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abc_time_info #1678

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Jan 2, 2024
Merged

abc_time_info #1678

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25 changes: 25 additions & 0 deletions projects/Alembic/ReadAlembic.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,27 @@ static int clamp(int i, int _min, int _max) {
}
}

static void set_time_info(UserData &ud, TimeSamplingType tst, float start, int sample_count) {
float time_per_cycle = tst.getTimePerCycle();
if (tst.isUniform()) {
ud.set2("_abc_time_sampling_type", "Uniform");
}
else if (tst.isCyclic()) {
ud.set2("_abc_time_sampling_type", "Cyclic");
}
else if (tst.isAcyclic()) {
ud.set2("_abc_time_sampling_type", "Acyclic");
}
ud.set2("_abc_start_time", float(start));
ud.set2("_abc_sample_count", sample_count);
ud.set2("_abc_time_per_cycle", time_per_cycle);
if (time_per_cycle > 0) {
ud.set2("_abc_time_fps", 1.0f / time_per_cycle);
}
else {
ud.set2("_abc_time_fps", 0.0f);
}
}
static void read_velocity(std::shared_ptr<PrimitiveObject> prim, V3fArraySamplePtr marr, bool read_done) {
if (marr == nullptr) {
return;
Expand Down Expand Up @@ -331,6 +352,7 @@ static std::shared_ptr<PrimitiveObject> foundABCMesh(Alembic::AbcGeom::IPolyMesh
float time_per_cycle = time->getTimeSamplingType().getTimePerCycle();
double start = time->getStoredTimes().front();
int start_frame = (int)std::round(start / time_per_cycle );
set_time_info(prim->userData(), time->getTimeSamplingType(), start, int(mesh.getNumSamples()));

int sample_index = clamp(frameid - start_frame, 0, (int)mesh.getNumSamples() - 1);
ISampleSelector iSS = Alembic::Abc::v12::ISampleSelector((Alembic::AbcCoreAbstract::index_t)sample_index);
Expand Down Expand Up @@ -469,6 +491,7 @@ static std::shared_ptr<PrimitiveObject> foundABCSubd(Alembic::AbcGeom::ISubDSche
float time_per_cycle = time->getTimeSamplingType().getTimePerCycle();
double start = time->getStoredTimes().front();
int start_frame = (int)std::round(start / time_per_cycle );
set_time_info(prim->userData(), time->getTimeSamplingType(), start, int(subd.getNumSamples()));

int sample_index = clamp(frameid - start_frame, 0, (int)subd.getNumSamples() - 1);
ISampleSelector iSS = Alembic::Abc::v12::ISampleSelector((Alembic::AbcCoreAbstract::index_t)sample_index);
Expand Down Expand Up @@ -628,6 +651,7 @@ static std::shared_ptr<PrimitiveObject> foundABCPoints(Alembic::AbcGeom::IPoints
float time_per_cycle = time->getTimeSamplingType().getTimePerCycle();
double start = time->getStoredTimes().front();
int start_frame = (int)std::round(start / time_per_cycle );
set_time_info(prim->userData(), time->getTimeSamplingType(), start, int(mesh.getNumSamples()));

int sample_index = clamp(frameid - start_frame, 0, (int)mesh.getNumSamples() - 1);
auto iSS = Alembic::Abc::v12::ISampleSelector((Alembic::AbcCoreAbstract::index_t)sample_index);
Expand Down Expand Up @@ -665,6 +689,7 @@ static std::shared_ptr<PrimitiveObject> foundABCCurves(Alembic::AbcGeom::ICurves
float time_per_cycle = time->getTimeSamplingType().getTimePerCycle();
double start = time->getStoredTimes().front();
int start_frame = (int)std::round(start / time_per_cycle );
set_time_info(prim->userData(), time->getTimeSamplingType(), start, int(mesh.getNumSamples()));

int sample_index = clamp(frameid - start_frame, 0, (int)mesh.getNumSamples() - 1);
auto iSS = Alembic::Abc::v12::ISampleSelector((Alembic::AbcCoreAbstract::index_t)sample_index);
Expand Down
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