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 * decimal point in \paper {}
12 > I have changed Mark_engraver to use the G_... classes.
13 > My implementation has the following shortcomings at the
16 > - markScriptPadding is not supported, since G_staff_side_item does not
19 > - markBreakPriority is not supported.
21 > - Mostly, you want the marks aligned with the bar lines. I don't
22 > really understand how to implement that feature.
24 > - You get lots of warnings about missing 'number' and 'Large'
27 *{ \voiceone <a'4.*2/3 d''4.*2/3 fis''4.*2/3> [g''8 fis'' e''] d''4 |}
29 { \voicetwo d'4 d'2.*2/3 } spacing
33 * sharp /flat on trills (in MIDI ??)
35 * scm-ify \property values.
36 - The direction of textual scripts ('^' or '_') is ignored.
37 * move class Lookup {} into scm
41 * update mi2mu for lilypond 1.1
45 * AAARG: Rational::Rational (double x) is broken, try:
46 Rational x = (double)0.25;
47 see 'suck me gently...'
49 * collisions/voices \voiceone \voicetwo are broken; see
50 input/praeludium-fuga-E.ly
51 mutopia/J.S.Bach/wtk1-fugue2.ly
57 * fix: text on rests: rediculous dims
61 * fix fingering 'a-5': font direction broken *again*
65 * ly2dvi barfs on linewidth = -1.
68 - default duration? duration must be not entered
69 explicitely on first note.
71 * turn slope-damping on/off
79 * fix height of / collisions with lyrics (chords),
80 see input/test/vertical-text.ly; input/test/repeat.ly
83 - one volta spanner per score
85 * latex bla.tex broken (titles / \lilyfooter stuff?)
87 * check/set minimum slur/tie length
91 * \breathmark TeX macro
95 * add new glyphs to font.ly
97 * formatting of input stuff.
99 * \notes{ a \< b \cr } vs \notes{ a \< b \! }
101 * if possible, it might be nice for a warning to appear if someone does
102 \translator with no name and without assigning it to an
107 * 'hinterfleisch' before bar (e.g. wtk1-fugue2)?
109 * \type Voice \times 2/3 { [c8 c16 c16 c16 c16] }
111 * fix singleStaffBracket
113 * repeat bars: need distance after ":|" and before "|:"
115 Summary of minor spelling irregularities:
116 - capitalization/use of underscores in property names
118 * fix SkipBars -> skipBars
120 * \shape 1st dim skipped?
122 * fix marks/barnumbers/marginal notes
125 lbheel = \script { "bheel" 0 0 -1 0 0 }
126 rbheel = \script { "bheel" 0 0 1 0 0 }
127 lbtoe = \script { "btoe" 0 0 -1 0 0 }
128 rbtoe = \script { "btoe" 0 0 1 0 0 }
129 lfheel = \script { "fheel" 0 0 -1 0 0 }
130 rfheel = \script { "fheel" 0 0 1 0 0 }
131 lftoe = \script { "ftoe" 0 0 -1 0 0 }
132 rftoe = \script { "ftoe" 0 0 1 0 0 }
136 portato= \script { "portato" 0 -1 0 1 0 }
139 * uniformise recent feta contributions.
141 * check out legal/(c) matters for scores.
143 * check out GCC signatures?
145 * Align_element::padding ?
147 * uniformise property names.
149 * ydirection <-> yDirection
151 * typo checks on property names?
153 * use streambufs and iostream
154 to provide IO handling for TeX stream, mudela stream, data-file.
156 * seriously buffer TeX output (do profile of writing .5 mb TeX file.)
158 * strip EXEs before installing
160 * zip target for binary windows dist (JBR)
162 * junking \skip req in lyrics
165 - \type -> \context ?
169 - mix engraver hacking with music ?
170 - \once\property KEY = VAL
171 - \addtranslator, \removetranslator
172 - junk ^ and _ for scripts
176 * percussion note heads
178 * mi2mu empty staffs.
180 * midi_instrument -> midiInstrument
182 * horizontal centering of dynamics
184 * \font\fontA=feta20.afm (.afm?)
188 * stable make/config stuff
190 * $DEPENDENCIES_OUTPUT support
192 * fix weird behaviour when .AFMs/.SCMs not found.
194 * Xdvi zooming ?! Try to understand GS garbage collection.
