khodowany
491 lines
32 KiB
Python
491 lines
32 KiB
Python
"""Thematic transformations used by the existing complete-draft composer.
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Source features initialize a heard theme. Subsequent complete routes develop
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that realization, conditioned on the actual incoming musical state.
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"""
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from __future__ import annotations
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import dataclasses
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from fractions import Fraction as F
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import generator.model
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import generator.harmony
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from generator.solo import types, policy, sequences, routes, references, similarity, phrasing, profiles
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def source_notes(analysis):
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return tuple(dataclasses.replace(n,start=max(F(),n.start-analysis.body_offset),end=n.end-analysis.body_offset,
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event_id=n.sources[0],position=None) for n in analysis.melody if n.end>analysis.body_offset)
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def silence(source,incoming,part,harmony,tempo,seed):
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from generator.solo import realization
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motif=types.Motif('intentional_space',(),source.end-source.start,(),'explicit missing harmony')
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plan=types.PhrasePlan(part+'_'+source.id,source.start,source.end,motif,'space','thematic_recomposition',None,harmony.profile.register,F(),F(),
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(types.ActivitySpan(source.start,source.end,'space',F(),F()),),passage_id=source.id,passage_start=source.start,passage_end=source.end)
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draft=types.MelodicDraft(plan.id,source.start,source.end,(),(),(),(),(),incoming.home,'space',source_phrase=source,source_reference=incoming.source_reference)
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phrase=realization.checked_phrase(plan,draft,(),incoming.treatments,incoming,harmony,tempo)
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if phrase is None:return ()
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state=dataclasses.replace(phrase.state,home=incoming.home,source_reference=incoming.source_reference,callbacks=incoming.callbacks,
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history=incoming.history,returns=incoming.returns,closures=incoming.closures,register_peak=incoming.register_peak)
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original=dataclasses.replace(draft,notes=source.notes)
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return (dataclasses.replace(phrase,state=state,initial=original,refined=draft,score=0.),)
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def short_fragment(source,incoming,part,harmony,tempo,seed,final):
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"""An explicitly reduced pickup around missing harmony; not a new theme."""
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from generator.solo import leads,realization
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reference=incoming.home.notes if incoming.home else source.notes
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if not reference:return ()
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template=dataclasses.replace(reference[0],start=source.start,end=source.end,position=None,continuation=False,event_id=source.id+':reduction')
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result=[]
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for pitch in pitches(harmony,template,incoming.last.pitch.number() if incoming.last else template.pitch.number(),members=True):
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note=dataclasses.replace(template,pitch=pitch)
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motif=types.Motif('reduction',reference,source.end-source.start,(),'explicit short fragment; no claim of full motif fidelity')
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anchor=types.Anchor(note.event_id+':arrival',note.start,note.start,pitch,harmony.members(note.start,note.end),harmony.profile.register,note.end-note.start,'terminal' if final else 'intermediate',harmony.at(note.start).chord,hold_until=note.end)
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transform=types.Transformation(note.event_id,reference[0].event_id,incoming.home.id if incoming.home else '', 'fragment',note.start,note.end,(note.event_id,),((F(),note.end-note.start),),preserves=())
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draft=types.MelodicDraft(part+'_'+note.event_id,source.start,source.end,(note,),(transform,),(note.event_id,),(),(anchor,),incoming.home,'fragment',source_phrase=source,source_reference=incoming.source_reference)
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plan=types.PhrasePlan(draft.id,source.start,source.end,motif,'fragment','thematic_recomposition',None,harmony.profile.register,F(5,4),F(),ending='sustain' if final else 'connected',closure='closed' if final else 'open',passage_id=source.id,passage_start=source.start,passage_end=source.end)
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phrase=realization.checked_phrase(plan,draft,(note,),incoming.treatments,incoming,harmony,tempo)
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if phrase:
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state=dataclasses.replace(phrase.state,home=incoming.home,source_reference=incoming.source_reference,callbacks=incoming.callbacks,
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history=incoming.history,returns=incoming.returns,closures=incoming.closures,register_peak=incoming.register_peak)
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result.append(dataclasses.replace(phrase,state=state,initial=draft,refined=draft))
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return tuple(result)
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def seeds(analysis, bar, seed):
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melody=tuple(dataclasses.replace(n,start=n.start-analysis.body_offset,end=n.end-analysis.body_offset,
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event_id=n.sources[0]) for n in analysis.melody)
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groups=[]
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for i in range(len(melody)):
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for count in ((len(melody),) if len(melody)<3 else (3,4,5)):
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group=melody[i:i+count]
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if len(group)!=count or group[-1].end-group[0].start>max(bar,F(3)) or group[0].start>=8*bar:
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continue
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local=tuple(dataclasses.replace(n,start=n.start-group[0].start,end=n.end-group[0].start) for n in group)
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parent=next((s.id for s in analysis.source_phrases if s.start<=max(0,group[0].start)<s.end),'pickup')
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for treatment in ('rhythmic_seed','contour_seed','opening_fragment','characteristic_interval'):
