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pointInstancer.cpp
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//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#include "pxr/usd/usdGeom/pointInstancer.h"
#include "pxr/usd/usd/schemaRegistry.h"
#include "pxr/usd/usd/typed.h"
#include "pxr/usd/sdf/types.h"
#include "pxr/usd/sdf/assetPath.h"
PXR_NAMESPACE_OPEN_SCOPE
// Register the schema with the TfType system.
TF_REGISTRY_FUNCTION(TfType)
{
TfType::Define<UsdGeomPointInstancer,
TfType::Bases< UsdGeomBoundable > >();
// Register the usd prim typename as an alias under UsdSchemaBase. This
// enables one to call
// TfType::Find<UsdSchemaBase>().FindDerivedByName("PointInstancer")
// to find TfType<UsdGeomPointInstancer>, which is how IsA queries are
// answered.
TfType::AddAlias<UsdSchemaBase, UsdGeomPointInstancer>("PointInstancer");
}
/* virtual */
UsdGeomPointInstancer::~UsdGeomPointInstancer()
{
}
/* static */
UsdGeomPointInstancer
UsdGeomPointInstancer::Get(const UsdStagePtr &stage, const SdfPath &path)
{
if (!stage) {
TF_CODING_ERROR("Invalid stage");
return UsdGeomPointInstancer();
}
return UsdGeomPointInstancer(stage->GetPrimAtPath(path));
}
/* static */
UsdGeomPointInstancer
UsdGeomPointInstancer::Define(
const UsdStagePtr &stage, const SdfPath &path)
{
static TfToken usdPrimTypeName("PointInstancer");
if (!stage) {
TF_CODING_ERROR("Invalid stage");
return UsdGeomPointInstancer();
}
return UsdGeomPointInstancer(
stage->DefinePrim(path, usdPrimTypeName));
}
/* virtual */
UsdSchemaType UsdGeomPointInstancer::_GetSchemaType() const {
return UsdGeomPointInstancer::schemaType;
}
/* static */
const TfType &
UsdGeomPointInstancer::_GetStaticTfType()
{
static TfType tfType = TfType::Find<UsdGeomPointInstancer>();
return tfType;
}
/* static */
bool
UsdGeomPointInstancer::_IsTypedSchema()
{
static bool isTyped = _GetStaticTfType().IsA<UsdTyped>();
return isTyped;
}
/* virtual */
const TfType &
UsdGeomPointInstancer::_GetTfType() const
{
return _GetStaticTfType();
}
UsdAttribute
UsdGeomPointInstancer::GetProtoIndicesAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->protoIndices);
}
UsdAttribute
UsdGeomPointInstancer::CreateProtoIndicesAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->protoIndices,
SdfValueTypeNames->IntArray,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetIdsAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->ids);
}
UsdAttribute
UsdGeomPointInstancer::CreateIdsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->ids,
SdfValueTypeNames->Int64Array,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetPositionsAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->positions);
}
UsdAttribute
UsdGeomPointInstancer::CreatePositionsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->positions,
SdfValueTypeNames->Point3fArray,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetOrientationsAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->orientations);
}
UsdAttribute
UsdGeomPointInstancer::CreateOrientationsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->orientations,
SdfValueTypeNames->QuathArray,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetScalesAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->scales);
}
UsdAttribute
UsdGeomPointInstancer::CreateScalesAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->scales,
SdfValueTypeNames->Float3Array,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetVelocitiesAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->velocities);
}
UsdAttribute
UsdGeomPointInstancer::CreateVelocitiesAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->velocities,
SdfValueTypeNames->Vector3fArray,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetAngularVelocitiesAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->angularVelocities);
}
UsdAttribute
UsdGeomPointInstancer::CreateAngularVelocitiesAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->angularVelocities,
SdfValueTypeNames->Vector3fArray,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdAttribute
UsdGeomPointInstancer::GetInvisibleIdsAttr() const
{
return GetPrim().GetAttribute(UsdGeomTokens->invisibleIds);
}
UsdAttribute
UsdGeomPointInstancer::CreateInvisibleIdsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
return UsdSchemaBase::_CreateAttr(UsdGeomTokens->invisibleIds,