195 gs: Error: /undefined in draw_beam
198 * fix vertical alignment and stafflines
200 * GrandStaff needs more work -- I want a single word
201 `harpsichord' to the left of the grandstaff, not one on each
202 stave. (Organ staff -- with separate pedal -- but common
203 properties may be something to think about. Of course for
204 organ you want to be able to give stop indications on the way
205 through, so the \property Voice.Instrument would be a stop,
206 and \property GrandStaff.instrument would be PipeOrgan...)
208 * revise the Score_priority_align_engraver concept. It sucks.
210 * make new VoiceOne, VoiceTwo, VoiceThree contexts with
211 ydirection and hshift preset
213 * *.yo: fix pod manpage layout legacy
215 * text-items clash with stems/beams
217 * --include, -I option for ly2dvi (pass on to lily)
219 * fix placement of beam-less abbrev
222 <{\voiceone cis4. cis8 cis4 | cis4 cis cis | r1 }
223 {\voicetwo cis,4 r r | r2. | r1 }> |
226 * try to use template<Type> iso MACRO(Type)
228 - NEWS: ... Musical_pitch (analogous to Duration and Rhythmic_req)
229 think about, analogous to pitch:
230 * { a4 a16 } c <-- duration of c?
231 * <a4 b8> c <-- duration of c?
235 * fix audio-items (don't use (input) requests, but copy data)
237 * make sure all ex's have a mudela-version
239 * do rest-collisions for Multi_measure_rests as well.
241 * split error/warning in error/warning/non_fatal_error
243 * add a Duration_convert member to Duration_iter to set parameters.
244 Junk global duration settings.
248 * minimum length second part broken tie
250 * en-,discouraged linebreaking:
251 - handle DISALLOW < penalty > FORCE
252 - discourage breaking of slurs
254 * fix variable define/lookup parser global<->paper
256 * fix title/instrument placements; see input/test/title.ly
258 * <\voiceone c4. \voicetwo c4>
260 * add full cello suites to web site (kom op, Maarten!)
262 * Rethink Time_description
263 * \cadenza , \meter, \grouping should all be \properties
268 - abbreviation-beam -> (measured/unmeasured) tremolo
269 - partial -> anacrouse
273 * robustify Beam (in case of no stems, 32nd notes)
275 * decentralised spring factory
277 * move paper vars into engraver properties
279 * check for groff / troff/ nroff et
281 * more intelligent file searching
282 - make LilyPond RPM fully relocatable
285 - break-up heavily-nested score blocks
287 * disable spaces in TeX stuff
289 * handle ^C for tmp/file creation.
292 * dots & rest collisions.
300 * versioning for Feta
302 * the warning about the negative slur/tie length appears twice
305 * The `3' in the meter key is a one or two pixels too thin (at 600dpi)
308 * the bracket is ugly (wings are too parabolic, should be more circular)
310 * better hshift (dots, distance, head dependent)
312 * clefs (AG): The "8" should appear closer to the actual clef,
315 * put errorlevel in Input class
319 * integrate midi-elts from mi2mu and lily?
322 FMR: Free memory read:
323 * This is occurring while in:
324 Bar_column::do_substitute_dependency(Score_element*,Score_element*) [bar
326 Score_element::unlink() [score-elem.cc:383]
327 Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
329 Paper_score::calc_breaking() [p-score.cc:189]
330 Paper_score::process() [p-score.cc:203]
331 Score::run_translator(Music_output_def*) [score.cc:117]
332 * Reading 4 bytes from 0x65d3a0 in the heap.
333 * Address 0x65d3a0 is 160 bytes into a freed block at 0x65d300 of 208 bytes.
334 * This block was allocated from:
336 __builtin_new [libgcc.a]
337 Span_score_bar::clone()const [span-score-bar.hh:20]
338 Item::copy_breakable_items() [item.cc:69]
339 Item::do_breakable_col_processing() [item.cc:89]
340 Score_element::calcalute_dependencies(int,int,void(Score_element::*)()*)
342 * There have been 22 frees since this block was freed from:
344 __builtin_delete [libgcc.a]
345 Span_score_bar::~Span_score_bar() [span-score-bar.hh:18]
346 Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
348 Paper_score::calc_breaking() [p-score.cc:189]
349 Paper_score::process() [p-score.cc:203]
350 Postprocessing elements...
351 TeX output to score-bar-scripts.tex...
356 * make GCC warn about ctor that leaves member vars uninitialised.
