-//
-// duration.cc -- implement Duration, Plet, Duration_convert, Duration_iterator
-//
-// copyright 1997 Jan Nieuwenhuizen <jan@digicash.com>
+/*
+ duration.cc -- implement Duration, Plet,
-// split into 4?
+ source file of the LilyPond music typesetter
+ (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
+ Han-Wen Nienhuys <hanwen@stack.nl>
+*/
+
+#include <assert.h>
#include "proto.hh"
#include "plist.hh"
#include "string.hh"
#include "source.hh"
#include "moment.hh"
#include "duration.hh"
-#include "debug.hh" //ugh
-
-Duration::Duration( int type_i, int dots_i = 0, Plet* plet_l )
-{
- type_i_ = type_i;
- dots_i_ = dots_i;
- plet_p_ = 0;
- set_plet( plet_l );
-}
-
-Duration::Duration( Duration const& dur_c_r )
-{
- type_i_ = 0;
- dots_i_ = 0;
- plet_p_ = 0;
- *this = dur_c_r;
-}
-
-Duration::~Duration()
-{
- delete plet_p_;
-}
-
-Duration const&
-Duration::operator =( Duration const& dur_c_r )
-{
- if ( &dur_c_r == this )
- return *this;
-
- type_i_ = dur_c_r.type_i_;
- dots_i_ = dur_c_r.dots_i_;
- set_plet( dur_c_r.plet_p_ );
-
- return *this;
-}
-
-void
-Duration::set_plet( Plet* plet_l )
-{
- delete plet_p_;
- plet_p_ = 0;
- if ( plet_l )
- plet_p_ = new Plet( *plet_l );
-}
-
-Plet::Plet( int iso_i, int type_i )
-{
- iso_i_ = iso_i;
- type_i_ = type_i;
-}
-
-Plet::Plet( Plet const& plet_c_r )
-{
- iso_i_ = plet_c_r.iso_i_;
- type_i_ = plet_c_r.type_i_;
-}
-
-String
-Duration_convert::dur2_str( Duration dur )
-{
- String str( dur.type_i_ );
- str += String( '.', dur.dots_i_ );
- if ( dur.plet_p_ )
- str += String( "*" ) + String( dur.plet_p_->iso_i_ )
- + String( "/" ) + String( dur.plet_p_->type_i_ );
- return str;
-}
-
-int
-Duration_convert::dur2_i( Duration dur, int division_1_i )
-{
- return dur2_mom( dur ) * Moment( division_1_i );
-}
-
-Moment
-Duration_convert::dur2_mom( Duration dur )
-{
- if ( !dur.type_i_ )
- return 0;
+#include "duration-convert.hh"
- Moment mom = Moment( 1 , dur.type_i_ );
+// statics Duration
+int Duration::division_1_i_s = 384 * 4;
- Moment delta = mom;
- while ( dur.dots_i_-- ) {
- delta /= 2.0;
- mom += delta;
- }
- return mom * plet_factor_mom( dur );
-}
-
-Duration
-Duration_convert::mom2_dur( Moment mom )
+Duration::Duration()
{
- /* this is cute,
- but filling an array using Duration_iterator
- might speed things up, a little
- */
- Duration_iterator iter_dur;
- assert( iter_dur );
- while ( iter_dur ) {
- Duration lower_dur = iter_dur++;
- Duration upper_dur( 0 );
- if ( iter_dur )
- upper_dur = iter_dur();
- Moment lower_mom = dur2_mom( lower_dur );
- Moment upper_mom = dur2_mom( upper_dur );
- if ( mom == lower_mom )
- return lower_dur;
- if ( mom == upper_mom ) // don-t miss last (sic)
- return upper_dur;
- if ( ( mom >= lower_mom ) && ( mom <= upper_mom ) ) {
- warning( String( "duration not exact: " ) + String( (Real)mom ) , 0 );
- if ( abs( mom - lower_mom ) < abs( mom - upper_mom ) )
- return lower_dur;
- else
- return upper_dur;
- }
- lower_dur = upper_dur;
- }
- return Duration( 0 );
+ durlog_i_ = 0;
+ dots_i_ = 0;
+ ticks_i_ = 0;
}
-Moment
-Duration_convert::plet_factor_mom( Duration dur )
-{
- if ( !dur.plet_p_ )
- return 1;
- return Moment( dur.plet_p_->iso_i_, dur.plet_p_->type_i_ );
-}
-
-Real
-Duration_convert::sync_f( Duration dur, Moment mom )
+bool
+Duration::duration_type_b(int t)
{
- return mom / dur2_mom( dur );
+ /*
+ ugh. Assuming behavior of conversion funcs on broken input.
