/usr/share/openscenegraph/examples/osgframerenderer/CameraPathProperty.cpp is in openscenegraph-examples 3.2.1-7ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | #include "CameraPathProperty.h"
using namespace gsc;
void CameraPathProperty::update(osgViewer::View* view)
{
osg::Camera* camera = view->getCamera();
osg::FrameStamp* fs = view->getFrameStamp();
if (_animationPath.valid())
{
osg::AnimationPath::ControlPoint cp;
_animationPath->getInterpolatedControlPoint( fs->getSimulationTime(), cp );
OSG_NOTICE<<"CameraPathProperty "<<fs->getFrameNumber()<<" "<<fs->getSimulationTime()<<std::endl;
osg::Matrixd matrix;
cp.getMatrix( matrix );
camera->setViewMatrix( osg::Matrix::inverse(matrix) );
}
}
void CameraPathProperty::loadAnimationPath()
{
_animationPath = new osg::AnimationPath;;
//_animationPath->setLoopMode(osg::AnimationPath::LOOP);
osgDB::ifstream in(_filename.c_str());
if (!in)
{
OSG_WARN << "CameraPathProperty: Cannot open animation path file \"" << _filename << "\".\n";
return;
}
_animationPath->read(in);
}
bool CameraPathProperty::getTimeRange(double& startTime, double& endTime) const
{
if (!_animationPath) return false;
const osg::AnimationPath::TimeControlPointMap& tcpm = _animationPath->getTimeControlPointMap();
if (tcpm.empty()) return false;
startTime = tcpm.begin()->first;
endTime = tcpm.rbegin()->first;
return true;
}
void CameraPathProperty::resetTimeRange(double startTime, double endTime)
{
if (!_animationPath) return;
osg::AnimationPath::TimeControlPointMap& tcpm = _animationPath->getTimeControlPointMap();
if (tcpm.empty()) return;
osg::AnimationPath::TimeControlPointMap copy_tcpm = tcpm;
double offset = tcpm.begin()->first;
double originalLength = tcpm.rbegin()->first - tcpm.begin()->first ;
double scale = originalLength>0.0 ? (endTime-startTime)/originalLength : 1.0;
tcpm.clear();
for(osg::AnimationPath::TimeControlPointMap::iterator itr = copy_tcpm.begin();
itr != copy_tcpm.end();
++itr)
{
tcpm[startTime + (itr->first-offset)*scale] = itr->second;
}
}
/////////////////////////////////////////////////////////////////////////////////////////
//
// Serialization support
//
REGISTER_OBJECT_WRAPPER( gsc_CameraPathProperty,
new gsc::CameraPathProperty,
gsc::CameraPathProperty,
"osg::Object gsc::CameraPathProperty" )
{
ADD_STRING_SERIALIZER( AnimationPathFileName, "" );
}
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