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identity=policy.stable_rank(seed,(group,treatment))[:12]
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groups.append(types.SourceReference(identity,parent,group[0].start,group[-1].end,local,treatment))
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def rank(ref):
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rhythm={(n.start,n.end-n.start) for n in ref.notes}
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intervals={b.pitch.number()-a.pitch.number() for a,b in zip(ref.notes,ref.notes[1:])}
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return (-len(intervals),-len(rhythm),ref.start,ref.id)
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return sequences.diverse(groups,rank,lambda r:r.treatment,policy.DEFAULT.theme_seed_limit)
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def feature(reference, actual, *, treatment=None):
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treatment=treatment or reference.treatment
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required={'rhythmic_seed':('rhythm',),'contour_seed':('contour',),
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'opening_fragment':('rhythm','pitches'),'characteristic_interval':('exact_intervals',),
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'repeat_with_harmonic_adaptation':('rhythm','contour'),'answer':('contour',),
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'extend':('contour',),'fragment':('rhythm',),'callback':('rhythm','pitches'),
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'return':('rhythm','intervals'), 'develop_rhythm':('rhythm',),
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'develop_contour':('intervals',), 'continue':('contour',)}[treatment]
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original=reference.notes
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origin=original[0].start
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octave=12*round((actual[0].pitch.number()-original[0].pitch.number())/12)
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return types.IdentifyingFeature(reference.id+':'+treatment,tuple(n.event_id for n in actual),
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tuple((n.start-origin,n.end-n.start) for n in original),
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tuple(b.pitch.number()-a.pitch.number() for a,b in zip(original,original[1:])),reference.id,required,
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tuple(n.pitch.number()+octave for n in original))
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def rhythm_windows(library,meter,length,context):
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from generator.solo import drafts
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key=('theme-rhythm',id(library),meter,length)
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if key not in context.pools:
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patterns={}
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bar=F(meter.split('/')[0])*4/int(meter.split('/')[1])
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if length>bar:
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# The two-bar catalog contains quarter-note masks. Include combinations
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# of the richer one-bar material as complete timing alternatives, rather
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# than accidentally excluding eighths/dotted values by snippet length.
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# Pitch paths and feature contracts span the assembled rhythm's seams.
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split=bar
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for left,left_id in rhythm_windows(library,meter,split,context):
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for right,right_id in rhythm_windows(library,meter,length-split,context):
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combined=(*left,*((a+split,b+split) for a,b in right))
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if len(combined)<=16:patterns.setdefault(combined,left_id+' + '+right_id)
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for identifier,pattern,total in drafts.catalog(library,meter):
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if total<length:continue
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for offset in sorted({F(),*(a for a,_ in pattern)}):
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if offset+length>total or any(a<offset<b or a<offset+length<b for a,b in pattern):continue
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selected=tuple((a-offset,b-offset) for a,b in pattern if offset<=a and b<=offset+length)
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if selected and len(selected)<=16:patterns.setdefault(selected,identifier)
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context.pools[key]=sequences.diverse(tuple(patterns.items()),
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lambda x:(not .7*float(length)<=len(x[0])<=1.8*float(length),policy.stable_rank('rhythm-window',x[0])),
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lambda x:(len(x[0]),x[0][0][0],any(a[1]!=b[0] for a,b in zip(x[0],x[0][1:]))),8)
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return context.pools[key]
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def patterns(ref, start, finish, rhythms, meter, context, *, home=None, operation='introduce', terminal=False, ending=None):
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length=finish-start; values={}
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if home and operation in ('repeat_with_harmonic_adaptation','return'):
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pattern=tuple((n.start,n.end) for n in home.notes if n.end<=length)
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if pattern:values[pattern]='heard-theme'
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prefix=tuple((n.start,n.end) for n in ref.notes)
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fixed_rhythm=ref.treatment in ('rhythmic_seed','opening_fragment','callback') or operation in ('fragment','repeat_with_harmonic_adaptation','return','develop_rhythm')
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if fixed_rhythm:
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duration=prefix[-1][1]
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if duration==length:values[prefix]=ref.id
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if duration<length:
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for tail,label in rhythm_windows(rhythms,meter,length-duration,context):
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values[(*prefix,*((a+duration,b+duration) for a,b in tail))]=ref.id+' + '+label
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else:
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values.update(rhythm_windows(rhythms,meter,length,context))
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if home and operation=='answer':
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for p,label in rhythm_windows(rhythms,meter,length,context):values.setdefault(p,label)
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if not fixed_rhythm:
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# Develop the heard timing, preserving total duration. Eighth/quarter/dotted
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# alternatives are actual contracts, not failed copies of a rhythmic seed.
