X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fspacing-spanner.cc;h=b1a4a1867e8f2cb0a5875dcf5703d0b19d772c8e;hb=da18ce55e6c6755ba018ec35a8ce8d59c9dde1e0;hp=389593ff93166d2d8e46271ccd6b42316c7a64dd;hpb=c1dcc83ffe9c356e9ab3df20c4fde22f9c1aab8d;p=lilypond.git diff --git a/lily/spacing-spanner.cc b/lily/spacing-spanner.cc index 389593ff93..b1a4a1867e 100644 --- a/lily/spacing-spanner.cc +++ b/lily/spacing-spanner.cc @@ -1,11 +1,10 @@ -/* +/* spacing-spanner.cc -- implement Spacing_spanner - + source file of the GNU LilyPond music typesetter - + (c) 1999--2005 Han-Wen Nienhuys - - */ +*/ #include #include @@ -30,81 +29,78 @@ /* TODO: this file/class is too complex. Should figure out how to chop this up even more. - - */ +*/ class Spacing_spanner { public: - static void standard_breakable_column_spacing (Grob * me, Item*l, Item*r, - Real * fixed, Real * space, Moment); - - - static Real default_bar_spacing (Grob*, Grob*, Grob*, Moment); - static Real note_spacing (Grob*, Grob*, Grob*, Moment, bool*); - static Real get_duration_space (Grob*, Moment dur, Rational shortest, bool*); - static Rational find_shortest (Grob *, Link_array const &); - static void breakable_column_spacing (Grob*, Item* l, Item *r, Moment); + static void standard_breakable_column_spacing (Grob *me, Item *l, Item *r, + Real *fixed, Real *space, Moment); + + static Real default_bar_spacing (Grob *, Grob *, Grob *, Moment); + static Real note_spacing (Grob *, Grob *, Grob *, Moment, bool *); + static Real get_duration_space (Grob *, Moment dur, Rational shortest, bool *); + static Rational find_shortest (Grob *, Link_array const &); + static void breakable_column_spacing (Grob *, Item *l, Item *r, Moment); static void find_loose_columns () {} - static void prune_loose_columns (Grob*, Link_array *cols, Rational); + static void prune_loose_columns (Grob *, Link_array *cols, Rational); static void find_loose_columns (Link_array cols); static void set_explicit_neighbor_columns (Link_array cols); static void set_implicit_neighbor_columns (Link_array cols); - static void do_measure (Rational, Grob*me, Link_array *cols); - static void musical_column_spacing (Grob*, Item*, Item*, Real, Rational); - DECLARE_SCHEME_CALLBACK (set_springs, (SCM )); - static bool has_interface (Grob*); + static void do_measure (Rational, Grob *me, Link_array *cols); + static void musical_column_spacing (Grob *, Item *, Item *, Real, Rational); + DECLARE_SCHEME_CALLBACK (set_springs, (SCM)); + static bool has_interface (Grob *); }; /* Return whether COL is fixed to its neighbors by some kind of spacing constraint. - + If in doubt, then we're not loose; the spacing engine should space for it, risking suboptimal spacing. - - (Otherwise, we might risk core dumps, and other weird stuff.) + (Otherwise, we might risk core dumps, and other weird stuff.) */ static bool -loose_column (Grob *l, Grob *c, Grob *r) +loose_column (Grob *l, Grob *c, Grob *r) { SCM rns = c->get_property ("right-neighbors"); SCM lns = c->get_property ("left-neighbors"); - /* + /* If this column doesn't have a proper neighbor, we should really make it loose, but spacing it correctly is more than we can currently can handle. (this happens in the following situation: - | - | clef G - * + | + | clef G + * - | | || - | | || - O O || + | | || + | | || + O O || the column containing the clef is really