regions_intersect()

bool MayaFlux::Kakshya::regions_intersect ( const Region &  r1, const Region &  r2  )

noexcept

Test whether two N-dimensional regions overlap on every shared axis.

Regions are treated as closed intervals. Only axes present in both regions are tested; regions with fewer than 2 coordinates on either side are never considered intersecting.

Parameters

r1	First region.
r2	Second region.

Returns

true if all shared axes of r1 and r2 overlap.

Definition at line 415 of file RegionUtils.cpp.

{
    const size_t ndim = std::min({ r1.start_coordinates.size(),
        r1.end_coordinates.size(),
        r2.start_coordinates.size(),
        r2.end_coordinates.size() });
    if (ndim < 2)
        return false;
 
    for (size_t i = 0; i < ndim; ++i) {
        if (r1.end_coordinates[i] < r2.start_coordinates[i]
            || r2.end_coordinates[i] < r1.start_coordinates[i])
            return false;
    }
    return true;
}

References regions_intersect().

Referenced by MayaFlux::Kakshya::WindowContainer::get_region_data(), and regions_intersect().

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