2 paper-def.cc -- implement Paper_def
4 source file of the GNU LilyPond music typesetter
6 (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
13 #include "paper-def.hh"
17 #include "input-translator.hh"
18 #include "assoc-iter.hh"
19 #include "score-grav.hh"
24 Paper_def::set_var (String s, Real r)
26 real_vars_p_->elem (s) = r;
30 Paper_def::get_var (String s) const
32 if (! real_vars_p_->elt_b (s))
33 error ("unknown paper variable `" + s+"'");
34 return real_vars_p_->elem (s);
38 Paper_def::linewidth_f() const
40 return get_var ("linewidth");
44 Paper_def::duration_to_dist (Moment d,Real k) const
46 if (get_var("geometric"))
47 return geometric_spacing(d);
48 return arithmetic_spacing(d,k);
53 Get the measure wide constant for arithmetic.
56 John S. Gourlay. ``Spacing a Line of Music,'' Technical Report
57 OSU-CISRC-10/87-TR35, Department of Computer and Information Science,
58 The Ohio State University, 1987.
62 Paper_def::arithmetic_constant(Moment d) const
64 return get_var("arithmetic_basicspace") - log_2(Moment(1,8) <? d);
68 Paper_def::arithmetic_spacing(Moment d ,Real k) const
70 return (log_2(d) + k)* get_var("arithmetic_multiplier");
74 Paper_def::geometric_spacing(Moment d) const
76 Real dur_f = (d) ?pow (get_var ("geometric"), log_2(d)) : 0;
77 return get_var ("basicspace") + get_var ("unitspace") * dur_f;
80 Paper_def::Paper_def()
84 real_vars_p_ = new Assoc<String,Real>;
87 Paper_def::~Paper_def()
94 Paper_def::Paper_def (Paper_def const&s)
96 itrans_p_ = s.itrans_p_ ? new Input_translator (*s.itrans_p_):0;
97 lookup_p_ = s.lookup_p_? new Lookup (*s.lookup_p_) : 0;
98 lookup_p_->paper_l_ = this;
99 real_vars_p_ = new Assoc<String,Real> (*s.real_vars_p_);
100 outfile_str_ = s.outfile_str_;
104 Paper_def::set (Input_translator * itrans_p)
107 itrans_p_ = itrans_p;
111 Paper_def::set (Lookup*l)
113 assert (l != lookup_p_);
116 lookup_p_->paper_l_ = this;
120 Paper_def::interline_f() const
122 return get_var ("interline");
127 Paper_def::rule_thickness() const
129 return get_var ("rule_thickness");
133 Paper_def::interbeam_f() const
135 return get_var ("interbeam");
138 Paper_def::internote_f() const
140 return interline_f() / 2;
144 Paper_def::note_width() const
146 return get_var ("notewidth");
150 Paper_def::print() const
154 DOUT << "out: " <<outfile_str_;
157 for (Assoc_iter<String,Real> i (*real_vars_p_); i.ok(); i++)
159 DOUT << i.key() << "= " << i.val () << "\n";
166 Paper_def::lookup_l()
173 Paper_def::get_global_translator_p()
180 Global_translator* g = itrans_p_->get_group_engraver_p()->global_l ();
181 assert (g->is_type_b (Score_engraver::static_name()));
182 Score_engraver*grav = (Score_engraver*) g;
183 grav->pscore_p_ = new Paper_score;
184 grav->pscore_p_->paper_l_ = this;
188 IMPLEMENT_IS_TYPE_B1(Paper_def, Music_output_def);