Improve the derivative class for hermites. Compare http://synfig.org/images/a/a8...

[synfig.git] / synfig-core / trunk / src / synfig / valuenode_segcalctangent.cpp

diff --git a/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp b/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp
index a457624..a4b735c 100644 (file)
--- a/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp
@@ -6,7 +6,7 @@
 **
 **     \legal
 **     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
-**     Copyright (c) 2007 Chris Moore
+**     Copyright (c) 2007, 2008 Chris Moore
 **
 **     This package is free software; you can redistribute it and/or
 **     modify it under the terms of the GNU General Public License as
@@ -84,12 +84,7 @@ ValueNode_SegCalcTangent::operator()(Time t)const
        etl::hermite<Vector> curve(segment.p1,segment.p2,segment.t1,segment.t2);
        etl::derivative< etl::hermite<Vector> > deriv(curve);
 
-#ifdef ETL_FIXED_DERIVATIVE
-       return deriv((*amount_)(t).get(Real()))*(0.5);
-#else
-       return deriv((*amount_)(t).get(Real()))*(-0.5);
-#endif
-
+       return deriv((*amount_)(t).get(Real()));
 }