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
9 > I have changed Mark_engraver to use the G_... classes.
10 > My implementation has the following shortcomings at the
13 > - markScriptPadding is not supported, since G_staff_side_item does not
16 > - markBreakPriority is not supported.
18 > - Mostly, you want the marks aligned with the bar lines. I don't
19 > really understand how to implement that feature.
21 > - You get lots of warnings about missing 'number' and 'Large'
24 * scm-ify \property values.
25 - The direction of textual scripts ('^' or '_') is ignored.
26 * move class Lookup {} into scm
30 * update mi2mu for lilypond 1.1
42 * ly2dvi barfs on linewidth = -1.
52 * fix height of / collisions with lyrics (chords),
53 see input/test/vertical-text.ly
56 - one volta spanner per score
57 - repeat bars span staffs
58 - placement alternative number
60 * latex bla.tex broken (titles / \lilyfooter stuff?)
62 * check/set minimum slur/tie length
66 * \breathmark TeX macro
70 * add new glyphs to font.ly
72 * formatting of input stuff.
74 * \notes{ a \< b \cr } vs \notes{ a \< b \! }
76 * if possible, it might be nice for a warning to appear if someone does
77 \translator with no name and without assigning it to an
82 * 'hinterfleisch' before bar (e.g. wtk1-fugue2)?
84 * \type Voice \times 2/3 { [c8 c16 c16 c16 c16] }
86 * fix singleStaffBracket
88 * repeat bars: need distance after ":|" and before "|:"
90 Summary of minor spelling irregularities:
91 - capitalization/use of underscores in property names
93 * fix SkipBars -> skipBars
95 * \shape 1st dim skipped?
97 * fix marks/barnumbers/marginal notes
100 lbheel = \script { "bheel" 0 0 -1 0 0 }
101 rbheel = \script { "bheel" 0 0 1 0 0 }
102 lbtoe = \script { "btoe" 0 0 -1 0 0 }
103 rbtoe = \script { "btoe" 0 0 1 0 0 }
104 lfheel = \script { "fheel" 0 0 -1 0 0 }
105 rfheel = \script { "fheel" 0 0 1 0 0 }
106 lftoe = \script { "ftoe" 0 0 -1 0 0 }
107 rftoe = \script { "ftoe" 0 0 1 0 0 }
111 portato= \script { "portato" 0 -1 0 1 0 }
114 * uniformise recent feta contributions.
116 * check out legal/(c) matters for scores.
118 * check out GCC signatures?
120 * Align_element::padding ?
122 * uniformise property names.
124 * ydirection <-> yDirection
126 * typo checks on property names?
128 * use streambufs and iostream
129 to provide IO handling for TeX stream, mudela stream, data-file.
131 * seriously buffer TeX output (do profile of writing .5 mb TeX file.)
133 * strip EXEs before installing
135 * zip target for binary windows dist (JBR)
137 * junking \skip req in lyrics
140 - \type -> \context ?
144 - mix engraver hacking with music ?
145 - \once\property KEY = VAL
146 - \addtranslator, \removetranslator
147 - junk ^ and _ for scripts
151 * percussion note heads
153 * mi2mu empty staffs.
155 * midi_instrument -> midiInstrument
157 * horizontal centering of dynamics
159 * \font\fontA=feta20.afm (.afm?)
163 * stable make/config stuff
165 * $DEPENDENCIES_OUTPUT support
167 * fix weird behaviour when .AFMs/.SCMs not found.
169 * Xdvi zooming ?! Try to understand GS garbage collection.
170 gs: Error: /undefined in draw_beam
173 * fix vertical alignment and stafflines
175 * GrandStaff needs more work -- I want a single word
176 `harpsichord' to the left of the grandstaff, not one on each
177 stave. (Organ staff -- with separate pedal -- but common
178 properties may be something to think about. Of course for
179 organ you want to be able to give stop indications on the way
180 through, so the \property Voice.Instrument would be a stop,
181 and \property GrandStaff.instrument would be PipeOrgan...)
183 * revise the Score_priority_align_engraver concept. It sucks.
