void
Usd_PrimData::_ComposeAndCacheFlags(Usd_PrimDataConstPtr parent,
bool isMasterPrim)
{
// Special-case the root (the only prim which has no parent) and
// instancing masters.
if (ARCH_UNLIKELY(not parent or isMasterPrim)) {
_flags[Usd_PrimActiveFlag] = true;
_flags[Usd_PrimLoadedFlag] = true;
_flags[Usd_PrimModelFlag] = true;
_flags[Usd_PrimGroupFlag] = true;
_flags[Usd_PrimAbstractFlag] = false;
_flags[Usd_PrimDefinedFlag] = true;
_flags[Usd_PrimClipsFlag] = false;
_flags[Usd_PrimInstanceFlag] = false;
_flags[Usd_PrimMasterFlag] = isMasterPrim;
}
else {
// Compose and cache 'active'.
UsdPrim self(Usd_PrimDataIPtr(this));
bool active = true;
self.GetMetadata(SdfFieldKeys->Active, &active);
_flags[Usd_PrimActiveFlag] = active;
// An active prim is loaded if it's loadable and in the load set, or
// it's not loadable and its parent is loaded.
_flags[Usd_PrimLoadedFlag] = active and
(self.HasPayload() ?
_stage->_GetPcpCache()->IsPayloadIncluded(_primIndex->GetPath()) :
parent->IsLoaded());
// According to Model hierarchy rules, only Model Groups may have Model
// children (groups or otherwise). So if our parent is not a Model
// Group, then this prim cannot be a model (or a model group).
// Otherwise we look up the kind metadata and consult the kind registry.
_flags[Usd_PrimGroupFlag] = _flags[Usd_PrimModelFlag] = false;
if (parent->IsGroup()) {
static TfToken kindToken("kind");
TfToken kind;
self.GetMetadata(kindToken, &kind);
// Use the kind registry to determine model/groupness.
if (not kind.IsEmpty()) {
_flags[Usd_PrimGroupFlag] =
KindRegistry::IsA(kind, KindTokens->group);
_flags[Usd_PrimModelFlag] = _flags[Usd_PrimGroupFlag] or
KindRegistry::IsA(kind, KindTokens->model);
}
}
// Get specifier.
SdfSpecifier specifier = GetSpecifier();
// This prim is abstract if its parent is or if it's a class.
_flags[Usd_PrimAbstractFlag] =
parent->IsAbstract() or specifier == SdfSpecifierClass;
// This prim is defined if its parent is defined and its specifier is
// defining.
const bool specifierIsDefining = SdfIsDefiningSpecifier(specifier);
_flags[Usd_PrimDefinedFlag] =
parent->IsDefined() and specifierIsDefining;
_flags[Usd_PrimHasDefiningSpecifierFlag] = specifierIsDefining;
// The presence of clips that may affect attributes on this prim
// is computed and set in UsdStage. Default to false.
_flags[Usd_PrimClipsFlag] = false;
// These flags indicate whether this prim is an instance or an
// instance master.
_flags[Usd_PrimInstanceFlag] = active and _primIndex->IsInstanceable();
_flags[Usd_PrimMasterFlag] = parent->IsInMaster();
}
}
void
Usd_PrimData::_ComposeAndCacheFlags(Usd_PrimDataConstPtr parent,
bool isMasterPrim)
{
// We do not have to clear _flags here since in the pseudo root or instance
// master case the values never change, and in the ordinary prim case we set
// every flag.
// Special-case the root (the only prim which has no parent) and
// instancing masters.
if (ARCH_UNLIKELY(!parent || isMasterPrim)) {
_flags[Usd_PrimActiveFlag] = true;
_flags[Usd_PrimLoadedFlag] = true;
_flags[Usd_PrimModelFlag] = true;
_flags[Usd_PrimGroupFlag] = true;
_flags[Usd_PrimDefinedFlag] = true;
_flags[Usd_PrimMasterFlag] = isMasterPrim;
}
else {
// Compose and cache 'active'.
UsdPrim self(Usd_PrimDataIPtr(this), SdfPath());
bool active = true;
self.GetMetadata(SdfFieldKeys->Active, &active);
_flags[Usd_PrimActiveFlag] = active;
// Cache whether or not this prim has a payload.
bool hasPayload = _primIndex->HasPayload();
_flags[Usd_PrimHasPayloadFlag] = hasPayload;
// An active prim is loaded if it's loadable and in the load set, or
// it's not loadable and its parent is loaded.
_flags[Usd_PrimLoadedFlag] = active &&
(hasPayload ?
_stage->_GetPcpCache()->IsPayloadIncluded(_primIndex->GetPath()) :
parent->IsLoaded());
// According to Model hierarchy rules, only Model Groups may have Model
// children (groups or otherwise). So if our parent is not a Model
// Group, then this prim cannot be a model (or a model group).
// Otherwise we look up the kind metadata and consult the kind registry.
bool isGroup = false, isModel = false;
if (parent->IsGroup()) {
static TfToken kindToken("kind");
TfToken kind;
self.GetMetadata(kindToken, &kind);
// Use the kind registry to determine model/groupness.
if (!kind.IsEmpty()) {
isGroup = KindRegistry::IsA(kind, KindTokens->group);
isModel = isGroup || KindRegistry::IsA(kind, KindTokens->model);
}
}
_flags[Usd_PrimGroupFlag] = isGroup;
_flags[Usd_PrimModelFlag] = isModel;
// Get specifier.
SdfSpecifier specifier = GetSpecifier();
// This prim is abstract if its parent is or if it's a class.
_flags[Usd_PrimAbstractFlag] =
parent->IsAbstract() || specifier == SdfSpecifierClass;
// Cache whether or not this prim has an authored defining specifier.
const bool isDefiningSpec = SdfIsDefiningSpecifier(specifier);
_flags[Usd_PrimHasDefiningSpecifierFlag] = isDefiningSpec;
// This prim is defined if its parent is and its specifier is defining.
_flags[Usd_PrimDefinedFlag] = isDefiningSpec && parent->IsDefined();
// The presence of clips that may affect attributes on this prim
// is computed and set in UsdStage. Default to false.
_flags[Usd_PrimClipsFlag] = false;
// These flags indicate whether this prim is an instance or an
// instance master.
_flags[Usd_PrimInstanceFlag] = active && _primIndex->IsInstanceable();
_flags[Usd_PrimMasterFlag] = parent->IsInMaster();
}
}