+/* === 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;
+}