1 Features you cannot find in the doco as working, should be mentioned
4 This is an assorted collection of stuff that will be done, might be
5 done, or is an idea that I want to think about
7 Most of the items are marked in the code as well, with full explanation.
8 grep for TODO and ugh/ugr/urg
10 * scm-ify \property values.
12 * move class Lookup {} into scm
16 * update mi2mu for lilypond 1.1
22 * ly2dvi barfs on linewidth = -1.
32 * fix height of / collisions with lyrics (chords),
33 see input/test/vertical-text.ly
36 - one volta spanner per score
37 - repeat bars span staffs
38 - placement alternative number
40 * latex bla.tex broken (titles / \lilyfooter stuff?)
44 * \breathmark TeX macro
48 * add new glyphs to font.ly
50 * formatting of input stuff.
52 * \notes{ a \< b \cr } vs \notes{ a \< b \! }
54 * if possible, it might be nice for a warning to appear if someone does
55 \translator with no name and without assigning it to an
60 * \type Voice \times 2/3 { [c8 c16 c16 c16 c16] }
62 * fix singleStaffBracket
64 * repeat bars: need distance after ":|" and before "|:"
66 Summary of minor spelling irregularities:
67 - capitalization/use of underscores in property names
69 * fix SkipBars -> skipBars
71 * \shape 1st dim skipped?
73 * fix marks/barnumbers/marginal notes
76 lbheel = \script { "bheel" 0 0 -1 0 0 }
77 rbheel = \script { "bheel" 0 0 1 0 0 }
78 lbtoe = \script { "btoe" 0 0 -1 0 0 }
79 rbtoe = \script { "btoe" 0 0 1 0 0 }
80 lfheel = \script { "fheel" 0 0 -1 0 0 }
81 rfheel = \script { "fheel" 0 0 1 0 0 }
82 lftoe = \script { "ftoe" 0 0 -1 0 0 }
83 rftoe = \script { "ftoe" 0 0 1 0 0 }
87 portato= \script { "portato" 0 -1 0 1 0 }
90 * uniformise recent feta contributions.
92 * check out legal/(c) matters for scores.
94 * check out GCC signatures?
96 * Align_element::padding ?
98 * uniformise property names.
100 * ydirection <-> yDirection
102 * typo checks on property names?
104 * use streambufs and iostream
105 to provide IO handling for TeX stream, mudela stream, data-file.
107 * seriously buffer TeX output (do profile of writing .5 mb TeX file.)
109 * strip EXEs before installing
111 * zip target for binary windows dist (JBR)
113 * junking \skip req in lyrics
116 - \type -> \context ?
120 - mix engraver hacking with music ?
121 - \once\property KEY = VAL
122 - \addtranslator, \removetranslator
123 - junk ^ and _ for scripts
127 * percussion note heads
129 * mi2mu empty staffs.
131 * midi_instrument -> midiInstrument
133 * horizontal centering of dynamics
135 * \font\fontA=feta20.afm (.afm?)
139 * stable make/config stuff
141 * $DEPENDENCIES_OUTPUT support
143 * fix weird behaviour when .AFMs/.SCMs not found.
145 * Xdvi zooming ?! Try to understand GS garbage collection.
146 gs: Error: /undefined in draw_beam
149 * fix vertical alignment and stafflines
151 * GrandStaff needs more work -- I want a single word
152 `harpsichord' to the left of the grandstaff, not one on each
153 stave. (Organ staff -- with separate pedal -- but common
154 properties may be something to think about. Of course for
155 organ you want to be able to give stop indications on the way
156 through, so the \property Voice.Instrument would be a stop,
157 and \property GrandStaff.instrument would be PipeOrgan...)
159 * revise the Score_priority_align_engraver concept. It sucks.