+ */
+ return t == Duration_convert::type2_i(Duration_convert::i2_type(t));
}
+// ugh, what's this?
+// i should be called "mom()", ... or at least "length_mom()"
Moment
-Duration_convert::i2_mom( int time_i, int division_1_i )
+Duration::length() const
{
- if ( !time_i )
- return Moment( 0 );
-
- if ( division_1_i > 0 )
- return Moment( time_i, division_1_i );
- else
- return Moment( -division_1_i, time_i );
-}
-
-Duration_iterator::Duration_iterator()
-{
- cursor_dur_.type_i_ = 128;
- cursor_dur_.set_plet( 0 );
+ return Duration_convert::dur2_mom(*this);
}
-Duration
-Duration_iterator::operator ++(int)
+void
+Duration::set_plet(int i, int t)
{
- return forward_dur();
+ plet_.iso_i_ = i;
+ plet_.type_i_ = t;
}
-Duration
-Duration_iterator::operator ()()
+void
+Duration::set_plet(Duration d)
{
- return dur();
+ plet_.iso_i_ = d.plet_.iso_i_;
+ plet_.type_i_ = d.plet_.type_i_;
}
-Duration_iterator::operator bool()
+void
+Duration::set_ticks(int ticks_i)
{
- return ok();
+ assert(durlog_i_ <10);
+ assert(!dots_i_);
+ ticks_i_ = ticks_i;
}
-Duration
-Duration_iterator::dur()
+String
+Duration::str() const
{
- return cursor_dur_;
+ return Duration_convert::dur2_str(*this);
}
-Duration
-Duration_iterator::forward_dur()
-{
- // should do smart table? guessing:
- // duration wholes
- // 16 0.0625
- // 32.. 0.0703
- // 8:2/3 0.0833
- // 16. 0.0938
- // 8 0.1250
- // 16.. 0.1406
- // 4:2/3 0.1667
- // 8. 0.1875
-
- assert( ok() );
-
- Duration dur = cursor_dur_;
-
- if ( !cursor_dur_.dots_i_ && !cursor_dur_.plet_p_ ) {
- cursor_dur_.type_i_ *= 2;
- cursor_dur_.dots_i_ = 2;
- }
- else if ( cursor_dur_.dots_i_ == 2 ) {
- assert( !cursor_dur_.plet_p_ );
- cursor_dur_.dots_i_ = 0;
- cursor_dur_.type_i_ /= 4;
- cursor_dur_.set_plet( &Plet( 2, 3 ) );
- }
- else if ( cursor_dur_.plet_p_
- && ( cursor_dur_.plet_p_->iso_i_ == 2 )
- && ( cursor_dur_.plet_p_->type_i_ == 3 ) ) {
- assert( !cursor_dur_.dots_i_ );
- cursor_dur_.set_plet( 0 );
- cursor_dur_.type_i_ *= 2;
- cursor_dur_.dots_i_ = 1;
- }
- else if ( cursor_dur_.dots_i_ == 1 ) {
- assert( !cursor_dur_.plet_p_ );
- cursor_dur_.dots_i_ = 0;
- cursor_dur_.type_i_ /= 2;
- }
-
- // ugh
- if ( no_triplets_bo_g && cursor_dur_.plet_p_ && ok() )
- forward_dur();
-
- return dur;
-}
bool
-Duration_iterator::ok()
+Duration::plet_b()
{
- return ( cursor_dur_.type_i_
- && !( ( cursor_dur_.type_i_ == 1 ) && ( cursor_dur_.dots_i_ > 2 ) ) );
+ return !plet_.unit_b();
}
projects / lilypond.git / blobdiff