valuenode_scale.h valuenode_segcalctangent.h valuenode_segcalcvertex.h valuenode_sine.h \
valuenode_step.h valuenode_stripes.h valuenode_subtract.h valuenode_switch.h valuenode_timedswap.h \
valuenode_timeloop.h valuenode_timestring.h valuenode_twotone.h valuenode_vectorangle.h \
- valuenode_vectorlength.h valuenode_vectorx.h valuenode_vectory.h
+ valuenode_vectorlength.h valuenode_vectorx.h valuenode_vectory.h valuenode_log.h
VALUENODESOURCES = \
valuenode_add.cpp valuenode_anglestring.cpp valuenode_animated.cpp valuenode_atan2.cpp valuenode_bline.cpp \
valuenode_blinecalctangent.cpp valuenode_blinecalcvertex.cpp valuenode_blinecalcwidth.cpp \
valuenode_scale.cpp valuenode_segcalctangent.cpp valuenode_segcalcvertex.cpp valuenode_sine.cpp \
valuenode_step.cpp valuenode_stripes.cpp valuenode_subtract.cpp valuenode_switch.cpp valuenode_timedswap.cpp \
valuenode_timeloop.cpp valuenode_timestring.cpp valuenode_twotone.cpp valuenode_vectorangle.cpp \
- valuenode_vectorlength.cpp valuenode_vectorx.cpp valuenode_vectory.cpp
+ valuenode_vectorlength.cpp valuenode_vectorx.cpp valuenode_vectory.cpp valuenode_log.cpp
VALUEHEADERS = \
blinepoint.h gradient.h value.h
--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_log.cpp
+** \brief Implementation of the "Natural Logarithm" valuenode conversion.
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007, 2008 Chris Moore
+** Copyright (c) 2008 Carlos López
+**
+** 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_log.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_Logarithm::ValueNode_Logarithm(const ValueBase &x):
+ LinkableValueNode(x.get_type())
+{
+ Real value(x.get(Real()));
+ Real infinity(999999.0);
+ Real epsilon(0.000001);
+
+ value = exp(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_Logarithm*
+ValueNode_Logarithm::create(const ValueBase &x)
+{
+ return new ValueNode_Logarithm(x);
+}
+
+LinkableValueNode*
+ValueNode_Logarithm::create_new()const
+{
+ return new ValueNode_Logarithm(get_type());
+}
+
+ValueNode_Logarithm::~ValueNode_Logarithm()
+{
+ unlink_all();
+}
+
+bool
+ValueNode_Logarithm::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_Logarithm::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_Logarithm::link_count()const
+{
+ return 3;
+}
+
+String
+ValueNode_Logarithm::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_Logarithm::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_Logarithm::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_Logarithm::operator()(Time t)const
+{
+ 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 (link < epsilon)
+ return -infinite;
+ else
+ return log(link);
+}
+
+String
+ValueNode_Logarithm::get_name()const
+{
+ return "logarithm";
+}
+
+String
+ValueNode_Logarithm::get_local_name()const
+{
+ return _("Logarithm");
+}
+
+bool
+ValueNode_Logarithm::check_type(ValueBase::Type type)
+{
+ return type==ValueBase::TYPE_REAL;
+}
+
+
--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_log.h
+** \brief Header file for implementation of the "Natural Logarithm" valuenode conversion.
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 Chris Moore
+** Copyright (c) 2008 Carlos López
+**
+** 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
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIG_VALUENODE_LOGARITHM_H
+#define __SYNFIG_VALUENODE_LOGARITHM_H
+
+/* === H E A D E R S ======================================================= */
+
+#include "valuenode.h"
+
+/* === M A C R O S ========================================================= */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfig {
+
+class ValueNode_Logarithm : public LinkableValueNode
+{
+ ValueNode::RHandle link_;
+ ValueNode::RHandle epsilon_;
+ ValueNode::RHandle infinite_;
+
+public:
+ typedef etl::handle<ValueNode_Logarithm> Handle;
+ typedef etl::handle<const ValueNode_Logarithm> ConstHandle;
+
+ ValueNode_Logarithm(const ValueBase &x);
+
+ virtual ValueBase operator()(Time t)const;
+
+ virtual ~ValueNode_Logarithm();
+
+ virtual String get_name()const;
+ virtual String get_local_name()const;
+
+
+ virtual ValueNode::LooseHandle get_link_vfunc(int i)const;
+ virtual int link_count()const;
+ virtual String link_name(int i)const;
+
+ virtual String link_local_name(int i)const;
+ virtual int get_link_index_from_name(const String &name)const;
+
+protected:
+ LinkableValueNode* create_new()const;
+ virtual bool set_link_vfunc(int i,ValueNode::Handle x);
+
+public:
+ using synfig::LinkableValueNode::get_link_vfunc;
+
+ using synfig::LinkableValueNode::set_link_vfunc;
+ static bool check_type(ValueBase::Type type);
+ static ValueNode_Logarithm* create(const ValueBase &x);
+}; // END of class ValueNode_Logarithm
+
+}; // END of namespace synfig
+
+/* === E N D =============================================================== */
+
+#endif
+
+
projects / synfig.git / commitdiff