GT_PrimitiveHandle GusdPrimWrapper::
defineForRead( const GusdUSD_StageProxyHandle& stage,
const UsdGeomImageable& sourcePrim,
const UsdTimeCode& time,
const GusdPurposeSet& purposes )
{
GT_PrimitiveHandle gtUsdPrimHandle;
GusdUSD_ImageableHolder::ScopedLock lock;
GusdUSD_ImageableHolder holder( sourcePrim, stage->GetLock() );
lock.Acquire( holder, /*write*/false);
UsdGeomImageable sourceImageable = *lock;
// Find the function registered for the source prim's type
// to define the prim from read and call that function.
if(sourcePrim) {
USDTypeToDefineFuncMap::const_iterator mapIt
= s_usdTypeToFuncMap.find(sourceImageable.GetPrim().GetTypeName());
if(mapIt != s_usdTypeToFuncMap.end()) {
gtUsdPrimHandle = mapIt->second(stage,sourcePrim,time,purposes);
}
}
return gtUsdPrimHandle;
}
const UsdGeomImageable
GusdScopeWrapper::getUsdPrimForRead( GusdUSD_ImageableHolder::ScopedLock &lock) const
{
// obtain first lock to get geomtry as UsdGeomScope.
GusdUSD_ScopeHolder::ScopedReadLock innerLock;
innerLock.Acquire( m_usdScopeForRead );
// Build new holder after casting to imageable
GusdUSD_ImageableHolder tmp( UsdGeomImageable( (*innerLock).GetPrim() ),
m_usdScopeForRead.GetLock() );
lock.Acquire(tmp, /*write*/false);
return *lock;
}