Hi All,
I have found a possible bug in osg::Sequence. Can anyone confirm this
and/or let me know if it is fixed in a newer release than 2.4?
To reproduce the bug:
1. Create a template osg::Sequence node (and underlying geometry)
but do not attach the node to the current active scenegraph.
2. At some point during the rendering loop (perhaps on a keystroke)
clone the sequence node (I use the call:
dynamic_cast<osg::Node*>(templateNode -> clone( osg::CopyOp(
(osg::CopyOp::CopyFlags)osg::CopyOp::DEEP_COPY_NODES ) ) )
3. Set the cloned sequence node duration to a value that makes the
animation run slower (i.e. 2.0).
4. Start the cloned sequence (using setMode()).
5. Repeat steps 2 - 4 and observe that the cloned sequences do not
run slow but run as fast, appearing to ignore the duration that has been
set on them.
Looking at the 'good documentation' (2.4 source code), I see that _start
is being set to _now (osg::Sequence::setMode(), line 192). Should this
not _start not be set to -1.0?
PS: It is also interesting to note that when loading OpenFlight file
with the frameTime set to 0.0, setting duration will have no effect.
Perhaps the OpenFlight loader should provide a very small default
frameTime value if the incoming value from the OpenFlight file is 0.0.
PS2: It also looks like the _nrepRemain value is not being reset when
setMode( START ) is called. To reset the value you must call setDuration
again.
Regards,
Andy
Business Development Manager
Embedded Simulation Group
GE Fanuc Intelligent Platforms
Applied Image Processing (formally Octec)
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