X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Fvaluenode_segcalctangent.cpp;h=a4b735c2e902f80cd8ea2050f771bd049cebb025;hb=3c1610c55889e3169142d2af1eece43c63022672;hp=b9281e86cc5ae2bce667127725ffed826a8f1996;hpb=30a7039353c5a74bc3b642f7fba24eef252bd6b5;p=synfig.git

diff --git a/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp b/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp
index b9281e8..a4b735c 100644
--- a/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode_segcalctangent.cpp
@@ -1,11 +1,12 @@
 /* === S Y N F I G ========================================================= */
 /*!	\file valuenode_segcalctangent.cpp
-**	\brief Template File
+**	\brief Implementation of the "Segment Tangent" valuenode conversion.
 **
 **	$Id$
 **
 **	\legal
 **	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**	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
@@ -58,10 +59,10 @@ ValueNode_SegCalcTangent::ValueNode_SegCalcTangent(const ValueBase::Type &x):
 	LinkableValueNode(x)
 {
 	if(x!=ValueBase::TYPE_VECTOR)
-		throw Exception::BadType(ValueBase::type_name(x));
+		throw Exception::BadType(ValueBase::type_local_name(x));
 
-	segment_=ValueNode_Composite::create(ValueBase::TYPE_SEGMENT);
-	amount_=ValueNode_Const::create(Real(0.5));
+	set_link("segment",ValueNode_Const::create(ValueBase::TYPE_SEGMENT));
+	set_link("amount",ValueNode_Const::create(Real(0.5)));
 }
 
 ValueNode_SegCalcTangent*
@@ -83,12 +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()));
 }
 
 
@@ -111,20 +107,14 @@ ValueNode_SegCalcTangent::check_type(ValueBase::Type type)
 }
 
 bool
-ValueNode_SegCalcTangent::set_link_vfunc(int i,ValueNode::Handle x)
+ValueNode_SegCalcTangent::set_link_vfunc(int i,ValueNode::Handle value)
 {
-	assert(i==0 || i==1);
-	if(i==0)
-	{
-		segment_=x;
-		signal_child_changed()(i);signal_value_changed()();
-		return true;
-	}
-	if(i==1)
+	assert(i>=0 && i<link_count());
+
+	switch(i)
 	{
-		amount_=x;
-		signal_child_changed()(i);signal_value_changed()();
-		return true;
+	case 0: CHECK_TYPE_AND_SET_VALUE(segment_, ValueBase::TYPE_SEGMENT);
+	case 1: CHECK_TYPE_AND_SET_VALUE(amount_,  ValueBase::TYPE_REAL);
 	}
 	return false;
 }
@@ -132,7 +122,8 @@ ValueNode_SegCalcTangent::set_link_vfunc(int i,ValueNode::Handle x)
 ValueNode::LooseHandle
 ValueNode_SegCalcTangent::get_link_vfunc(int i)const
 {
-	assert(i==0 || i==1);
+	assert(i>=0 && i<link_count());
+
 	if(i==0)
 		return segment_;
 	if(i==1)
@@ -150,7 +141,8 @@ ValueNode_SegCalcTangent::link_count()const
 String
 ValueNode_SegCalcTangent::link_name(int i)const
 {
-	assert(i==0 || i==1);
+	assert(i>=0 && i<link_count());
+
 	if(i==0)
 		return "segment";
 	if(i==1)
@@ -161,7 +153,8 @@ ValueNode_SegCalcTangent::link_name(int i)const
 String
 ValueNode_SegCalcTangent::link_local_name(int i)const
 {
-	assert(i==0 || i==1);
+	assert(i>=0 && i<link_count());
+
 	if(i==0)
 		return _("Segment");
 	if(i==1)