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for original,label in tuple(values.items()):
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for i,(a,b) in enumerate(original):
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if b-a==1:
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values[(*original[:i],(a,a+F(1,2)),(a+F(1,2),b),*original[i+1:])]=label+'; diminution'
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for i,((a,b),(c,d)) in enumerate(zip(original,original[1:])):
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if b!=c:continue
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for split in (a+F(1,2),a+F(3,2),d-F(1,2)):
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if a<split<d:
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values[(*original[:i],(a,split),(split,d),*original[i+2:])]=label+'; rhythmic alteration'
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if ending:
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arrivals={}
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arrival=ending.earliest-start
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for original,label in values.items():
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head=tuple((a,min(b,arrival)) for a,b in original if a<arrival)
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if len(head)>=len(ref.notes):
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arrivals[(*head,(arrival,ending.hold_until-start))]=label+'; planned sustained close'
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values=arrivals
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return sequences.diverse(tuple(values.items()),lambda x:(len(x[0])>16,policy.stable_rank(ref.id,x[0])),
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lambda x:(len(x[0]),tuple(b-a for a,b in x[0][:3]),x[0][0][0]),policy.DEFAULT.theme_rhythm_alternatives)
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def pitches(harmony,note,base,*,members=False,limit=6,incoming=None):
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from generator.solo.leads import available
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domain=available(harmony,note.start,note.end,members=members or note.end-note.start>=2)
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if members:
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return phrasing.destination_options(domain,lambda p:(phrasing.destination_cost(p,note.start,note.end,harmony,incoming,base),p.number()),
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lambda p:p,lambda p:note.start,harmony,limit)
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return sequences.diverse(domain,lambda p:(abs(p.number()-base),p.number()),
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lambda p:((p.number()-base>0)-(p.number()-base<0),p.number()//12),limit)
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def relative_steps(notes,harmony):
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result=[]
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for a,b in zip(notes,notes[1:]):
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scale=harmony.at(b.start).scale
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try:step=types.scale_index(scale,b.pitch.number())-types.scale_index(scale,a.pitch.number())
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except ValueError:
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lo,hi=sorted((a.pitch.number(),b.pitch.number()))
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intervening=range(lo+1,hi+1) if b.pitch.number()>a.pitch.number() else range(lo,hi)
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count=sum(p%12 in scale.pitches for p in intervening)
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step=count if b.pitch.number()>a.pitch.number() else -count
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result.append(step)
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return tuple(result)
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def instantiate(templates,first,steps,harmony):
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result=[dataclasses.replace(templates[0],pitch=first)]
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for note,step in zip(templates[1:],steps):
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span=harmony.at(note.start)
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if not span or not span.scale:return ()
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options=routes.advance(span.scale,result[-1].pitch.number(),step)
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if not options:return ()
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p=options[0]
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if not harmony.profile.permits(p.number()) or p.number()%12 not in types.permitted(harmony.choices,note.start,note.end):return ()
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result.append(dataclasses.replace(note,pitch=p))
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return tuple(result) if len(result)==len(templates) else ()
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def prefix_paths(templates,ref,first,harmony,library):
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if not hasattr(harmony,'theme_prefixes'):harmony.theme_prefixes={}
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key=(templates[:len(ref.notes)],ref,first,id(library))
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if key not in harmony.theme_prefixes:
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harmony.theme_prefixes[key]=_prefix_paths(templates,ref,first,harmony,library)
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return harmony.theme_prefixes[key]
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def _prefix_paths(templates,ref,first,harmony,library):
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count=len(ref.notes); original=ref.notes
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if count==1:return ((dataclasses.replace(templates[0],pitch=first),),)
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if ref.treatment in ('opening_fragment','characteristic_interval','callback'):
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delta=first.number()-original[0].pitch.number()
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if ref.treatment in ('opening_fragment','callback') and delta%12:return ()
