X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmisc.cc;fp=lily%2Fmisc.cc;h=58d0a6e9d301af63baead8b7e8f96d2f7cb0d0ff;hb=0ac07f31e0f95fc18e5916ce756b9c746af7cc58;hp=801266d79b07ff6a8114c572b00f29f51a186259;hpb=2f1263e2ccdddcac2eb9f7d8ce2ed92867d3d160;p=lilypond.git
diff --git a/lily/misc.cc b/lily/misc.cc
index 801266d79b..58d0a6e9d3 100644
--- a/lily/misc.cc
+++ b/lily/misc.cc
@@ -18,7 +18,10 @@
along with LilyPond. If not, see .
*/
+#include
+
#include "misc.hh"
+#include "offset.hh"
#include "warn.hh"
/*
@@ -75,7 +78,7 @@ convex_amplifier (Real standard_x, Real increase_factor, Real x)
}
string
-camel_case_to_lisp_identifier (string in)
+camel_case_to_lisp_identifier (const string &in)
{
vector out;
@@ -94,3 +97,20 @@ camel_case_to_lisp_identifier (string in)
return result;
}
+
+Offset
+get_point_in_y_direction (Offset orig, Real slope, Real dist, Direction dir)
+{
+ if (slope == infinity_f)
+ return orig + Offset (dir * dist, 0.0);
+
+ Real x = slope == 0.0 ? 1.0 * dir : 1.0 * sign (slope) * dir;
+ Real y = slope * x;
+ Real angle = atan2 (y, x);
+
+ complex orig_c (orig[X_AXIS], orig[Y_AXIS]);
+ complex to_move = polar (dist, angle);
+ complex res = orig_c + to_move;
+
+ return Offset (real (res), imag (res));
+}