loose, and should be attached right to the first column, but that is a lot of work for such a borderline case.) - - */ + + */ if (!scm_is_pair (lns) || !scm_is_pair (rns)) return false; - Item * l_neighbor = dynamic_cast (unsmob_grob (scm_car (lns))); - Item * r_neighbor = dynamic_cast (unsmob_grob (scm_car (rns))); + Item *l_neighbor = dynamic_cast (unsmob_grob (scm_car (lns))); + Item *r_neighbor = dynamic_cast (unsmob_grob (scm_car (rns))); if (!l_neighbor || !r_neighbor) return false; l_neighbor = l_neighbor->get_column (); - r_neighbor = dynamic_cast (Note_spacing::right_column (r_neighbor)); + r_neighbor = dynamic_cast (Note_spacing::right_column (r_neighbor)); if (l == l_neighbor && r == r_neighbor) return false; @@ -112,28 +108,25 @@ loose_column (Grob *l, Grob *c, Grob *r) if (!l_neighbor || !r_neighbor) return false; - - /* Only declare loose if the bounds make a little sense. This means some cases (two isolated, consecutive clef changes) won't be nicely folded, but hey, then don't do that. */ - if (! ((Paper_column::is_musical (l_neighbor) || Item::is_breakable (l_neighbor)) - && (Paper_column::is_musical (r_neighbor) || Item::is_breakable (r_neighbor))) ) + if (! ((Paper_column::is_musical (l_neighbor) || Item::is_breakable (l_neighbor)) + && (Paper_column::is_musical (r_neighbor) || Item::is_breakable (r_neighbor)))) { return false; } - /* A rather hairy check, but we really only want to move around clefs. (anything else?) in any case, we don't want to move bar lines. - */ + */ for (SCM e = c->get_property ("elements"); scm_is_pair (e); e = scm_cdr (e)) { - Grob * g = unsmob_grob (scm_car (e)); + Grob *g = unsmob_grob (scm_car (e)); if (g && Break_align_interface::has_interface (g)) { for (SCM s = g->get_property ("elements"); scm_is_pair (s); @@ -142,14 +135,14 @@ loose_column (Grob *l, Grob *c, Grob *r) Grob *h = unsmob_grob (scm_car (s)); /* - ugh. -- fix staff-bar name? + ugh. -- fix staff-bar name? */ - if (h && h->get_property ("break-align-symbol") == ly_symbol2scm ("staff-bar")) + if (h && h->get_property ("break-align-symbol") == ly_symbol2scm ("staff-bar")) return false; } } } - + return true; } @@ -159,11 +152,11 @@ loose_column (Grob *l, Grob *c, Grob *r) between. */ void -Spacing_spanner::prune_loose_columns (Grob*me, Link_array *cols, Rational shortest) +Spacing_spanner::prune_loose_columns (Grob *me, Link_array *cols, Rational shortest) { Link_array newcols; Real increment = robust_scm2double (me->get_property ("spacing-increment"), 1.2); - for (int i = 0; i < cols->size (); i++) + for (int i = 0; i < cols->size (); i++) { if (Item::is_breakable (cols->elem (i)) || Paper_column::is_musical (cols->elem (i))) { @@ -172,7 +165,7 @@ Spacing_spanner::prune_loose_columns (Grob*me, Link_array *cols, Rational } Grob *c = cols->elem (i); - if (loose_column (cols->elem (i-1), c, cols->elem (i+1))) + if (loose_column (cols->elem (i - 1), c, cols->elem (i + 1))) { SCM lns = c->get_property ("left-neighbors"); lns = scm_is_pair (lns) ? scm_car (lns) : SCM_BOOL_F; @@ -191,17 +184,17 @@ Spacing_spanner::prune_loose_columns (Grob*me, Link_array *cols, Rational /* Set distance constraints for loose columns */ - Drul_array next_door; + Drul_array next_door; next_door[LEFT] = cols->elem (i - 1); - next_door[RIGHT] = cols->elem (i + 1); + next_door[RIGHT] = cols->elem (i + 1); Direction d = LEFT; Drul_array