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result=[]
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from generator.solo.leads import available
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for template,n in zip(templates,original):
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target=n.pitch.number()+delta
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p=next((p for p in available(harmony,template.start,template.end,members=template.end-template.start>=2) if p.number()==target),None)
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if p is None:return ()
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result.append(dataclasses.replace(template,pitch=p))
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return (tuple(result),)
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paths=[]
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if ref.treatment == 'return':
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from generator.solo.leads import available
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delta=first.number()-original[0].pitch.number()
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direct=[]
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for template,n in zip(templates,original):
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p=next((p for p in available(harmony,template.start,template.end,members=template.end-template.start>=2) if p.number()==n.pitch.number()+delta),None)
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if p is None: break
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direct.append(dataclasses.replace(template,pitch=p))
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if len(direct)==count: paths.append(tuple(direct))
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end_template=templates[count-1]
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source_motion=original[-1].pitch.number()-original[0].pitch.number()
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for target in pitches(harmony,end_template,first.number()+source_motion,limit=4):
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template=tuple(dataclasses.replace(n,pitch=first if i==0 else target) for i,n in enumerate(templates[:count]))
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paths.extend(r.notes for r in routes.candidates(template,{template[-1].event_id},harmony,library,harmony.profile.register,'seed '+ref.id))
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valid=[p for p in paths if not references.feature_error(feature(ref,p),p)]
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return sequences.diverse(valid,lambda ns:(sum(abs(b.pitch.number()-a.pitch.number()) for a,b in zip(ns,ns[1:])),tuple(n.pitch for n in ns)),
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lambda ns:sequences.family(tuple(b.pitch.number()-a.pitch.number() for a,b in zip(ns,ns[1:]))),4)
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@dataclasses.dataclass(frozen=True)
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class Unit:
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notes: tuple[types.Note,...]
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feature: types.IdentifyingFeature
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reference: types.SourceReference
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operation: str
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anchor: types.Anchor
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score: float
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source: str
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routes: tuple[types.RouteCandidate,...] = ()
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def unit_candidates(ref,start,finish,incoming,harmony,library,rhythms,meter,context,*,home=None,operation='introduce',terminal=False,batch=0,ending=None,goal=None):
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# History is evaluated by the caller after retrieving these concrete options.
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# Every state component used to construct this pool is in its cache key.
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if not hasattr(harmony,'fingerprint'):harmony.fingerprint=policy.stable_rank('harmony',(harmony.choices,harmony.profile))
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key=('theme-unit',ref,start,finish,incoming.last,incoming.direction,incoming.treatments,incoming.history,home,operation,ending,goal,batch,harmony.fingerprint,id(library),id(rhythms),policy.DEFAULT)
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if key in context.results:
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context.diagnostics['cache_hits']+=1;return context.results[key]
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result=[]; count=len(ref.notes)
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jobs=[]
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for pattern,label in patterns(ref,start,finish,rhythms,meter,context,home=home,operation=operation,terminal=terminal,ending=ending):
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if len(pattern)<count or len(pattern)>16:continue
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templates=tuple(types.Note(start+a,start+b,ref.notes[0].pitch,tuple(s for n in ref.notes for s in n.sources),
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'theme',event_id=f'{ref.id}:{start}:{i}') for i,(a,b) in enumerate(pattern))
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base=incoming.last.pitch.number() if incoming.last else harmony.profile.reference if harmony.profile.reference is not None else ref.notes[0].pitch.number()
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firsts=pitches(harmony,templates[0],base,limit=6 if batch else 3)
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targets=(ending.pitch,) if ending else pitches(harmony,templates[-1],goal if goal is not None else base,members=True,limit=policy.DEFAULT.theme_destinations,incoming=incoming)
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for first in firsts:
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for target in targets:
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# Rank joint jobs, retaining rhythm and destination coverage before
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# expensive path instantiation. The budget is spent on complete routes.