SdfValueTypeNames->Int64Array,
/* custom = */ false,
SdfVariabilityVarying,
defaultValue,
writeSparsely);
}
UsdRelationship
UsdGeomPointInstancer::GetPrototypesRel() const
{
return GetPrim().GetRelationship(UsdGeomTokens->prototypes);
}
UsdRelationship
UsdGeomPointInstancer::CreatePrototypesRel() const
{
return GetPrim().CreateRelationship(UsdGeomTokens->prototypes,
/* custom = */ false);
}
namespace {
static inline TfTokenVector
_ConcatenateAttributeNames(const TfTokenVector& left,const TfTokenVector& right)
{
TfTokenVector result;
result.reserve(left.size() + right.size());
result.insert(result.end(), left.begin(), left.end());
result.insert(result.end(), right.begin(), right.end());
return result;
}
}
/*static*/
const TfTokenVector&
UsdGeomPointInstancer::GetSchemaAttributeNames(bool includeInherited)
{
static TfTokenVector localNames = {
UsdGeomTokens->protoIndices,
UsdGeomTokens->ids,
UsdGeomTokens->positions,
UsdGeomTokens->orientations,
UsdGeomTokens->scales,
UsdGeomTokens->velocities,
UsdGeomTokens->angularVelocities,
UsdGeomTokens->invisibleIds,
};
static TfTokenVector allNames =
_ConcatenateAttributeNames(
UsdGeomBoundable::GetSchemaAttributeNames(true),
localNames);
if (includeInherited)
return allNames;
else
return localNames;
}
PXR_NAMESPACE_CLOSE_SCOPE
// ===================================================================== //
// Feel free to add custom code below this line. It will be preserved by
// the code generator.
//
// Just remember to wrap code in the appropriate delimiters:
// 'PXR_NAMESPACE_OPEN_SCOPE', 'PXR_NAMESPACE_CLOSE_SCOPE'.
// ===================================================================== //
// --(BEGIN CUSTOM CODE)--
#include "pxr/base/tf/enum.h"
#include "pxr/base/tf/envSetting.h"
#include "pxr/base/gf/transform.h"
#include "pxr/usd/usdGeom/bboxCache.h"
#include "pxr/usd/usdGeom/debugCodes.h"
#include "pxr/usd/usdGeom/xformCache.h"
#include "pxr/usd/usdGeom/motionAPI.h"
#include "pxr/usd/usdGeom/boundableComputeExtent.h"
#include "pxr/base/work/loops.h"
#include "pxr/base/work/reduce.h"
#include "pxr/base/tf/registryManager.h"
PXR_NAMESPACE_OPEN_SCOPE
// XXX Bug 139215: When we enable this, we can remove
// SdfListOp::ComposeOperations().
TF_DEFINE_ENV_SETTING(
USDGEOM_POINTINSTANCER_NEW_APPLYOPS, true,
"Set to true to use SdfListOp::ApplyOperations() instead of "
"ComposeOperations().");
TF_REGISTRY_FUNCTION(TfEnum)
{
TF_ADD_ENUM_NAME(UsdGeomPointInstancer::IncludeProtoXform);
TF_ADD_ENUM_NAME(UsdGeomPointInstancer::ExcludeProtoXform);
TF_ADD_ENUM_NAME(UsdGeomPointInstancer::ApplyMask);
TF_ADD_ENUM_NAME(UsdGeomPointInstancer::IgnoreMask);
}
// Convert a list-op to a canonical order, treating it as an
// operation on a set rather than a list. A side effect is
// ensuring that it does not use added or ordered items,
// and can therefore be used with ApplyOperations().
template <typename T>
static SdfListOp<T>
_CanonicalizeListOp(const SdfListOp<T> &op) {
if (op.IsExplicit()) {
return op;
} else {
std::vector<T> items;
op.ApplyOperations(&items);
std::sort(items.begin(), items.end());
SdfListOp<T> r;
r.SetPrependedItems(std::vector<T>(items.begin(), items.end()));
r.SetDeletedItems(op.GetDeletedItems());
return r;
}
}
bool
UsdGeomPointInstancerApplyNewStyleListOps()
{
return TfGetEnvSetting(USDGEOM_POINTINSTANCER_NEW_APPLYOPS);
}
bool
UsdGeomPointInstancerSetOrMergeOverOp(std::vector<int64_t> const &items,
SdfListOpType op,
UsdPrim const &prim,
TfToken const &metadataName)
{
SdfInt64ListOp proposed, current;
UsdStagePtr stage = prim.GetStage();
UsdEditTarget editTarget = stage->GetEditTarget();
SdfPrimSpecHandle primSpec =
editTarget.GetPrimSpecForScenePath(prim.GetPath());
if (primSpec){
VtValue existingOp = primSpec->GetInfo(metadataName);
if (existingOp.IsHolding<SdfInt64ListOp>()){
current = existingOp.UncheckedGet<SdfInt64ListOp>();
}
}
proposed.SetItems(items, op);
if (TfGetEnvSetting(USDGEOM_POINTINSTANCER_NEW_APPLYOPS)) {
current = _CanonicalizeListOp(current);
return prim.SetMetadata(UsdGeomTokens->inactiveIds,
*proposed.ApplyOperations(current));
}
if (current.IsExplicit()){
std::vector<int64_t> explicitItems = current.GetExplicitItems();
proposed.ApplyOperations(&explicitItems);
current.SetExplicitItems(explicitItems);
}
else {
// We can't use ApplyOperations on an extant, non-explicit listOp
// because the result is always flat and explicit.
