Hi, and thanks for your fast answer. To reconstruct my problem I take the osgAnimationNode Example and tweak its "main", so that it writes an osg file instead of creating the viewer ( Attachment ). When I open the osg file with an text editor, the UpdeteCallbacks are empty, and the file crashes the osganimationviewer with the error message: no osgAnimation::AnimationManagerBase found in the subgraph, no animations available
Files that I export from Blender do have osgAnimation::BasicAnimationManager and keyframe data in the UpdateCallback Block. I think the problem is, that in my case AnimtkUpdateCallback should be derived from osgAnimation::BasicAnimationManager insted of osg::NodeCallback, but I don't get it to work. Could you tweak this file so that it works ? That would be a great help, thx. Cheers, searching for Pivot of my Soul, PP !!! ( <- ParticlePeter ) ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=18273#18273
/* -*-c++-*- * Copyright (C) 2008 Cedric Pinson <[email protected]> * * 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 <iostream> #include <osg/Geometry> #include <osg/Shape> #include <osg/ShapeDrawable> #include <osgViewer/Viewer> #include <osgGA/TrackballManipulator> #include <osg/MatrixTransform> #include <osg/Material> #include <osgAnimation/Sampler> #include <osgDB/WriteFile> #include <stdio.h> class AnimtkUpdateCallback : public osg::NodeCallback { public: META_Object(osgAnimation, AnimtkUpdateCallback); AnimtkUpdateCallback() { _sampler = new osgAnimation::Vec3CubicBezierSampler; _playing = false; _lastUpdate = 0; } AnimtkUpdateCallback(const AnimtkUpdateCallback& val, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY): osg::Object(val, copyop), osg::NodeCallback(val, copyop), _sampler(val._sampler), _startTime(val._startTime), _currentTime(val._currentTime), _playing(val._playing), _lastUpdate(val._lastUpdate) { } /** Callback method called by the NodeVisitor when visiting a node.*/ virtual void operator()(osg::Node* node, osg::NodeVisitor* nv) { if (nv->getVisitorType() == osg::NodeVisitor::UPDATE_VISITOR && nv->getFrameStamp() && nv->getFrameStamp()->getFrameNumber() != _lastUpdate) { _lastUpdate = nv->getFrameStamp()->getFrameNumber(); _currentTime = osg::Timer::instance()->tick(); if (_playing && _sampler.get() && _sampler->getKeyframeContainer()) { osg::MatrixTransform* transform = dynamic_cast<osg::MatrixTransform*>(node); if (transform) { osg::Vec3 result; float t = osg::Timer::instance()->delta_s(_startTime, _currentTime); float duration = _sampler->getEndTime() - _sampler->getStartTime(); t = fmod(t, duration); t += _sampler->getStartTime(); _sampler->getValueAt(t, result); transform->setMatrix(osg::Matrix::translate(result)); } } } // note, callback is responsible for scenegraph traversal so // they must call traverse(node,nv) to ensure that the // scene graph subtree (and associated callbacks) are traversed. traverse(node,nv); } void start() { _startTime = osg::Timer::instance()->tick(); _currentTime = _startTime; _playing = true;} void stop() { _currentTime = _startTime; _playing = false;} osg::ref_ptr<osgAnimation::Vec3CubicBezierSampler> _sampler; osg::Timer_t _startTime; osg::Timer_t _currentTime; bool _playing; int _lastUpdate; }; class AnimtkStateSetUpdateCallback : public osg::StateSet::Callback { public: META_Object(osgAnimation, AnimtkStateSetUpdateCallback); AnimtkStateSetUpdateCallback() { _sampler = new osgAnimation::Vec4LinearSampler; _playing = false; _lastUpdate = 0; } AnimtkStateSetUpdateCallback(const AnimtkStateSetUpdateCallback& val, const osg::CopyOp& copyop = osg::CopyOp::SHALLOW_COPY): osg::Object(val, copyop), osg::StateSet::Callback(val, copyop), _sampler(val._sampler), _startTime(val._startTime), _currentTime(val._currentTime), _playing(val._playing), _lastUpdate(val._lastUpdate) { } /** Callback method called by the NodeVisitor when visiting a node.*/ virtual void operator()(osg::StateSet* state, osg::NodeVisitor* nv) { if (state && nv->getVisitorType() == osg::NodeVisitor::UPDATE_VISITOR && nv->getFrameStamp() && nv->getFrameStamp()->getFrameNumber() != _lastUpdate) { _lastUpdate = nv->getFrameStamp()->getFrameNumber(); _currentTime = osg::Timer::instance()->tick(); if (_playing && _sampler.get() && _sampler->getKeyframeContainer()) { osg::Material* material = dynamic_cast<osg::Material*>(state->getAttribute(osg::StateAttribute::MATERIAL)); if (material) { osg::Vec4 result; float t = osg::Timer::instance()->delta_s(_startTime, _currentTime); float duration = _sampler->getEndTime() - _sampler->getStartTime(); t = fmod(t, duration); t += _sampler->getStartTime(); _sampler->getValueAt(t, result); material->setDiffuse(osg::Material::FRONT_AND_BACK, result); } } } } void start() { _startTime = osg::Timer::instance()->tick(); _currentTime = _startTime; _playing = true;} void stop() { _currentTime = _startTime; _playing = false;} osg::ref_ptr<osgAnimation::Vec4LinearSampler> _sampler; osg::Timer_t _startTime; osg::Timer_t _currentTime; bool _playing; int _lastUpdate; }; osg::Geode* createAxis() { osg::Geode* geode = new osg::Geode; osg::ref_ptr<osg::Geometry> geometry (new osg::Geometry()); osg::ref_ptr<osg::Vec3Array> vertices (new osg::Vec3Array()); vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0)); vertices->push_back (osg::Vec3 ( 10.0, 0.0, 0.0)); vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0)); vertices->push_back (osg::Vec3 ( 0.0, 10.0, 0.0)); vertices->push_back (osg::Vec3 ( 0.0, 0.0, 0.0)); vertices->push_back (osg::Vec3 ( 0.0, 0.0, 10.0)); geometry->setVertexArray (vertices.get()); osg::ref_ptr<osg::Vec4Array> colors (new osg::Vec4Array()); colors->push_back (osg::Vec4 (1.0f, 0.0f, 0.0f, 1.0f)); colors->push_back (osg::Vec4 (1.0f, 0.0f, 0.0f, 1.0f)); colors->push_back (osg::Vec4 (0.0f, 1.0f, 0.0f, 1.0f)); colors->push_back (osg::Vec4 (0.0f, 1.0f, 0.0f, 1.0f)); colors->push_back (osg::Vec4 (0.0f, 0.0f, 1.0f, 1.0f)); colors->push_back (osg::Vec4 (0.0f, 0.0f, 1.0f, 1.0f)); geometry->setColorArray (colors.get()); geometry->setColorBinding (osg::Geometry::BIND_PER_VERTEX); geometry->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES,0,6)); geode->addDrawable( geometry.get() ); geode->getOrCreateStateSet()->setMode(GL_LIGHTING, false); return geode; } osg::StateSet* setupStateSet() { osg::StateSet* st = new osg::StateSet; st->setAttributeAndModes(new osg::Material, true); st->setMode(GL_BLEND, true); AnimtkStateSetUpdateCallback* callback = new