X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fstem.cc;h=68c437ab1c0aadd5c99e9e2775f3bfef4c6d8502;hb=829caefcc215ddffe25806d0ff87bcc577c3286e;hp=e14fc302bef1dbbfc282e5bdabfdcf764530a668;hpb=fd58a98a46a3def26b80a895f1f7b81c92590fc3;p=lilypond.git diff --git a/lily/stem.cc b/lily/stem.cc index e14fc302be..68c437ab1c 100644 --- a/lily/stem.cc +++ b/lily/stem.cc @@ -3,7 +3,7 @@ source file of the GNU LilyPond music typesetter - (c) 1996--2003 Han-Wen Nienhuys + (c) 1996--2004 Han-Wen Nienhuys Jan Nieuwenhuizen TODO: This is way too hairy @@ -23,7 +23,7 @@ #include "paper-def.hh" #include "rhythmic-head.hh" #include "font-interface.hh" -#include "molecule.hh" +#include "stencil.hh" #include "paper-column.hh" #include "misc.hh" #include "beam.hh" @@ -38,16 +38,16 @@ void Stem::set_beaming (Grob*me, int beam_count, Direction d) { - SCM pair = me->get_grob_property ("beaming"); + SCM pair = me->get_property ("beaming"); if (!gh_pair_p (pair)) { pair = gh_cons (SCM_EOL, SCM_EOL); - me->set_grob_property ("beaming", pair); + me->set_property ("beaming", pair); } SCM l = index_get_cell (pair, d); - for( int i = 0; i< beam_count; i++) + for (int i = 0; i< beam_count; i++) { l = gh_cons (gh_int2scm (i), l); } @@ -81,12 +81,12 @@ Stem::chord_start_y (Grob*me) Real Stem::stem_end_position (Grob*me) { - SCM p =me->get_grob_property ("stem-end-position"); + SCM p =me->get_property ("stem-end-position"); Real pos; if (!gh_number_p (p)) { pos = get_default_stem_end_position (me); - me->set_grob_property ("stem-end-position", gh_double2scm (pos)); + me->set_property ("stem-end-position", gh_double2scm (pos)); } else pos = gh_scm2double (p); @@ -118,7 +118,7 @@ Stem::set_stemend (Grob*me, Real se) if (d && d * head_positions (me)[get_direction (me)] >= se*d) me->warning (_ ("Weird stem size; check for narrow beams")); - me->set_grob_property ("stem-end-position", gh_double2scm (se)); + me->set_property ("stem-end-position", gh_double2scm (se)); } @@ -136,7 +136,7 @@ Stem::support_head (Grob*me) UGH. */ - return unsmob_grob (ly_car (me->get_grob_property ("note-heads"))); + return unsmob_grob (ly_car (me->get_property ("note-heads"))); } else return first_head (me); @@ -189,12 +189,12 @@ Stem::extremal_heads (Grob*me) Drul_array exthead; exthead[LEFT] = exthead[RIGHT] =0; - for (SCM s = me->get_grob_property ("note-heads"); gh_pair_p (s); s = ly_cdr (s)) + for (SCM s = me->get_property ("note-heads"); gh_pair_p (s); s = ly_cdr (s)) { Grob * n = unsmob_grob (ly_car (s)); - int p = int (Staff_symbol_referencer::get_position (n)); + int p = Staff_symbol_referencer::get_rounded_position (n); Direction d = LEFT; do { @@ -215,14 +215,17 @@ icmp (int const &a, int const &b) return a-b; } +/* + The positions, in ascending order. + */ Array Stem::note_head_positions (Grob *me) { Array ps ; - for (SCM s = me->get_grob_property ("note-heads"); gh_pair_p (s); s = ly_cdr (s)) + for (SCM s = me->get_property ("note-heads"); gh_pair_p (s); s = ly_cdr (s)) { Grob * n = unsmob_grob (ly_car (s)); - int p = int (Staff_symbol_referencer::get_position (n)); + int p = Staff_symbol_referencer::get_rounded_position (n); ps.push (p); } @@ -235,7 +238,7 @@ Stem::note_head_positions (Grob *me) void Stem::add_head (Grob*me, Grob *n) { - n->set_grob_property ("stem", me->self_scm ()); + n->set_property ("stem", me->self_scm ()); n->add_dependency (me); /* @@ -248,10 +251,10 @@ Stem::add_head (Grob*me, Grob *n) } bool -Stem::invisible_b (Grob*me) +Stem::is_invisible (Grob*me) { return ! (head_count (me) - && gh_scm2int (me->get_grob_property ("duration-log")) >= 1); + && gh_scm2int (me->get_property ("duration-log")) >= 1); } Direction @@ -259,7 +262,7 @@ Stem::get_default_dir (Grob*me) { int staff_center = 0; Interval hp = head_positions (me); - if (hp.empty_b()) + if (hp.is_empty ()) { return CENTER; } @@ -270,7 +273,7 @@ Stem::get_default_dir (Grob*me) if (sign (ddistance - udistance)) return Direction (sign (ddistance -udistance)); - return to_dir (me->get_grob_property ("neutral-direction")); + return to_dir (me->get_property ("neutral-direction")); } Real @@ -285,22 +288,20 @@ Stem::get_default_stem_end_position (Grob*me) Real length = 7; // WARNING: IN HALF SPACES - SCM scm_len = me->get_grob_property ("length"); + SCM scm_len = me->get_property ("length"); if (gh_number_p (scm_len)) { length = gh_scm2double (scm_len); } else { - s = me->get_grob_property ("lengths"); + s = me->get_property ("lengths"); if (gh_pair_p (s)) { length = 2* gh_scm2double (robust_list_ref (durlog -2, s)); } } - - /* URGURGURG 'set-default-stemlen' sets direction too */ @@ -311,25 +312,18 @@ Stem::get_default_stem_end_position (Grob*me) set_grob_direction (me, dir); } - /* stems in unnatural (forced) direction should be shortened, according to [Roush & Gourlay] */ - if (!chord_start_y (me) - || (get_direction (me) != get_default_dir (me))) + if (dir * head_positions (me)[dir] >= 0) { - - Real shorten = 0.0; - - SCM sshorten = me->get_grob_property ("stem-shorten"); + SCM sshorten = me->get_property ("stem-shorten"); SCM scm_shorten = gh_pair_p (sshorten) ? robust_list_ref ((duration_log (me) - 2) >? 0, sshorten): SCM_EOL; - if (gh_number_p (scm_shorten)) - { - shorten = 2* gh_scm2double (scm_shorten); - } + Real shorten = 2* robust_scm2double (scm_shorten,0); + /* On boundary: shorten only half */ - if (abs (head_positions (me)[get_direction (me)]) <= 1) + if (abs (head_positions (me)[dir]) <= 1) shorten *= 0.5; length -= shorten; @@ -338,25 +332,25 @@ Stem::get_default_stem_end_position (Grob*me) /* Tremolo stuff: */ - Grob * trem = unsmob_grob (me->get_grob_property ("tremolo-flag")); - if (trem && !unsmob_grob (me->get_grob_property ("beam"))) + Grob * trem = unsmob_grob (me->get_property ("tremolo-flag")); + if (trem && !unsmob_grob (me->get_property ("beam"))) { /* Crude hack: add extra space if tremolo flag is there. We can't do this for the beam, since we get into a loop - (Stem_tremolo::raw_molecule() looks at the beam.) + (Stem_tremolo::raw_stencil () looks at the beam.) --hwn */ Real minlen = - 1.0 + 2 * Stem_tremolo::raw_molecule (trem).extent (Y_AXIS).length () / ss; + 1.0 + 2 * Stem_tremolo::raw_stencil (trem).extent (Y_AXIS).length () / ss; if (durlog >= 3) { Interval flag_ext = flag (me).extent (Y_AXIS) ; - if (!flag_ext.empty_b()) + if (!flag_ext.is_empty ()) minlen += 2 * flag_ext.length () / ss ; /* @@ -376,7 +370,7 @@ Stem::get_default_stem_end_position (Grob*me) /* TODO: change name to extend-stems to staff/center/'() */ - bool no_extend_b = to_boolean (me->get_grob_property ("no-stem-extend")); + bool no_extend_b = to_boolean (me->get_property ("no-stem-extend")); if (!no_extend_b && dir * st < 0) // junkme? st = 0.0; @@ -434,7 +428,7 @@ Stem::get_default_stem_end_position (Grob*me) int Stem::duration_log (Grob*me) { - SCM s = me->get_grob_property ("duration-log"); + SCM s = me->get_property ("duration-log"); return (gh_number_p (s)) ? gh_scm2int (s) : 2; } @@ -454,8 +448,7 @@ Stem::position_noteheads (Grob*me) heads.reverse (); - Real thick = gh_scm2double (me->get_grob_property ("thickness")) - * me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness")); + Real thick = thickness (me); Grob *hed = support_head (me); Real w = Note_head::head_extent (hed,X_AXIS)[dir]; @@ -466,13 +459,17 @@ Stem::position_noteheads (Grob*me) } bool parity= true; - int lastpos = int (Staff_symbol_referencer::get_position (heads[0])); + Real lastpos = Real (Staff_symbol_referencer::get_position (heads[0])); for (int i=1; i < heads.size (); i ++) { Real p = Staff_symbol_referencer::get_position (heads[i]); - int dy =abs (lastpos- (int)p); + Real dy =fabs (lastpos- p); - if (dy <= 1) + /* + dy should always be 0.5, 0.0, 1.0, but provide safety margin + for rounding errors. + */ + if (dy < 1.1) { if (parity) { @@ -492,7 +489,7 @@ Stem::position_noteheads (Grob*me) Real reverse_overlap =0.5; heads[i]->translate_axis ((l-thick*reverse_overlap) * d, X_AXIS); - if (invisible_b(me)) + if (is_invisible (me)) heads[i]->translate_axis (-thick*(2 - reverse_overlap) * d , X_AXIS); @@ -537,7 +534,7 @@ Stem::before_line_breaking (SCM smob) } else { - me->set_grob_property ("molecule-callback", SCM_EOL); + me->set_property ("print-function", SCM_EOL); } return SCM_UNSPECIFIED; @@ -556,10 +553,10 @@ Stem::height (SCM smob, SCM ax) Grob * me = unsmob_grob (smob); assert (a == Y_AXIS); - SCM mol = me->get_uncached_molecule (); + SCM mol = me->get_uncached_stencil (); Interval iv; if (mol != SCM_EOL) - iv = unsmob_molecule (mol)->extent (a); + iv = unsmob_stencil (mol)->extent (a); if (Grob *b =get_beam (me)) { Direction d = get_direction (me); @@ -570,7 +567,7 @@ Stem::height (SCM smob, SCM ax) } -Molecule +Stencil Stem::flag (Grob*me) { /* TODO: maybe property stroke-style should take different values, @@ -578,7 +575,7 @@ Stem::flag (Grob*me) '() or "grace"). */ String flag_style; - SCM flag_style_scm = me->get_grob_property ("flag-style"); + SCM flag_style_scm = me->get_property ("flag-style"); if (gh_symbol_p (flag_style_scm)) { flag_style = ly_symbol2string (flag_style_scm); @@ -586,10 +583,10 @@ Stem::flag (Grob*me) if (flag_style == "no-flag") { - return Molecule (); + return Stencil (); } - bool adjust = to_boolean (me->get_grob_property ("adjust-if-on-staffline")); + bool adjust = true; String staffline_offs; if (String::compare (flag_style, "mensural") == 0) @@ -605,7 +602,7 @@ Stem::flag (Grob*me) { /* Urrgh! We have to detect wether this stem ends on a staff line or between two staff lines. But we can not call - stem_end_position(me) or get_default_stem_end_position(me), + stem_end_position (me) or get_default_stem_end_position (me), since this encounters the flag and hence results in an infinite recursion. However, in pure mensural notation, there are no multiple note heads attached to a single stem, @@ -627,7 +624,7 @@ Stem::flag (Grob*me) --hwn. */ - int p = (int)rint (Staff_symbol_referencer::get_position (first_head (me))); + int p = Staff_symbol_referencer::get_rounded_position (me); staffline_offs = Staff_symbol_referencer::on_staffline (me, p) ? "1" : "0"; } @@ -645,27 +642,27 @@ Stem::flag (Grob*me) String font_char = flag_style + to_string (dir) + staffline_offs + to_string (duration_log (me)); Font_metric *fm = Font_interface::get_default_font (me); - Molecule flag = fm->find_by_name ("flags-" + font_char); - if (flag.empty_b ()) + Stencil flag = fm->find_by_name ("flags-" + font_char); + if (flag.is_empty ()) { me->warning (_f ("flag `%s' not found", font_char)); } - SCM stroke_style_scm = me->get_grob_property ("stroke-style"); + SCM stroke_style_scm = me->get_property ("stroke-style"); if (gh_string_p (stroke_style_scm)) { String stroke_style = ly_scm2string (stroke_style_scm); - if (!stroke_style.empty_b ()) + if (!stroke_style.is_empty ()) { String font_char = to_string (dir) + stroke_style; - Molecule stroke = fm->find_by_name ("flags-" + font_char); - if (stroke.empty_b ()) + Stencil stroke = fm->find_by_name ("flags-" + font_char); + if (stroke.is_empty ()) { me->warning (_f ("flag stroke `%s' not found", font_char)); } else { - flag.add_molecule (stroke); + flag.add_stencil (stroke); } } } @@ -681,46 +678,45 @@ Stem::dim_callback (SCM e, SCM ax) assert (a == X_AXIS); Grob *me = unsmob_grob (e); Interval r (0, 0); - if (unsmob_grob (me->get_grob_property ("beam")) || abs (duration_log (me)) <= 2) + if (unsmob_grob (me->get_property ("beam")) || abs (duration_log (me)) <= 2) ; // TODO! else { r = flag (me).extent (X_AXIS) - + - gh_scm2double (me->get_grob_property ("thickness")) - * me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness"))/2; + + thickness (me)/2; } return ly_interval2scm (r); } +Real +Stem::thickness (Grob* me) +{ + return gh_scm2double (me->get_property ("thickness")) + * Staff_symbol_referencer::line_thickness (me); +} - -MAKE_SCHEME_CALLBACK (Stem,brew_molecule,1); +MAKE_SCHEME_CALLBACK (Stem,print,1); SCM -Stem::brew_molecule (SCM smob) +Stem::print (SCM smob) { Grob*me = unsmob_grob (smob); - Molecule mol; + Stencil mol; Direction d = get_direction (me); - - /* - TODO: make the stem start a direction ? + TODO: make the stem start a direction ? This is required to avoid stems passing in tablature chords... */ - Grob *lh = to_boolean (me->get_grob_property ("avoid-note-head")) + Grob *lh = to_boolean (me->get_property ("avoid-note-head")) ? last_head (me) : lh = first_head (me); if (!lh) return SCM_EOL; - if (invisible_b (me)) - { - return SCM_EOL; - } + if (is_invisible (me)) + return SCM_EOL; Real y1 = Staff_symbol_referencer::get_position (lh); Real y2 = stem_end_position (me); @@ -737,7 +733,7 @@ Stem::brew_molecule (SCM smob) must not take ledgers into account. */ Interval head_height = Note_head::head_extent (hed,Y_AXIS); - Real y_attach = Note_head::stem_attachment_coordinate ( hed, Y_AXIS); + Real y_attach = Note_head::stem_attachment_coordinate (hed, Y_AXIS); y_attach = head_height.linear_combination (y_attach); stem_y[Direction (-d)] += d * y_attach/dy; @@ -745,23 +741,22 @@ Stem::brew_molecule (SCM smob) // URG - Real stem_width = gh_scm2double (me->get_grob_property ("thickness")) - * me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness")); + Real stem_width = thickness (me); Real blot = - me->get_paper ()->get_realvar (ly_symbol2scm ("blotdiameter")); + me->get_paper ()->get_dimension (ly_symbol2scm ("blotdiameter")); Box b = Box (Interval (-stem_width/2, stem_width/2), Interval (stem_y[DOWN]*dy, stem_y[UP]*dy)); - Molecule ss = Lookup::round_filled_box (b, blot); - mol.add_molecule (ss); + Stencil ss = Lookup::round_filled_box (b, blot); + mol.add_stencil (ss); if (!get_beam (me) && abs (duration_log (me)) > 2) { - Molecule fl = flag (me); + Stencil fl = flag (me); fl.translate_axis (stem_y[d]*dy - d * blot/2, Y_AXIS); fl.translate_axis (stem_width/2, X_AXIS); - mol.add_molecule (fl); + mol.add_stencil (fl); } return mol.smobbed_copy (); @@ -785,17 +780,16 @@ Stem::off_callback (SCM element_smob, SCM) if (Grob * f = first_head (me)) { - Interval head_wid = Note_head::head_extent(f, X_AXIS); - + Interval head_wid = Note_head::head_extent (f, X_AXIS); Real attach =0.0; - if (invisible_b (me)) + if (is_invisible (me)) { attach = 0.0; } else - attach = Note_head::stem_attachment_coordinate(f, X_AXIS); + attach = Note_head::stem_attachment_coordinate (f, X_AXIS); Direction d = get_direction (me); @@ -809,9 +803,7 @@ Stem::off_callback (SCM element_smob, SCM) if (attach) { Real rule_thick - = gh_scm2double (me->get_grob_property ("thickness")) - * me->get_paper ()->get_realvar (ly_symbol2scm ("linethickness")); - + = thickness (me); r += - d * rule_thick * 0.5; } @@ -819,10 +811,11 @@ Stem::off_callback (SCM element_smob, SCM) return gh_double2scm (r); } + Grob* Stem::get_beam (Grob*me) { - SCM b= me->get_grob_property ("beam"); + SCM b= me->get_property ("beam"); return unsmob_grob (b); } @@ -830,11 +823,11 @@ Stem_info Stem::get_stem_info (Grob *me) { /* Return cached info if available */ - SCM scm_info = me->get_grob_property ("stem-info"); + SCM scm_info = me->get_property ("stem-info"); if (!gh_pair_p (scm_info)) { calc_stem_info (me); - scm_info = me->get_grob_property ("stem-info"); + scm_info = me->get_property ("stem-info"); } Stem_info si; @@ -852,15 +845,22 @@ void Stem::calc_stem_info (Grob *me) { Direction my_dir = get_grob_direction (me); + + if (!my_dir) + { + programming_error ("No stem dir set?"); + my_dir = UP; + } + Real staff_space = Staff_symbol_referencer::staff_space (me); Grob *beam = get_beam (me); Real beam_translation = Beam::get_beam_translation (beam); - Real beam_thickness = gh_scm2double (beam->get_grob_property ("thickness")); + Real beam_thickness = Beam::get_thickness (beam); int beam_count = Beam::get_direction_beam_count (beam, my_dir); /* Simple standard stem length */ - SCM lengths = me->get_grob_property ("beamed-lengths"); + SCM lengths = me->get_property ("beamed-lengths"); Real ideal_length = gh_scm2double (robust_list_ref (beam_count - 1,lengths)) @@ -869,7 +869,7 @@ Stem::calc_stem_info (Grob *me) - 0.5 * beam_thickness; /* Condition: sane minimum free stem length (chord to beams) */ - lengths = me->get_grob_property ("beamed-minimum-free-lengths"); + lengths = me->get_property ("beamed-minimum-free-lengths"); Real ideal_minimum_free = gh_scm2double (robust_list_ref (beam_count - 1, lengths)) * staff_space; @@ -897,7 +897,7 @@ Stem::calc_stem_info (Grob *me) Real note_start = /* staff positions */ head_positions (me)[my_dir] * 0.5 - * my_dir; + * my_dir * staff_space; Real ideal_y = note_start + ideal_length; @@ -916,9 +916,9 @@ Stem::calc_stem_info (Grob *me) Obviously not for grace beams. Also, not for knees. Seems to be 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 (!no_extend_b && !knee_b) + bool no_extend_b = to_boolean (me->get_property ("no-stem-extend")); + bool is_knee = to_boolean (beam->get_property ("knee")); + if (!no_extend_b && !is_knee) { /* Highest beam of (UP) beam must never be lower than middle staffline */ @@ -929,14 +929,12 @@ Stem::calc_stem_info (Grob *me) } - SCM shorten = beam->get_grob_property ("shorten"); - if (gh_number_p (shorten)) - ideal_y -= gh_scm2double (shorten); + ideal_y -= robust_scm2double (beam->get_property ("shorten"), 0); Real minimum_free = gh_scm2double (robust_list_ref (beam_count - 1, - me->get_grob_property + me->get_property ("beamed-extreme-minimum-free-lengths"))) * staff_space; @@ -945,13 +943,13 @@ Stem::calc_stem_info (Grob *me) /* stem only extends to center of beam */ - 0.5 * beam_thickness; - Real minimum_y = note_start + minimum_length; + Real minimum_y = note_start + minimum_length; ideal_y *= my_dir; Real shortest_y = minimum_y * my_dir; - me->set_grob_property ("stem-info", + me->set_property ("stem-info", scm_list_n (gh_double2scm (ideal_y), gh_double2scm (shortest_y), SCM_UNDEFINED)); @@ -960,7 +958,7 @@ Stem::calc_stem_info (Grob *me) Slice Stem::beam_multiplicity (Grob *stem) { - SCM beaming= stem->get_grob_property ("beaming"); + SCM beaming= stem->get_property ("beaming"); Slice l = int_list_to_slice (gh_car (beaming)); Slice r = int_list_to_slice (gh_cdr (beaming)); l.unite (r); @@ -973,9 +971,14 @@ Stem::beam_multiplicity (Grob *stem) these are too many props. */ ADD_INTERFACE (Stem,"stem-interface", - "A stem", + "The stem represent the graphical stem. " + " In addition, it internally connects note heads, beams, tremolos. Rests " + " and whole notes have invisible stems." + +, + "tremolo-flag french-beaming " - "avoid-note-head adjust-if-on-staffline thickness " + "avoid-note-head thickness " "stem-info beamed-lengths beamed-minimum-free-lengths " "beamed-extreme-minimum-free-lengths lengths beam stem-shorten " "duration-log beaming neutral-direction stem-end-position " @@ -983,3 +986,18 @@ ADD_INTERFACE (Stem,"stem-interface", "no-stem-extend stroke-style"); + +/****************************************************************/ + +Stem_info::Stem_info () +{ + ideal_y_ = shortest_y_ =0; + dir_ = CENTER; +} + +void +Stem_info::scale (Real x) +{ + ideal_y_ *= x; + shortest_y_ *= x; +}