--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file valuenode_subtract.cpp
+** \brief Template File
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+** Copyright (c) 2007 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 "general.h"
+#include "valuenode_subtract.h"
+#include "valuenode_const.h"
+#include <stdexcept>
+#include "color.h"
+#include "vector.h"
+#include "angle.h"
+#include "real.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 ======================================================= */
+
+synfig::ValueNode_Subtract::ValueNode_Subtract(const ValueBase &value):
+ LinkableValueNode(value.get_type())
+{
+ set_scalar(1.0);
+ ValueBase::Type id(value.get_type());
+
+ switch(id)
+ {
+ case ValueBase::TYPE_ANGLE:
+ set_link("lhs",ValueNode_Const::create(value.get(Angle())));
+ set_link("rhs",ValueNode_Const::create(Angle::deg(0)));
+ break;
+ case ValueBase::TYPE_COLOR:
+ set_link("lhs",ValueNode_Const::create(value.get(Color())));
+ set_link("rhs",ValueNode_Const::create(Color(0,0,0,0)));
+ break;
+ case ValueBase::TYPE_INTEGER:
+ set_link("lhs",ValueNode_Const::create(value.get(int())));
+ set_link("rhs",ValueNode_Const::create(int(0)));
+ break;
+ case ValueBase::TYPE_REAL:
+ set_link("lhs",ValueNode_Const::create(value.get(Real())));
+ set_link("rhs",ValueNode_Const::create(Real(0)));
+ break;
+ case ValueBase::TYPE_TIME:
+ set_link("lhs",ValueNode_Const::create(value.get(Time())));
+ set_link("rhs",ValueNode_Const::create(Time(0)));
+ break;
+ case ValueBase::TYPE_VECTOR:
+ set_link("lhs",ValueNode_Const::create(value.get(Vector())));
+ set_link("rhs",ValueNode_Const::create(Vector(0,0)));
+ break;
+ default:
+ assert(0);
+ throw runtime_error("synfig::ValueNode_Subtract:Bad type "+ValueBase::type_name(id));
+ }
+
+ assert(get_lhs()->get_type()==id);
+ assert(get_rhs()->get_type()==id);
+ assert(get_type()==id);
+
+ DCAST_HACK_ENABLE();
+}
+
+LinkableValueNode*
+ValueNode_Subtract::create_new()const
+{
+ return new ValueNode_Subtract(get_type());
+}
+
+ValueNode_Subtract*
+ValueNode_Subtract::create(const ValueBase& value)
+{
+ return new ValueNode_Subtract(value);
+}
+
+synfig::ValueNode_Subtract::~ValueNode_Subtract()
+{
+ unlink_all();
+}
+
+void
+ValueNode_Subtract::set_scalar(Real value)
+{
+ set_link("scalar",ValueNode_Const::create(value));
+}
+
+bool
+synfig::ValueNode_Subtract::set_scalar(ValueNode::Handle value)
+{
+ if(value->get_type()!=ValueBase::TYPE_REAL&& !PlaceholderValueNode::Handle::cast_dynamic(value))
+ return false;
+ scalar=value;
+ return true;
+}
+
+bool
+synfig::ValueNode_Subtract::set_lhs(ValueNode::Handle x)
+{
+ assert(get_type());
+
+ if(!x ||
+ (get_type()==ValueBase::TYPE_NIL && !check_type(x->get_type())) ||
+ (get_type()!=ValueBase::TYPE_NIL && x->get_type()!=get_type() && !PlaceholderValueNode::Handle::cast_dynamic(x)))
+ return false;
+
+ ref_a=x;
+
+ return true;
+}
+
+bool
+synfig::ValueNode_Subtract::set_rhs(ValueNode::Handle x)
+{
+ assert(get_type());
+
+ if(!x ||
+ (get_type()==ValueBase::TYPE_NIL && !check_type(x->get_type())) ||
