+++ /dev/null
-/* === S Y N F I G ========================================================= */
-/*! \file valuenode_blinecalctangent.cpp
-** \brief Implementation of the "BLine 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_blinecalctangent.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_BLineCalcTangent::ValueNode_BLineCalcTangent(const ValueBase::Type &x):
- LinkableValueNode(x)
-{
- if(x!=ValueBase::TYPE_ANGLE && x!=ValueBase::TYPE_REAL && x!=ValueBase::TYPE_VECTOR)
- throw Exception::BadType(ValueBase::type_local_name(x));
-
- ValueNode_BLine* value_node(new ValueNode_BLine());
- set_link("bline",value_node);
- set_link("loop",ValueNode_Const::create(bool(false)));
- set_link("amount",ValueNode_Const::create(Real(0.5)));
- set_link("offset",ValueNode_Const::create(Angle::deg(0)));
- set_link("scale",ValueNode_Const::create(Real(1.0)));
- set_link("fixed_length",ValueNode_Const::create(bool(false)));
-}
-
-LinkableValueNode*
-ValueNode_BLineCalcTangent::create_new()const
-{
- return new ValueNode_BLineCalcTangent(get_type());
-}
-
-ValueNode_BLineCalcTangent*
-ValueNode_BLineCalcTangent::create(const ValueBase &x)
-{
- return new ValueNode_BLineCalcTangent(x.get_type());
-}
-
-ValueNode_BLineCalcTangent::~ValueNode_BLineCalcTangent()
-{
- unlink_all();
-}
-
-ValueBase
-ValueNode_BLineCalcTangent::operator()(Time t, Real amount)const
-{
- if (getenv("SYNFIG_DEBUG_VALUENODE_OPERATORS"))
- printf("%s:%d operator()\n", __FILE__, __LINE__);
-
- const std::vector<ValueBase> bline((*bline_)(t).get_list());
- handle<ValueNode_BLine> bline_value_node(bline_);
- const bool looped(bline_value_node->get_loop());
- int size = bline.size(), from_vertex;
- bool loop((*loop_)(t).get(bool()));
- Angle offset((*offset_)(t).get(Angle()));
- Real scale((*scale_)(t).get(Real()));
- bool fixed_length((*fixed_length_)(t).get(bool()));
- BLinePoint blinepoint0, blinepoint1;
-
- if (!looped) size--;
- if (size < 1)
- switch (get_type())
- {
- case ValueBase::TYPE_ANGLE: return Angle();
- case ValueBase::TYPE_REAL: return Real();
- case ValueBase::TYPE_VECTOR: return Vector();
- default: assert(0); return ValueBase();
- }
- if (loop)
- {
- amount = amount - int(amount);
- if (amount < 0) amount++;
- }
- else
- {
- if (amount < 0) amount = 0;
- if (amount > 1) amount = 1;
- }
-
- vector<ValueBase>::const_iterator iter, next(bline.begin());
-
- iter = looped ? --bline.end() : next++;
- amount = amount * size;
- from_vertex = int(amount);
- if (from_vertex > size-1) from_vertex = size-1;
- blinepoint0 = from_vertex ? *(next+from_vertex-1) : *iter;
- blinepoint1 = *(next+from_vertex);
-
- etl::hermite<Vector> curve(blinepoint0.get_vertex(), blinepoint1.get_vertex(),
- blinepoint0.get_tangent2(), blinepoint1.get_tangent1());
- etl::derivative< etl::hermite<Vector> > deriv(curve);
-
- switch (get_type())
- {
- case ValueBase::TYPE_ANGLE: return deriv(amount-from_vertex).angle() + offset;
- case ValueBase::TYPE_REAL:
- {
- if (fixed_length) return scale;
- return deriv(amount-from_vertex).mag() * scale;
- }
- case ValueBase::TYPE_VECTOR:
- {
- Vector tangent(deriv(amount-from_vertex));
- Angle angle(tangent.angle() + offset);
- Real mag = fixed_length ? scale : (tangent.mag() * scale);
- return Vector(Angle::cos(angle).get()*mag,
- Angle::sin(angle).get()*mag);
- }
- default: assert(0); return ValueBase();
- }
-}
-
-ValueBase
-ValueNode_BLineCalcTangent::operator()(Time t)const
-{
- Real amount((*amount_)(t).get(Real()));
- return (*this)(t, amount);
-}
-
-String
-ValueNode_BLineCalcTangent::get_name()const
-{
- return "blinecalctangent";
-}
-
-String
-ValueNode_BLineCalcTangent::get_local_name()const
-{
- return _("BLine Tangent");
-}
-
-bool
-ValueNode_BLineCalcTangent::set_link_vfunc(int i,ValueNode::Handle value)
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: CHECK_TYPE_AND_SET_VALUE(bline_, ValueBase::TYPE_LIST);
- case 1: CHECK_TYPE_AND_SET_VALUE(loop_, ValueBase::TYPE_BOOL);
- case 2: CHECK_TYPE_AND_SET_VALUE(amount_, ValueBase::TYPE_REAL);
- case 3: CHECK_TYPE_AND_SET_VALUE(offset_, ValueBase::TYPE_ANGLE);
- case 4: CHECK_TYPE_AND_SET_VALUE(scale_, ValueBase::TYPE_REAL);
- case 5: CHECK_TYPE_AND_SET_VALUE(fixed_length_, ValueBase::TYPE_BOOL);
- }
- return false;
-}
-
-ValueNode::LooseHandle
-ValueNode_BLineCalcTangent::get_link_vfunc(int i)const
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: return bline_;
- case 1: return loop_;
- case 2: return amount_;
- case 3: return offset_;
- case 4: return scale_;
- case 5: return fixed_length_;
- }
-
- return 0;
-}
-
-int
-ValueNode_BLineCalcTangent::link_count()const
-{
- return 6;
-}
-
-String
-ValueNode_BLineCalcTangent::link_name(int i)const
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: return "bline";
- case 1: return "loop";
- case 2: return "amount";
- case 3: return "offset";
- case 4: return "scale";
- case 5: return "fixed_length";
- }
- return String();
-}
-
-String
-ValueNode_BLineCalcTangent::link_local_name(int i)const
-{
- assert(i>=0 && i<link_count());
-
- switch(i)
- {
- case 0: return _("BLine");
- case 1: return _("Loop");
- case 2: return _("Amount");
- case 3: return _("Offset");
- case 4: return _("Scale");
- case 5: return _("Fixed Length");
- }
- return String();
-}
-
-int
-ValueNode_BLineCalcTangent::get_link_index_from_name(const String &name)const
-{
- if (name=="bline") return 0;
- if (name=="loop") return 1;
- if (name=="amount") return 2;
- if (name=="offset") return 3;
- if (name=="scale") return 4;
- if (name=="fixed_length") return 5;
- throw Exception::BadLinkName(name);
-}
-
-bool
-ValueNode_BLineCalcTangent::check_type(ValueBase::Type type)
-{
- return (type==ValueBase::TYPE_ANGLE ||
- type==ValueBase::TYPE_REAL ||
- type==ValueBase::TYPE_VECTOR);
-}
projects / synfig.git / blobdiff