current.ComposeOperations(proposed, op);
// ComposeOperations() is too narrow in functionality - it does not
// consider that if we "remove over" an existing set of added items,
// we need to additionally ensure the removed items get removed
// from the added in current, since when applying ops, we first
// remove, then add. Bug #139215 filed to track; when it gets fixed
// we can remove this code!
if (op == SdfListOpTypeDeleted){
std::vector<int64_t> addedItems = current.GetAddedItems();
if (!addedItems.empty()){
std::set<int64_t> toRemove(items.begin(), items.end());
std::vector<int64_t> newAdded;
newAdded.reserve(addedItems.size());
for (auto elt : addedItems){
if (!toRemove.count(elt))
newAdded.push_back(elt);
}
if (newAdded.size() != addedItems.size())
current.SetAddedItems(newAdded);
}
}
else if (op == SdfListOpTypeAdded){
std::vector<int64_t> deletedItems = current.GetDeletedItems();
if (!deletedItems.empty()){
std::set<int64_t> toAdd(items.begin(), items.end());
std::vector<int64_t> newDeleted;
newDeleted.reserve(deletedItems.size());
for (auto elt : deletedItems){
if (!toAdd.count(elt))
newDeleted.push_back(elt);
}
if (newDeleted.size() != deletedItems.size())
current.SetDeletedItems(newDeleted);
}
}
}
return prim.SetMetadata(metadataName, current);
}
bool
UsdGeomPointInstancer::ActivateId(int64_t id) const
{
std::vector<int64_t> toRemove(1, id);
return UsdGeomPointInstancerSetOrMergeOverOp(
toRemove, SdfListOpTypeDeleted, GetPrim(), UsdGeomTokens->inactiveIds);
}
bool
UsdGeomPointInstancer::ActivateIds(VtInt64Array const &ids) const
{
std::vector<int64_t> toRemove(ids.begin(), ids.end());
return UsdGeomPointInstancerSetOrMergeOverOp(
toRemove, SdfListOpTypeDeleted, GetPrim(), UsdGeomTokens->inactiveIds);
}
bool
UsdGeomPointInstancer::ActivateAllIds() const
{
SdfInt64ListOp op;
op.SetExplicitItems(std::vector<int64_t>());
return GetPrim().SetMetadata(UsdGeomTokens->inactiveIds, op);
}
bool
UsdGeomPointInstancer::DeactivateId(int64_t id) const
{
std::vector<int64_t> toAdd(1, id);
return UsdGeomPointInstancerSetOrMergeOverOp(toAdd,
TfGetEnvSetting(USDGEOM_POINTINSTANCER_NEW_APPLYOPS) ?
SdfListOpTypeAppended : SdfListOpTypeAdded, GetPrim(),
UsdGeomTokens->inactiveIds);
}
bool
UsdGeomPointInstancer::DeactivateIds(VtInt64Array const &ids) const
{
std::vector<int64_t> toAdd(ids.begin(), ids.end());
return UsdGeomPointInstancerSetOrMergeOverOp(toAdd,
TfGetEnvSetting(USDGEOM_POINTINSTANCER_NEW_APPLYOPS) ?
