[Bf-blender-cvs] [ba08031] master: Fix T38817: FCurve autoclamp error

[Campbell Barton]

Commit: ba08031783a1aebc4559351454e3de1a9629b37a
Author: Campbell Barton
Date:   Fri Feb 28 12:09:17 2014 +1100
https://developer.blender.org/rBba08031783a1aebc4559351454e3de1a9629b37a

Fix T38817: FCurve autoclamp error

Animating large values with auto handles didn't work well,
(large variations on the Y axis would shrink handles).

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

M	source/blender/blenkernel/intern/curve.c

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

diff --git a/source/blender/blenkernel/intern/curve.c b/source/blender/blenkernel/intern/curve.c
index 01ddbc6..0d06313 100644
--- a/source/blender/blenkernel/intern/curve.c
+++ b/source/blender/blenkernel/intern/curve.c
@@ -2961,7 +2961,13 @@ static void calchandleNurb_intern(BezTriple *bezt, BezTriple *prev, BezTriple *n
 		tvec[0] = dvec_b[0] / len_b + dvec_a[0] / len_a;
 		tvec[1] = dvec_b[1] / len_b + dvec_a[1] / len_a;
 		tvec[2] = dvec_b[2] / len_b + dvec_a[2] / len_a;
-		len = len_v3(tvec) * 2.5614f;
+		if (mode != 0) {
+			len = tvec[0];
+		}
+		else {
+			len = len_v3(tvec);
+		}
+		len *=  2.5614f;
 
 		if (len != 0.0f) {
 			bool leftviolate = false, rightviolate = false;  /* for mode==2 */