Hi, Urs! On Tue, Jan 17, 2017 at 8:26 AM, Malte Meyn <lilyp...@maltemeyn.de> wrote:
> > > Am 17.01.2017 um 11:43 schrieb Urs Liska: > > I don't find the appropriate property to modify the distance between > > secondary stems. Attached you'll find the result of \override > > Beam.beam-thickness = 0.15, and I need to adjust the beams to be closer > > together, e.g. to 0.5 staff spaces. I don't see any promising properties > > in Beam and Beam Interface. > > It’s Beam.gap or Beam.beam-gap or something similar. > I'm not sure why the calculation for this is so convoluted. Perhaps studying the source code more would enlighten me. Anyways, the property you are looking for is 'length-fraction. The relation to beam spacing depends on the number of beams, as described in the function get_beam_translation, line 114 of lily/beam.cc. The basic equation goes like this: if beam_count < 4: beam_dy = (2 * staff_space * fract + line * fract - beam_thickness) / 2.0 else: beam_dy = (3 * staff_space * fract + line * fract - beam_thickness) / 3.0 As a reference, this means that the beam gap, IIUC, for a beam-thickness of 0.48 (the default) and length-fraction of 1.0, is about 1/3 of a staff-space for beam-count<4 (but I haven't taken any actual measurements to confirm this). HTH, Abraham
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