within_radius()

template<typename PointT >

std::vector< QueryResult > MayaFlux::Kinesis::SpatialIndex< PointT >::within_radius	(	const PointT &	center,
		float	radius
	)		const

Find all entities within a radius of a point.

Parameters

center	Query origin.
radius	Search radius (same units as positions).

Returns

Unsorted results with squared distances. Empty if no snapshot published.

Definition at line 236 of file SpatialIndex.cpp.

{
    std::vector<QueryResult> results;
    float radius_sq = radius * radius;
 
#ifdef MAYAFLUX_PLATFORM_MACOS
    auto [snap, slot] = acquire_snapshot();
    if (!snap) {
        return results;
    }
#else
    auto snap_ptr = m_snapshot.load(std::memory_order_acquire);
    if (!snap_ptr) {
        return results;
    }
    const auto* snap = snap_ptr.get();
#endif
 
    if (m_use_grid) {
        query_grid(*snap, center, radius_sq, results);
    } else {
        query_brute(*snap, center, radius_sq, results);
    }
 
#ifdef MAYAFLUX_PLATFORM_MACOS
    release_snapshot(slot);
#endif
 
    return results;
}

References radius, and MayaFlux::Kinesis::snap().

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