get_region_data()

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

overridevirtual

Get data for a specific region.

Parameters

region

The region to extract data from

Returns

Vector containing the region's data

Implements MayaFlux::Kakshya::NDDataContainer< DataVariant >.

Definition at line 690 of file TextureContainer.cpp.

{
    if (m_data.empty())
        return {};
 
    const size_t layer = (m_data.size() > 1 && !region.start_coordinates.empty())
        ? static_cast<size_t>(region.start_coordinates[0])
        : 0;
 
    if (layer >= m_data.size())
        return {};
 
    ensure_cpu(static_cast<uint32_t>(layer));
 
    std::optional<std::vector<DataVariant>> result;
    seqlock_read_void(m_slot_locks[layer], 8, [&] {
        result = std::visit(
            [&](const auto& vec) -> std::vector<DataVariant> {
                using T = typename std::decay_t<decltype(vec)>::value_type;
                if constexpr (std::is_same_v<T, uint8_t>
                    || std::is_same_v<T, uint16_t>
                    || std::is_same_v<T, float>) {
                    auto extracted = extract_region_data<T>(
                        std::span<const T>(vec.data(), vec.size()),
                        region,
                        m_structure.dimensions);
                    return { DataVariant(std::move(extracted)) };
                } else {
                    return {};
                }
            },
            m_data[layer]);
    });
    return result.value_or(std::vector<DataVariant> {});
}

References MayaFlux::Kakshya::ContainerDataStructure::dimensions, ensure_cpu(), m_data, m_slot_locks, m_structure, and MayaFlux::Kakshya::Region::start_coordinates.

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