New source file for the 'random' valuenode.

git-svn-id: http://svn.voria.com/code@905 1f10aa63-cdf2-0310-b900-c93c546f37ac

diff --git a/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp b/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp
new file mode 100644 (file)
index 0000000..b49b57b
--- /dev/null
+++ b/synfig-core/trunk/src/modules/mod_noise/valuenode_random.cpp
@@ -0,0 +1,277 @@
+/* === S Y N F I G ========================================================= */
+/*!    \file valuenode_random.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 "valuenode_random.h"
+#include "synfig/valuenode_const.h"
+#include "synfig/general.h"
+#include "synfig/color.h"
+#include <ETL/misc>
+
+#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_Random::ValueNode_Random(const ValueBase &value):
+       LinkableValueNode(value.get_type())
+{
+       random.set_seed(time(NULL));
+
+       set_link("radius",ValueNode_Const::create(Real(1)));
+       set_link("seed",ValueNode_Const::create(random.get_seed()));
+       set_link("speed",ValueNode_Const::create(Real(1)));
+       set_link("smooth",ValueNode_Const::create(int(0)));
+
+       switch(get_type())
+       {
+       case ValueBase::TYPE_ANGLE:
+               set_link("link",ValueNode_Const::create(value.get(Angle())));
+               break;
+       case ValueBase::TYPE_COLOR:
+               set_link("link",ValueNode_Const::create(value.get(Color())));
+               break;
+       case ValueBase::TYPE_INTEGER:
+               set_link("link",ValueNode_Const::create(value.get(int())));
+               break;
+       case ValueBase::TYPE_REAL:
+               set_link("link",ValueNode_Const::create(value.get(Real())));
+               break;
+       case ValueBase::TYPE_TIME:
+               set_link("link",ValueNode_Const::create(value.get(Time())));
+               break;
+       case ValueBase::TYPE_VECTOR:
+               set_link("link",ValueNode_Const::create(value.get(Vector())));
+               break;
+       default:
+               throw Exception::BadType(ValueBase::type_name(get_type()));
+       }
+
+       DCAST_HACK_ENABLE();
+}
+
+LinkableValueNode*
+ValueNode_Random::create_new()const
+{
+       return new ValueNode_Random(get_type());
+}
+
+ValueNode_Random*
+ValueNode_Random::create(const ValueBase &x)
+{
+       return new ValueNode_Random(x);
+}
+
+ValueNode_Random::~ValueNode_Random()
+{
+       unlink_all();
+}
+
+ValueBase
+ValueNode_Random::operator()(Time t)const
+{
+       typedef const Random::SmoothType Smooth;
+
+       Real    radius  = (*radius_)(t).get(Real());
+       int             seed    = (*seed_)(t).get(int());
+       int             smooth  = (*smooth_)(t).get(int());
+       float   speed   = (*speed_ )(t).get(Real()) * t;
+
+       random.set_seed(seed);
+
+       switch(get_type())
+       {
+       case ValueBase::TYPE_ANGLE:
+               return ((*link_)(t).get( Angle()) +
+                               Angle::deg(random(Smooth(smooth), 0, 0, 0, speed) * radius));
+
+       case ValueBase::TYPE_COLOR:
+               return (((*link_)(t).get( Color()) +
+                                Color(random(Smooth(smooth), 0, 0, 0, speed),
+                                          random(Smooth(smooth), 1, 0, 0, speed),
+                                          random(Smooth(smooth), 2, 0, 0, speed), 0) * radius).clamped());
+
+       case ValueBase::TYPE_INTEGER:
+               return round_to_int((*link_)(t).get(   int()) +
+                                                       random(Smooth(smooth), 0, 0, 0, speed) * radius);
+
+       case ValueBase::TYPE_REAL:
+               return ((*link_)(t).get(  Real()) +
+                               random(Smooth(smooth), 0, 0, 0, speed) * radius);
+
+       case ValueBase::TYPE_TIME:
+               return ((*link_)(t).get(  Time()) +
+                               random(Smooth(smooth), 0, 0, 0, speed) * radius);
+
+       case ValueBase::TYPE_VECTOR:
+       {
+               float length(random(Smooth(smooth), 0, 0, 0, speed) * radius);
+               Angle::rad angle(random(Smooth(smooth), 1, 0, 0, speed) * PI);
+
+               return ((*link_)(t).get(Vector()) +
+                               Vector(Angle::cos(angle).get(), Angle::sin(angle).get()) * length);
+       }
+
+       default:
+               assert(0);
+               break;
+       }
+
+       return ValueBase();
+}
+
+
+String
+ValueNode_Random::get_name()const
+{
+       return "random";
+}
+
+String
+ValueNode_Random::get_local_name()const
+{
+       return _("Random");
+}
+
+bool
+ValueNode_Random::set_link_vfunc(int i,ValueNode::Handle x)
+{
+       assert(i>=0 && i<link_count());
+       switch(i)
+       {
+       case 0:
+               link_=x;
+               signal_child_changed()(i);signal_value_changed()();
+               return true;
+       case 1:
+               radius_=x;
+               signal_child_changed()(i);signal_value_changed()();
+               return true;
+       case 2:
+               seed_=x;
+               signal_child_changed()(i);signal_value_changed()();
+               return true;
+       case 3:
+               speed_=x;
+               signal_child_changed()(i);signal_value_changed()();
+               return true;
+       case 4:
+               smooth_=x;
+               signal_child_changed()(i);signal_value_changed()();
+               return true;
+       }
+       return false;
+}
+
+ValueNode::LooseHandle
+ValueNode_Random::get_link_vfunc(int i)const
+{
+       assert(i>=0 && i<link_count());
+       switch(i)
+       {
+       case 0: return link_;
+       case 1: return radius_;
+       case 2: return seed_;
+       case 3: return speed_;
+       case 4: return smooth_;
+       }
+       return 0;
+}
+
+int
+ValueNode_Random::link_count()const
+{
+       return 5;
+}
+
+String
+ValueNode_Random::link_name(int i)const
+{
+       assert(i>=0 && i<link_count());
+       switch(i)
+       {
+       case 0: return "link";
+       case 1: return "radius";
+       case 2: return "seed";
+       case 3: return "speed";
+       case 4: return "smooth";
+       }
+       return String();
+}
+
+String
+ValueNode_Random::link_local_name(int i)const
+{
+       assert(i>=0 && i<link_count());
+       switch(i)
+       {
+       case 0: return _("Link");
+       case 1: return _("Radius");
+       case 2: return _("Seed");
+       case 3: return _("Animation Speed");
+       case 4: return _("Interpolation");
+       }
+       return String();
+}
+
+int
+ValueNode_Random::get_link_index_from_name(const String &name)const
+{
+       if(name=="link"  ) return 0;
+       if(name=="radius") return 1;
+       if(name=="seed"  ) return 2;
+       if(name=="speed" ) return 3;
+       if(name=="smooth") return 4;
+       throw Exception::BadLinkName(name);
+}
+
+bool
+ValueNode_Random::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    ;
+}