89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
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#include "CameraPathProperty.h"
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using namespace gsc;
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void CameraPathProperty::update(osgViewer::View* view)
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{
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osg::Camera* camera = view->getCamera();
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osg::FrameStamp* fs = view->getFrameStamp();
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if (_animationPath.valid())
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{
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osg::AnimationPath::ControlPoint cp;
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_animationPath->getInterpolatedControlPoint( fs->getSimulationTime(), cp );
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OSG_NOTICE<<"CameraPathProperty "<<fs->getFrameNumber()<<" "<<fs->getSimulationTime()<<std::endl;
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osg::Matrixd matrix;
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cp.getMatrix( matrix );
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camera->setViewMatrix( osg::Matrix::inverse(matrix) );
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}
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}
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void CameraPathProperty::loadAnimationPath()
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{
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_animationPath = new osg::AnimationPath;;
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//_animationPath->setLoopMode(osg::AnimationPath::LOOP);
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osgDB::ifstream in(_filename.c_str());
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if (!in)
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{
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OSG_WARN << "CameraPathProperty: Cannot open animation path file \"" << _filename << "\".\n";
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return;
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}
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_animationPath->read(in);
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}
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bool CameraPathProperty::getTimeRange(double& startTime, double& endTime) const
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{
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if (!_animationPath) return false;
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const osg::AnimationPath::TimeControlPointMap& tcpm = _animationPath->getTimeControlPointMap();
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if (tcpm.empty()) return false;
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startTime = tcpm.begin()->first;
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endTime = tcpm.rbegin()->first;
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return true;
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}
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void CameraPathProperty::resetTimeRange(double startTime, double endTime)
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{
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if (!_animationPath) return;
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osg::AnimationPath::TimeControlPointMap& tcpm = _animationPath->getTimeControlPointMap();
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if (tcpm.empty()) return;
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osg::AnimationPath::TimeControlPointMap copy_tcpm = tcpm;
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double offset = tcpm.begin()->first;
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double originalLength = tcpm.rbegin()->first - tcpm.begin()->first ;
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double scale = originalLength>0.0 ? (endTime-startTime)/originalLength : 1.0;
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tcpm.clear();
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for(osg::AnimationPath::TimeControlPointMap::iterator itr = copy_tcpm.begin();
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itr != copy_tcpm.end();
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++itr)
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{
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tcpm[startTime + (itr->first-offset)*scale] = itr->second;
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}
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}
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/////////////////////////////////////////////////////////////////////////////////////////
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//
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// Serialization support
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//
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REGISTER_OBJECT_WRAPPER( gsc_CameraPathProperty,
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new gsc::CameraPathProperty,
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gsc::CameraPathProperty,
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"osg::Object gsc::CameraPathProperty" )
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{
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ADD_STRING_SERIALIZER( AnimationPathFileName, "" );
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}
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