#### Hairpin

Hairpin objects are created by: Dynamic_engraver

Standard settings:

`print-function` (procedure):
  `Hairpin::print`

  Function taking grob as argument, returning a `Stencil` object.

`thickness` (number):
  `1.0`

  Bar line thickness, measured in `linethickness`.

`height` (dimension, in staff space):
  `0.6666`

  Height of an object in staffspace.

`spacing-procedure` (procedure):
  `Spanner::set_spacing_rods`

  Procedure for calculating spacing parameters. The routine is called after `before-line-breaking-callback`.

`minimum-length` (dimension, in staff space):
  `2.0`

  Try to make a spanner at least this long. This requires an appropriate routine for the `spacing-procedure` property.

`self-alignment-Y` (number):
  `0`

  like `self-alignment-X` but for Y axis.

`Y-offset-callbacks` (list):
  `'(#<primitive-procedure Self_alignment_interface::aligned_on_self>)`

  see `X-offset-callbacks`.

This object supports the following interfaces: spanner-interface, dynamic-interface, self-alignment-interface, line-interface, hairpin-interface and grob-interface

Read comments on this page, or add one. This page is for LilyPond-2.2.5 (stable-branch).