From bdcb44a4d6db211473c4d246d5a6150935a0507c Mon Sep 17 00:00:00 2001 From: Michael Scott Cuthbert Date: Mon, 11 Nov 2013 16:15:43 -0500 Subject: [PATCH] added first direct vexflow Exporter using m21j -- very alpha --- music21/vexflow/exporter.py | 121 ++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) create mode 100644 music21/vexflow/exporter.py diff --git a/music21/vexflow/exporter.py b/music21/vexflow/exporter.py new file mode 100644 index 0000000000..cfe6f33aa2 --- /dev/null +++ b/music21/vexflow/exporter.py @@ -0,0 +1,121 @@ +import json + +template = r''' + + + Music21 Fragment + + + + + + + + + + +
+
+ + +''' + +loadFunction = r''' + //var score = Music21.parseJSON(dataAssignment); + var jsonObj = JSON.parse(dataAssignment); + s = new Music21.Score(); + s.tempo = 60; + s.timeSignature = '3/4'; + for (var i = 0; i < jsonObj['__attr__']['_elements'].length; i++) { + var jsonPart = jsonObj['__attr__']['_elements'][i]; + if (jsonPart['__class__'] != 'music21.stream.Part') { + continue; + } + + + var part = new Music21.Part(); + if (i < 2) { + part.clef = new Music21.Clef('treble'); + } else { + part.clef = new Music21.Clef('bass'); + } + //console.log('got part'); + for (var m = 0; m < jsonPart['__attr__']['_elements'].length; m++) { + //console.log('got measure'); + var jsonMeasure = jsonPart['__attr__']['_elements'][m]; + if (jsonMeasure['__class__'] != 'music21.stream.Measure') { + continue; + } + + + var measure = new Music21.Measure(); + for (var nI = 0; nI < jsonMeasure['__attr__']['_elements'].length; nI++) { + var noteObj = jsonMeasure['__attr__']['_elements'][nI]; + if (noteObj['__class__'] != 'music21.note.Note') { + continue; + } + var n = new Music21.Note(); + //console.log(noteObj); + var pitchObj = noteObj['__attr__']['pitch']; + n.pitch.step = pitchObj['__attr__']['_step']; + n.pitch.octave = pitchObj['__attr__']['_octave']; + var durationObj = noteObj['__attr__']['_duration']; + n.duration.quarterLength = durationObj['__attr__']['_qtrLength']; + measure.append(n); + } + part.append(measure) + } + s.append(part); + } + s.appendNewCanvas(); +''' + +def getFormat(score): + from music21 import freezeThaw + sf = freezeThaw.JSONFreezer(score) + frozen = json.dumps( + sf.getJSONDict(includeVersion=True), + sort_keys=True, + ); + return "var dataAssignment = '" + frozen + "'" + +def fillTemplate(score): + dataAssignment = getFormat(score) + return template % (dataAssignment, loadFunction) + +if __name__ == '__main__': + from music21 import corpus, converter, note, base, volume, duration, stream, environment + p = converter.parse('tinynotation: 3/4 c4 d4 e4 f4 g4 a4').makeMeasures() + s = stream.Score() + s.insert(0, p) + p2 = converter.parse('tinynotation: 3/4 A4 B4 c d e f').makeMeasures() + s.insert(0, p2) + s = corpus.parse('bwv66.6') + + n = note.Note() + #s = stream.Stream() + + b = base.Music21Object() + v = volume.Volume() + d = duration.Duration() + dataStr = fillTemplate(s) + + environLocal = environment.Environment() + ext = '.html' + fp = environLocal.getTempFile(ext) + + f = open(fp, 'w') + f.write(dataStr) + f.close() + environLocal.launch(ext, fp) + +#### +# eof