add_collection()

void MayaFlux::Nodes::Network::PhysicsOperator::add_collection	(	const std::vector< PointVertex > &	vertices,
		float	mass_multiplier = 1.0F
	)

Add a single physics collection.

Parameters

vertices	PointVertex array with position, color, size
mass_multiplier	Mass multiplier for all particles in this collection

Definition at line 55 of file PhysicsOperator.cpp.

{
    if (vertices.empty()) {
        MF_WARN(Journal::Component::Nodes, Journal::Context::NodeProcessing,
            "Cannot add collection with zero vertices");
        return;
    }
 
    CollectionGroup group;
    group.collection = std::make_shared<GpuSync::PointCollectionNode>();
 
    group.physics_state.resize(vertices.size());
 
    for (size_t i = 0; i < vertices.size(); ++i) {
        group.physics_state[i] = PhysicsState {
            .velocity = glm::vec3(0.0F),
            .force = glm::vec3(0.0F),
            .mass = mass_multiplier
        };
    }
 
    group.collection->set_points(vertices);
    group.collection->compute_frame();
 
    uint32_t expected = 0;
    while (!m_access_token.compare_exchange_weak(expected, 1,
        std::memory_order_acquire, std::memory_order_relaxed)) {
        if (m_shutdown.load(std::memory_order_relaxed))
            return;
        expected = 0;
    }
 
    m_collections.push_back(std::move(group));
 
    m_access_token.store(0, std::memory_order_release);
 
    MF_DEBUG(Journal::Component::Nodes, Journal::Context::NodeProcessing,
        "Added collection #{} with {} points (mass_mult={:.2f})",
        m_collections.size(), vertices.size(), mass_multiplier);
}

References MayaFlux::Nodes::Network::PhysicsOperator::CollectionGroup::collection, m_access_token, m_collections, m_shutdown, MF_DEBUG, MF_WARN, MayaFlux::Journal::NodeProcessing, MayaFlux::Journal::Nodes, MayaFlux::Nodes::Network::PhysicsOperator::CollectionGroup::physics_state, and MayaFlux::Nodes::Network::PhysicsState::velocity.

Referenced by initialize(), and initialize_collections().

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