MRFastWindingNumber.h

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#pragma once
 
#include "MRProgressCallback.h"
#include "MRExpected.h"
#include "MRId.h"
 
namespace MR
{
 
class IFastWindingNumber
{
public:
    virtual ~IFastWindingNumber() = default;
 
    virtual void calcFromVector( std::vector<float>& res, const std::vector<Vector3f>& points, float beta, FaceId skipFace = {} ) = 0;
 
    virtual bool calcSelfIntersections( FaceBitSet& res, float beta, ProgressCallback cb = {} ) = 0;
 
    virtual Expected<void> calcFromGrid( std::vector<float>& res, const Vector3i& dims, const AffineXf3f& gridToMeshXf, float beta, ProgressCallback cb = {} ) = 0;
 
    virtual Expected<void> calcFromGridWithDistances( std::vector<float>& res, const Vector3i& dims, const AffineXf3f& gridToMeshXf, float windingNumberThreshold, float beta, float maxDistSq, float minDistSq, ProgressCallback cb ) = 0;
};
 
class MRMESH_CLASS FastWindingNumber : public IFastWindingNumber
{
public:
    [[nodiscard]] MRMESH_API FastWindingNumber( const Mesh & mesh );
 
    // see methods' descriptions in IFastWindingNumber
    MRMESH_API void calcFromVector( std::vector<float>& res, const std::vector<Vector3f>& points, float beta, FaceId skipFace = {} ) override;
    MRMESH_API bool calcSelfIntersections( FaceBitSet& res, float beta, ProgressCallback cb ) override;
    MRMESH_API Expected<void> calcFromGrid( std::vector<float>& res, const Vector3i& dims, const AffineXf3f& gridToMeshXf, float beta, ProgressCallback cb ) override;
    MRMESH_API float calcWithDistances( const Vector3f& p, float windingNumberThreshold, float beta, float maxDistSq, float minDistSq );
    MRMESH_API Expected<void> calcFromGridWithDistances( std::vector<float>& res, const Vector3i& dims, const AffineXf3f& gridToMeshXf, float windingNumberThreshold, float beta, float maxDistSq, float minDistSq, ProgressCallback cb ) override;
 
private:
    [[nodiscard]] float calc_( const Vector3f & q, float beta, FaceId skipFace = {} ) const;
 
    const Mesh & mesh_;
    const AABBTree & tree_;
    const Dipoles & dipoles_;
};
 
} // namespace MR