161 * make new VoiceOne, VoiceTwo, VoiceThree contexts with
162 ydirection and hshift preset
164 * *.yo: fix pod manpage layout legacy
166 * text-items clash with stems/beams
168 * --include, -I option for ly2dvi (pass on to lily)
170 * fix placement of beam-less abbrev
173 <{\voiceone cis4. cis8 cis4 | cis4 cis cis | r1 }
174 {\voicetwo cis,4 r r | r2. | r1 }> |
177 * try to use template<Type> iso MACRO(Type)
179 - NEWS: ... Musical_pitch (analogous to Duration and Rhythmic_req)
180 think about, analogous to pitch:
181 * { a4 a16 } c <-- duration of c?
182 * <a4 b8> c <-- duration of c?
186 * fix audio-items (don't use (input) requests, but copy data)
188 * make sure all ex's have a mudela-version
190 * do rest-collisions for Multi_measure_rests as well.
192 * split error/warning in error/warning/non_fatal_error
194 * add a Duration_convert member to Duration_iter to set parameters.
195 Junk global duration settings.
199 * minimum length second part broken tie
201 * en-,discouraged linebreaking:
202 - handle DISALLOW < penalty > FORCE
203 - discourage breaking of slurs
208 * fix variable define/lookup parser global<->paper
210 * fix title/instrument placements; see input/test/title.ly
212 * <\voiceone c4. \voicetwo c4>
214 * add full cello suites to web site (kom op, Maarten!)
216 * Rethink Time_description
217 * \cadenza , \meter, \grouping should all be \properties
222 - abbreviation-beam -> (measured/unmeasured) tremolo
223 - partial -> anacrouse
227 * robustify Beam (in case of no stems, 32nd notes)
229 * decentralised spring factory
231 * move paper vars into engraver properties
233 * check for groff / troff/ nroff et
235 * more intelligent file searching
236 - make LilyPond RPM fully relocatable
239 - break-up heavily-nested score blocks
241 * disable spaces in TeX stuff
243 * handle ^C for tmp/file creation.
246 * dots & rest collisions.
254 * versioning for Feta
256 * the warning about the negative slur/tie length appears twice
259 * The `3' in the meter key is a one or two pixels too thin (at 600dpi)
262 * the bracket is ugly (wings are too parabolic, should be more circular)
264 * better hshift (dots, distance, head dependent)
266 * clefs (AG): The "8" should appear closer to the actual clef,
269 * put errorlevel in Input class
273 * integrate midi-elts from mi2mu and lily?
276 FMR: Free memory read:
277 * This is occurring while in:
278 Bar_column::do_substitute_dependency(Score_element*,Score_element*) [bar
280 Score_element::unlink() [score-elem.cc:383]
281 Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
283 Paper_score::calc_breaking() [p-score.cc:189]
284 Paper_score::process() [p-score.cc:203]
285 Score::run_translator(Music_output_def*) [score.cc:117]
286 * Reading 4 bytes from 0x65d3a0 in the heap.
287 * Address 0x65d3a0 is 160 bytes into a freed block at 0x65d300 of 208 bytes.
288 * This block was allocated from:
290 __builtin_new [libgcc.a]
291 Span_score_bar::clone()const [span-score-bar.hh:20]
292 Item::copy_breakable_items() [item.cc:69]
293 Item::do_breakable_col_processing() [item.cc:89]
294 Score_element::calcalute_dependencies(int,int,void(Score_element::*)()*)
296 * There have been 22 frees since this block was freed from:
298 __builtin_delete [libgcc.a]
299 Span_score_bar::~Span_score_bar() [span-score-bar.hh:18]
300 Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
302 Paper_score::calc_breaking() [p-score.cc:189]
303 Paper_score::process() [p-score.cc:203]
304 Postprocessing elements...
305 TeX output to score-bar-scripts.tex...
310 * make GCC warn about ctor that leaves member vars uninitialised.
312 * redhat (v?) graphical install bomb-out?
314 * GNU diff 2.7: diff -rN does not see a new directory with empty file
316 * GNU patch 2.1: <must find simple example> if patch chokes on a
317 hunk, or on allegedly unsorted hunks in a diff, it may stop
318 without a trace of failure (create .rej file, print error or
319 dump core) and just ignore any further diffs.