SdfListOpTypeAppended : SdfListOpTypeAdded, GetPrim(),
UsdGeomTokens->inactiveIds);
}
bool
UsdGeomPointInstancer::VisId(int64_t id, UsdTimeCode const &time) const
{
VtInt64Array ids(1);
ids.push_back(id);
return VisIds(ids, time);
}
bool
UsdGeomPointInstancer::VisIds(VtInt64Array const &ids, UsdTimeCode const &time) const
{
VtInt64Array invised;
if (!GetInvisibleIdsAttr().Get(&invised, time))
return true;
std::set<int64_t> invisSet(invised.begin(), invised.end());
size_t numRemoved = 0;
for (int64_t id : ids){
numRemoved += invisSet.erase(id);
}
if (numRemoved){
invised.clear();
invised.reserve(invisSet.size());
for ( int64_t id : invisSet )
invised.push_back(id);
}
return CreateInvisibleIdsAttr().Set(invised, time);
}
bool
UsdGeomPointInstancer::VisAllIds(UsdTimeCode const &time) const
{
VtInt64Array invised(0);
if (GetInvisibleIdsAttr().HasAuthoredValue())
// We _could_ just block the attr instead. Better?
return CreateInvisibleIdsAttr().Set(invised, time);
return true;
}
bool
UsdGeomPointInstancer::InvisId(int64_t id, UsdTimeCode const &time) const
{
VtInt64Array ids(1);
ids.push_back(id);
return InvisIds(ids, time);
}
bool
UsdGeomPointInstancer::InvisIds(VtInt64Array const &ids, UsdTimeCode const &time) const
{
VtInt64Array invised;
if (!GetInvisibleIdsAttr().Get(&invised, time))
return true;
std::set<int64_t> invisSet(invised.begin(), invised.end());
for (int64_t id : ids){
if (invisSet.find(id) == invisSet.end())
invised.push_back(id);
}
return CreateInvisibleIdsAttr().Set(invised, time);
}
std::vector<bool>
UsdGeomPointInstancer::ComputeMaskAtTime(UsdTimeCode time,
VtInt64Array const *ids) const
{
VtInt64Array idVals, invisedIds;
std::vector<bool> mask;
SdfInt64ListOp inactiveIdsListOp;
// XXX Note we could be doing all three fetches in parallel
GetPrim().GetMetadata(UsdGeomTokens->inactiveIds, &inactiveIdsListOp);
std::vector<int64_t> inactiveIds = inactiveIdsListOp.GetExplicitItems();
GetInvisibleIdsAttr().Get(&invisedIds, time);
if (inactiveIds.size() > 0 || invisedIds.size() > 0){
bool anyPruned = false;
std::set<int64_t> maskedIds(inactiveIds.begin(), inactiveIds.end());
maskedIds.insert(invisedIds.begin(), invisedIds.end());
if (!ids){
if (GetIdsAttr().Get(&idVals, time)){
ids = &idVals;
}
if (!ids){
VtIntArray protoIndices;
if (!GetProtoIndicesAttr().Get(&protoIndices, time)){
// not a functional PointInstancer... just return
// trivial pass
return mask;
}
size_t numInstances = protoIndices.size();
idVals.reserve(numInstances);
for (size_t i = 0; i < numInstances; ++i) {
idVals.push_back(i);
}
ids = &idVals;
}
}
mask.reserve(ids->size());
for (int64_t id : *ids){
bool pruned = (maskedIds.find(id) != maskedIds.end());
anyPruned = anyPruned || pruned;
mask.push_back(!pruned);
}
if (!anyPruned){
mask.resize(0);
}
}
return mask;
}
// Get the authored data of an attribute at the lower bracketing timesample of a
// given base time. Fails if the attribute is not authored. If baseTime is
// UsdTimeCode.Default() or the attribute has no time samples, the attribute is
// sampled at the UsdTimeCode.Default().
template<class T>
static bool
_GetAttrForInstanceTransforms(
const UsdAttribute& attr,
UsdTimeCode baseTime,
UsdTimeCode* attrSampleTime,
bool* attrHasSamples,
T* attrData)
{
if (baseTime.IsNumeric()) {
double sampleTimeValue;
double upperTimeValue;
bool hasSamples;
if (!attr.GetBracketingTimeSamples(
baseTime.GetValue(),
&sampleTimeValue,
&upperTimeValue,
&hasSamples)) {
return false;
}
UsdTimeCode sampleTime = UsdTimeCode::Default();
if (hasSamples) {
sampleTime = UsdTimeCode(sampleTimeValue);
}
if (!attr.Get(attrData, sampleTime)) {
return false;
}
*attrSampleTime = sampleTime;
*attrHasSamples = hasSamples;
} else {
// baseTime is UsdTimeCode.Default()
if (!attr.Get(attrData, baseTime)) {
return false;
}
*attrSampleTime = baseTime;
*attrHasSamples = false;
}
return true;
}
bool
UsdGeomPointInstancer::_GetProtoIndicesForInstanceTransforms(
UsdTimeCode baseTime,
VtIntArray* protoIndices) const
{
UsdTimeCode sampleTime;
bool hasSamples;
if (!_GetAttrForInstanceTransforms<VtIntArray>(
GetProtoIndicesAttr(),
baseTime,
&sampleTime,
&hasSamples,
protoIndices)) {
// We don't TF_WARN here because computing transforms on an empty
// PointInstancer should return an empty result without error.
