Remove ancient trunk folder from svn repository

[synfig.git] / synfig-core / src / synfig / valuenode_reciprocal.cpp

diff --git a/synfig-core/src/synfig/valuenode_reciprocal.cpp b/synfig-core/src/synfig/valuenode_reciprocal.cpp
new file mode 100644 (file)
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+++ b/synfig-core/src/synfig/valuenode_reciprocal.cpp
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+/* === S Y N F I G ========================================================= */
+/*!    \file valuenode_reciprocal.cpp
+**     \brief Implementation of the "Reciprocal" 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
+**     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_reciprocal.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_Reciprocal::ValueNode_Reciprocal(const ValueBase &x):
+       LinkableValueNode(x.get_type())
+{
+       Real value(x.get(Real()));
+       Real infinity(999999.0);
+       Real epsilon(0.000001);
+
+       if (value == 0)
+               value = infinity;
+       else
+               value = 1.0/value;
+
+       set_link("link",     ValueNode_Const::create(Real(value)));
+       set_link("epsilon",  ValueNode_Const::create(Real(epsilon)));
+       set_link("infinite", ValueNode_Const::create(Real(infinity)));
+}
+
+ValueNode_Reciprocal*
+ValueNode_Reciprocal::create(const ValueBase &x)
+{
+       return new ValueNode_Reciprocal(x);
+}
+
+LinkableValueNode*
+ValueNode_Reciprocal::create_new()const
+{
+       return new ValueNode_Reciprocal(get_type());
+}
+
+ValueNode_Reciprocal::~ValueNode_Reciprocal()
+{
+       unlink_all();
+}
+
+bool
+ValueNode_Reciprocal::set_link_vfunc(int i,ValueNode::Handle value)
+{
+       assert(i>=0 && i<link_count());
+
+       switch(i)
+       {
+       case 0: CHECK_TYPE_AND_SET_VALUE(link_,     ValueBase::TYPE_REAL);
+       case 1: CHECK_TYPE_AND_SET_VALUE(epsilon_,  ValueBase::TYPE_REAL);
+       case 2: CHECK_TYPE_AND_SET_VALUE(infinite_, ValueBase::TYPE_REAL);
+       }
+       return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Reciprocal::get_link_vfunc(int i)const
+{
+       assert(i>=0 && i<link_count());
+
+       if(i==0) return link_;
+       if(i==1) return epsilon_;
+       if(i==2) return infinite_;
+
+       return 0;
+}
+
+int
+ValueNode_Reciprocal::link_count()const
+{
+       return 3;
+}
+
+String
+ValueNode_Reciprocal::link_local_name(int i)const
+{
+       assert(i>=0 && i<link_count());
+
+       if(i==0) return _("Link");
+       if(i==1) return _("Epsilon");
+       if(i==2) return _("Infinite");
+       return String();
+}
+
+String
+ValueNode_Reciprocal::link_name(int i)const
+{
+       assert(i>=0 && i<link_count());
+
+       if(i==0) return "link";
+       if(i==1) return "epsilon";
+       if(i==2) return "infinite";
+       return String();
+}
+
+int
+ValueNode_Reciprocal::get_link_index_from_name(const String &name)const
+{
+       if(name=="link")     return 0;
+       if(name=="epsilon")  return 1;
+       if(name=="infinite") return 2;
+
+       throw Exception::BadLinkName(name);
+}
+
+ValueBase
+ValueNode_Reciprocal::operator()(Time t)const
+{
+       if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
+               printf("%s:%d operator()\n", __FILE__, __LINE__);
+
+       Real link     = (*link_)    (t).get(Real());
+       Real epsilon  = (*epsilon_) (t).get(Real());
+       Real infinite = (*infinite_)(t).get(Real());
+
+       if (epsilon < 0.00000001)
+               epsilon = 0.00000001;
+
+       if (abs(link) < epsilon)
+               if (link < 0)
+                       return -infinite;
+               else
+                       return infinite;
+       else
+               return 1.0f / link;
+}
+
+String
+ValueNode_Reciprocal::get_name()const
+{
+       return "reciprocal";
+}
+
+String
+ValueNode_Reciprocal::get_local_name()const
+{
+       return _("Reciprocal");
+}
+
+bool
+ValueNode_Reciprocal::check_type(ValueBase::Type type)
+{
+       return type==ValueBase::TYPE_REAL;
+}