358 * redhat (v?) graphical install bomb-out?
360 * GNU diff 2.7: diff -rN does not see a new directory with empty file
362 * GNU patch 2.1: <must find simple example> if patch chokes on a
363 hunk, or on allegedly unsorted hunks in a diff, it may stop
364 without a trace of failure (create .rej file, print error or
365 dump core) and just ignore any further diffs.
369 f = fopen ("/dev/null", "r")
374 * GNU indent: handle C++
377 - 'double-fix' mode: ignore identical fix, rather than suggest
378 to revert patch direction when (more or less? exactly) the same
384 - fix position of bar number
385 - stack scripts in chords:
386 % fingering: footing:
387 < a-4 c-2 g-1 > < c-\ltoe e-\lheel >
389 - slur parts as a script
390 - stack parameterised scripts for fingering and footing:
393 - automatically add a \version if not present.
396 - convert-mudela -e empty.ly
399 - should handle block comments too.
400 - handle lexer modes (\header, \melodic, \lyric) etc.
403 - fontlock: \melodic \melodic
405 * use properties for:
410 - bartypes (get rid of derived Span_bar_engravers)
415 - optimal pagebreaking.
417 * Unicode support? -> man 7 unicode
420 - detect of 16/8 bit files
421 - examples to go with it.
424 - write a faster Spring_spacer (without matrices if possible)
425 - relate energybound to linelen unitspace fontsize etc.
426 - used fixed point fp?
429 - output header info to MIDI too.
431 * a musical dictionary. See Documentation/vocabulary-*, other
441 - guitar chords (fret diagrams)
442 - other chord name styles (american(?) style)
447 - derive lily_stream, Dstream, texstream from ostream?
448 - indentable stream as baseclass for TeX stream, lily stream, Dstream.
449 - use dstream feature in mi2mu
450 - integrate IO checking into stream class
457 * add to MIDI output:
459 - ornaments (and trills?)
464 - account for rhythmic position in measure
468 - make separate class for Grace_*_engravers
469 (which is at Voice_gravs level)
470 - make encapsulated spacing problems.
472 * accidentals per Voice_group
474 * Output class, handles : (smallish)
475 - help text /(c) notice?
477 - warning /errors/progress
478 - abort on error/warning; exit status
479 - quiet/ignore-version options
484 * elaborate Staff_side baseclass:
491 - PS lines to .eps files
492 - write custom prolog
495 * Output an output format independent (ofi) typeset file; and
496 make ofi2 TeX, MusiXTex, Display PostScript, PostScript,
497 Ascii... interpreters. (difficult)
500 - Common Music Notation
501 - PostScript output (esp. Beams, Slurs, etc)
502 - Move all Score_elems, into libmutype.a
506 - Doc (C) stuff of sheet music
507 - a better format? SGML? TeX? Info?
510 * more spanners (smallish)
514 * Rewrite Stem, Beam and Rhythmic_grouping (hairy)
516 - doc on Rhythmic_grouping
517 - general shaving on Beam and Stem
519 - separate visual from rhythmic info even more
523 - Ledger lines, should be separate item: Ledger_lines, Ledger_lines
524 - set different line sizes / thicknesses
525 - beam stem showthrough, inter beam sizes (french vs german style)
528 - left/right note balls should be handled by Collision:
529 < \multi 2; { \stem 1; <b c> } { <f as b> } >
532 - merge key{item} & localkey{item}?
533 - spacing, national styles?
536 - redo Notehead to allow digits as heads
537 - add a \tablature {} lexer mode for easy entering
539 * should adjust stemlength for flag number.
542 - caching breakpoints
544 - specify number of lines
550 * c4 4 4 4 for c4 c4 c4 c4?
552 * neatly (and readably) expressing concurrent
567 * relative mode for pitch entering
569 * configure pitch_byte
571 * rest name configurable
575 * limit memory usage; the full coriolan takes up too much resources.
577 * fix confusing naming in Engraver vs Engraver_group_engraver (context)
579 * progress when creating MIDI elts.
581 * A range for context errors (eg. mark both { and }. )
583 * lyric in staff (sharpsharp in staff, text below)
587 * write Dynamic_line (to group dynamics horizontally)
589 * use Real for all y positions.