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rank=harmony.profile.cost(first.number())+max(0,abs(first.number()-base)-5)/12+phrasing.destination_cost(target,templates[-1].start,templates[-1].end,harmony,incoming,goal if goal is not None else base,terminal)
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jobs.append((rank,templates,label,first,target))
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jobs.sort(key=lambda j:(j[0],policy.stable_rank(ref.id,(j[1],j[3],j[4]))))
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selected=[];rhythm_seen=set();target_seen=set();entry_seen=set();degrees_seen=set()
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for job in jobs:
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family=phrasing.destination_family(job[4],job[1][-1].start,harmony)
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if family not in degrees_seen:
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selected.append(job);degrees_seen.add(family)
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for job in jobs:
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rhythm=tuple((n.start,n.end) for n in job[1]);target=job[4].number();entry=job[3].number()
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if rhythm not in rhythm_seen or target not in target_seen or entry not in entry_seen:
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if job not in selected:selected.append(job)
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rhythm_seen.add(rhythm);target_seen.add(target);entry_seen.add(entry)
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job_limit=policy.DEFAULT.theme_route_jobs*(batch+1)
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for job in jobs:
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if len(selected)>=job_limit:break
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if job not in selected:selected.append(job)
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for _,templates,label,first,target in selected[:job_limit]:
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proposed=[]
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if home and operation in ('repeat_with_harmonic_adaptation','return') and len(templates)==len(home.notes):
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heard=instantiate(templates,first,home.degree_steps,harmony)
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if heard and heard[-1].pitch==target:proposed.append((heard,()))
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for prefix in prefix_paths(templates,ref,first,harmony,library)[:2+batch]:
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if len(prefix)==len(templates):
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if prefix[-1].pitch==target:proposed.append((prefix,()))
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continue
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tail=(prefix[-1],*templates[count:])
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tail=(*tail[:-1],dataclasses.replace(tail[-1],pitch=target))
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for route in routes.candidates(tail,{tail[-1].event_id},harmony,library,harmony.profile.register,operation+' '+ref.id)[:3+batch]:
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proposed.append(((*prefix[:-1],*route.notes),(route,)))
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seen=set()
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for actual,connections in proposed:
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identity=tuple(n.pitch.number() for n in actual)
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if identity in seen:continue
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seen.add(identity)
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core=actual[:count]; contract=feature(ref,core,treatment=operation if operation!='introduce' else None)
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if references.feature_error(contract,actual):continue
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last=actual[-1]
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if last.pitch.number()%12 not in harmony.members(last.start,last.end):continue
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checked=harmony.evaluate(actual,until=finish,complete=True)
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if not checked.valid:continue
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entry=max(0,abs(first.number()-incoming.last.pitch.number())-5)/12 if incoming.last else 0.
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leaps=sum(max(0,abs(b.pitch.number()-a.pitch.number())-5)/12 for a,b in zip(actual,actual[1:]))/max(1,len(actual)-1)
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direction=min(1,abs(last.pitch.number()-goal)/12) if goal is not None else 0.
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# Activity belongs to the complete phrase; contracts are pass/fail.
|
|
score=harmony.profile.cost(profiles.weighted_center(actual))+2*checked.exposure+entry+leaps+phrasing.destination_cost(last.pitch,last.start,last.end,harmony,incoming,goal,terminal)
|
|
anchor=ending or types.Anchor(last.event_id+':arrival',last.start,last.start,last.pitch,harmony.members(last.start,last.end),harmony.profile.register,
|
|
last.end-last.start,'intermediate',harmony.at(last.start).chord,hold_until=last.end)
|
|
result.append(Unit(actual,contract,ref,operation,anchor,score,label,connections))
|
|
unique={tuple((n.start,n.end,n.pitch) for n in u.notes):u for u in result}
|
|
selected=sequences.diverse(tuple(unique.values()),lambda u:(u.score,policy.stable_rank(ref.id,u.notes)),
|
|
lambda u:(u.notes[0].pitch.number()//12,u.notes[-1].pitch.number(),tuple(n.end-n.start for n in u.notes[:count])),policy.DEFAULT.theme_unit_alternatives)
|
|
context.diagnostics['generated_candidates']+=len(selected)
|
|
context.results[key]=selected
|
|
return selected
|
|
|
|
|
|
def home_reference(home,operation):
