= hed->extent (hed, X_AXIS).linear_combination (CENTER)
- heads[i]->extent (heads[i], X_AXIS).linear_combination (CENTER);
- heads[i]->translate_axis (amount, X_AXIS);
+ if (!isnan (amount)) // empty heads can produce NaN
+ heads[i]->translate_axis (amount, X_AXIS);
}
bool parity = true;
Real lastpos = Real (Staff_symbol_referencer::get_position (heads[0]));
Stem::internal_height (Grob *me, bool calc_beam)
{
Grob *beam = get_beam (me);
- if (!is_valid_stem (me) && ! beam)
+ if (!is_valid_stem (me) && !beam)
return Interval ();
Direction dir = get_grob_direction (me);
(void) beam->get_property ("quantized-positions");
}
+ /*
+ If there is a beam but no stem, slope calculations depend on this
+ routine to return where the stem end /would/ be.
+ */
+ if (calc_beam && !beam && !unsmob_stencil (me->get_property ("stencil")))
+ return Interval ();
+
Real y1 = robust_scm2double ((calc_beam
? me->get_property ("stem-begin-position")
: me->get_pure_property ("stem-begin-position", 0, INT_MAX)),
Real y_attach = Note_head::stem_attachment_coordinate (head, Y_AXIS);
y_attach = head_height.linear_combination (y_attach);
- pos += d * y_attach * 2 / ss;
+ if (!isinf (y_attach) && !isnan (y_attach)) // empty heads
+ pos += d * y_attach * 2 / ss;
}
return pos;
Direction d = get_grob_direction (me);
Real real_attach = head_wid.linear_combination (d * attach);
- Real r = real_attach;
+ Real r = isnan(real_attach)? 0.0: real_attach;
/* If not centered: correct for stem thickness. */
string style = robust_symbol2string (f->get_property ("style"), "default");