X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Frest-collision.cc;h=8be91e3f231e435fc06105c12f7db5c5bb6e70dc;hb=4687d2d90133864e6dfb0518268d00096f1bc65b;hp=588df93abeb33fa99002fd442dcecc0f8716bf1c;hpb=711cf44d0ab28f3159230c84d63c0b19199408b0;p=lilypond.git diff --git a/lily/rest-collision.cc b/lily/rest-collision.cc index 588df93abe..8be91e3f23 100644 --- a/lily/rest-collision.cc +++ b/lily/rest-collision.cc @@ -1,9 +1,20 @@ /* - rest-collision.cc -- implement Rest_collision + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1997--2011 Han-Wen Nienhuys - (c) 1997--2006 Han-Wen Nienhuys + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . */ #include "rest-collision.hh" @@ -14,6 +25,7 @@ using namespace std; #include "directional-element-interface.hh" #include "duration.hh" #include "international.hh" +#include "item.hh" #include "note-column.hh" #include "output-def.hh" #include "pointer-group-interface.hh" @@ -24,24 +36,7 @@ using namespace std; #include "grob.hh" #include "warn.hh" -MAKE_SCHEME_CALLBACK (Rest_collision, force_shift_callback, 1); -SCM -Rest_collision::force_shift_callback (SCM smob) -{ - Grob *them = unsmob_grob (smob); - if (Note_column::has_rests (them)) - { - Grob *collision = unsmob_grob (them->get_object ("rest-collision")); - - if (collision) - { - (void) collision->get_property ("positioning-done"); - } - } - return scm_from_double (0.0); -} - -MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Rest_collision, force_shift_callback_rest, 2, 1); +MAKE_SCHEME_CALLBACK_WITH_OPTARGS (Rest_collision, force_shift_callback_rest, 2, 1, ""); SCM Rest_collision::force_shift_callback_rest (SCM rest, SCM offset) { @@ -55,8 +50,13 @@ Rest_collision::force_shift_callback_rest (SCM rest, SCM offset) if (scm_is_number (offset)) rest_grob->translate_axis (scm_to_double (offset), Y_AXIS); - if (Note_column::has_interface (parent)) - force_shift_callback (parent->self_scm ()); + if (Note_column::has_interface (parent) && Note_column::has_rests (parent)) + { + Grob *collision = unsmob_grob (parent->get_object ("rest-collision")); + + if (collision) + (void) collision->get_property ("positioning-done"); + } return scm_from_double (0.0); } @@ -66,13 +66,6 @@ Rest_collision::add_column (Grob *me, Grob *p) { Pointer_group_interface::add_grob (me, ly_symbol2scm ("elements"), p); - /* - only add callback for the rests, since we don't move anything - else. - - (not?) - */ - add_offset_callback (p, Rest_collision::force_shift_callback_proc, Y_AXIS); p->set_object ("rest-collision", me->self_scm ()); Grob *rest = unsmob_grob (p->get_object ("rest")); @@ -83,15 +76,26 @@ Rest_collision::add_column (Grob *me, Grob *p) } } +static bool +rest_shift_less (Grob *const &r1, Grob *const &r2) +{ + Grob *col1 = r1->get_parent (X_AXIS); + Grob *col2 = r2->get_parent (X_AXIS); + return Note_column::shift_less (col1, col2); +} + /* TODO: look at horizontal-shift to determine ordering between rests for more than two voices. */ -MAKE_SCHEME_CALLBACK(Rest_collision, calc_positioning_done, 1); +MAKE_SCHEME_CALLBACK (Rest_collision, calc_positioning_done, 1); SCM Rest_collision::calc_positioning_done (SCM smob) { Grob *me = unsmob_grob (smob); + + me->set_property ("positioning-done", SCM_BOOL_T); + extract_grob_set (me, "elements", elts); vector rests; @@ -137,14 +141,14 @@ Rest_collision::calc_positioning_done (SCM smob) Direction d = get_grob_direction (r); if (d) - ordered_rests[d].push_back (rests[i]); + ordered_rests[d].push_back (r); else rests[d]->warning (_ ("cannot resolve rest collision: rest direction not set")); } Direction d = LEFT; do - vector_sort (ordered_rests[d], Note_column::shift_less); + vector_sort (ordered_rests[d], rest_shift_less); while (flip (&d) != LEFT) ; @@ -171,23 +175,23 @@ Rest_collision::calc_positioning_done (SCM smob) { int amount_down = (int) ceil (diff / 2); diff -= amount_down; - Note_column::translate_rests (ordered_rests[DOWN].back (), - -2 * amount_down); + Rest::translate (ordered_rests[DOWN].back (), + -2 * amount_down); if (diff > 0) - Note_column::translate_rests (ordered_rests[UP].back (), - 2 * int (ceil (diff))); + Rest::translate (ordered_rests[UP].back (), + 2 * int (ceil (diff))); } do { - for (vsize i = ordered_rests[d].size () -1; i-- > 0;) + for (vsize i = ordered_rests[d].size () - 1; i-- > 0;) { 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); + Rest::translate (ordered_rests[d][i], d * (int) ceil (diff) * 2); } } while (flip (&d) != LEFT); @@ -197,67 +201,90 @@ Rest_collision::calc_positioning_done (SCM smob) /* Rests and notes. */ - if (rests.size () > 1) - warning (_ ("too many colliding rests")); - Grob *rcol = 0; - Direction dir = CENTER; - - for (vsize i = rests.size (); !rcol && i--;) - if (Note_column::dir (rests[i])) - { - rcol = rests[i]; - dir = Note_column::dir (rcol); - } + // Count how many rests we move + Drul_array rcount (0, 0); - if (!rcol) - return SCM_BOOL_T; - - Grob *rest = Note_column::get_rest (rcol); - Grob *common = common_refpoint_of_array (notes, rcol, Y_AXIS); - - Interval restdim = rcol->extent (common, Y_AXIS); - if (restdim.is_empty ()) - return SCM_BOOL_T; - - Real staff_space = Staff_symbol_referencer::staff_space (rcol); - Real minimum_dist = robust_scm2double (me->get_property ("minimum-distance"), 1.0) * staff_space; + for (vsize i = 0; i < rests.size (); i++) + { + Grob *rcol = rests[i]; + Direction dir = Note_column::dir (rcol); + if (!dir) + continue; + + Grob *rest = Note_column::get_rest (rcol); + // Do not compute a translation for pre-positioned rests, + // nor count them for the "too many colliding rests" warning + if (scm_is_number (rest->get_property ("staff-position"))) + continue; + + Grob *common = common_refpoint_of_array (notes, rcol, Y_AXIS); + Interval restdim = rest->extent (common, Y_AXIS); + if (restdim.is_empty ()) + continue; + + 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 (vsize i = 0; i < notes.size (); i++) + { + if (Note_column::dir (notes[i]) == -dir + // If the note has already happened (but it has a long + // duration, so there is a collision), don't look at the stem. + // If we do, the rest gets shifted down a lot and it looks bad. + || dynamic_cast (notes[i])->get_column () != dynamic_cast (rest)->get_column ()) + { + /* try not to look at the stem, as looking at a beamed + note may trigger beam positioning prematurely. + + This happens with dotted rests, which need Y + positioning to compute X-positioning. + */ + Grob *head = Note_column::first_head (notes[i]); + if (head) + notedim.unite (head->extent (common, Y_AXIS)); + else + programming_error ("Note_column without first_head()"); + } + else + notedim.unite (notes[i]->extent (common, Y_AXIS)); + } - Interval notedim; - for (vsize i = 0; i < notes.size (); i++) - notedim.unite (notes[i]->extent (common, Y_AXIS)); + Real y = dir * max (0.0, + -dir * restdim[-dir] + dir * notedim[dir] + minimum_dist); + int stafflines = Staff_symbol_referencer::line_count (me); + if (!stafflines) + { + programming_error ("no staff line count"); + stafflines = 5; + } - Real y = dir * max (0.0, - -dir * restdim[-dir] + dir * notedim[dir] + minimum_dist); - - int stafflines = Staff_symbol_referencer::line_count (me); - if (!stafflines) - { - programming_error ("no staff line count"); - stafflines = 5; - } + // move discretely by half spaces. + int discrete_y = dir * int (ceil (y / (0.5 * dir * staff_space))); - // move discretely by half spaces. - int discrete_y = dir * int (ceil (y / (0.5 * dir * staff_space))); + // move by whole spaces inside the staff. + if (fabs (Staff_symbol_referencer::get_position (rest) + + discrete_y) < stafflines + 1) + { + discrete_y = dir * int (ceil (dir * discrete_y / 2.0) * 2.0); + } - // move by whole spaces inside the staff. - if (fabs (Staff_symbol_referencer::get_position (rest) - + discrete_y) < stafflines + 1) - { - discrete_y = dir * int (ceil (dir * discrete_y / 2.0) * 2.0); + Rest::translate (rest, discrete_y); + if (rcount[dir]++) + rest->warning (_ ("too many colliding rests")); } - - Note_column::translate_rests (rcol, discrete_y); } return SCM_BOOL_T; } ADD_INTERFACE (Rest_collision, - "Move around ordinary rests (not multi-measure-rests) to avoid " - "conflicts.", + "Move ordinary rests (not multi-measure nor pitched rests)" + " to avoid conflicts.", /* properties */ "minimum-distance " "positioning-done " - "elements"); + "elements " + );