IECore::PathMatcher SceneGadget::convertSelection( IECore::UIntVectorDataPtr ids ) const
{
CompoundDataMap parameters = { { "selection", ids } };
if( m_selectionMask )
{
parameters["mask"] = m_selectionMask;
}
auto pathsData = static_pointer_cast<PathMatcherData>(
m_renderer->command(
"gl:querySelection",
parameters
)
);
PathMatcher result = pathsData->readable();
// Unexpanded locations are represented with
// objects named __unexpandedChildren__ to allow
// locations to have an object _and_ children.
// We want to replace any such locations with their
// parent location.
const InternedString unexpandedChildren = "__unexpandedChildren__";
vector<InternedString> parent;
PathMatcher toAdd;
PathMatcher toRemove;
for( PathMatcher::Iterator it = result.begin(), eIt = result.end(); it != eIt; ++it )
{
if( it->size() && it->back() == unexpandedChildren )
{
toRemove.addPath( *it );
parent.assign( it->begin(), it->end() - 1 );
toAdd.addPath( parent );
}
}
result.addPaths( toAdd );
result.removePaths( toRemove );
return result;
}