public BarRendererBase(Bar bar)
{
Bar = bar;
IsEmpty = true;
_preBeatGlyphs = new LeftToRightLayoutingGlyphGroup();
_preBeatGlyphs.Renderer = this;
_voiceContainers = new FastDictionary<int, VoiceContainerGlyph>();
_postBeatGlyphs = new LeftToRightLayoutingGlyphGroup();
_postBeatGlyphs.Renderer = this;
}