X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=funcs.scad.cpp;h=5857c933a837f888bf22faedda5b455e6df0e973;hp=92292bebc3db62a31cc802f2b1a0406815d65b95;hb=4102833288a860f53df35fbd023df44933aec3f0;hpb=eb70657ee3ca038b7ed8af809b53ac37aa500550

diff --git a/funcs.scad.cpp b/funcs.scad.cpp
index 92292be..5857c93 100644
--- a/funcs.scad.cpp
+++ b/funcs.scad.cpp
@@ -16,6 +16,8 @@ function vectorlen(v)   = sqrt(vsq(0) + vsq(1) + vsq(2));
 function unitvector2d(v) = v / vectorlen2d(v);
 function unitvector(v)   = v / vectorlen(v);
 
+function atan2vector(v) = atan2(v[1], v[0]);
+
 // | m[0][0] m[0][1] |
 // | m[1][0] m[1][1] |
 function determinant2(m) = (m[0][0] * m[1][1] - m[0][1] * m[1][0]);