MRVoxelPath.h

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#pragma once
#include "MRMeshFwd.h"
#ifndef MRMESH_NO_OPENVDB
#include "MRMesh/MRFlagOperators.h"
#include "MRProgressCallback.h"
#include <functional>
 
namespace MR
{
 
 
using VoxelsMetric = std::function<float( size_t from, size_t to )>;
 
enum class QuarterBit : char
{
    LeftLeft = 0b1,
    LeftRight = 0b10,
    RightLeft = 0b100,
    RightRight = 0b1000,
    All = 0b1111
};
MR_MAKE_FLAG_OPERATORS( QuarterBit )
 
 
enum SlicePlane
{
    YZ, 
    ZX, 
    XY, 
    None 
};
 
struct VoxelMetricParameters
{
    size_t start; 
    size_t stop;  
    float maxDistRatio{1.5f}; 
    SlicePlane plane{None}; 
    QuarterBit quatersMask{QuarterBit::All}; 
};
 
[[nodiscard]] MRMESH_API VoxelsMetric voxelsExponentMetric( const VdbVolume& voxels, const VoxelMetricParameters& parameters,
                                                           float modifier = -1.0f );
 
[[nodiscard]] MRMESH_API VoxelsMetric voxelsSumDiffsMetric( const VdbVolume& voxels, const VoxelMetricParameters& parameters );
 
[[nodiscard]] MRMESH_API std::vector<size_t> buildSmallestMetricPath( const VdbVolume & voxels,  const VoxelsMetric & metric,
                                                                     size_t start, size_t finish, ProgressCallback cb = {} );
 
 
}
#endif