AnimtkStateSetUpdateCallback; osgAnimation::Vec4KeyframeContainer* keys = callback->_sampler->getOrCreateKeyframeContainer(); keys->push_back(osgAnimation::Vec4Keyframe(0, osg::Vec4(0,0,0,0))); keys->push_back(osgAnimation::Vec4Keyframe(2, osg::Vec4(0.5,0,0,0.5))); keys->push_back(osgAnimation::Vec4Keyframe(4, osg::Vec4(0,0.5,0,1))); keys->push_back(osgAnimation::Vec4Keyframe(6, osg::Vec4(0,0,0.5,1))); keys->push_back(osgAnimation::Vec4Keyframe(8, osg::Vec4(1,1,1,0.5))); keys->push_back(osgAnimation::Vec4Keyframe(10, osg::Vec4(0,0,0,0))); callback->start(); st->setUpdateCallback(callback); return st; } osg::Node* setupCube() { osg::Geode* geode = new osg::Geode; geode->addDrawable(new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0f,0.0f,0.0f),2))); geode->setStateSet(setupStateSet()); return geode; } osg::MatrixTransform* setupAnimtkNode() { osg::Vec3 v[5]; v[0] = osg::Vec3(0,0,0); v[1] = osg::Vec3(10,-50,0); v[2] = osg::Vec3(30,-10,20); v[3] = osg::Vec3(-10,20,-20); v[4] = osg::Vec3(0,0,0); osg::MatrixTransform* node = new osg::MatrixTransform; AnimtkUpdateCallback* callback = new AnimtkUpdateCallback; osgAnimation::Vec3CubicBezierKeyframeContainer* keys = callback->_sampler->getOrCreateKeyframeContainer(); keys->push_back(osgAnimation::Vec3CubicBezierKeyframe(0, osgAnimation::Vec3CubicBezier( v[0], // pos v[0] + (v[0] - v[3]), // p1 v[1] - (v[1] - v[0]) // p2 ))); keys->push_back(osgAnimation::Vec3CubicBezierKeyframe(2, osgAnimation::Vec3CubicBezier( v[1], // pos v[1] + (v[1] - v[0]), v[2] - (v[2] - v[1]) ))); keys->push_back(osgAnimation::Vec3CubicBezierKeyframe(4, osgAnimation::Vec3CubicBezier( v[2], // pos v[2] + (v[2] - v[1]), v[3] - (v[3] - v[2]) ))); keys->push_back(osgAnimation::Vec3CubicBezierKeyframe(6, osgAnimation::Vec3CubicBezier( v[3], // pos v[3] + (v[3] - v[2]), v[4] - (v[4] - v[3]) ))); keys->push_back(osgAnimation::Vec3CubicBezierKeyframe(8, osgAnimation::Vec3CubicBezier( v[4], // pos v[4] + (v[4] - v[3]), v[0] - (v[0] - v[4]) ))); callback->start(); node->setUpdateCallback(callback); node->addChild(setupCube()); return node; } /* int main (int argc, char* argv[]) { osg::ArgumentParser arguments(&argc, argv); osgViewer::Viewer viewer(arguments); osgGA::TrackballManipulator* manipulator = new osgGA::TrackballManipulator(); viewer.setCameraManipulator(manipulator); osg::Group* root = new osg::Group; root->setInitialBound(osg::BoundingSphere(osg::Vec3(10,0,10), 30)); root->addChild(createAxis()); osg::MatrixTransform* node = setupAnimtkNode(); node->addChild(createAxis()); root->addChild(node); viewer.setSceneData( root ); viewer.realize(); while (!viewer.done()) { viewer.frame(); } } */ int main( int , char** ) { osg::ref_ptr< osg::Group > root = new osg::Group ; root->setInitialBound(osg::BoundingSphere(osg::Vec3(10,0,10), 30)); root->addChild(createAxis()); osg::MatrixTransform* node = setupAnimtkNode(); root->addChild(node); if ( !root.valid() ) osg::notify( osg::FATAL ) << "Failed in createSceneGraph() !" << std::endl ; bool arg = false; bool result = osgDB::writeObjectFile( * ( root.get() ) , "animNode.osg" ) ; if ( !result ) osg::notify( osg::FATAL ) << "Failed in osgDB::writeNodeFile() !" << std::endl ; }
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