590 - use translate_axis( .. ,Y_AXIS) iso separate variables.
592 * half-sharps, half-flats
594 * adaptive accidental spacing.
596 * handle EOF graciously in error messages.
598 * declare notenametab?
600 * midi esp.: use I32 iso int where 32 bits are needed (or assumed...)
602 * stafftypes: voice names/ instrument names.
606 * C meter iso 4/4, idem for alla breve, etc.
608 * textspanner: center position
610 * % toe to bheel four to five
616 (where "to" is a tiny bow)
618 * auxilliary file for caching info.
622 * clean solution for staffsize in items.
628 * Output data structures of Mudela in XML/SGML.
630 * create libmudela, or liblily_frontend
632 * move MIDI stuff (including Quantization) to a ANSI C libmidi library.
634 * use an embedded language: Python, Scheme
639 * y -dims in internote? Staff-space? X-dimensions?
641 * Spacing_request for manually adjusting spacing
643 * caching breakpoints
645 * used fixedpoint arithmetic for min. energy.
647 * move towards incremental algorithms.
649 * far fetched language ideas
650 - design meta-language like TeX and Metafont
651 - programming/macros input
653 * versioning stuff (cvt mudela, mudela, etc.)
657 * dynamic loading of engravers?
661 ****************************************
662 Han-Wen Nienhuys <hanwen@cs.uu.nl> writes:
664 > mcmanus@IDT.NET writes:
665 > > > I want different C++ objects (with scheme embedded) to be linked by
666 > > > C++ pointers. I want to access these other objects from the Scheme
667 > > > code, and I want access to these pointers from C++.
669 > > You can do this with a combination of smob's and primitive functions,
670 > > though it may not be be exactly what you wanted. You would have one
671 > > smob for each class in your application, and then you would write a
672 > > primitive function that would return the objects that are linked to a
675 > And the smob and the C++ class are interlinked? Like
678 > Foo_smob *smob_ptr_;
682 > Foo_class *class_ptr_
685 Usually you can get away without having this interlinked structure.
686 One piece of information you need when exporting objects to scheme is
687 the smob tag for your class. You might store this value (a long) into
688 a class static variable, or a file static variable. I'll use a class
689 static variable in this example.
691 I typically use code that works like this (untested code ahead):
694 static long *Foo_smob_tag;
695 SCM obj; // representation as a scheme object, description comes later
698 // call this once on startup
699 void init_Foo_class {
700 static scm_smobfuns type_rec;
702 type_rec.mark = foo_mark;
703 type_rec.free = foo_free;
704 type_rec.print = foo_display;
706 Foo_class::Foo_smob_tag = new int(scm_new_smob(type_rec));
709 When you want to export an object to scheme, you put a pointer to the
710 object itself in the cdr of the cell, and the tag in the car of the
711 cell. The code looks like this:
717 return(SCM_NIMP(obj) && SCM_CAR(obj) == Foo_class::Foo_smob_tag);
720 // given a Scheme representation, return, a C++ representation
724 return((Foo_class*)SCM_CDR(obj));
727 // the SCM representation of the object is stored inside itself
728 // this will become useful when destructor gets called
730 foo_box(Foo_class *foo)
733 SCM_NEWCELL(foo->obj);
734 SCM_SETCAR(foo->obj, Foo_class::Foo_smob_tag);
735 SCM_SETCDR(foo->obj, (SCM)foo);
740 > C++ determines life time, so what is the strategy?
742 What happens now when the destructor gets called? Lets set the cdr to
743 NULL, and then check for that in all of the primitive functions that
744 use your smob. We'll call this notion 'live'; a scheme object is
745 'live' if the C++ representation still exists, it's dead if the C++
746 object is gone. You can still have references to dead objects in
747 scheme code; it's just an error to use them. This idea is stolen from
748 Emacs's handling of buffers ('buffer-live-p' and friends).
750 Add another function, foo_live_p:
755 return(foo_p(obj) && SCM_CDR(obj) != NULL);
758 In you destructor, you need to do:
762 SCM_CDR(this->obj, NULL);
765 When writing new primitives, now just check foo_live_p().
767 I hope the above helps,
773 "Even if you are on the right track, you'll get run over
774 if you just sit there."
775 --Will Rogers (1879-1935)
777 ***************************