// ----------------------------------------------------------------------
GroupElement*
CreateEstimatedEdgesTask::
group( shawn::SimulationController& sc )
throw( std::runtime_error )
{
std::string n = sc.environment().optional_string_param("group","");
if( n.empty() )
return NULL;
ElementHandle eh =
visualization_w().element_w( n );
if( eh.is_null() )
throw std::runtime_error(std::string("no such group: ")+n);
GroupElement* ge = dynamic_cast<GroupElement*>(eh.get());
if( ge == NULL )
throw std::runtime_error(std::string("element is no group: ")+n);
return ge;
}