|
|
# A return refers to the opening the listener heard, not whichever later
|
|
# three-note turn happens to rank best. Development may use its smaller core.
|
|
notes = home.signature or home.notes[:min(4, len(home.notes))]
|
|
if operation not in ('return', 'repeat_with_harmonic_adaptation'):
|
|
notes = notes[:3]
|
|
origin=notes[0].start
|
|
notes=tuple(dataclasses.replace(n,start=n.start-origin,end=n.end-origin) for n in notes)
|
|
treatment='return' if operation=='return' else 'rhythmic_seed' if operation in ('repeat_with_harmonic_adaptation','fragment','develop_rhythm') else 'contour_seed'
|
|
return types.SourceReference(home.id,home.parent,home.source_start,home.source_start+home.duration,notes,treatment)
|
|
|
|
|
|
def make_home(unit,harmony,start=None,end=None):
|
|
from generator.solo.realization import make_identity
|
|
start=unit.notes[0].start if start is None else start
|
|
identity=policy.stable_rank('solo-theme',(unit.reference.id,unit.notes))[:16]
|
|
home=make_identity('solo_theme_'+identity,unit.reference.id,unit.notes,start,unit.notes[-1].end if end is None else end,'introduce',harmony)
|
|
return dataclasses.replace(home,degree_steps=relative_steps(unit.notes,harmony),signature=home.notes[:len(unit.reference.notes)])
|
|
|
|
|
|
def phrase_candidates(source,analysis,incoming,part,harmony,library,rhythms,meter,tempo,context,seed,*,stage='elaborated',batch=0,final=False,solo_end=None):
|
|
from generator.solo import leads,realization
|
|
if source.end-source.start<2:
|
|
return short_fragment(source,incoming,part,harmony,tempo,seed,final)
|
|
bar=F(meter.split('/')[0])*4/int(meter.split('/')[1])
|
|
unit_length=2*bar
|
|
solo_end=solo_end or max(c.span.end for c in harmony.choices)
|
|
head=source_notes(analysis)
|
|
seed_key=('source-seeds',analysis,bar,seed)
|
|
if seed_key not in context.pools:context.pools[seed_key]=seeds(analysis,bar,seed)
|
|
roots=context.pools[seed_key]
|
|
ending_options=phrasing.endings(source,incoming,part,harmony,bar,limit=8*(batch+1),final=final)
|
|
states=[(0.,(),incoming.home,incoming,ending) for ending in ending_options]
|
|
cursor=source.start
|
|
while cursor<source.end and states:
|
|
finish=min(cursor+unit_length,source.end)
|
|
if source.end-finish<6 or any(ending.earliest<finish for *_,ending in states):finish=source.end
|
|
next_states=[]
|
|
for cost,units,home,state,ending in states:
|
|
introducing=home is None
|
|
if introducing:
|
|
requests=[(r,'introduce') for r in roots]
|
|
else:
|
|
operations=['continue'] if finish==source.end and cursor>source.start else ['develop_contour','develop_rhythm']
|
|
if cursor==source.start:operations.append('return')
|
|
requests=[(home_reference(home,op),op) for op in operations]
|
|
# A uniform duration alone is not identifying musical evidence.
|
|
requests=[(r,op) for r,op in requests if op!='develop_rhythm' or len({n.end-n.start for n in r.notes})>1 or any(a.end!=b.start for a,b in zip(r.notes,r.notes[1:]))]
|
|
if cursor>=8*bar and cursor==source.start and incoming.callbacks<2:
|
|
requests.extend((dataclasses.replace(r,treatment='callback'),'callback') for r in roots[:1] if r.end-r.start<=bar)
|
|
for ref,operation in requests:
|
|
if introducing and source.end-source.start<2*bar and ending.earliest-cursor<ref.notes[-1].end:
|
|
# A missing-harmony boundary can leave less than one full statement.
|
|
# Declare a smaller contour seed; never pretend it proves the full motif.
|
|
count=min(3,int(2*(ending.earliest-cursor)),len(ref.notes))
|
|
if count<2:
|
|
if len(ref.notes)!=1:continue
|
|
n=dataclasses.replace(ref.notes[0],end=min(ref.notes[0].end,F(1),ending.earliest-cursor))
|
|
ref=dataclasses.replace(ref,id=ref.id+':constrained_pitch',notes=(n,),treatment='opening_fragment')
|
|
else:
|
|
ref=dataclasses.replace(ref,id=ref.id+':constrained_contour',notes=ref.notes[:count],treatment='contour_seed')
|
|
if operation=='continue' and state.notes:
|
|
recent=state.notes[-min(3,len(state.notes)):]
|
|
origin=recent[0].start
|
|
ref=dataclasses.replace(ref,notes=tuple(dataclasses.replace(n,start=n.start-origin,end=n.end-origin) for n in recent),treatment='contour_seed')
|
|
if ref.notes[-1].end>finish-cursor:
|
|
reduced=tuple(n for n in ref.notes if n.end<=finish-cursor)
|
|
if len(reduced)<2:continue
|
|
ref=dataclasses.replace(ref,notes=reduced,treatment='contour_seed')
|
|
operation='continue'
|
|
terminal=finish==source.end
|
|
base=state.last.pitch.number() if state.last else ref.notes[0].pitch.number()
|
|
goal=ending.pitch.number() if terminal else round(base+(ending.pitch.number()-base)*float((finish-cursor)/(source.end-cursor)))
|
|
options=unit_candidates(ref,cursor,finish,state,harmony,library,rhythms,meter,context,home=home,operation=operation,
|
|
terminal=terminal,batch=batch,ending=ending if terminal else None,goal=goal)
|
|
for unit in options:
|
|
if introducing and similarity.near_copy(unit.notes,head,cursor,finish)['near_copy']:
|
|
context.diagnostics['near_copy_rejections']=context.diagnostics.get('near_copy_rejections',0)+1;continue
|
|
actual_home=home or make_home(unit,harmony,cursor,finish)
|
|
figure=phrasing.heard(unit.notes,operation,unit.anchor)
|
|
repetition=phrasing.repetition(figure,state.history,bar)
|
|
appearance=phrasing.appearance_cost(operation,state,cursor,solo_end) if home else 0.