dists (0, 0); do { dists[d] = 0.0; - Item *lc = dynamic_cast ((d == LEFT) ? next_door[LEFT] : c); - Item *rc = dynamic_cast (d == LEFT ? c : next_door[RIGHT]); + Item *lc = dynamic_cast ((d == LEFT) ? next_door[LEFT] : c); + Item *rc = dynamic_cast (d == LEFT ? c : next_door[RIGHT]); for (SCM s = lc->get_property ("spacing-wishes"); scm_is_pair (s); s = scm_cdr (s)) @@ -220,14 +213,14 @@ Spacing_spanner::prune_loose_columns (Grob*me, Link_array *cols, Rational /* The note spacing should be taken from the musical columns. - + */ Real base = note_spacing (me, lc, rc, shortest, &dummy); Note_spacing::get_spacing (sp, rc, base, increment, &space, &fixed); - space -= increment; - - dists[d] = dists[d] >? space; + space -= increment; + + dists[d] = max (dists[d], space); } else { @@ -235,17 +228,16 @@ Spacing_spanner::prune_loose_columns (Grob*me, Link_array *cols, Rational Staff_spacing::get_spacing_params (sp, &space, &fixed_space); - dists[d] = dists[d] >? fixed_space; + dists[d] = max (dists[d], fixed_space); } - } } while (flip (&d) != LEFT); Rod r; r.distance_ = dists[LEFT] + dists[RIGHT]; - r.item_drul_[LEFT] = dynamic_cast (cols->elem (i-1)); - r.item_drul_[RIGHT] = dynamic_cast (cols->elem (i+1)); + r.item_drul_[LEFT] = dynamic_cast (cols->elem (i - 1)); + r.item_drul_[RIGHT] = dynamic_cast (cols->elem (i + 1)); r.add_to_cols (); } @@ -259,7 +251,7 @@ Spacing_spanner::prune_loose_columns (Grob*me, Link_array *cols, Rational } /* - Set neighboring columns determined by the spacing-wishes grob property. + Set neighboring columns determined by the spacing-wishes grob property. */ void Spacing_spanner::set_explicit_neighbor_columns (Link_array cols) @@ -270,21 +262,21 @@ Spacing_spanner::set_explicit_neighbor_columns (Link_array cols) int min_rank = 100000; // inf. - SCM wishes = cols[i]->get_property ("spacing-wishes"); + SCM wishes = cols[i]->get_property ("spacing-wishes"); for (SCM s = wishes; scm_is_pair (s); s = scm_cdr (s)) { - Item * wish = dynamic_cast (unsmob_grob (scm_car (s))); + Item *wish = dynamic_cast (unsmob_grob (scm_car (s))); - Item * lc = wish->get_column (); - Grob * right = Note_spacing::right_column (wish); + Item *lc = wish->get_column (); + Grob *right = Note_spacing::right_column (wish); if (!right) continue; - Item * rc = dynamic_cast (right); + Item *rc = dynamic_cast (right); int right_rank = Paper_column::get_rank (rc); - int left_rank = Paper_column::get_rank (lc); + int left_rank = Paper_column::get_rank (lc); /* update the left column. @@ -292,8 +284,8 @@ Spacing_spanner::set_explicit_neighbor_columns (Link_array cols) if (right_rank <= min_rank) { if (right_rank < min_rank) - right_neighbors = SCM_EOL; - + right_neighbors = SCM_EOL; + min_rank = right_rank; right_neighbors = scm_cons (wish->self_scm (), right_neighbors); } @@ -306,7 +298,7 @@ Spacing_spanner::set_explicit_neighbor_columns (Link_array cols) if (scm_is_pair (left_neighs) && unsmob_grob (scm_car (left_neighs))) { - Item * it = dynamic_cast (unsmob_grob (scm_car (left_neighs))); + Item *it = dynamic_cast (unsmob_grob (scm_car (left_neighs))); maxrank = Paper_column::get_rank (it->get_column ()); } @@ -329,14 +321,14 @@ Spacing_spanner::set_explicit_neighbor_columns (Link_array cols) /* Set neighboring columns that have no left/right-neighbor set - yet. Only do breakable non-musical columns, and musical