Issues with extraneous <forward> element.

[p-groarke]

While building some measures with 2 staves (treble & bass), 2 voices, I get an extraneous <forward> element at the beginning of the second measure. The export doesn't seem to know the "playhead" is already at the correct position.

I'm curious if there is something to watch out for when dealing with multiple staves/voices?

Snippets of the generating code based on your example, writing a test scale.

Adding notes to measures.

	int current_time = 0;
	for (const mx::NoteData& n : scale) {
		ret.back().staves[0].voices[treb_voice_id].notes.push_back(n);
		mx::NoteData bass_n = n;
		bass_n.pitchData.octave -= 1;
		ret.back().staves[1].voices[bass_voice_id].notes.push_back(bass_n);

		current_time += n.durationData.durationTimeTicks;

		if (current_time >= ret.back().timeSignature.beats
						* ret.back().timeSignature.beatType) {
			ret.push_back(build_measure());
			current_time = 0;
		}
	}

How the measure is built.

mx::MeasureData build_measure(bool first = false) {
	mx::MeasureData ret;
	mx::StaffData staff_treb;
	mx::StaffData staff_bass;

	ret.timeSignature.beats = qticks;
	ret.timeSignature.beatType = qticks;

	if (first) {
		ret.timeSignature.isImplicit = false;

		// set the clef
		mx::ClefData clef_treb;
		clef_treb.setTreble();
		staff_treb.clefs.push_back(clef_treb);

		mx::ClefData clef_bass;
		clef_bass.setBass();
		staff_bass.clefs.push_back(clef_bass);

		mx::KeyData key;
		key.fifths = 4; //test
		ret.keys.push_back(key);
	}


	// add a voice
	mx::VoiceData voice_treb;
	mx::VoiceData voice_bass;

	staff_treb.voices[treb_voice_id] = voice_treb;
	staff_bass.voices[bass_voice_id] = voice_bass;

	// add a staff
	ret.staves.push_back(staff_treb);
	ret.staves.push_back(staff_bass);

	return ret;
}

[p-groarke]

Ah I got it. The NoteData.tickTimePosition is relative to the beginning of the measure, and such must be reset to 0 every measure.

[webern]

Will re-open and add some comments to the code for clarification.

[p-groarke]

Nice good idea 👍

[webern]

now on the develop branch