (!beam_l (me) && abs (flag_i (me)) > 2) { - mol_p->translate_axis (note_delta_f (), X_AXIS); + Molecule fl = flag (me); + fl.translate_axis(stem_y[d]*dy, Y_AXIS); + mol.add_molecule (fl); } - return mol_p; + + return mol.smobbed_copy (); } -Real -Stem::note_delta_f () const +/* + move the stem to right of the notehead if it is up. + */ +MAKE_SCHEME_CALLBACK(Stem,off_callback,2); +SCM +Stem::off_callback (SCM element_smob, SCM ) { + Grob *me = unsmob_grob (element_smob); + Real r=0; - if (head_l_arr_.size()) + if (Grob * f = first_head (me)) { - Interval head_wid(0, head_l_arr_[0]->extent (X_AXIS).length ()); - Real rule_thick(paper ()->rule_thickness ()); - Interval stem_wid(-rule_thick/2, rule_thick/2); - if (stem_xdir_ == CENTER) - r = head_wid.center (); - else - r = head_wid[stem_xdir_] - stem_wid[stem_xdir_]; + Interval head_wid(0, f->extent (f,X_AXIS).length ()); + + if (to_boolean (me->get_grob_property ("stem-centered"))) + return gh_double2scm ( head_wid.center ()); + + Real rule_thick = gh_scm2double (me->get_grob_property ("thickness")) * me->paper_l ()->get_var ("stafflinethickness"); + Direction d = get_direction (me); + r = head_wid[d] - d * rule_thick * 0.5; } - return r; + return gh_double2scm (r); } -Real -Stem::hpos_f () const + + +Grob* +Stem::beam_l (Grob*me) { - return note_delta_f () + Item::hpos_f (); + SCM b= me->get_grob_property ("beam"); + return unsmob_grob (b); } -/* - TODO: head_l_arr_/rest_l_arr_ in - */ -void -Stem::do_substitute_element_pointer (Score_element*o,Score_element*n) + +// ugh still very long. +Stem_info +Stem::calc_stem_info (Grob*me) { - if (Note_head*h=dynamic_cast (o)) - head_l_arr_.substitute (h, dynamic_cast(n)); - if (Rest *r=dynamic_cast (o)) - rest_l_arr_.substitute (r, dynamic_cast(n)); - if (Beam* b = dynamic_cast (o)) + Grob * beam = beam_l (me); + + Direction beam_dir = Directional_element_interface::get (beam); + if (!beam_dir) + { + programming_error ("Beam dir not set."); + beam_dir = UP; + } + + + 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; + + 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); + + Array a; + SCM s; + + s = me->get_grob_property("beamed-minimum-lengths"); + a.clear (); + for (SCM q = s; q != SCM_EOL; q = gh_cdr (q)) + a.push (gh_scm2double (gh_car (q))); + + + Real minimum_length = a[multiplicity get_grob_property ("beamed-lengths"); + + a.clear(); + for (SCM q = s; q != SCM_EOL; q = gh_cdr (q)) + a.push (gh_scm2double (gh_car (q))); + + Real stem_length = a[multiplicity (n); - if (!beam_l_) - { - beams_i_drul_[LEFT] = 0; - beams_i_drul_[RIGHT] = 0; - mult_i_ = 0; - } + info.idealy_f_ += thick + (multiplicity - 1) * interbeam_f; + } + info.miny_f_ = info.idealy_f_; + info.maxy_f_ = INT_MAX; + + info.idealy_f_ += stem_length; + info.miny_f_ += minimum_length; + + /* + lowest beam of (UP) beam must never be lower than second staffline + + 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. + + */ + 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 */ + { + 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; + } + + info.idealy_f_ = (info.maxy_f_ ? info.miny_f_; + + 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 ; + + return info; +} + +bool +Stem::has_interface (Grob*m) +{ + return m && m->has_interface (ly_symbol2scm ("stem-interface")); +} + +void +Stem::set_interface (Grob*me) +{ + me->set_interface (ly_symbol2scm ("stem-interface")); }