185 * make new VoiceOne, VoiceTwo, VoiceThree contexts with
186 ydirection and hshift preset
188 * *.yo: fix pod manpage layout legacy
190 * text-items clash with stems/beams
192 * --include, -I option for ly2dvi (pass on to lily)
194 * fix placement of beam-less abbrev
197 <{\voiceone cis4. cis8 cis4 | cis4 cis cis | r1 }
198 {\voicetwo cis,4 r r | r2. | r1 }> |
201 * try to use template<Type> iso MACRO(Type)
203 - NEWS: ... Musical_pitch (analogous to Duration and Rhythmic_req)
204 think about, analogous to pitch:
205 * { a4 a16 } c <-- duration of c?
206 * <a4 b8> c <-- duration of c?
210 * fix audio-items (don't use (input) requests, but copy data)
212 * make sure all ex's have a mudela-version
214 * do rest-collisions for Multi_measure_rests as well.
216 * split error/warning in error/warning/non_fatal_error
218 * add a Duration_convert member to Duration_iter to set parameters.
219 Junk global duration settings.
223 * minimum length second part broken tie
225 * en-,discouraged linebreaking:
226 - handle DISALLOW < penalty > FORCE
227 - discourage breaking of slurs
232 * fix variable define/lookup parser global<->paper
234 * fix title/instrument placements; see input/test/title.ly
236 * <\voiceone c4. \voicetwo c4>
238 * add full cello suites to web site (kom op, Maarten!)
240 * Rethink Time_description
241 * \cadenza , \meter, \grouping should all be \properties
246 - abbreviation-beam -> (measured/unmeasured) tremolo
247 - partial -> anacrouse
251 * robustify Beam (in case of no stems, 32nd notes)
253 * decentralised spring factory
255 * move paper vars into engraver properties
257 * check for groff / troff/ nroff et
259 * more intelligent file searching
260 - make LilyPond RPM fully relocatable
263 - break-up heavily-nested score blocks
265 * disable spaces in TeX stuff
267 * handle ^C for tmp/file creation.
270 * dots & rest collisions.
278 * versioning for Feta
280 * the warning about the negative slur/tie length appears twice
283 * The `3' in the meter key is a one or two pixels too thin (at 600dpi)
286 * the bracket is ugly (wings are too parabolic, should be more circular)
288 * better hshift (dots, distance, head dependent)
290 * clefs (AG): The "8" should appear closer to the actual clef,
293 * put errorlevel in Input class
297 * integrate midi-elts from mi2mu and lily?
300 FMR: Free memory read:
301 * This is occurring while in:
302 Bar_column::do_substitute_dependency(Score_element*,Score_element*) [bar
304 Score_element::unlink() [score-elem.cc:383]
305 Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
307 Paper_score::calc_breaking() [p-score.cc:189]
308 Paper_score::process() [p-score.cc:203]
309 Score::run_translator(Music_output_def*) [score.cc:117]
310 * Reading 4 bytes from 0x65d3a0 in the heap.
311 * Address 0x65d3a0 is 160 bytes into a freed block at 0x65d300 of 208 bytes.
312 * This block was allocated from:
314 __builtin_new [libgcc.a]
315 Span_score_bar::clone()const [span-score-bar.hh:20]
316 Item::copy_breakable_items() [item.cc:69]
317 Item::do_breakable_col_processing() [item.cc:89]
318 Score_element::calcalute_dependencies(int,int,void(Score_element::*)()*)
320 * There have been 22 frees since this block was freed from:
322 __builtin_delete [libgcc.a]
323 Span_score_bar::~Span_score_bar() [span-score-bar.hh:18]
324 Paper_score::set_breaking(const Array<Column_x_positions>&) [p-score.cc:
326 Paper_score::calc_breaking() [p-score.cc:189]
327 Paper_score::process() [p-score.cc:203]
328 Postprocessing elements...
329 TeX output to score-bar-scripts.tex...
334 * make GCC warn about ctor that leaves member vars uninitialised.
336 * redhat (v?) graphical install bomb-out?
338 * GNU diff 2.7: diff -rN does not see a new directory with empty file
340 * GNU patch 2.1: <must find simple example> if patch chokes on a
341 hunk, or on allegedly unsorted hunks in a diff, it may stop
342 without a trace of failure (create .rej file, print error or
343 dump core) and just ignore any further diffs.
