X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Ftie.cc;h=afdfd0240aa64c7110aa5ceb43a2a4d564da9aef;hb=402045837e7134cdf90d1fcf31768c62227a4936;hp=df313208cc6e0bee055aa4aae03b5e61e5882237;hpb=67a763d2c94cf4e24c01186d9f2df06b31778778;p=lilypond.git diff --git a/lily/tie.cc b/lily/tie.cc index df313208cc..afdfd0240a 100644 --- a/lily/tie.cc +++ b/lily/tie.cc @@ -3,163 +3,358 @@ source file of the GNU LilyPond music typesetter - (c) 1997--1999 Han-Wen Nienhuys + (c) 1997--2004 Han-Wen Nienhuys */ +#include + +#include "spanner.hh" +#include "lookup.hh" #include "paper-def.hh" #include "tie.hh" +#include "rhythmic-head.hh" +#include "bezier.hh" +#include "paper-column.hh" +#include "warn.hh" +#include "staff-symbol-referencer.hh" +#include "directional-element-interface.hh" +#include "stencil.hh" +#include "bezier-bow.hh" +#include "stem.hh" #include "note-head.hh" -#include "p-col.hh" -#include "debug.hh" +#include "tie-column.hh" + +/* + tie: Connect two noteheads. + + What if we have + + c4 ~ \clef bass ; c4 or + + c4 \staffchange c4 + do we have non-horizontal ties then? + */ void -Tie::set_head (Direction d, Note_head * head_l) +Tie::set_head (Grob*me,Direction d, Grob * h) +{ + assert (!head (me,d)); + index_set_cell (me->get_grob_property ("head-pair"), d, h->self_scm ()); + + dynamic_cast (me)->set_bound (d, h); + me->add_dependency (h); +} + +void +Tie::set_interface (Grob*me) +{ + me->set_grob_property ("head-pair", gh_cons (SCM_EOL, SCM_EOL)); +} + + +Grob* +Tie::head (Grob*me, Direction d) { - assert (!head_l_drul_[d]); - head_l_drul_[d] = head_l; - set_bounds (d, head_l); + SCM c = me->get_grob_property ("head-pair"); - add_dependency (head_l); + if (gh_pair_p (c)) + return unsmob_grob (index_get_cell (c, d)); + else + return 0; } -Tie::Tie() +Real +Tie::get_position (Grob*me) { - head_l_drul_[RIGHT] =0; - head_l_drul_[LEFT] =0; - same_pitch_b_ =false; + Direction d = head (me,LEFT) ? LEFT:RIGHT; + return Staff_symbol_referencer::get_position (head (me,d)); } /* - ugh: direction of the Tie is more complicated. See [Ross] p136 and further - */ -void -Tie::set_default_dir() + Default: Put the tie oppositie of the stem [Wanske p231] + + In case of chords: Tie_column takes over + + The direction of the Tie is more complicated (See [Ross] p136 and + further). + + (what about linebreaks? ) + +*/ +Direction +Tie::get_default_dir (Grob*me) { - int m= (head_l_drul_[LEFT]->position_i_ - + head_l_drul_[RIGHT]->position_i_) /2; - dir_ = (m < 0)? DOWN : UP; + Item * sl = head (me,LEFT) ? Rhythmic_head::get_stem (head (me,LEFT)) :0; + Item * sr = head (me,RIGHT) ? Rhythmic_head::get_stem (head (me,RIGHT)) :0; + if (sl && sr) + { + if (get_grob_direction (sl) == UP + && get_grob_direction (sr) == UP) + return DOWN; + } + else if (sl || sr) + { + Item *s = sl ? sl : sr; + return - get_grob_direction (s); + } + + + return UP; } + void -Tie::do_add_processing() +Tie::set_direction (Grob*me) { - if (!(head_l_drul_[LEFT] && head_l_drul_[RIGHT])) - warning (_ ("lonely tie")); - - Direction d = LEFT; - Drul_array new_head_drul = head_l_drul_; - do { - if (!head_l_drul_[d]) - new_head_drul[d] = head_l_drul_[(Direction)-d]; - } while (flip(&d) != LEFT); - head_l_drul_ = new_head_drul; + if (!get_grob_direction (me)) + { + if (Tie_column::has_interface (me->get_parent (Y_AXIS))) + Tie_column::set_directions (me->get_parent (Y_AXIS)); + else + set_grob_direction (me, Tie::get_default_dir (me)); + } } -void -Tie::do_post_processing() -{ - // URG: share code with slur! - assert (head_l_drul_[LEFT] || head_l_drul_[RIGHT]); +/* + TODO: we should also use thickness for computing the clearance + between head and tie. Very thick ties will now touch the note head. + + */ +SCM +Tie::get_control_points (SCM smob) +{ + Spanner*me = unsmob_spanner (smob); + Direction