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diff --git a/synfig-core/trunk/src/synfig/valuenode_dotproduct.cpp b/synfig-core/trunk/src/synfig/valuenode_dotproduct.cpp
new file mode 100644
index 0000000..20f8ae5
--- /dev/null
+++ b/synfig-core/trunk/src/synfig/valuenode_dotproduct.cpp
@@ -0,0 +1,194 @@
+/* === S Y N F I G ========================================================= */
+/*!	\file valuenode_dotproduct.cpp
+**	\brief Implementation of the "DotProduct" valuenode conversion.
+**
+**	$Id$
+**
+**	\legal
+**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**	Copyright (c) 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
+**	published by the Free Software Foundation; either version 2 of
+**	the License, or (at your option) any later version.
+**
+**	This package is distributed in the hope that it will be useful,
+**	but WITHOUT ANY WARRANTY; without even the implied warranty of
+**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+**	General Public License for more details.
+**	\endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+#	include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+#	include <config.h>
+#endif
+
+#include "valuenode_dotproduct.h"
+#include "valuenode_const.h"
+#include "general.h"
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+using namespace std;
+using namespace etl;
+using namespace synfig;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+ValueNode_DotProduct::ValueNode_DotProduct(const ValueBase &value):
+	LinkableValueNode(value.get_type())
+{
+	switch(value.get_type())
+	{
+	case ValueBase::TYPE_REAL:
+		set_link("lhs",ValueNode_Const::create(Vector(1,0)));
+		set_link("rhs",ValueNode_Const::create(Vector(0,1)));
+		break;
+	case ValueBase::TYPE_ANGLE:
+		set_link("lhs",ValueNode_Const::create(Vector(1,0)));
+		set_link("rhs",ValueNode_Const::create(Vector(0,1)));
+		break;
+	default:
+		throw Exception::BadType(ValueBase::type_local_name(value.get_type()));
+	}
+
+	DCAST_HACK_ENABLE();
+}
+
+LinkableValueNode*
+ValueNode_DotProduct::create_new()const
+{
+	return new ValueNode_DotProduct(get_type());
+}
+
+ValueNode_DotProduct*
+ValueNode_DotProduct::create(const ValueBase &x)
+{
+	return new ValueNode_DotProduct(x);
+}
+
+ValueNode_DotProduct::~ValueNode_DotProduct()
+{
+	unlink_all();
+}
+
+ValueBase
+ValueNode_DotProduct::operator()(Time t)const
+{
+	Vector lhs((*lhs_)(t).get(Vector()));
+	Vector rhs((*rhs_)(t).get(Vector()));
+
+	switch (get_type())
+	{
+	case ValueBase::TYPE_ANGLE:
+		return Angle::cos(lhs * rhs / lhs.mag() / rhs.mag()).mod();
+	case ValueBase::TYPE_REAL:
+		return lhs * rhs;
+	}
+
+	assert(0);
+	return ValueBase();
+}
+
+String
+ValueNode_DotProduct::get_name()const
+{
+	return "dotproduct";
+}
+
+String
+ValueNode_DotProduct::get_local_name()const
+{
+	return _("Dot Product");
+}
+
+bool
+ValueNode_DotProduct::set_link_vfunc(int i,ValueNode::Handle value)
+{
+	assert(i>=0 && i<link_count());
+
+	switch(i)
+	{
+	case 0: CHECK_TYPE_AND_SET_VALUE(lhs_, ValueBase::TYPE_VECTOR);
+	case 1: CHECK_TYPE_AND_SET_VALUE(rhs_, ValueBase::TYPE_VECTOR);
+	}
+	return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_DotProduct::get_link_vfunc(int i)const
+{
+	assert(i>=0 && i<link_count());
+
+	switch(i)
+	{
+	case 0: return lhs_;
+	case 1: return rhs_;
+	}
+
+	return 0;
+}
+
+int
+ValueNode_DotProduct::link_count()const
+{
+	return 2;
+}
+
+String
+ValueNode_DotProduct::link_name(int i)const
+{
+	assert(i>=0 && i<link_count());
+
+	switch(i)
+	{
+		case 0: return "lhs";
+		case 1: return "rhs";
+	}
+	return String();
+}
+
+String
+ValueNode_DotProduct::link_local_name(int i)const
+{
+	assert(i>=0 && i<link_count());
+
+	switch(i)
+	{
+		case 0: return _("LHS");
+		case 1: return _("RHS");
+	}
+	return String();
+}
+
+int
+ValueNode_DotProduct::get_link_index_from_name(const String &name)const
+{
+	if (name=="lhs") return 0;
+	if (name=="rhs") return 1;
+
+	throw Exception::BadLinkName(name);
+}
+
+bool
+ValueNode_DotProduct::check_type(ValueBase::Type type)
+{
+	return
+		type==ValueBase::TYPE_ANGLE ||
+		type==ValueBase::TYPE_REAL;
+}