+ (get_type()!=ValueBase::TYPE_NIL && x->get_type()!=get_type() && !PlaceholderValueNode::Handle::cast_dynamic(x)))
+ return false;
+
+ ref_b=x;
+
+ return true;
+}
+
+synfig::ValueBase
+synfig::ValueNode_Subtract::operator()(Time t)const
+{
+ if(!ref_a || !ref_b)
+ throw runtime_error(strprintf("ValueNode_Subtract: %s",_("One or both of my parameters aren't set!")));
+ switch(get_type())
+ {
+ case ValueBase::TYPE_ANGLE:
+ return ((*ref_a)(t).get(Angle())-(*ref_b)(t).get(Angle()))*(*scalar)(t).get(Real());
+ case ValueBase::TYPE_COLOR:
+ return ((*ref_a)(t).get(Color())-(*ref_b)(t).get(Color()))*(*scalar)(t).get(Real());
+ case ValueBase::TYPE_INTEGER:
+ {
+ Real ret = ((*ref_a)(t).get(int())-(*ref_b)(t).get(int()))*(*scalar)(t).get(Real()) + 0.5f;
+ if (ret < 0) return static_cast<int>(ret-1);
+ return static_cast<int>(ret);
+ }
+ case ValueBase::TYPE_REAL:
+ return ((*ref_a)(t).get(Vector::value_type())-(*ref_b)(t).get(Vector::value_type()))*(*scalar)(t).get(Real());
+ case ValueBase::TYPE_TIME:
+ return ((*ref_a)(t).get(Time())-(*ref_b)(t).get(Time()))*(*scalar)(t).get(Real());
+ case ValueBase::TYPE_VECTOR:
+ return ((*ref_a)(t).get(Vector())-(*ref_b)(t).get(Vector()))*(*scalar)(t).get(Real());
+ default:
+ assert(0);
+ break;
+ }
+ return ValueBase();
+}
+
+bool
+ValueNode_Subtract::set_link_vfunc(int i,ValueNode::Handle value)
+{
+ assert(i>=0 && i<3);
+ switch(i)
+ {
+ case 0:
+ if(set_lhs(value)) { signal_child_changed()(i);signal_value_changed()(); return true; }
+ return false;
+ case 1:
+ if(set_rhs(value)) { signal_child_changed()(i);signal_value_changed()(); return true; }
+ return false;
+ case 2:
+ scalar=value;
+ signal_child_changed()(i);signal_value_changed()();
+ return true;
+ }
+
+ return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Subtract::get_link_vfunc(int i)const
+{
+ assert(i>=0 && i<3);
+ switch(i)
+ {
+ case 0: return ref_a;
+ case 1: return ref_b;
+ case 2: return scalar;
+ default: return 0;
+ }
+}
+
+int
+ValueNode_Subtract::link_count()const
+{
+ return 3;
+}
+
+String
+ValueNode_Subtract::link_local_name(int i)const
+{
+ assert(i>=0 && i<3);
+ switch(i)
+ {
+ case 0: return _("LHS");
+ case 1: return _("RHS");
+ case 2: return _("Scalar");
+ default: return String();
+ }
+}
+
+String
+ValueNode_Subtract::link_name(int i)const
+{
+ assert(i>=0 && i<3);
+ switch(i)
+ {
+ case 0: return "lhs";
+ case 1: return "rhs";
+ case 2: return "scalar";
+ default: return String();
+ }
+}
+
+int
+ValueNode_Subtract::get_link_index_from_name(const String &name)const
+{
+ if(name=="lhs") return 0;
+ if(name=="rhs") return 1;
+ if(name=="scalar") return 2;
+ throw Exception::BadLinkName(name);
+}
+
+String
+ValueNode_Subtract::get_name()const
+{
+ return "subtract";
+}
+
+String
+ValueNode_Subtract::get_local_name()const
+{
+ return _("Subtract");
+}
+
+bool
+ValueNode_Subtract::check_type(ValueBase::Type type)
+{
+ return type==ValueBase::TYPE_ANGLE
+ || type==ValueBase::TYPE_COLOR
+ || type==ValueBase::TYPE_INTEGER
+ || type==ValueBase::TYPE_REAL
+ || type==ValueBase::TYPE_TIME
+ || type==ValueBase::TYPE_VECTOR;
+}
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