Hello Michael,
On 03/09/2011 07:11 AM, Michael Raab wrote:
> UInt32 numFC =
> FieldContainerFactory::the()->getFieldContainerStore()->size();
>
> // Loop over all newly created field container instances
> for(UInt32 i = this->_prevNumFC; i< numFC; ++i)
> {
> FieldContainerPtr fc = FieldContainerFactory::the()->getContainer(i);
>
> if(fc != osg::NullFC&&
> fc->getType().isDerivedFrom(osg::SHLChunk::getClassType()))
> {
> SHLChunkPtr shl = SHLChunkPtr::dcast(fc);
> if( shl != NullFC )
> {
> beginEditCP(shl);
> shl->addParameterCallback("VDTSystemTime", updateP);
> shl->addParameterCallback("VDTSystemTime", updateU);
> endEditCP(shl);
> }
>
> cout<< "Found shl chunk "<< endl;
> }
> }
>
> this->_prevNumFC = numFC;
> Am I doing something wrong?
try naming your parameters starting with "OSG", it appears the user
callbacks are moved to _osgParametersCallbacks at some point, but only
if they start with "OSG" - not sure what the reason for this is/was.
> One additional thing I have discovered. If I try to attach the callbacks to
> the very first SHLChunk I discover, I get an AccessViolation. Furthermore I
> haven't created that SHLCHunk. Is it something like a prototype? Can I
> somehow find out if its a prototype or something special?
yes, that is probably the prototype. If you can create the object that
adds the callbacks above before the first real SHLChunk is created, you
can simply init _prevNumFC when it is created to size of the container
store at creation time.
Alternatively you can access the prototype from the containers type
object, shl->getType().getPrototype(), and compare the pointers.
Cheers,
Carsten
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