323 f = fopen ("/dev/null", "r")
328 * GNU indent: handle C++
331 - 'double-fix' mode: ignore identical fix, rather than suggest
332 to revert patch direction when (more or less? exactly) the same
338 - fix position of bar number
339 - stack scripts in chords:
340 % fingering: footing:
341 < a-4 c-2 g-1 > < c-\ltoe e-\lheel >
343 - slur parts as a script
344 - stack parameterised scripts for fingering and footing:
347 - automatically add a \version if not present.
350 - convert-mudela -e empty.ly
353 - should handle block comments too.
354 - handle lexer modes (\header, \melodic, \lyric) etc.
357 - fontlock: \melodic \melodic
359 * use properties for:
364 - bartypes (get rid of derived Span_bar_engravers)
369 - optimal pagebreaking.
371 * Unicode support? -> man 7 unicode
374 - detect of 16/8 bit files
375 - examples to go with it.
378 - write a faster Spring_spacer (without matrices if possible)
379 - relate energybound to linelen unitspace fontsize etc.
380 - used fixed point fp?
383 - output header info to MIDI too.
385 * a musical dictionary. See Documentation/vocabulary-*, other
395 - guitar chords (fret diagrams)
396 - other chord name styles (american(?) style)
401 - derive lily_stream, Dstream, texstream from ostream?
402 - indentable stream as baseclass for TeX stream, lily stream, Dstream.
403 - use dstream feature in mi2mu
404 - integrate IO checking into stream class
411 * add to MIDI output:
413 - ornaments (and trills?)
418 - account for rhythmic position in measure
422 - make separate class for Grace_*_engravers
423 (which is at Voice_gravs level)
424 - make encapsulated spacing problems.
426 * accidentals per Voice_group
428 * Output class, handles : (smallish)
429 - help text /(c) notice?
431 - warning /errors/progress
432 - abort on error/warning; exit status
433 - quiet/ignore-version options
438 * elaborate Staff_side baseclass:
445 - PS lines to .eps files
446 - write custom prolog
449 * Output an output format independent (ofi) typeset file; and
450 make ofi2 TeX, MusiXTex, Display PostScript, PostScript,
451 Ascii... interpreters. (difficult)
454 - Common Music Notation
455 - PostScript output (esp. Beams, Slurs, etc)
456 - Move all Score_elems, into libmutype.a
460 - Doc (C) stuff of sheet music
461 - a better format? SGML? TeX? Info?
464 * more spanners (smallish)
468 * Rewrite Stem, Beam and Rhythmic_grouping (hairy)
470 - doc on Rhythmic_grouping
471 - general shaving on Beam and Stem
473 - separate visual from rhythmic info even more
477 - Ledger lines, should be separate item: Ledger_lines, Ledger_lines
478 - set different line sizes / thicknesses
479 - beam stem showthrough, inter beam sizes (french vs german style)
482 - left/right note balls should be handled by Collision:
483 < \multi 2; { \stem 1; <b c> } { <f as b> } >
486 - merge key{item} & localkey{item}?
487 - spacing, national styles?
490 - redo Notehead to allow digits as heads
491 - add a \tablature {} lexer mode for easy entering
493 * should adjust stemlength for flag number.
496 - caching breakpoints
498 - specify number of lines
504 * c4 4 4 4 for c4 c4 c4 c4?
506 * neatly (and readably) expressing concurrent
521 * relative mode for pitch entering
523 * configure pitch_byte
525 * rest name configurable
529 * limit memory usage; the full coriolan takes up too much resources.
531 * fix confusing naming in Engraver vs Engraver_group_engraver (context)
533 * progress when creating MIDI elts.
535 * A range for context errors (eg. mark both { and }. )
537 * lyric in staff (sharpsharp in staff, text below)
541 * write Dynamic_line (to group dynamics horizontally)
543 * use Real for all y positions.
544 - use translate_axis( .. ,Y_AXIS) iso separate variables.
546 * half-sharps, half-flats
548 * adaptive accidental spacing.
550 * handle EOF graciously in error messages.
552 * centered whole rest
554 * declare notenametab?
