M
hello,
so you want to retrieve the positions of particles (from particles object or TP) ?
About Thinking Particles you have information here, don't forget to use InitThinkingParticles before using it.
For Particles Object you have this page and this is pretty straight forward.
For example :
// Retrieves Particles Object
BaseObject *selObj = doc->GetActiveObject();
if (selObj == nullptr || !selObj->IsInstanceOf(Oparticle))
{
MessageDialog("Need to select a particle object"_s);
return maxon::OK;
}
// cast object to ParticleObject
ParticleObject* partObj = static_cast<ParticleObject*>(selObj);
if (partObj == nullptr)
return maxon::NullptrError(MAXON_SOURCE_LOCATION);
const maxon::Int32 cnt = partObj->GetParticleCount();
// Retrieves the particle tag that is invisible.
ParticleTag* partTag = static_cast<ParticleTag*>(partObj->GetTag(Tparticle));
for (maxon::Int32 i = 0; i < cnt; i++)
{
const Particle* myParticle = partObj->GetParticleR(partTag, i );
// Check particle's age before output position
if (myParticle->t > 0)
DiagnosticOutput("particle position @ have age @", myParticle->off, myParticle->t);
}
// Creates particles in TP
// Retrieves the TP Master
BaseSceneHook* hook = doc->FindSceneHook(ID_THINKINGPARTICLES);
if (hook == nullptr || hook->GetType() != ID_THINKINGPARTICLES)
return maxon::NullptrError(MAXON_SOURCE_LOCATION);
TP_MasterSystem* tpmaster = static_cast<TP_MasterSystem*>(hook);
if (tpmaster == nullptr)
return maxon::NullptrError(MAXON_SOURCE_LOCATION);
// Alloc 10 particles
maxon::Int32 ids[10];
if (tpmaster->AllocParticles(10, ids) == NOTOK)
return maxon::OutOfMemoryError(MAXON_SOURCE_LOCATION);
// Changes position of particles and retrieves it to output it.
for (auto pid : ids)
{
tpmaster->SetPosition(pid, Vector(pid * 50));
Vector pos = tpmaster->Position(pid);
DiagnosticOutput("position of particle @ is @", pid, pos);
}
EventAdd();
Cheers,
Manuel