headdir = CENTER; + if (head (me,LEFT)) + headdir = LEFT; + else if (head (me,RIGHT)) + headdir = RIGHT; + else + { + programming_error ("Tie without heads."); + me->suicide (); + return SCM_EOL; + } - // URG - Real notewidth = paper_l ()->note_width () * 0.8; - Real interline_f = paper_l ()->get_realvar (interline_scm_sym); + set_direction (me); - /* - [OSU]: slur and tie placement + Direction dir = get_grob_direction (me); + + Real staff_space = Staff_symbol_referencer::staff_space (me); - ties: - * x = inner raakpunt - d * gap + Real x_gap_f = robust_scm2double (me->get_grob_property ("x-gap"), 0); - * y = length < 5ss : horizontal raakpunt - y = length >= 5ss : y next interline - d * 0.25 ss - --> height <= 5 length ?? we use <= 3 length, now... - */ + Grob* l = me->get_bound (LEFT); + Grob* r = me->get_bound (RIGHT); - Real gap_f = paper_l ()->get_var ("slur_x_gap"); + Grob* commonx = me->common_refpoint (l, X_AXIS); + commonx = me->common_refpoint (r, X_AXIS); + + Real left_x; - Direction d = LEFT; - do + /* + the tie has to be long enough to be visible, but should not go + through key sigs. In the 1.5 series the pref.matter - note + distance is fixed , so this won't be a problem anymore. + */ + Real lambda = 0.9; + + if (Note_head::has_interface (l)) { - dy_f_drul_[d] = .5 * interline_f * (head_l_drul_[d] - ? head_l_drul_[d]->position_i_ - : head_l_drul_[(Direction)-d]->position_i_); + Real where = RIGHT; + + /* + This correction is due te the shape of the black note head. + */ + if (Rhythmic_head::duration_log (l) == 2) + where += dir* 0.2; + left_x = l->extent (l, X_AXIS).linear_combination (where) + + x_gap_f; } - while (flip(&d) != LEFT); + else + left_x = l->extent (l, X_AXIS).linear_combination (lambda); + - do + Real width; + if (Note_head::has_interface (l) && Note_head::has_interface (r)) { - // tie attached to outer notehead - if (head_l_drul_[d] - && head_l_drul_[d]->remove_elt_property (extremal_scm_sym) != SCM_BOOL_F) - { - if (d == LEFT) - dx_f_drul_[d] += notewidth; - dx_f_drul_[d] += -d * gap_f; - /* attach to outer 3/4 end of head */ - dy_f_drul_[d] += dir_ * 0.25 * interline_f; - } - // tie attached to inner notehead - else if (head_l_drul_[d] && d == LEFT) - { - dx_f_drul_[d] += -d * notewidth; - } - // uhm? loose end of tie // tie attached to stem + width = + + r->extent (commonx,X_AXIS)[LEFT] + - l->extent (commonx, X_AXIS)[RIGHT] + -2 * x_gap_f; + } + else + { + if (Note_head::has_interface (l)) + width = r->relative_coordinate (commonx, X_AXIS) + - l->extent (commonx, X_AXIS)[RIGHT] + - 2 * x_gap_f; else - { - dx_f_drul_[d] = -d * (spanned_drul_[d]->extent (X_AXIS).length () - -0.5 * notewidth); - } + width = + - l->extent (commonx, X_AXIS).linear_combination (lambda) + + r->extent (commonx, X_AXIS)[LEFT] + - 2 * x_gap_f; } - while (flip(&d) != LEFT); + - // now that both are set, do dependent - do + + SCM details = me->get_grob_property ("details"); + + SCM lim // groetjes aan de chirurgendochter. + = scm_assq (ly_symbol2scm ("height-limit"),details); + + Real h_inf = gh_scm2double (ly_cdr (lim)) * staff_space; + Real r_0 = gh_scm2double (ly_cdr (scm_assq (ly_symbol2scm ("ratio"),details))); + + Bezier b = slur_shape (width, h_inf, r_0); + + /* + I think this better, particularly for small ties. It always allows the user to move ties if + they seem in the wrong place + + TODO: what if 2 heads have different size. + + */ + + Real ypos = Tie::get_position (me) * staff_space/2 + + dir * gh_scm2double (me->get_grob_property ("y-offset"));; + + /* + Make sure we don't start on a dots + */ + if (Note_head::has_interface (l) && Rhythmic_head::get_dots (l)) { - // tie attached to outer notehead - if (!head_l_drul_[d]) + Grob* dots = Rhythmic_head::get_dots (l); + if(fabs (staff_space * Staff_symbol_referencer::get_position (dots) /2 + - ypos) < 0.5) { - dy_f_drul_[d] = dy_f_drul_[(Direction) -d]; + ypos += 0.5 * dir ; } } - while (flip(&d) != LEFT); + + + /* + todo: prevent ending / staffline collision. + + todo: tie / stem collision + */ + + b = slur_shape (width,h_inf, r_0); + b.scale (1, dir); + b.translate (Offset (left_x, ypos)); + /* - Avoid too steep ties - * slur from notehead to stemend: c''()b'' + Avoid colliding of the horizontal part with stafflines. + + + TODO: redo this, heuristic is half-baken, and ties often look ugly + as a result. + + TODO: doesn't work when on staff with even number of lines. */ - Real damp_f = paper_l ()->get_var ("tie_slope_damping"); - Offset d_off = Offset (dx_f_drul_[RIGHT] - dx_f_drul_[LEFT], - dy_f_drul_[RIGHT] - dy_f_drul_[LEFT]); - d_off.x () += extent (X_AXIS).length (); - - Real ratio_f = abs (d_off.y () / d_off.x ()); - if (ratio_f > damp_f) - dy_f_drul_[(Direction)(- dir_ * sign (d_off.y ()))] += - dir_ * (ratio_f - damp_f) * d_off.x (); -} + Array horizontal (b.solve_derivative (Offset (1,0))); + if (horizontal.size ()) + { + /* + ugh. Doesnt work for non-horizontal curves. + */ + Real y = b.curve_point (horizontal[0])[Y_AXIS]; -void -Tie::do_substitute_element_pointer (Score_element*o, Score_element*n) -{ - Note_head *new_l =n?dynamic_cast (n):0; - if (dynamic_cast (o) == head_l_drul_[LEFT]) - head_l_drul_[LEFT] = new_l; - else if (dynamic_cast (o) == head_l_drul_[RIGHT]) - head_l_drul_[RIGHT] = new_l; + Real ry = rint (y/staff_space) * staff_space; + Real diff = ry - y; + Real newy = y; + + Real clear = staff_space * gh_scm2double (me->get_grob_property ("staffline-clearance")); + + if (fabs (y) <= + Staff_symbol_referencer::staff_radius (me) * staff_space + clear + && fabs (diff) < clear) + { + Real y1 = ry + clear; + Real y2 = ry - clear; + + /* + ugh, we shove the 0.5 out of our sleeves. + + Any way. This test is to make sure that staffline + collision avoidance does not result in completely flat + ties. + */ + if (fabs (y1 - ypos) < 0.5) + y1 = y2; + else if (fabs (y2 - ypos) < 0.5) + y2 = y1; + + newy = (fabs (y1 - y) < fabs (y2 - y)) ? y1 : y2; + + // newy = ry - 0.5 * staff_space * sign (diff) ; + + /* + we don't want horizontal ties + */ + if (fabs (newy - b.control_[0][Y_AXIS]) < 1e-2) + { + newy = newy + dir * staff_space; + } + } + + Real y0 = b.control_ [0][Y_AXIS]; + b.control_[2][Y_AXIS] = + b.control_[1][Y_AXIS] = + (b.control_[1][Y_AXIS] - y0) * ((newy - y0) / (y - y0)) + y0; + } + else + programming_error ("Tie is nowhere horizontal"); + + + + SCM controls = SCM_EOL; + for (int i= 4; i--;) + controls = gh_cons (ly_offset2scm (b.control_[i]), controls); + return controls; } -Array -Tie::get_rods () const +MAKE_SCHEME_CALLBACK (Tie,print,1); +SCM +Tie::print (SCM smob) { - Array a; - Rod r; - r.item_l_drul_ = spanned_drul_; - r.distance_f_ = paper_l ()->get_var ("tie_x_minimum"); - a.push (r); - return a; + Grob*me = unsmob_grob (smob); + + SCM cp = me->get_grob_property ("control-points"); + if (!gh_pair_p (cp)) // list is more accurate + { + cp = get_control_points (smob); + me->set_grob_property ("control-points", cp); + } + + if (!gh_pair_p (cp)) + return Stencil ().smobbed_copy (); + + Real thick + = Staff_symbol_referencer::line_thickness (me) + * robust_scm2double (me->get_grob_property ("thickness"), 1); + + Bezier b; + int i = 0; + for (SCM s= cp; s != SCM_EOL; s = ly_cdr (s)) + { + b.control_[i] = ly_scm2offset (ly_car (s)); + i++; + } + + Stencil a = Lookup::slur (b, get_grob_direction (me) * thick, thick); + + return a.smobbed_copy (); } + + + +ADD_INTERFACE (Tie,"tie-interface", + "A tie connecting two noteheads.\n" +"direction = Forced direction for all ties", + "y-offset staffline-clearance control-points head-pair details thickness x-gap direction minimum-length");