get_data_at()

void * MayaFlux::Nodes::Network::PathOperator::get_data_at ( size_t  global_index )

overrideprotectedvirtual

Get mutable access to point at global index.

Returns

Pointer to vertex data, or nullptr if index invalid

Subclasses must implement to provide per-point access

Implements MayaFlux::Nodes::Network::GraphicsOperator.

Definition at line 343 of file PathOperator.cpp.

{
    size_t offset = 0;
    for (auto& group : m_paths) {
        const auto& vertices = group->get_all_vertices();
        if (global_index < offset + vertices.size()) {
            size_t local_index = global_index - offset;
            return const_cast<LineVertex*>(&vertices[local_index]);
        }
        offset += vertices.size();
    }
    return nullptr;
}

References m_paths, and offset.