X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Frest-collision.cc;h=ea9dba5010deaf58d060ac1a81998029ac254b72;hb=791feccaca7f6dd5c11773c766e94ab5f757993c;hp=be3edfdabc171b1ceea56c5e56fd1d9313657d5c;hpb=e0833e924a7b626154c66170d98335c6c4985dfe;p=lilypond.git diff --git a/lily/rest-collision.cc b/lily/rest-collision.cc index be3edfdabc..ea9dba5010 100644 --- a/lily/rest-collision.cc +++ b/lily/rest-collision.cc @@ -3,238 +3,260 @@ source file of the GNU LilyPond music typesetter - (c) 1997--2000 Han-Wen Nienhuys + (c) 1997--2005 Han-Wen Nienhuys */ +#include "rest-collision.hh" + #include // ceil. -#include "debug.hh" -#include "rest-collision.hh" +#include "warn.hh" #include "note-column.hh" #include "stem.hh" #include "rhythmic-head.hh" -#include "paper-def.hh" +#include "output-def.hh" #include "rest.hh" #include "group-interface.hh" #include "staff-symbol-referencer.hh" #include "duration.hh" +#include "directional-element-interface.hh" -MAKE_SCHEME_CALLBACK(Rest_collision,force_shift_callback,2); +MAKE_SCHEME_CALLBACK (Rest_collision, force_shift_callback, 2); SCM Rest_collision::force_shift_callback (SCM element_smob, SCM axis) { - Score_element *them = unsmob_element (element_smob); - Axis a = (Axis) gh_scm2int (axis); - assert (a == Y_AXIS); + Grob *them = unsmob_grob (element_smob); + (void) axis; + assert (scm_to_int (axis) == Y_AXIS); - Score_element * rc = unsmob_element (them->get_elt_property ("rest-collision")); - - if (rc) + if (Note_column::has_rests (them)) { - /* - Done: destruct pointers, so we do the shift only once. - */ - SCM elts = rc->get_elt_property ("elements"); - rc->set_elt_property ("elements", SCM_EOL); + Grob *rc = unsmob_grob (them->get_property ("rest-collision")); - do_shift (rc, elts); + if (rc && !to_boolean (rc->get_property ("positioning-done"))) + { + rc->set_property ("positioning-done", SCM_BOOL_T); + do_shift (rc); + } } - - return gh_double2scm (0.0); + return scm_make_real (0.0); } -void -Rest_collision::add_column (Score_element*me,Score_element *p) +MAKE_SCHEME_CALLBACK (Rest_collision, force_shift_callback_rest, 2); +SCM +Rest_collision::force_shift_callback_rest (SCM rest, SCM axis) { - me->add_dependency (p); - Pointer_group_interface gi (me); - gi.add_element (p); + Grob *rest_grob = unsmob_grob (rest); + assert ((Axis) scm_to_int (axis) == Y_AXIS); - p->add_offset_callback (Rest_collision_force_shift_callback_proc, Y_AXIS); - p->set_elt_property ("rest-collision", me->self_scm ()); + Grob *parent = rest_grob->get_parent (X_AXIS); + if (Note_column::has_interface (parent)) + return force_shift_callback (parent->self_scm (), axis); + else + return scm_make_real (0.0); } - -/* - Combination of dot-count and duration-log. - */ -static SCM -head_characteristic (Score_element * col) +void +Rest_collision::add_column (Grob *me, Grob *p) { - Score_element * s = unsmob_element (col->get_elt_property ("rest")); + me->add_dependency (p); + Pointer_group_interface::add_grob (me, ly_symbol2scm ("elements"), p); - if (!s) - return SCM_BOOL_F; - else - return gh_cons (s->get_elt_property ("duration-log"), - gh_int2scm (Rhythmic_head::dot_count (s))); + /* + only add callback for the rests, since we don't move anything + else. + + (not?) + */ + p->add_offset_callback (Rest_collision::force_shift_callback_proc, Y_AXIS); + p->set_property ("rest-collision", me->self_scm ()); + + Grob *rest = unsmob_grob (p->get_property ("rest")); + if (rest) + { + rest->add_offset_callback (Rest_collision::force_shift_callback_rest_proc, + Y_AXIS); + } } /* - TODO: fixme, fucks up if called twice on the same set of rests. - */ + TODO: look at horizontal-shift to determine ordering between