return false;
}
return true;
}
bool
UsdGeomPointInstancer::_GetPositionsForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
UsdTimeCode* positionsSampleTime,
bool* positionsHasSamples,
VtVec3fArray* positions) const
{
UsdTimeCode sampleTime;
bool hasSamples;
VtVec3fArray positionData;
if (!_GetAttrForInstanceTransforms<VtVec3fArray>(
GetPositionsAttr(),
baseTime,
&sampleTime,
&hasSamples,
&positionData)) {
TF_WARN("%s -- no positions", GetPrim().GetPath().GetText());
return false;
}
if (positionData.size() != numInstances) {
TF_WARN("%s -- found [%zu] positions, but expected [%zu]",
GetPrim().GetPath().GetText(),
positionData.size(),
numInstances);
return false;
}
*positionsSampleTime = sampleTime;
*positionsHasSamples = hasSamples;
*positions = positionData;
return true;
}
bool
UsdGeomPointInstancer::_GetVelocitiesForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
UsdTimeCode positionsSampleTime,
UsdTimeCode* velocitiesSampleTime,
VtVec3fArray* velocities) const
{
UsdTimeCode sampleTime;
bool hasSamples;
VtVec3fArray velocityData;
if (!_GetAttrForInstanceTransforms<VtVec3fArray>(
GetVelocitiesAttr(),
baseTime,
&sampleTime,
&hasSamples,
&velocityData)) {
return false;
}
if (!hasSamples || !GfIsClose(
sampleTime.GetValue(),
positionsSampleTime.GetValue(),
std::numeric_limits<double>::epsilon())) {
TF_WARN("%s -- velocity samples are not aligned with position samples",
GetPrim().GetPath().GetText());
return false;
}
if (velocityData.size() != numInstances) {
TF_WARN("%s -- found [%zu] velocities, but expected [%zu]",
GetPrim().GetPath().GetText(),
velocityData.size(),
numInstances);
return false;
}
*velocitiesSampleTime = sampleTime;
*velocities = velocityData;
return true;
}
bool
UsdGeomPointInstancer::_GetPositionsAndVelocitiesForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
VtVec3fArray* positions,
VtVec3fArray* velocities,
UsdTimeCode* velocitiesSampleTime) const
{
UsdTimeCode positionsSampleTime;
bool positionsHasSamples;
if (!_GetPositionsForInstanceTransforms(
baseTime,
numInstances,
&positionsSampleTime,
&positionsHasSamples,
positions)) {
return false;
}
if (!positionsHasSamples || !_GetVelocitiesForInstanceTransforms(
baseTime,
numInstances,
positionsSampleTime,
velocitiesSampleTime,
velocities)) {
velocities->clear();
}
return true;
}
bool
UsdGeomPointInstancer::_GetScalesForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
VtVec3fArray* scales) const
{
UsdTimeCode scalesSampleTime;
bool scalesHasSamples;
VtVec3fArray scaleData;
if (!_GetAttrForInstanceTransforms<VtVec3fArray>(
GetScalesAttr(),
baseTime,
&scalesSampleTime,
&scalesHasSamples,
&scaleData)) {
return false;
}
if (scaleData.size() != numInstances) {
TF_WARN("%s -- found [%zu] scales, but expected [%zu]",
GetPrim().GetPath().GetText(),
scaleData.size(),
numInstances);
return false;
}
*scales = scaleData;
return true;
}
bool
UsdGeomPointInstancer::_GetOrientationsForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
UsdTimeCode* orientationsSampleTime,
bool* orientationsHasSamples,
VtQuathArray* orientations) const
{
UsdTimeCode sampleTime;
bool hasSamples;
VtQuathArray orientationData;
if (!_GetAttrForInstanceTransforms<VtQuathArray>(
GetOrientationsAttr(),
baseTime,
&sampleTime,
&hasSamples,
&orientationData)) {
return false;
}
if (orientationData.size() != numInstances) {
TF_WARN("%s -- found [%zu] orientations, but expected [%zu]",
GetPrim().GetPath().GetText(),
orientationData.size(),
numInstances);
return false;
}
*orientationsSampleTime = sampleTime;
*orientationsHasSamples = hasSamples;
*orientations = orientationData;
return true;
}
bool
