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ParticleArray Interface Reference

Partition particles and performs range and nearest-neighbor searches. More...

`#include <openvdb/tools/ParticleAtlas.h>`

## Detailed Description

Partition particles and performs range and nearest-neighbor searches.

Expected interface for the ParticleArray container:

template<typename VectorType>
struct ParticleArray
{
// The type used to represent world-space positions
using PosType = VectorType;
using ScalarType = typename PosType::value_type;
// Return the number of particles in the array
size_t size() const;
// Return the world-space position for the nth particle.
void getPos(size_t n, PosType& xyz) const;
// Return the world-space radius for the nth particle.
void getRadius(size_t n, ScalarType& radius) const;
};
ParticleArray
Partition particles and performs range and nearest-neighbor searches.

Constructs a collection of `PointIndexGrids` of different resolutions to accelerate spatial searches for particles with varying radius.