UsdGeomXformOp
UsdGeomXformable::AddXformOp(
UsdGeomXformOp::Type const opType,
UsdGeomXformOp::Precision const precision,
TfToken const &opSuffix,
bool isInverseOp) const
{
VtTokenArray xformOpOrder;
_GetXformOpOrderValue(&xformOpOrder);
// Check if the xformOp we're about to add already exists in xformOpOrder
TfToken opName = UsdGeomXformOp::GetOpName(opType, opSuffix, isInverseOp);
VtTokenArray::iterator it = std::find(xformOpOrder.begin(),
xformOpOrder.end(), opName);
if (it != xformOpOrder.end()) {
TF_CODING_ERROR("The xformOp '%s' already exists in xformOpOrder [%s].",
opName.GetText(), TfStringify(xformOpOrder).c_str());
return UsdGeomXformOp();
}
TfToken const &xformOpAttrName = UsdGeomXformOp::GetOpName(opType, opSuffix);
UsdGeomXformOp result;
if (UsdAttribute xformOpAttr = GetPrim().GetAttribute(xformOpAttrName)) {
// Check if the attribute's typeName has the requested precision level.
UsdGeomXformOp::Precision existingPrecision =
UsdGeomXformOp::GetPrecisionFromValueTypeName(
xformOpAttr.GetTypeName());
if (existingPrecision != precision) {
TF_CODING_ERROR("XformOp <%s> has typeName '%s' which does not "
"match the requested precision '%s'. Proceeding to "
"use existing typeName / precision.",
xformOpAttr.GetPath().GetText(),
xformOpAttr.GetTypeName().GetAsToken().GetText(),
TfEnum::GetName(precision).c_str());
}
result = UsdGeomXformOp(xformOpAttr, isInverseOp);
} else {
result = UsdGeomXformOp(GetPrim(), opType, precision, opSuffix,
isInverseOp);
}
if (result) {
xformOpOrder.push_back(result.GetOpName());
CreateXformOpOrderAttr().Set(xformOpOrder);
} else {
TF_CODING_ERROR("Unable to add xform op of type %s and precision %s on "
"prim at path <%s>. opSuffix=%s, isInverseOp=%d",
TfEnum::GetName(opType).c_str(), TfEnum::GetName(precision).c_str(),
GetPath().GetText(), opSuffix.GetText(), isInverseOp);
return UsdGeomXformOp();
}
return result;
}
static TfToken
_GetOpName(const UsdGeomXformOp &self)
{
return self.GetOpName();
}