bool
GusdUSD_StageProxy::MultiAccessor::_GetPrims(
const UT_Array<SdfPath>& primPaths,
UT_Array<UsdPrim>& prims,
GusdUT_ErrorContext* err)
{
if(!_Load(primPaths))
return false;
prims.setSize(primPaths.size());
std::atomic_bool workerInterrupt(false);
UTparallelFor(UT_BlockedRange<size_t>(0, primPaths.size()),
_GetPrimsFn(*this, primPaths, prims, err, workerInterrupt));
return !UTgetInterrupt()->opInterrupt() && !workerInterrupt;
}
OP_ERROR
GusdSOP_usdimport::_CreateNewPrims(OP_Context& ctx,
const GusdUSD_Traverse* traverse,
GusdUT_ErrorContext& err)
{
fpreal t = ctx.getTime();
UT_String file, primPath;
evalString(file, "import_file", 0, t);
evalString(primPath, "import_primpath", 0, t);
if(!file.isstring() || !primPath.isstring()) {
// Nothing to do.
return UT_ERROR_NONE;
}
/* The prim path may be a list of prims.
Additionally, those prim paths may include variants
(eg., /some/model{variant=sel}/subscope ).
Including multiple variants may mean that we need to access
multiple stages.
Resolve the actual set of prims and variants first.*/
UT_Array<SdfPath> primPaths, variants;
if(!GusdUSD_Utils::GetPrimAndVariantPathsFromPathList(
primPath, primPaths, variants, &err))
return err();
GusdDefaultArray<UT_StringHolder> filePaths;
filePaths.SetConstant(file);
// Get stage edits applying any of our variants.
GusdDefaultArray<GusdStageEditPtr> edits;
edits.GetArray().setSize(variants.size());
for(exint i = 0; i < variants.size(); ++i) {
if(!variants(i).IsEmpty()) {
GusdStageBasicEdit* edit = new GusdStageBasicEdit;
edit->GetVariants().append(variants(i));
edits.GetArray()(i).reset(edit);
}
}
// Load the root prims.
UT_Array<UsdPrim> rootPrims;
{
rootPrims.setSize(primPaths.size());
GusdStageCacheReader cache;
if(!cache.GetPrims(filePaths, primPaths, edits,
rootPrims.data(),
GusdStageOpts::LoadAll(), &err))
return err();
}
GusdDefaultArray<UsdTimeCode> times;
times.SetConstant(evalFloat("import_time", 0, t));
UT_String purpose;
evalString(purpose, "purpose", 0, t);
GusdDefaultArray<GusdPurposeSet> purposes;
purposes.SetConstant(GusdPurposeSet(
GusdPurposeSetFromMask(purpose)|
GUSD_PURPOSE_DEFAULT));
UT_Array<UsdPrim> prims;
if(traverse) {
// Before traversal, make a copy of the variants list.
const UT_Array<SdfPath> variantsPreTraverse(variants);
UT_Array<GusdUSD_Traverse::PrimIndexPair> primIndexPairs;
UT_UniquePtr<GusdUSD_Traverse::Opts> opts(traverse->CreateOpts());
if(opts) {
if(!opts->Configure(*this, t))
return err();
}
if(!traverse->FindPrims(rootPrims, times, purposes, primIndexPairs,
/*skip root*/ false, opts.get())) {
return err();
}
// Resize the prims and variants lists to match the size of
// primIndexPairs.
exint size = primIndexPairs.size();
prims.setSize(size);
variants.setSize(size);
// Now iterate through primIndexPairs to populate the prims
// and variants lists.
for (exint i = 0; i < size; i++) {
prims(i) = primIndexPairs(i).first;
exint index = primIndexPairs(i).second;
variants(i) = index < variantsPreTraverse.size() ?
variantsPreTraverse(index) : SdfPath();
}
} else {
std::swap(prims, rootPrims);
}
/* Have the resolved set of USD prims.
Now create prims or points on the detail.*/
bool packedPrims = !evalInt("import_class", 0, t);
if(packedPrims) {
UT_String vpLOD;
evalString(vpLOD, "viewportlod", 0, t);
GusdDefaultArray<UT_StringHolder> lods;
lods.SetConstant(vpLOD);
GusdGU_USD::AppendPackedPrims(*gdp, prims, variants,
times, lods, purposes, &err);
} else {
GusdGU_USD::AppendRefPoints(*gdp, prims, GUSD_PATH_ATTR,
GUSD_PRIMPATH_ATTR, &err);
}
return err();
}