// List logic. This is a pretty simple example that
// builds a list of mesh shapes to return.
//
MStatus viewObjectFilter::getList(MSelectionList &list)
{
bool debugFilterUsage = false;
if (debugFilterUsage)
{
unsigned int viewCount = M3dView::numberOf3dViews();
if (viewCount)
{
for (unsigned int i=0; i<viewCount; i++)
{
M3dView view;
if (MStatus::kSuccess == M3dView::get3dView( i, view ))
{
if (view.objectListFilterName() == name())
{
printf("*** Update filter list %s. Exclusion=%d, Inverted=%d\n",
name().asChar(), MObjectListFilter::kExclusionList == filterType(),
mInvertedList);
}
}
}
}
}
// Clear out old list
list.clear();
if (mInvertedList)
{
MStatus status;
MItDag::TraversalType traversalType = MItDag::kDepthFirst;
MItDag dagIterator( traversalType, MFn::kInvalid, &status);
for ( ; !dagIterator.isDone(); dagIterator.next() )
{
MDagPath dagPath;
status = dagIterator.getPath(dagPath);
if ( status != MStatus::kSuccess )
{
status.perror("MItDag::getPath");
continue;
}
if (dagPath.hasFn( MFn::kMesh ))
{
dagIterator.prune();
continue;
}
if (dagPath.childCount() <= 1)
{
status = list.add( dagPath );
}
}
}
else
{
// Get a list of all the meshes in the scene
MItDag::TraversalType traversalType = MItDag::kDepthFirst;
MFn::Type filter = MFn::kMesh;
MStatus status;
MItDag dagIterator( traversalType, filter, &status);
for ( ; !dagIterator.isDone(); dagIterator.next() )
{
MDagPath dagPath;
status = dagIterator.getPath(dagPath);
if ( status != MStatus::kSuccess )
{
status.perror("MItDag::getPath");
continue;
}
status = list.add( dagPath );
if ( status != MStatus::kSuccess )
{
status.perror("MSelectionList add");
}
}
}
if (list.length())
{
return MStatus::kSuccess;
}
return MStatus::kFailure;
}