rests + for more than two voices. +*/ SCM -Rest_collision::do_shift (Score_element *me, SCM elts) +Rest_collision::do_shift (Grob *me) { - /* - ugh. -> score elt type - */ - Link_array rests; - Link_array notes; + SCM elts = me->get_property ("elements"); + + Link_array rests; + Link_array notes; - for (SCM s = elts; gh_pair_p (s); s = gh_cdr (s)) + for (SCM s = elts; scm_is_pair (s); s = scm_cdr (s)) { - Score_element * e = unsmob_element (gh_car (s)); - if (e && unsmob_element (e->get_elt_property ("rest"))) - rests.push (e); + Grob *e = unsmob_grob (scm_car (s)); + if (unsmob_grob (e->get_property ("rest"))) + { + /* + Ignore rests under beam. + */ + Grob *st = unsmob_grob (e->get_property ("stem")); + if (st && unsmob_grob (st->get_property ("beam"))) + continue; + + rests.push (e); + } else notes.push (e); } - - /* - handle rest-rest and rest-note collisions - - [todo] - * decide not to print rest if too crowded? - - * ignore rests under beams. - */ + /* + handle rest-rest and rest-note collisions - // no rests to collide - if (!rests.size()) - return SCM_UNSPECIFIED; + [todo] + * decide not to print rest if too crowded? + */ - // no partners to collide with - if (rests.size() + notes.size () < 2) + /* + no partners to collide with + */ + if (rests.size () + notes.size () < 2) return SCM_UNSPECIFIED; - // meisjes met meisjes - if (!notes.size()) + Real staff_space = Staff_symbol_referencer::staff_space (me); + /* + only rests + */ + if (!notes.size ()) { - SCM characteristic = head_characteristic (rests[0]); - int i = 1; - for (; i < rests.size (); i++) + + /* + This is incomplete: in case of an uneven number of rests, the + center one should be centered on the staff. + */ + Drul_array > ordered_rests; + for (int i = 0; i < rests.size (); i++) { - if (!gh_equal_p (head_characteristic (rests[i]), characteristic)) - break; + Grob *r = Note_column::get_rest (rests[i]); + + Direction d = get_grob_direction (r); + if (d) + ordered_rests[d].push (rests[i]); + else + rests[d]->warning (_ ("can't resolve rest collission: rest direction not set")); } - /* - If all durations are the same, we'll check if there are more - rests than maximum-rest-count. - Otherwise (different durations), we'll try to display them all - (urg: all 3 of them, currently). - */ - int display_count; - SCM s = me->get_elt_property ("maximum-rest-count"); - if (i == rests.size () - && gh_number_p (s) && gh_scm2int (s) < rests.size ()) + Direction d = LEFT; + do { - display_count = gh_scm2int (s); - for (; i > display_count; i--) + ordered_rests[d].sort (Note_column::shift_compare); + } + while (flip (&d) != LEFT); + + do + { + if (ordered_rests[d].size () < 1) { - Score_element* r = unsmob_element (rests[i-1]->get_elt_property ("rest")); - if (r) - r->suicide (); - rests[i-1]->suicide (); + if (ordered_rests[-d].size () > 1) + ordered_rests[-d][0]->warning (_ ("too many colliding rests")); + + return SCM_UNSPECIFIED; } } - else - display_count = rests.size (); - - /* - Ugh. Should have minimum dist. + while (flip (&d) != LEFT); - Ugh. What do we do if we have three different rests? - - */ - int dy = display_count > 2 ? 