evaluate()

double MayaFlux::Nodes::Network::Source::evaluate ( ) const

inline

Current value.

Returns

The constant, the node's last output, the network index's output, or the callable's result. Zero for an empty node, a network index the network has no value for, or an empty callable.

Definition at line 70 of file RelationOperators.hpp.

    {
        if (const auto* constant = std::get_if<double>(&m_value)) {
            return *constant;
        }
        if (const auto* node = std::get_if<std::shared_ptr<Node>>(&m_value)) {
            return *node ? (*node)->get_last_output() : 0.0;
        }
        if (const auto* index = std::get_if<NetworkIndex>(&m_value)) {
            return index->network ? index->network->get_node_output(index->index).value_or(0.0) : 0.0;
        }
        const auto& function = std::get<Function>(m_value);
        return function ? function() : 0.0;
    }

References index, and m_value.