556 * midi esp.: use I32 iso int where 32 bits are needed (or assumed...)
558 * stafftypes: voice names/ instrument names.
562 * C meter iso 4/4, idem for alla breve, etc.
564 * textspanner: center position
566 * % toe to bheel four to five
572 (where "to" is a tiny bow)
574 * auxilliary file for caching info.
578 * clean solution for staffsize in items.
584 * Output data structures of Mudela in XML/SGML.
586 * create libmudela, or liblily_frontend
588 * move MIDI stuff (including Quantization) to a ANSI C libmidi library.
590 * use an embedded language: Python, Scheme
595 * y -dims in internote? Staff-space? X-dimensions?
597 * Spacing_request for manually adjusting spacing
599 * caching breakpoints
601 * used fixedpoint arithmetic for min. energy.
603 * move towards incremental algorithms.
605 * far fetched language ideas
606 - design meta-language like TeX and Metafont
607 - programming/macros input
609 * versioning stuff (cvt mudela, mudela, etc.)
613 * dynamic loading of engravers?
617 ****************************************
618 Han-Wen Nienhuys <hanwen@cs.uu.nl> writes:
620 > mcmanus@IDT.NET writes:
621 > > > I want different C++ objects (with scheme embedded) to be linked by
622 > > > C++ pointers. I want to access these other objects from the Scheme
623 > > > code, and I want access to these pointers from C++.
625 > > You can do this with a combination of smob's and primitive functions,
626 > > though it may not be be exactly what you wanted. You would have one
627 > > smob for each class in your application, and then you would write a
628 > > primitive function that would return the objects that are linked to a
631 > And the smob and the C++ class are interlinked? Like
634 > Foo_smob *smob_ptr_;
638 > Foo_class *class_ptr_
641 Usually you can get away without having this interlinked structure.
642 One piece of information you need when exporting objects to scheme is
643 the smob tag for your class. You might store this value (a long) into
644 a class static variable, or a file static variable. I'll use a class
645 static variable in this example.
647 I typically use code that works like this (untested code ahead):
650 static long *Foo_smob_tag;
651 SCM obj; // representation as a scheme object, description comes later
654 // call this once on startup
655 void init_Foo_class {
656 static scm_smobfuns type_rec;
658 type_rec.mark = foo_mark;
659 type_rec.free = foo_free;
660 type_rec.print = foo_display;
662 Foo_class::Foo_smob_tag = new int(scm_new_smob(type_rec));
665 When you want to export an object to scheme, you put a pointer to the
666 object itself in the cdr of the cell, and the tag in the car of the
667 cell. The code looks like this:
673 return(SCM_NIMP(obj) && SCM_CAR(obj) == Foo_class::Foo_smob_tag);
676 // given a Scheme representation, return, a C++ representation
680 return((Foo_class*)SCM_CDR(obj));
683 // the SCM representation of the object is stored inside itself
684 // this will become useful when destructor gets called
686 foo_box(Foo_class *foo)
689 SCM_NEWCELL(foo->obj);
690 SCM_SETCAR(foo->obj, Foo_class::Foo_smob_tag);
691 SCM_SETCDR(foo->obj, (SCM)foo);
696 > C++ determines life time, so what is the strategy?
698 What happens now when the destructor gets called? Lets set the cdr to
699 NULL, and then check for that in all of the primitive functions that
700 use your smob. We'll call this notion 'live'; a scheme object is
701 'live' if the C++ representation still exists, it's dead if the C++
702 object is gone. You can still have references to dead objects in
703 scheme code; it's just an error to use them. This idea is stolen from
704 Emacs's handling of buffers ('buffer-live-p' and friends).
706 Add another function, foo_live_p:
711 return(foo_p(obj) && SCM_CDR(obj) != NULL);
714 In you destructor, you need to do:
718 SCM_CDR(this->obj, NULL);
721 When writing new primitives, now just check foo_live_p().
723 I hope the above helps,
729 "Even if you are on the right track, you'll get run over
730 if you just sit there."
731 --Will Rogers (1879-1935)
733 ***************************