+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file valuenode_blinereversetangent.cpp
-** \brief Implementation of the "Reverse 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
-** 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_blinereversetangent.h"
-#include "valuenode_bline.h"
-#include "valuenode_const.h"
-#include "valuenode_composite.h"
-#include "general.h"
-#include "exception.h"
-#include <ETL/hermite>
-#include <ETL/calculus>
-
-#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_BLineRevTangent::ValueNode_BLineRevTangent(const ValueBase::Type &x):
- LinkableValueNode(x)
-{
-}
-
-ValueNode_BLineRevTangent::ValueNode_BLineRevTangent(const ValueNode::Handle &x):
- LinkableValueNode(x->get_type())
-{
- if(x->get_type()!=ValueBase::TYPE_BLINEPOINT)
- throw Exception::BadType(ValueBase::type_local_name(x->get_type()));
-
- set_link("reference",x);
- set_link("reverse",ValueNode_Const::create(bool(false)));
-}
-
-ValueNode_BLineRevTangent*
-ValueNode_BLineRevTangent::create(const ValueBase &x)
-{
- return new ValueNode_BLineRevTangent(ValueNode_Const::create(x));
-}
-
-LinkableValueNode*
-ValueNode_BLineRevTangent::create_new()const
-{
- return new ValueNode_BLineRevTangent(get_type());
-}
-
-ValueNode_BLineRevTangent::~ValueNode_BLineRevTangent()
-{
- unlink_all();
-}
-
-ValueBase
-ValueNode_BLineRevTangent::operator()(Time t)const
-{
- if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
- printf("%s:%d operator()\n", __FILE__, __LINE__);
-
- if ((*reverse_)(t).get(bool()))
- {
- BLinePoint reference((*reference_)(t));
- BLinePoint ret(reference);
- if(ret.get_split_tangent_flag())
- {
- ret.set_tangent1(-reference.get_tangent2());
- ret.set_tangent2(-reference.get_tangent1());
- }
- else
- {
- // \todo what should we do here really?
- // it seems that there's some pre-existing bug
- // with the 'reference' convert, too - referencing
- // a non-split blinepoint causes some problems
- ret.set_tangent1(-reference.get_tangent1());
- }
- return ret;
- }
- else
- return (*reference_)(t);
-}
-
-String
-ValueNode_BLineRevTangent::get_name()const
-{
- return "blinerevtangent";
-}
-
-String
-ValueNode_BLineRevTangent::get_local_name()const
-{
- return _("Reverse Tangent");
-}
-
-bool
-ValueNode_BLineRevTangent::set_link_vfunc(int i,ValueNode::Handle value)
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: CHECK_TYPE_AND_SET_VALUE(reference_, get_type());
- case 1: CHECK_TYPE_AND_SET_VALUE(reverse_, ValueBase::TYPE_BOOL);
- }
- return false;
-}
-
-ValueNode::LooseHandle
-ValueNode_BLineRevTangent::get_link_vfunc(int i)const
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: return reference_;
- case 1: return reverse_;
- }
-
- return 0;
-}
-
-int
-ValueNode_BLineRevTangent::link_count()const
-{
- return 2;
-}
-
-String
-ValueNode_BLineRevTangent::link_name(int i)const
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: return "reference";
- case 1: return "reverse";
- }
- return String();
-}
-
-String
-ValueNode_BLineRevTangent::link_local_name(int i)const
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: return _("Reference");
- case 1: return _("Reverse");
- }
- return String();
-}
-
-int
-ValueNode_BLineRevTangent::get_link_index_from_name(const String &name)const
-{
- if(name=="reference") return 0;
- if(name=="reverse") return 1;
- throw Exception::BadLinkName(name);
-}
-
-bool
-ValueNode_BLineRevTangent::check_type(ValueBase::Type type)
-{
- return (type==ValueBase::TYPE_BLINEPOINT);
-}