get_region_data()

std::vector< DataVariant > MayaFlux::Kakshya::WindowContainer::get_region_data ( const Region &  region ) const

overridevirtual

Extract data for all regions across all region groups that spatially intersect region.

Crops from the last full-surface readback — no GPU work. Returns empty if no readback has been performed yet.

Implements MayaFlux::Kakshya::NDDataContainer.

Definition at line 153 of file WindowContainer.cpp.

{
    std::vector<DataVariant> result;
 
    seqlock_read_void(m_data_lock, 8, [&] {
        if (m_processed_data.empty())
            return;
        const auto* src = std::get_if<std::vector<uint8_t>>(&m_processed_data[0]);
        if (!src || src->empty())
            return;
 
        const std::span<const uint8_t> src_span { src->data(), src->size() };
        const auto& dims = m_structure.dimensions;
 
        for (const auto& [name, group] : m_region_groups) {
            for (const auto& r : group.regions) {
                if (!regions_intersect(r, region))
                    continue;
                try {
                    result.emplace_back(extract_nd_region<uint8_t>(src_span, r, dims));
                } catch (const std::exception& e) {
                    MF_WARN(Journal::Component::Kakshya, Journal::Context::ContainerProcessing,
                        "WindowContainer::get_region_data extraction failed : {}", e.what());
                }
            }
        }
    });
    return result;
}

References MayaFlux::Journal::ContainerProcessing, MayaFlux::Kakshya::ContainerDataStructure::dimensions, MayaFlux::Journal::Kakshya, m_data_lock, m_processed_data, m_region_groups, m_structure, MF_WARN, and MayaFlux::Kakshya::regions_intersect().

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