openscenegraph
AnimationUpdateCallback
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1/* -*-c++-*-
2 * Copyright (C) 2009 Cedric Pinson <cedric.pinson@plopbyte.net>
3 *
4 * This library is open source and may be redistributed and/or modified under
5 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
6 * (at your option) any later version. The full license is in LICENSE file
7 * included with this distribution, and on the openscenegraph.org website.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * OpenSceneGraph Public License for more details.
13*/
14
15#ifndef OSGANIMATION_ANIMATION_UPDATE_CALLBACK
16#define OSGANIMATION_ANIMATION_UPDATE_CALLBACK 1
17
18#include <osg/Object>
19#include <osgAnimation/Channel>
20#include <osgAnimation/Animation>
21#include <string>
22
23namespace osgAnimation
24{
25
26 class AnimationUpdateCallbackBase : public virtual osg::Object
27 {
28 public:
29 virtual bool link(Channel* channel) = 0;
30 virtual int link(Animation* animation) = 0;
31 };
32
33
34 template <class T>
35 class AnimationUpdateCallback : public AnimationUpdateCallbackBase, public T
36 {
37 public:
38 AnimationUpdateCallback() {}
39 AnimationUpdateCallback(const std::string& name) { T::setName(name);}
40 AnimationUpdateCallback(const AnimationUpdateCallback& apc,const osg::CopyOp& copyop): T(apc, copyop) {}
41
42 META_Object(osgAnimation, AnimationUpdateCallback<T>);
43
44 virtual osg::Callback* asCallback() { return T::asCallback(); }
45 virtual const osg::Callback* asCallback() const { return T::asCallback(); }
46
47 virtual osg::CallbackObject* asCallbackObject() { return T::asCallbackObject(); }
48 virtual const osg::CallbackObject* asCallbackObject() const { return T::asCallbackObject(); }
49
50
51 const std::string& getName() const { return T::getName(); }
52 bool link(Channel* /*channel*/) { return 0; }
53 int link(Animation* animation)
54 {
55 if (T::getName().empty())
56 {
57 osg::notify(osg::WARN) << "An update callback has no name, it means it could link only with \"\" named Target, often an error, discard" << std::endl;
58 return 0;
59 }
60 int nbLinks = 0;
61 for (ChannelList::iterator it = animation->getChannels().begin();
62 it != animation->getChannels().end();
63 ++it)
64 {
65 std::string targetName = (*it)->getTargetName();
66 if (targetName == T::getName())
67 {
68 AnimationUpdateCallbackBase* a = this;
69 a->link((*it).get());
70 nbLinks++;
71 }
72 }
73 return nbLinks;
74 }
75 };
76
77}
78
79#endif