MStatus OpHolder<B>::compute( const MPlug &plug, MDataBlock &block )
{
IECore::OpPtr op = getOp();
if (op)
{
MFnDependencyNode fnDN( B::thisMObject() );
MPlug resultPlug( B::thisMObject(), fnDN.attribute( "result" ) );
if (plug != resultPlug)
{
return MS::kUnknownParameter;
}
IECore::ObjectPtr result;
try
{
ParameterisedHolder<B>::setParameterisedValues( true /* lazy */ );
result = op->operate();
if (!result)
{
return MS::kFailure;
}
}
catch( std::exception &e )
{
MGlobal::displayError( e.what() );
return MS::kFailure;
}
catch( boost::python::error_already_set & )
{
IECorePython::ScopedGILLock lock;
PyErr_Print();
return MS::kFailure;
}
catch (...)
{
return MS::kFailure;
}
assert( result );
MStatus s = ParameterHandler::setValue( op->resultParameter(), resultPlug );
block.setClean( resultPlug );
return s;
}
return MS::kFailure;
}
/// Cook the SOP! This method does all the work
OP_ERROR SOP_OpHolder::cookMySop( OP_Context &context )
{
IECore::MessageHandler::Scope handlerScope( getMessageHandler() );
// some defaults and useful variables
Imath::Box3f bbox( Imath::V3f(-1,-1,-1), Imath::V3f(1,1,1) );
float now = context.getTime();
// force eval of our nodes parameters with our hidden parameter expression
evalInt( "__evaluateParameters", 0, now );
// get our op
IECore::OpPtr op = IECore::runTimeCast<IECore::Op>( getParameterised() );
// check for a valid parameterised on this SOP
if ( !op )
{
UT_String msg( "Op Holder has no parameterised class to operate on!" );
addError( SOP_MESSAGE, msg );
return error();
}
if( lockInputs(context)>=UT_ERROR_ABORT )
{
return error();
}
// start our work
UT_Interrupt *boss = UTgetInterrupt();
boss->opStart("Building OpHolder Geometry...");
gdp->clearAndDestroy();
setParameterisedValues( now );
try
{
// make our Cortex op do it's thing...
op->operate();
// pass ourselves onto the GR_Cortex render hook
IECoreHoudini::NodePassData data( this, IECoreHoudini::NodePassData::CORTEX_OPHOLDER );
GA_RWAttributeRef attrRef = gdp->createAttribute( GA_ATTRIB_DETAIL, GA_SCOPE_PRIVATE, "IECoreHoudiniNodePassData", NULL, NULL, "blinddata" );
GA_Attribute *attr = attrRef.getAttribute();
const GA_AIFBlindData *blindData = attr->getAIFBlindData();
blindData->setDataSize( attr, sizeof(IECoreHoudini::NodePassData), &data );
// if our result is a visible renderable then set our bounds on our output gdp
const IECore::Object *result = op->resultParameter()->getValue();
IECore::ConstVisibleRenderablePtr renderable = IECore::runTimeCast<const IECore::VisibleRenderable>( result );
if ( renderable )
{
Imath::Box3f bbox = renderable->bound();
gdp->cube( bbox.min.x, bbox.max.x, bbox.min.y, bbox.max.y, bbox.min.z, bbox.max.z, 0, 0, 0, 1, 1 );
}
}
catch( boost::python::error_already_set )
{
addError( SOP_MESSAGE, "Error raised during Python evaluation!" );
IECorePython::ScopedGILLock lock;
PyErr_Print();
}
catch( const IECore::Exception &e )
{
addError( SOP_MESSAGE, e.what() );
}
catch( const std::exception &e )
{
addError( SOP_MESSAGE, e.what() );
}
catch( ... )
{
addError( SOP_MESSAGE, "Caught unknown exception!" );
}
// tidy up & go home!
boss->opEnd();
unlockInputs();
return error();
}