347 f = fopen ("/dev/null", "r")
352 * GNU indent: handle C++
355 - 'double-fix' mode: ignore identical fix, rather than suggest
356 to revert patch direction when (more or less? exactly) the same
362 - fix position of bar number
363 - stack scripts in chords:
364 % fingering: footing:
365 < a-4 c-2 g-1 > < c-\ltoe e-\lheel >
367 - slur parts as a script
368 - stack parameterised scripts for fingering and footing:
371 - automatically add a \version if not present.
374 - convert-mudela -e empty.ly
377 - should handle block comments too.
378 - handle lexer modes (\header, \melodic, \lyric) etc.
381 - fontlock: \melodic \melodic
383 * use properties for:
388 - bartypes (get rid of derived Span_bar_engravers)
393 - optimal pagebreaking.
395 * Unicode support? -> man 7 unicode
398 - detect of 16/8 bit files
399 - examples to go with it.
402 - write a faster Spring_spacer (without matrices if possible)
403 - relate energybound to linelen unitspace fontsize etc.
404 - used fixed point fp?
407 - output header info to MIDI too.
409 * a musical dictionary. See Documentation/vocabulary-*, other
419 - guitar chords (fret diagrams)
420 - other chord name styles (american(?) style)
425 - derive lily_stream, Dstream, texstream from ostream?
426 - indentable stream as baseclass for TeX stream, lily stream, Dstream.
427 - use dstream feature in mi2mu
428 - integrate IO checking into stream class
435 * add to MIDI output:
437 - ornaments (and trills?)
442 - account for rhythmic position in measure
446 - make separate class for Grace_*_engravers
447 (which is at Voice_gravs level)
448 - make encapsulated spacing problems.
450 * accidentals per Voice_group
452 * Output class, handles : (smallish)
453 - help text /(c) notice?
455 - warning /errors/progress
456 - abort on error/warning; exit status
457 - quiet/ignore-version options
462 * elaborate Staff_side baseclass:
469 - PS lines to .eps files
470 - write custom prolog
473 * Output an output format independent (ofi) typeset file; and
474 make ofi2 TeX, MusiXTex, Display PostScript, PostScript,
475 Ascii... interpreters. (difficult)
478 - Common Music Notation
479 - PostScript output (esp. Beams, Slurs, etc)
480 - Move all Score_elems, into libmutype.a
484 - Doc (C) stuff of sheet music
485 - a better format? SGML? TeX? Info?
488 * more spanners (smallish)
492 * Rewrite Stem, Beam and Rhythmic_grouping (hairy)
494 - doc on Rhythmic_grouping
495 - general shaving on Beam and Stem
497 - separate visual from rhythmic info even more
501 - Ledger lines, should be separate item: Ledger_lines, Ledger_lines
502 - set different line sizes / thicknesses
503 - beam stem showthrough, inter beam sizes (french vs german style)
506 - left/right note balls should be handled by Collision:
507 < \multi 2; { \stem 1; <b c> } { <f as b> } >
510 - merge key{item} & localkey{item}?
511 - spacing, national styles?
514 - redo Notehead to allow digits as heads
515 - add a \tablature {} lexer mode for easy entering
517 * should adjust stemlength for flag number.
520 - caching breakpoints
522 - specify number of lines
528 * c4 4 4 4 for c4 c4 c4 c4?
530 * neatly (and readably) expressing concurrent
545 * relative mode for pitch entering
547 * configure pitch_byte
549 * rest name configurable
553 * limit memory usage; the full coriolan takes up too much resources.
555 * fix confusing naming in Engraver vs Engraver_group_engraver (context)
557 * progress when creating MIDI elts.
559 * A range for context errors (eg. mark both { and }. )
561 * lyric in staff (sharpsharp in staff, text below)
565 * write Dynamic_line (to group dynamics horizontally)
567 * use Real for all y positions.
568 - use translate_axis( .. ,Y_AXIS) iso separate variables.
570 * half-sharps, half-flats
572 * adaptive accidental spacing.
