void COSGCTRL::interpolateKeyFrames(osg::ref_ptr<osg::AnimationPath> ap, float fps)
{
CRSpline spline;
//build list of keyframes
for(int i = 0; i < m_ListCtrl.GetItemCount();i++)
{
KeyFrame* key = (KeyFrame*) m_ListCtrl.GetItemData(i);
osg::Vec3 pos = key->ctrlPoint.getPosition();
osg::Quat rot = key->ctrlPoint.getRotation();
spline.AddSplinePoint(vec3(key->timeStamp,pos.x(),pos.y(),pos.z(),rot.x(),rot.y(),rot.z(),rot.w()));
}
//get frame timedeltas based on 30 fps
float finaltime = ((KeyFrame*)m_ListCtrl.GetItemData(m_ListCtrl.GetItemCount()-1))->timeStamp;
float tdelta= 1.0 / fps;
//build list of interpolated frames
for(float i = 0.0; i < finaltime ; i += tdelta)
{
vec3 interp =spline.GetInterpolatedSplineKeyFrame(i);
KeyFrame key;
key.ctrlPoint.setPosition(osg::Vec3(interp.x,interp.y,interp.z));
key.ctrlPoint.setRotation(osg::Quat(interp.rx,interp.ry,interp.rz,interp.ra));
ap->insert(i,key.ctrlPoint);
}
//add last frame
vec3 interp =spline.GetInterpolatedSplineKeyFrame(finaltime);
KeyFrame key;
key.ctrlPoint.setPosition(osg::Vec3(interp.x,interp.y,interp.z));
key.ctrlPoint.setRotation(osg::Quat(interp.rx,interp.ry,interp.rz,interp.ra));
ap->insert(finaltime,key.ctrlPoint);
}
void appendLineStrip(osg::Vec3Array* src) {
int size = _array->size();
_array->insert(_array->end(), src->begin(), src->end());
_geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINE_STRIP, size, src->size()));
}