scale_region()

Region MayaFlux::Kakshya::scale_region	(	const Region &	region,
		const std::vector< double > &	factors
	)

Scale a Region about its center by the given factors.

Parameters

region	Region to scale.
factors	Scaling factors for each dimension.

Returns

New scaled Region.

Definition at line 86 of file RegionUtils.cpp.

{
    Region result = region;
    for (size_t i = 0; i < std::min(factors.size(), region.start_coordinates.size()); ++i) {
        uint64_t center = (region.start_coordinates[i] + region.end_coordinates[i]) / 2;
        uint64_t half_span = (region.end_coordinates[i] - region.start_coordinates[i]) / 2;
        auto new_half_span = static_cast<uint64_t>(factors[i] * static_cast<double>(half_span));
        result.start_coordinates[i] = center - new_half_span;
        result.end_coordinates[i] = center + new_half_span;
    }
    return result;
}

References MayaFlux::Kakshya::Region::end_coordinates, and MayaFlux::Kakshya::Region::start_coordinates.