From Cedric Pinson, Pulled in osgAnimation from OpenSceneGraph-osgWidget-dev into svn/trunk.

src/osgAnimation/AnimationManager.cpp

@@ -0,0 +1,141 @@
+/*  -*-c++-*- 
+ *  Copyright (C) 2008 Cedric Pinson <mornifle@plopbyte.net>
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library 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 
+ * OpenSceneGraph Public License for more details.
+*/
+
+#include <osgAnimation/AnimationManager>
+#include <osgAnimation/LinkVisitor>
+#include <osgAnimation/Assert>
+
+using namespace osgAnimation;
+
+
+AnimationManager::~AnimationManager() {}
+
+
+void AnimationManager::stopAll()
+{
+    // loop over all playing animation
+    for( AnimationLayers::iterator iterAnim = _animationsPlaying.begin(); iterAnim != _animationsPlaying.end(); ++iterAnim ) 
+    {
+        AnimationList& list = iterAnim->second;
+        for (AnimationList::iterator it = list.begin(); it != list.end(); it++)
+            (*it)->resetTargets();
+    }
+    _animationsPlaying.clear();
+}
+
+AnimationManager::AnimationManager()
+{
+    _lastUpdate = 0; 
+}
+void AnimationManager::playAnimation(Animation* pAnimation, int priority, float weight)
+{
+    bool r = findAnimation(pAnimation);
+    OSGANIMATION_ASSERT(r && "This animation is not registered");
+
+    if ( isPlaying(pAnimation) )
+        stopAnimation(pAnimation);
+  
+    _animationsPlaying[priority].push_back(pAnimation);
+    pAnimation->setStartTime(_lastUpdate);
+    pAnimation->setWeight(weight);
+}
+
+bool AnimationManager::stopAnimation(Animation* pAnimation)
+{
+    // search though the layer and remove animation
+    for( AnimationLayers::iterator iterAnim = _animationsPlaying.begin(); iterAnim != _animationsPlaying.end(); ++iterAnim ) 
+    {
+        AnimationList& list = iterAnim->second;
+        for (AnimationList::iterator it = list.begin(); it != list.end(); it++)
+            if( (*it) == pAnimation )
+            {
+                (*it)->resetTargets();
+                list.erase(it);
+                return true;
+            }
+    }
+    return false;
+}
+
+
+void AnimationManager::update (double time)
+{
+    if (!_lastUpdate)
+        _lastUpdate = time;
+
+    // could filtered with an active flag
+    for (TargetSet::iterator it = _targets.begin(); it != _targets.end(); it++)
+        (*it).get()->reset();
+
+
+    // update from high priority to low priority
+    for( AnimationLayers::reverse_iterator iterAnim = _animationsPlaying.rbegin(); iterAnim != _animationsPlaying.rend(); ++iterAnim )
+    {
+        // update all animation
+        std::vector<int> toremove;
+        AnimationList& list = iterAnim->second;
+        for (unsigned int i = 0; i < list.size(); i++)
+        {
+            if (! list[i]->update(time))
+                toremove.push_back(i);
+        }
+
+        // remove finished animation
+        while (!toremove.empty())
+        {
+            list.erase(list.begin() + toremove.back());
+            toremove.pop_back();
+        }
+    }
+
+    for (TargetSet::iterator it = _targets.begin(); it != _targets.end(); it++)
+        (*it).get()->normalize();
+}
+
+
+bool AnimationManager::findAnimation(Animation* pAnimation) 
+{
+    for( AnimationList::const_iterator iterAnim = _animations.begin(); iterAnim != _animations.end(); ++iterAnim ) 
+    {
+        if ( (*iterAnim) == pAnimation )
+            return true;
+    }
+    return false;
+}
+
+
+bool AnimationManager::isPlaying(Animation* pAnimation) 
+{
+    for( AnimationLayers::iterator iterAnim = _animationsPlaying.begin(); iterAnim != _animationsPlaying.end(); ++iterAnim )
+    {
+        AnimationList& list = iterAnim->second;
+        for (AnimationList::iterator it = list.begin(); it != list.end(); it++)
+            if ( (*it) == pAnimation )
+                return true;
+    }
+    return false;
+}
+
+bool AnimationManager::isPlaying(const std::string& name)
+{
+    // loop over all playing animation
+    for( AnimationLayers::iterator iterAnim = _animationsPlaying.begin(); iterAnim != _animationsPlaying.end(); ++iterAnim )
+    {
+        AnimationList& list = iterAnim->second;
+        for (AnimationList::iterator it = list.begin(); it != list.end(); it++)
+            if ( (*it)->getName() == name )
+                return true;
+    }
+    return false;
+}