[Bf-blender-cvs] [6b5ad4a] master: Curve Fitting: 'offset' method used sign when it shouldn't

[Campbell Barton]

Commit: 6b5ad4a4d7039a78c4d7dc0315e855787b4dd10b
Author: Campbell Barton
Date:   Sun Sep 25 12:03:10 2016 +1000
Branches: master
https://developer.blender.org/rB6b5ad4a4d7039a78c4d7dc0315e855787b4dd10b

Curve Fitting: 'offset' method used sign when it shouldn't

===================================================================

M	extern/curve_fit_nd/intern/curve_fit_cubic.c

===================================================================

diff --git a/extern/curve_fit_nd/intern/curve_fit_cubic.c b/extern/curve_fit_nd/intern/curve_fit_cubic.c
index ea482a1..0a32f1e 100644
--- a/extern/curve_fit_nd/intern/curve_fit_cubic.c
+++ b/extern/curve_fit_nd/intern/curve_fit_cubic.c
@@ -611,8 +611,8 @@ static void cubic_from_points_offset_fallback(
 		}
 	}
 
-	double alpha_l = (dists[0] / 0.75) /  dot_vnvn(tan_l, a[0], dims);
-	double alpha_r = (dists[1] / 0.75) / -dot_vnvn(tan_r, a[1], dims);
+	double alpha_l = (dists[0] / 0.75) / fabs(dot_vnvn(tan_l, a[0], dims));
+	double alpha_r = (dists[1] / 0.75) / fabs(dot_vnvn(tan_r, a[1], dims));
 
 	if (!(alpha_l > 0.0)) {
 		alpha_l = dir_dist / 3.0;