|
|
history=phrasing.remember(state.history,figure,bar)
|
|
following=dataclasses.replace(state,home=actual_home,last=unit.notes[-1],notes=unit.notes,source_reference=state.source_reference or ref,
|
|
history=history,returns=(*state.returns,*((cursor,) if operation=='return' else ())),
|
|
register_peak=max(state.register_peak,*(n.pitch.number() for n in unit.notes)))
|
|
next_states.append((cost+unit.score+.8*repetition+appearance,(*units,unit),actual_home,following,ending))
|
|
def rank(value):
|
|
cost,units,home,state,ending=value
|
|
attacks=sum(len(u.notes) for u in units)
|
|
remaining=max(F(),ending.earliest-finish)
|
|
possible=attacks+2*float(remaining)+(0 if finish==source.end else 1)
|
|
expected=float(source.end-source.start)
|
|
activity_bound=.35*max(0,expected-possible,attacks-1.5*expected)/max(1,float(source.end-source.start)/4)
|
|
return cost/max(1,len(units))+activity_bound,policy.stable_rank(seed,tuple(u.notes for u in units))
|
|
states=sequences.diverse(next_states,rank,
|
|
lambda v:(v[2].id,v[4].pitch.number(),v[4].duration,len(v[1][-1].notes),v[1][-1].operation),policy.DEFAULT.theme_continuations)
|
|
if not states:return ()
|
|
cursor=finish
|
|
result=[]
|
|
for cost,units,home,state,ending in states:
|
|
plain=tuple(n for u in units for n in u.notes)
|
|
if similarity.near_copy(plain,head,source.start,source.end)['near_copy']:
|
|
context.diagnostics['near_copy_rejections']=context.diagnostics.get('near_copy_rejections',0)+1;continue
|
|
features=tuple(u.feature for u in units)
|
|
# Cell tails are not compulsory melodic arrivals. Only the selected close
|
|
# has a sounding contract; intermediate turns remain editable.
|
|
anchors=(ending,)
|
|
tails=(types.SustainedTail(ending.earliest,ending.hold_until,ending.pitch.number()),)
|
|
options=[(plain,(),())]
|
|
if stage=='elaborated':
|
|
for actual,edit,route in leads.elaborate(plain,features,harmony,library,rhythms,meter,source,sustain_entry=True,tails=tails):
|
|
options.append((actual,(edit,),(route,)))
|
|
for notes,edits,selected_routes in options:
|
|
identifier=part+'_'+source.id+'_'+policy.stable_rank(seed,leads.signature(notes))[:12]
|
|
transforms=tuple(types.Transformation(identifier+f':{i}',u.reference.id,home.id,u.operation,u.notes[0].start,u.notes[-1].end,
|
|
tuple(n.event_id for n in notes if u.notes[0].start<=n.start<u.notes[-1].end),tuple((n.start-u.notes[0].start,n.end-u.notes[0].start) for n in notes if u.notes[0].start<=n.start<u.notes[-1].end),preserves=(),source=u.reference.id+'; rhythm '+u.source) for i,u in enumerate(units))
|
|
source_ref=state.source_reference
|
|
draft=types.MelodicDraft(identifier,source.start,source.end,notes,transforms,(),(),anchors,home,'introduce' if not incoming.home else 'develop',
|
|
features=features,reference=source_ref.id,reference_motif=home,source_phrase=source,source_reference=source_ref,
|
|
source_links=tuple((n.event_id,n.sources) for n in notes),sustained_tails=tails)
|
|
motif=types.Motif(home.id,home.notes,home.duration,(), 'realized solo theme from '+source_ref.id)
|
|
landmark=types.Landmark(ending.earliest,ending.latest,ending.pitch.number(),ending.pitch.number(),0,'sustained destination')
|
|
plan=types.PhrasePlan(identifier,source.start,source.end,motif,draft.relationship,'thematic_recomposition',None,harmony.profile.register,F(5,4),
|
|