UsdGeomPointInstancer::_GetAngularVelocitiesForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
UsdTimeCode orientationsSampleTime,
UsdTimeCode* angularVelocitiesSampleTime,
VtVec3fArray* angularVelocities) const
{
UsdTimeCode sampleTime;
bool hasSamples;
VtVec3fArray angularVelocityData;
if (!_GetAttrForInstanceTransforms<VtVec3fArray>(
GetAngularVelocitiesAttr(),
baseTime,
&sampleTime,
&hasSamples,
&angularVelocityData)) {
return false;
}
if (!hasSamples || !GfIsClose(
sampleTime.GetValue(),
orientationsSampleTime.GetValue(),
std::numeric_limits<double>::epsilon())) {
TF_WARN(
"%s -- angular velocity samples are not aligned with orientation samples",
GetPrim().GetPath().GetText());
return false;
}
if (angularVelocityData.size() != numInstances) {
TF_WARN(
"%s -- found [%zu] angular velocities, but expected [%zu]",
GetPrim().GetPath().GetText(),
angularVelocityData.size(),
numInstances);
return false;
}
*angularVelocitiesSampleTime = sampleTime;
*angularVelocities = angularVelocityData;
return true;
}
bool
UsdGeomPointInstancer::_GetOrientationsAndAngularVelocitiesForInstanceTransforms(
UsdTimeCode baseTime,
size_t numInstances,
VtQuathArray* orientations,
VtVec3fArray* angularVelocities,
UsdTimeCode* angularVelocitiesSampleTime) const
{
UsdTimeCode orientationsSampleTime;
bool orientationsHasSamples;
if (!_GetOrientationsForInstanceTransforms(
baseTime,
numInstances,
&orientationsSampleTime,
&orientationsHasSamples,
orientations)) {
return false;
}
if (!orientationsHasSamples || !_GetAngularVelocitiesForInstanceTransforms(
baseTime,
numInstances,
orientationsSampleTime,
angularVelocitiesSampleTime,
angularVelocities)) {
angularVelocities->clear();
}
return true;
}
bool
UsdGeomPointInstancer::_GetPrototypePathsForInstanceTransforms(
const VtIntArray& protoIndices,
SdfPathVector* protoPaths) const
{
SdfPathVector protoPathData;
if (!GetPrototypesRel().GetTargets(&protoPathData) || protoPathData.empty()) {
TF_WARN("%s -- no prototypes",
GetPrim().GetPath().GetText());
return false;
}
for (const auto& protoIndex : protoIndices) {
if (protoIndex < 0
|| static_cast<size_t>(protoIndex) >= protoPathData.size()) {
TF_WARN("%s -- invalid prototype index: %d. Should be in [0, %zu)",
GetPrim().GetPath().GetText(),
protoIndex,
protoPathData.size());
return false;
}
}
*protoPaths = protoPathData;
return true;
}
bool
UsdGeomPointInstancer::_ComputeInstanceTransformsAtTimePreamble(
const UsdTimeCode baseTime,
const ProtoXformInclusion doProtoXforms,
const MaskApplication applyMask,
VtIntArray* protoIndices,
VtVec3fArray* positions,
VtVec3fArray* velocities,
UsdTimeCode* velocitiesSampleTime,
VtVec3fArray* scales,
VtQuathArray* orientations,
VtVec3fArray* angularVelocities,
UsdTimeCode* angularVelocitiesSampleTime,
SdfPathVector* protoPaths,
std::vector<bool>* mask,
float* velocityScale) const
{
TRACE_FUNCTION();
if (!_GetProtoIndicesForInstanceTransforms(
baseTime,
protoIndices)) {
return false;
}
// We determine the number of instances from the number of prototype
// indices. All other data (positions, velocities, orientations, etc.) is
// invalid if it does not conform to this count.
size_t numInstances = protoIndices->size();
if (numInstances == 0) {
return true;
}
if (!_GetPositionsAndVelocitiesForInstanceTransforms(
baseTime,
numInstances,
positions,
velocities,
velocitiesSampleTime)) {
return false;
}
// We don't currently support an attribute which linearly changes the
// scale (as velocity does for position). Instead, we lock the scale to
// the last authored value without performing any interpolation.
_GetScalesForInstanceTransforms(
baseTime,
numInstances,
scales);
_GetOrientationsAndAngularVelocitiesForInstanceTransforms(