set_or_update_region_data() [1/3]

template<typename T >

void MayaFlux::Kakshya::set_or_update_region_data	(	std::span< T >	dest_data,
		std::span< const T >	source_data,
		const Region &	region,
		const std::vector< DataDimension > &	dimensions
	)

Write or update a region of data in a flat data span (interleaved).

Template Parameters

T	Data type.

Parameters

dest_data	Destination data span (to be updated).
source_data	Source data span (to write from).
region	Region to update.
dimensions	Dimension descriptors.

Definition at line 331 of file RegionUtils.hpp.

{
    std::vector<uint64_t> current = region.start_coordinates;
    size_t source_index = 0;
    while (source_index < source_data.size()) {
        uint64_t linear_index = coordinates_to_linear(current, dimensions);
        dest_data[linear_index] = source_data[source_index++];
        bool done = true;
        /* for (size_t dim = 0; dim < current.size(); ++dim) {
            if (current[dim] < region.end_coordinates[dim]) {
                current[dim]++;
                done = false;
                break;
            }
            current[dim] = region.start_coordinates[dim];
        } */
        for (int dim = static_cast<int>(current.size()) - 1; dim >= 0; --dim) {
            if (current[dim] < region.end_coordinates[dim]) {
                current[dim]++;
                done = false;
                break;
            }
            current[dim] = region.start_coordinates[dim];
        }
 
        if (done)
            break;
    }
}

References coordinates_to_linear(), MayaFlux::Kakshya::Region::end_coordinates, and MayaFlux::Kakshya::Region::start_coordinates.

Referenced by set_or_update_region_data(), and set_or_update_region_data().

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