MRMesh/MROffset.h

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#pragma once
#include "MRMeshFwd.h"
#include "MRMeshPart.h"
#include "MRSignDetectionMode.h"
#include "MRProgressCallback.h"
#include "MRExpected.h"
#include <optional>
#include <string>
 
namespace MR
{
 
struct BaseShellParameters
{
    float voxelSize = 0;
 
    ProgressCallback callBack;
};
 
[[nodiscard]] MRMESH_API float suggestVoxelSize( const MeshPart & mp, float approxNumVoxels );
 
struct OffsetParameters : BaseShellParameters
{
    SignDetectionMode signDetectionMode = SignDetectionMode::OpenVDB;
 
    float windingNumberThreshold = 0.5f;
 
    float windingNumberBeta = 2;
 
    std::shared_ptr<IFastWindingNumber> fwn;
 
    bool memoryEfficient = true;
};
 
struct SharpOffsetParameters : OffsetParameters
{
    UndirectedEdgeBitSet* outSharpEdges = nullptr;
    float minNewVertDev = 1.0f / 25;
    float maxNewRank2VertDev = 5;
    float maxNewRank3VertDev = 2;
    float maxOldVertPosCorrection = 0.5f;
};
 
#ifndef MRMESH_NO_OPENVDB
[[nodiscard]] MRMESH_API Expected<Mesh> offsetMesh( const MeshPart& mp, float offset, const OffsetParameters& params = {} );
 
[[nodiscard]] MRMESH_API Expected<Mesh> doubleOffsetMesh( const MeshPart& mp, float offsetA, float offsetB, const OffsetParameters& params = {} );
#endif
 
[[nodiscard]] MRMESH_API Expected<Mesh> mcOffsetMesh( const MeshPart& mp, float offset, 
    const OffsetParameters& params = {}, Vector<VoxelId, FaceId>* outMap = nullptr );
 
[[nodiscard]] MRMESH_API Expected<Mesh> mcShellMeshRegion( const Mesh& mesh, const FaceBitSet& region, float offset,
    const BaseShellParameters& params, Vector<VoxelId, FaceId> * outMap = nullptr );
 
[[nodiscard]] MRMESH_API Expected<Mesh> sharpOffsetMesh( const MeshPart& mp, float offset, const SharpOffsetParameters& params = {} );
 
struct GeneralOffsetParameters : SharpOffsetParameters
{
    enum class Mode : int
    {
#ifndef MRMESH_NO_OPENVDB
        Smooth,     
#endif
        Standard,   
        Sharpening  
    };
    Mode mode = Mode::Standard;
};
 
[[nodiscard]] MRMESH_API Expected<Mesh> generalOffsetMesh( const MeshPart& mp, float offset, const GeneralOffsetParameters& params );
 
[[nodiscard]] MRMESH_API Expected<Mesh> thickenMesh( const Mesh& mesh, float offset, const GeneralOffsetParameters & params = {} );
 
#ifndef MRMESH_NO_OPENVDB
[[nodiscard]] MRMESH_API Expected<Mesh> offsetPolyline( const Polyline3& polyline, float offset, const OffsetParameters& params = {} );
#endif
 
}