source.end-ending.hold_until,phrasing.activity(source,ending),(landmark,), 'sustain','closed',seed,
|
|
source.id,source.start,source.end,(anchors,))
|
|
before_rhythm=draft
|
|
from generator.solo import gesture_rhythm
|
|
if stage=='elaborated':
|
|
draft,rhythm_edits=gesture_rhythm.revise(draft,harmony,incoming.treatments)
|
|
notes=draft.notes;edits=(*edits,*rhythm_edits);transforms=draft.transformations
|
|
phrase=realization.checked_phrase(plan,draft,notes,incoming.treatments,incoming,harmony,tempo,edits)
|
|
if phrase is None:continue
|
|
score=phrasing.evaluate(notes,incoming,harmony,source.start,source.end,bar)+.1*gesture_rhythm.fragmentation(notes)
|
|
score+=sum(phrasing.destination_cost(u.anchor.pitch,u.anchor.earliest,u.anchor.hold_until,harmony,incoming,phrasing.register_goal(incoming,part,u.notes[0].pitch.number(),harmony.profile),u.anchor.role=='terminal') for u in units)/len(units)
|
|
appearance_state=incoming
|
|
for unit in units:
|
|
score+=phrasing.appearance_cost(unit.operation,appearance_state,unit.notes[0].start,solo_end)/len(units)
|
|
if unit.operation=='return':
|
|
appearance_state=dataclasses.replace(appearance_state,returns=(*appearance_state.returns,unit.notes[0].start))
|
|
score+=.05*phrase.state.travel/max(1,len(notes))/2000
|
|
history=incoming.history
|
|
for transform in transforms:
|
|
group=tuple(n for n in notes if n.event_id in transform.events)
|
|
if group:history=phrasing.remember(history,phrasing.heard(group,transform.operation,ending if group[-1].end==ending.hold_until else None),bar)
|
|
current=dataclasses.replace(phrase.state,next_destination=phrasing.next_destination(ending,harmony),home=home,source_reference=source_ref,callbacks=incoming.callbacks+sum(u.operation=='callback' for u in units),
|
|
history=history,returns=state.returns,closures=incoming.closures+1,register_peak=max(state.register_peak,*(n.pitch.number() for n in notes)))
|
|
if not incoming.home:
|
|
introduced=tuple(n for n in notes if n.start<units[0].notes[-1].end)
|
|
heard=dataclasses.replace(home,notes=tuple(dataclasses.replace(n,start=n.start-source.start,end=n.end-source.start,position=None) for n in introduced),
|
|
degree_steps=relative_steps(introduced,harmony),signature=tuple(dataclasses.replace(n,start=n.start-source.start,end=n.end-source.start,position=None) for n in introduced[:len(units[0].reference.notes)]))
|
|
current=dataclasses.replace(current,home=heard,themes=(heard,))
|
|
source_control=leads.shift(source.notes,next((o for o in (0,1,-1,2,-2) if all(41<=n.pitch.number()+12*o<=76 for n in source.notes)),0))
|
|
original=dataclasses.replace(draft,id=identifier+':source',notes=source_control,features=(),anchors=(),structural=(),sustained_tails=())
|
|
refined=dataclasses.replace(draft,id=identifier+':plain',notes=plain)
|
|
result.append(dataclasses.replace(phrase,score=score,state=current,initial=original,refined=refined,before_rhythm=before_rhythm,routes=(*tuple(r for u in units for r in u.routes if all(any((n.event_id,n.start,n.end,n.pitch)==(a.event_id,a.start,a.end,a.pitch) for a in notes) for n in r.notes)),*selected_routes)))
|
|
return sequences.diverse(result,lambda p:(p.score,policy.stable_rank(seed,p.draft.id)),
|
|
lambda p:(p.state.home.id,p.state.last.pitch.number(),p.anchors[-1].duration,len(p.state.returns)),policy.DEFAULT.phrase_alternatives)
|