columns. + yet. Only do breakable non-musical columns, and musical columns. */ void Spacing_spanner::set_implicit_neighbor_columns (Link_array cols) { for (int i = 0; i < cols.size (); i++) { - Item * it = dynamic_cast(cols[i]); + Item *it = dynamic_cast (cols[i]); if (!Item::is_breakable (it) && !Paper_column::is_musical (it)) continue; @@ -345,21 +337,20 @@ Spacing_spanner::set_implicit_neighbor_columns (Link_array cols) /* sloppy with typnig left/right-neighbors should take list, but paper-column found instead. */ - SCM ln = cols[i] ->get_property ("left-neighbors"); - if (!scm_is_pair (ln) && i ) + SCM ln = cols[i]->get_property ("left-neighbors"); + if (!scm_is_pair (ln) && i) { - cols[i]->set_property ("left-neighbors", scm_cons (cols[i-1]->self_scm (), SCM_EOL)); + cols[i]->set_property ("left-neighbors", scm_cons (cols[i - 1]->self_scm (), SCM_EOL)); } - SCM rn = cols[i] ->get_property ("right-neighbors"); - if (!scm_is_pair (rn) && i < cols.size () - 1) + SCM rn = cols[i]->get_property ("right-neighbors"); + if (!scm_is_pair (rn) && i < cols.size () - 1) { cols[i]->set_property ("right-neighbors", scm_cons (cols[i + 1]->self_scm (), SCM_EOL)); } } } - MAKE_SCHEME_CALLBACK (Spacing_spanner, set_springs, 1); SCM Spacing_spanner::set_springs (SCM smob) @@ -369,7 +360,7 @@ Spacing_spanner::set_springs (SCM smob) /* can't use get_system() ? --hwn. */ - Link_array all (me->pscore_->system_->columns ()); + Link_array all (me->pscore_->root_system ()->columns ()); set_explicit_neighbor_columns (all); @@ -383,28 +374,26 @@ Spacing_spanner::set_springs (SCM smob) { global_shortest = find_shortest (me, all); if (be_verbose_global) - progress_indication (_f ("Global shortest duration is %s", global_shortest.to_string ()) + "\n"); + message (_f ("Global shortest duration is %s", global_shortest.to_string ()) + "\n"); } prune_loose_columns (me, &all, global_shortest); set_implicit_neighbor_columns (all); - int j = 0; for (int i = 1; i < all.size (); i++) { Grob *sc = all[i]; if (Item::is_breakable (sc)) - { - Link_array measure (all.slice (j, i+1)); - do_measure (global_shortest, me, &measure); + { + Link_array measure (all.slice (j, i + 1)); + do_measure (global_shortest, me, &measure); j = i; - } + } } return SCM_UNSPECIFIED; } - /* We want the shortest note that is also "common" in the piece, so we find the shortest in each measure, and take the most frequently @@ -413,7 +402,6 @@ Spacing_spanner::set_springs (SCM smob) This probably gives weird effects with modern music, where every note has a different duration, but hey, don't write that kind of stuff, then. - */ Rational Spacing_spanner::find_shortest (Grob *me, Link_array const &cols) @@ -421,28 +409,28 @@ Spacing_spanner::find_shortest (Grob *me, Link_array const &cols) /* ascending in duration */ - Array durations; + Array durations; Array counts; - + Rational shortest_in_measure; shortest_in_measure.set_infinite (1); - - for (int i = 0 ; i < cols.size (); i++) + + for (int i = 0; i < cols.size (); i++) { if (Paper_column::is_musical (cols[i])) { - Moment *when = unsmob_moment (cols[i]->get_property ("when")); + Moment *when = unsmob_moment (cols[i]->get_property ("when")); /* ignore grace notes for shortest notes. */ if (when && when->grace_part_) continue; - - SCM st = cols[i]->get_property ("shortest-starter-duration"); + + SCM st = cols[i]->get_property ("shortest-starter-duration"); Moment this_shortest = *unsmob_moment (st); assert (this_shortest.to_bool ()); - shortest_in_measure = shortest_in_measure const &cols) counts.push (1); } - shortest_in_measure.set_infinite (1); + shortest_in_measure.set_infinite (1); } } @@ -486,13 +474,13 @@ Spacing_spanner::find_shortest (Grob *me, Link_array const &cols) // printf ("duration %d/%d, count %d\n", durations[i].num (), durations[i].den (), counts[i]); } - SCM bsd = me->get_property ("base-shortest-duration"); + SCM bsd = me->get_property ("base-shortest-duration"); Rational d = Rational (1, 8); if (Moment *m = unsmob_moment (bsd)) d = m->main_part_; - + if (max_idx >= 0) - d = d const &cols) per-measure spacing. Now we have piecewise spacing. We should fix this to support "spacing-regions": some regions have different notes (different time sigs) than others, and should be spaced differently. - */ +*/ void -Spacing_spanner::do_measure (Rational global_shortest, Grob*me, - Link_array *cols) +Spacing_spanner::do_measure (Rational global_shortest, Grob *me, + Link_array *cols) { Real headwid = robust_scm2double (me->get_property ("spacing-increment"), 1); for (int i = 0; i < cols->size () - 1; i++) { - Item * l = dynamic_cast (cols->elem (i)); - Item * r = dynamic_cast (cols->elem (i+1)); + Item *l = dynamic_cast (cols->elem (i)); + Item *r = dynamic_cast (cols->elem (i + 1)); - Paper_column * lc = dynamic_cast (l); - Paper_column * rc = dynamic_cast (r); + Paper_column *lc = dynamic_cast (l); + Paper_column *rc = dynamic_cast (r); if (!Paper_column::is_musical (l)) { breakable_column_spacing (me, l, r, global_shortest); /* - The case that the right part is broken as well is rather rare, but it is possible, eg. with a single empty measure, or if one staff finishes a tad earlier than the rest. - - */ + + */ Item *lb = l->find_prebroken_piece (RIGHT); Item *rb = r->find_prebroken_piece (LEFT); - + if (lb) breakable_column_spacing (me, lb, r, global_shortest); @@ -544,16 +531,16 @@ Spacing_spanner::do_measure (Rational global_shortest, Grob*me, musical_column_spacing (me, lc, rc, headwid, global_shortest); if (Item *rb = r->find_prebroken_piece (LEFT)) musical_column_spacing (me, lc, rb, headwid, global_shortest); - } + } } } /* Generate the space between two musical columns LC and RC, given spacing parameters INCR and SHORTEST. - */ +*/ void -Spacing_spanner::musical_column_spacing (Grob *me, Item * lc, Item *rc, Real increment, Rational global_shortest) +Spacing_spanner::musical_column_spacing (Grob *me, Item *lc, Item *rc, Real increment, Rational global_shortest) { bool expand_only = false; Real base_note_space = note_spacing (me, lc, rc, global_shortest, &expand_only); @@ -561,8 +548,8 @@ Spacing_spanner::musical_column_spacing (Grob *me, Item * lc, Item *rc, Real inc Real compound_note_space = 0.0; Real compound_fixed_note_space = 0.0; int wish_count = 0; - - SCM seq = lc->get_property ("right-neighbors"); + + SCM seq = lc->get_property ("right-neighbors"); /* We adjust the space following a note only if the next note @@ -571,7 +558,7 @@ Spacing_spanner::musical_column_spacing (Grob *me, Item * lc, Item *rc, Real inc */ for (SCM s = seq; scm_is_pair (s); s = scm_cdr (s)) { - Grob * wish = unsmob_grob (scm_car (s)); + Grob *wish = unsmob_grob (scm_car (s)); Item *wish_rcol = Note_spacing::right_column (wish); if (Note_spacing::left_column (wish) != lc @@ -585,30 +572,28 @@ Spacing_spanner::musical_column_spacing (Grob *me, Item * lc, Item *rc, Real inc { Real space = 0.0; Real fixed = 0.0; - + Note_spacing::get_spacing (wish, rc, base_note_space, increment, &space, &fixed); - compound_note_space = compound_note_space + space; compound_fixed_note_space = compound_fixed_note_space + fixed; - wish_count ++; - + wish_count++; } } - if (Paper_column::when_mom (rc).grace_part_ && - !Paper_column::when_mom (lc).grace_part_) + if (Paper_column::when_mom (rc).grace_part_ + && !Paper_column::when_mom (lc).grace_part_) { /* Ugh. 0.8 is arbitrary. - */ - compound_note_space *= 0.8; + */ + compound_note_space *= 0.8; } - + if (compound_note_space < 0 || wish_count == 0) { compound_note_space = base_note_space; - compound_fixed_note_space = increment; + compound_fixed_note_space = increment; } else { @@ -623,14 +608,14 @@ Spacing_spanner::musical_column_spacing (Grob *me, Item * lc, Item *rc, Real inc TODO: this criterion is discontinuous in the derivative. Maybe it should be continuous? */ - compound_fixed_note_space = compound_fixed_note_space get_layout ()->c_variable ("packed")); Real strength, distance; /* TODO: make sure that the space doesn't exceed the right margin. - */ + */ if (packed) { /* @@ -651,23 +636,22 @@ Spacing_spanner::musical_column_spacing (Grob *me, Item * lc, Item *rc, Real inc distance = compound_note_space; } - Spaceable_grob::add_spring (lc, rc, distance, strength); + Spaceable_grob::add_spring (lc, rc, distance, strength); } - /* The one-size-fits all spacing. It doesn't take into account different spacing wishes from one to the next column. - */ +*/ void -Spacing_spanner::standard_breakable_column_spacing (Grob * me, Item*l, Item*r, - Real * fixed, Real * space, - Moment shortest) +Spacing_spanner::standard_breakable_column_spacing (Grob *me, Item *l, Item *r, + Real *fixed, Real *space, + Moment shortest) { *fixed = 0.0; Direction d = LEFT; - Drul_array cols (l, r); - + Drul_array cols (l, r); + do { if (!Paper_column::is_musical (cols[d])) @@ -675,14 +659,13 @@ Spacing_spanner::standard_breakable_column_spacing (Grob * me, Item*l, Item*r, /* Tied accidentals over barlines cause problems, so lets see what happens if we do this for non musical columns only. - */ + */ Interval lext = cols[d]->extent (cols [d], X_AXIS); if (!lext.is_empty ()) *fixed += -d * lext[-d]; } } while (flip (&d) != LEFT); - if (l->is_breakable (l) && r->is_breakable (r)) { @@ -690,10 +673,10 @@ Spacing_spanner::standard_breakable_column_spacing (Grob * me, Item*l, Item*r, Moment mlen (1); if (dt) mlen = *dt; - + Real incr = robust_scm2double (me->get_property ("spacing-increment"), 1); - *space = *fixed + incr * double (mlen.main_part_ / shortest.main_part_) * 0.8; + *space = *fixed + incr * double (mlen.main_part_ / shortest.main_part_) * 0.8; } else { @@ -704,8 +687,8 @@ Spacing_spanner::standard_breakable_column_spacing (Grob * me, Item*l, Item*r, /* In this case, Staff_spacing should handle the job, using dt when it is 0 is silly. - */ - *space = *fixed + 0.5; + */ + *space = *fixed + 0.5; } else { @@ -715,12 +698,11 @@ Spacing_spanner::standard_breakable_column_spacing (Grob * me, Item*l, Item*r, } } - /* Read hints from L and generate springs. */ void -Spacing_spanner::breakable_column_spacing (Grob*me, Item* l, Item *r, Moment shortest) +Spacing_spanner::breakable_column_spacing (Grob *me, Item *l, Item *r, Moment shortest) { Real compound_fixed = 0.0; Real compound_space = 0.0; @@ -733,7 +715,7 @@ Spacing_spanner::breakable_column_spacing (Grob*me, Item* l, Item *r, Moment sho for (SCM s = l->get_property ("spacing-wishes"); scm_is_pair (s); s = scm_cdr (s)) { - Item * spacing_grob = dynamic_cast (unsmob_grob (scm_car (s))); + Item *spacing_grob = dynamic_cast (unsmob_grob (scm_car (s))); if (!spacing_grob || !Staff_spacing::has_interface (spacing_grob)) continue; @@ -746,7 +728,7 @@ Spacing_spanner::breakable_column_spacing (Grob*me, Item* l, Item *r, Moment sho pointer munging. */ - assert (spacing_grob-> get_column () == l); + assert (spacing_grob->get_column () == l); Staff_spacing::get_spacing_params (spacing_grob, &space, &fixed_space); @@ -763,13 +745,13 @@ Spacing_spanner::breakable_column_spacing (Grob*me, Item* l, Item *r, Moment sho compound_space += space; compound_fixed += fixed_space; - wish_count ++ ; + wish_count++; } } if (compound_space <= 0.0 || !wish_count) { - standard_breakable_column_spacing (me, l, r, &compound_fixed, &compound_space , + standard_breakable_column_spacing (me, l, r, &compound_fixed, &compound_space, shortest); wish_count = 1; } @@ -780,36 +762,34 @@ Spacing_spanner::breakable_column_spacing (Grob*me, Item* l, Item *r, Moment sho } assert (!isinf (compound_space)); - compound_space = compound_space >? compound_fixed; + compound_space = max (compound_space, compound_fixed); - /* Hmm. we do 1/0 in the next thing. Perhaps we should check if this works on all architectures. - */ + */ /* There used to be code that changed spacing depending on raggedright setting. Ugh. - Do it more cleanly, or rename the property. - - */ + Do it more cleanly, or rename the property. + + */ Real strength = 1 / (compound_space - compound_fixed); Real distance = compound_space; Spaceable_grob::add_spring (l, r, distance, strength); } - /** - Get the measure wide ant for arithmetic spacing. - */ + Get the measure wide ant for arithmetic spacing. +*/ Real -Spacing_spanner::get_duration_space (Grob*me, Moment d, Rational shortest, bool * expand_only) +Spacing_spanner::get_duration_space (Grob *me, Moment d, Rational shortest, bool *expand_only) { Real k = robust_scm2double (me->get_property ("shortest-duration-space"), 1); Real incr = robust_scm2double (me->get_property ("spacing-increment"), 1); - + if (d < shortest) { /* @@ -825,39 +805,39 @@ Spacing_spanner::get_duration_space (Grob*me, Moment d, Rational shortest, bool mm for 8th. (white space), suggesting that we use (1.2 / 1.5)^{-log2(duration ratio)} - - */ + + */ Rational ratio = d.main_part_ / shortest; - return ((k-1) + double (ratio)) * incr; + return ((k - 1) + double (ratio)) * incr; } else { /* - John S. Gourlay. ``Spacing a Line of Music, '' Technical - Report OSU-CISRC-10/87-TR35, Department of Computer and - Information Science, The Ohio State University, 1987. - */ - Real log = log_2 (shortest); + John S. Gourlay. ``Spacing a Line of Music, '' Technical + Report OSU-CISRC-10/87-TR35, Department of Computer and + Information Science, The Ohio State University, 1987. + */ + Real log = log_2 (shortest); k -= log; - Rational compdur = d.main_part_ + d.grace_part_ /Rational (3); - *expand_only = false; - + Rational compdur = d.main_part_ + d.grace_part_ / Rational (3); + *expand_only = false; + return (log_2 (compdur) + k) * incr; } } Real -Spacing_spanner::note_spacing (Grob*me, Grob *lc, Grob *rc, - Moment shortest, bool * expand_only) +Spacing_spanner::note_spacing (Grob *me, Grob *lc, Grob *rc, + Moment shortest, bool *expand_only) { Moment shortest_playing_len = 0; SCM s = lc->get_property ("shortest-playing-duration"); if (unsmob_moment (s)) shortest_playing_len = *unsmob_moment (s); - + if (! shortest_playing_len.to_bool ()) { programming_error ("can't find a ruling note at " + Paper_column::when_mom (lc).to_string ()); @@ -865,7 +845,7 @@ Spacing_spanner::note_spacing (Grob*me, Grob *lc, Grob *rc, } Moment lwhen = Paper_column::when_mom (lc); - Moment rwhen = Paper_column::when_mom (rc); + Moment rwhen = Paper_column::when_mom (rc); Moment delta_t = rwhen - lwhen; if (!Paper_column::is_musical (rc)) @@ -874,18 +854,18 @@ Spacing_spanner::note_spacing (Grob*me, Grob *lc, Grob *rc, when toying with mmrests, it is possible to have musical column on the left and non-musical on the right, spanning several measures. - */ - + */ + Moment *dt = unsmob_moment (rc->get_property ("measure-length")); if (dt) { - delta_t = delta_t ? delta_t; + + */ + shortest_playing_len = max (shortest_playing_len, delta_t); if (delta_t.main_part_ && !lwhen.grace_part_) { dist = get_duration_space (me, shortest_playing_len, shortest.main_part_, expand_only); @@ -916,28 +896,23 @@ Spacing_spanner::note_spacing (Grob*me, Grob *lc, Grob *rc, dist *= grace_fact; } - return dist; } - - ADD_INTERFACE (Spacing_spanner, "spacing-spanner-interface", -"The space taken by a note is dependent on its duration. Doubling a\n" -"duration adds spacing-increment to the space. The most common shortest\n" -"note gets @code{shortest-duration-space}. Notes that are even shorter are\n" -"spaced proportonial to their duration.\n" -"\n" -"Typically, the increment is the width of a black note head. In a\n" -"piece with lots of 8th notes, and some 16th notes, the eighth note\n" -"gets 2 note heads width (i.e. the space following a note is 1 note\n" -"head width) A 16th note is followed by 0.5 note head width. The\n" -"quarter note is followed by 3 NHW, the half by 4 NHW, etc.\n", - "grace-space-factor spacing-increment base-shortest-duration shortest-duration-space common-shortest-duration"); - - + "The space taken by a note is dependent on its duration. Doubling a\n" + "duration adds spacing-increment to the space. The most common shortest\n" + "note gets @code{shortest-duration-space}. Notes that are even shorter are\n" + "spaced proportonial to their duration.\n" + "\n" + "Typically, the increment is the width of a black note head. In a\n" + "piece with lots of 8th notes, and some 16th notes, the eighth note\n" + "gets 2 note heads width (i.e. the space following a note is 1 note\n" + "head width) A 16th note is followed by 0.5 note head width. The\n" + "quarter note is followed by 3 NHW, the half by 4 NHW, etc.\n", + "grace-space-factor spacing-increment base-shortest-duration shortest-duration-space common-shortest-duration"); ADD_INTERFACE (Spacing_interface, "spacing-interface", - "Something to do with line breaking and spacing. Kill this one after determining line breaks.", - ""); + "Something to do with line breaking and spacing. Kill this one after determining line breaks.", + "");