extract_vertex_attributes()

std::vector< std::pair< std::string, Kakshya::DataVariant > > MayaFlux::Nodes::Network::PhysicsOperator::extract_vertex_attributes ( ) const

overridevirtual

Adds "mass" (PhysicsState::mass) and "accreted_mass" (get_accreted_mass_span()) as named float attributes, in the same global vertex-index order get_vertex_data() produces.

Reads m_accreted_mass directly rather than calling get_accreted_mass_span(), which is non-const (it lazily seeds m_accreted_mass on first call): this override must stay const, so that method's own default of 1.0F per particle before the first sync_bonds_from_claims is replicated here instead.

Cluster/collection membership is not repeated here: a consumer already gets that from build_cluster_ids(), which this class already overrides.

Reimplemented from MayaFlux::Nodes::Network::GraphicsOperator.

Definition at line 823 of file PhysicsOperator.cpp.

{
    std::vector<float> mass;
    mass.reserve(get_point_count());
    for (const auto& group : m_collections) {
        for (const auto& state : group.physics_state) {
            mass.push_back(state.mass);
        }
    }
 
    std::vector<std::pair<std::string, Kakshya::DataVariant>> attributes;
    attributes.emplace_back("mass", std::move(mass));
 
    std::vector<float> accreted(m_accreted_mass.empty() ? get_point_count() : m_accreted_mass.size(), 1.0F);
    if (!m_accreted_mass.empty()) {
        std::copy(m_accreted_mass.begin(), m_accreted_mass.end(), accreted.begin());
    }
    attributes.emplace_back("accreted_mass", std::move(accreted));
 
    return attributes;
}

References get_point_count(), m_accreted_mass, and m_collections.

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