574 * handle EOF graciously in error messages.
576 * centered whole rest
578 * declare notenametab?
580 * midi esp.: use I32 iso int where 32 bits are needed (or assumed...)
582 * stafftypes: voice names/ instrument names.
586 * C meter iso 4/4, idem for alla breve, etc.
588 * textspanner: center position
590 * % toe to bheel four to five
596 (where "to" is a tiny bow)
598 * auxilliary file for caching info.
602 * clean solution for staffsize in items.
608 * Output data structures of Mudela in XML/SGML.
610 * create libmudela, or liblily_frontend
612 * move MIDI stuff (including Quantization) to a ANSI C libmidi library.
614 * use an embedded language: Python, Scheme
619 * y -dims in internote? Staff-space? X-dimensions?
621 * Spacing_request for manually adjusting spacing
623 * caching breakpoints
625 * used fixedpoint arithmetic for min. energy.
627 * move towards incremental algorithms.
629 * far fetched language ideas
630 - design meta-language like TeX and Metafont
631 - programming/macros input
633 * versioning stuff (cvt mudela, mudela, etc.)
637 * dynamic loading of engravers?
641 ****************************************
642 Han-Wen Nienhuys <hanwen@cs.uu.nl> writes:
644 > mcmanus@IDT.NET writes:
645 > > > I want different C++ objects (with scheme embedded) to be linked by
646 > > > C++ pointers. I want to access these other objects from the Scheme
647 > > > code, and I want access to these pointers from C++.
649 > > You can do this with a combination of smob's and primitive functions,
650 > > though it may not be be exactly what you wanted. You would have one
651 > > smob for each class in your application, and then you would write a
652 > > primitive function that would return the objects that are linked to a
655 > And the smob and the C++ class are interlinked? Like
658 > Foo_smob *smob_ptr_;
662 > Foo_class *class_ptr_
665 Usually you can get away without having this interlinked structure.
666 One piece of information you need when exporting objects to scheme is
667 the smob tag for your class. You might store this value (a long) into
668 a class static variable, or a file static variable. I'll use a class
669 static variable in this example.
671 I typically use code that works like this (untested code ahead):
674 static long *Foo_smob_tag;
675 SCM obj; // representation as a scheme object, description comes later
678 // call this once on startup
679 void init_Foo_class {
680 static scm_smobfuns type_rec;
682 type_rec.mark = foo_mark;
683 type_rec.free = foo_free;
684 type_rec.print = foo_display;
686 Foo_class::Foo_smob_tag = new int(scm_new_smob(type_rec));
689 When you want to export an object to scheme, you put a pointer to the
690 object itself in the cdr of the cell, and the tag in the car of the
691 cell. The code looks like this:
697 return(SCM_NIMP(obj) && SCM_CAR(obj) == Foo_class::Foo_smob_tag);
700 // given a Scheme representation, return, a C++ representation
704 return((Foo_class*)SCM_CDR(obj));
707 // the SCM representation of the object is stored inside itself
708 // this will become useful when destructor gets called
710 foo_box(Foo_class *foo)
713 SCM_NEWCELL(foo->obj);
714 SCM_SETCAR(foo->obj, Foo_class::Foo_smob_tag);
715 SCM_SETCDR(foo->obj, (SCM)foo);
720 > C++ determines life time, so what is the strategy?
722 What happens now when the destructor gets called? Lets set the cdr to
723 NULL, and then check for that in all of the primitive functions that
724 use your smob. We'll call this notion 'live'; a scheme object is
725 'live' if the C++ representation still exists, it's dead if the C++
726 object is gone. You can still have references to dead objects in
727 scheme code; it's just an error to use them. This idea is stolen from
728 Emacs's handling of buffers ('buffer-live-p' and friends).
730 Add another function, foo_live_p:
735 return(foo_p(obj) && SCM_CDR(obj) != NULL);
738 In you destructor, you need to do:
742 SCM_CDR(this->obj, NULL);
745 When writing new primitives, now just check foo_live_p().
747 I hope the above helps,
753 "Even if you are on the right track, you'll get run over
754 if you just sit there."
755 --Will Rogers (1879-1935)
757 ***************************