"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 \u2013 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 \u2018good documentation\u2019 (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?"
to STOP. Subsequently, you can restart it from the beginning by
setting the mode to START. This does not work as expected. The _now
time is not updated while the mode is STOP, which causes the items in
the sequence to flash by very quickly when the mode is set to START.
For example, if the mode was set to STOP and left that way for 30
seconds, and there are 10 items in the sequence, when the mode is set
to START all the items will flash by (in 3 loops) while the _now time
catches up with the real time, and then the sequence will go on at the
rate it should.
This is a simple fix for that, which updates the _now time regardless
of the mode the sequence is in."
"Attached are updates of src/osg/Sequence.spp and include/osg/Sequence.
I've taken _sbegin/_send/_ubegin/_uend and _step our of the include file
and made them local variables in whatever method might need them.
I got rid of the _recalculate method as it was only getting used in
one place.
I also found a cut/paste bug in setMode's START case."
Note from Robert Osfield, Also includes some guards against crashes that was occuring in this new
code when handling empty Sequences.
Added setting of osg_SimulationTime and osg_DeltaSimulationTime to the uniforms set by SceneView
Added frame(double simulationTime) and advance(double simulationTime) parameters to
osgViewer::SimpleViewer, Vewer and CompositeViewer.
Updated various examples and Nodes to use SimulationTime where appropriate.
be individually turned on or off. Moved the OpenFlight code across to use the
new scheme, removing the old hack of using node masks to achieve the same end
result.
on osgUtil by implementing a NodeVisitor::VisitorType enum, and associated
g/setVisitorType. This allows callbacks to querry the visitor/traversal
type without doing down cast's to specific visitor subclasses such as
osgUtil::AppVisitor/CullVisitor.