6 : 4; // FIXME Should get dims from table. - if (display_count > 1) + Grob *common = common_refpoint_of_array (ordered_rests[DOWN], me, Y_AXIS); + common = common_refpoint_of_array (ordered_rests[UP], common, Y_AXIS); + + Real diff + = (ordered_rests[DOWN].top ()->extent (common, Y_AXIS)[UP] + - ordered_rests[UP].top ()->extent (common, Y_AXIS)[DOWN]) / staff_space; + + if (diff > 0) { - Direction d0 = Note_column::dir (rests[0]); - Direction d1 = Note_column::dir (rests[1]); + int amount_down = (int) ceil (diff / 2); + diff -= amount_down; + Note_column::translate_rests (ordered_rests[DOWN].top (), + -2 * amount_down); + if (diff > 0) + Note_column::translate_rests (ordered_rests[UP].top (), + 2 * int (ceil (diff))); + } - if (!d0 && !d1) + do + { + for (int i = ordered_rests[d].size () -1; i-- > 0;) { - d0= UP; - d1 = DOWN; + Real last_y = ordered_rests[d][i + 1]->extent (common, Y_AXIS)[d]; + Real y = ordered_rests[d][i]->extent (common, Y_AXIS)[-d]; + + Real diff = d * ((last_y - y) / staff_space); + if (diff > 0) + Note_column::translate_rests (ordered_rests[d][i], d * (int) ceil (diff) * 2); } - else if (!d0) - d0 = - d1; - else if (!d1) - d1 = -d0; - - Note_column::translate_rests (rests[0],d0 *dy); - Note_column::translate_rests (rests[1], d1 *dy); } + while (flip (&d) != LEFT); } - // meisjes met jongetjes - else + else { + /* + Rests and notes. + */ if (rests.size () > 1) { - warning (_("too many colliding rests")); + warning (_ ("too many colliding rests")); } - if (notes.size () > 1) - { - warning (_("too many notes for rest collision")); - } - Score_element * rcol = rests[0]; + Grob *rcol = 0; + Direction dir = CENTER; - // try to be opposite of noteheads. - Direction dir = - Note_column::dir (notes[0]); + for (int i = rests.size (); !rcol && i--;) + if (Note_column::dir (rests[i])) + { + dir = Note_column::dir (rests[i]); + rcol = rests[i]; + } - Interval restdim = Note_column::rest_dim (rcol); - if (restdim.empty_b ()) + if (!rcol) return SCM_UNSPECIFIED; - - // staff ref'd? - Real staff_space = me->paper_l()->get_var ("staffspace"); - - /* FIXME - staff_space = rcol->rests[0]->staff_space (); - */ - Real minimum_dist = gh_scm2double (me->get_elt_property ("minimum-distance")) * staff_space; - - /* - assumption: ref points are the same. - */ + + Grob *common = common_refpoint_of_array (notes, rcol, Y_AXIS); + + Interval restdim = rcol->extent (common, Y_AXIS); + if (restdim.is_empty ()) + return SCM_UNSPECIFIED; + + Real staff_space = Staff_symbol_referencer::staff_space (rcol); + Real minimum_dist = robust_scm2double (me->get_property ("minimum-distance"), 1.0) * staff_space; + Interval notedim; - for (int i = 0; i < notes.size(); i++) + for (int i = 0; i < notes.size (); i++) { - notedim.unite (notes[i]->extent (Y_AXIS)); + notedim.unite (notes[i]->extent (common, Y_AXIS)); } - Interval inter (notedim); - inter.intersect (restdim); - - Real dist = - minimum_dist + dir * (notedim[dir] - restdim[-dir]) >? 0; + Real dist + = minimum_dist + dir * max (notedim[dir] - restdim[-dir], 0.0); - - // FIXME - //int stafflines = 5; // rcol->rests[0]->line_count; int stafflines = Staff_symbol_referencer::line_count (me); - // hurg? - stafflines = stafflines != 0 ? stafflines : 5; - + if (!stafflines) + { + programming_error ("no staff line count"); + stafflines = 5; + } + // move discretely by half spaces. - int discrete_dist = int (ceil (dist / (0.5 *staff_space))); + int discrete_dist = int (ceil (dist / (0.5 * staff_space))); // move by whole spaces inside the staff. - if (discrete_dist < stafflines+1) - discrete_dist = int (ceil (discrete_dist / 2.0)* 2.0); - - Note_column::translate_rests (rcol,dir * discrete_dist); + if (discrete_dist < stafflines + 1) + discrete_dist = int (ceil (discrete_dist / 2.0) * 2.0); + + Note_column::translate_rests (rcol, dir * discrete_dist); } return SCM_UNSPECIFIED; } -void -Rest_collision::set_interface (Score_element*me) -{ - me->set_extent_callback (0, X_AXIS); - me->set_extent_callback (0, Y_AXIS); -} +ADD_INTERFACE (Rest_collision, "rest-collision-interface", + "Move around ordinary rests (not multi-measure-rests) to avoid " + "conflicts.", + "minimum-distance positioning-done elements");