MRPointsToMeshProjector.h

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#pragma once
 
#include "MRMeshFwd.h"
#include "MRAffineXf3.h"
#include <cfloat>
#include <string>
 
namespace MR
{
 

class IPointsToMeshProjector
{
public:
    IPointsToMeshProjector() = default;
    IPointsToMeshProjector( const IPointsToMeshProjector & ) = default;
    IPointsToMeshProjector( IPointsToMeshProjector && ) noexcept = default;
 
    virtual ~IPointsToMeshProjector() = default;
    virtual void updateMeshData( const Mesh* mesh ) = 0;
    virtual void findProjections( std::vector<MeshProjectionResult>& result, const std::vector<Vector3f>& points,
                                  const AffineXf3f* worldXf = nullptr, const AffineXf3f* worldRefXf = nullptr,
                                  float upDistLimitSq = FLT_MAX, float loDistLimitSq = 0.0f ) = 0;

    virtual size_t projectionsHeapBytes( size_t numProjections ) const = 0;
};
 
struct MeshProjectionParameters
{
    float loDistLimitSq = 0;

    float upDistLimitSq = FLT_MAX;

    const AffineXf3f* refXf = nullptr;

    const AffineXf3f* xf = nullptr;
};

[[nodiscard]] MRMESH_API VertScalars findSignedDistances(
    const Mesh& refMesh, 
    const VertCoords & testPoints, const VertBitSet * validTestPoints = {}, 
    const MeshProjectionParameters & params = {},
    IPointsToMeshProjector * projector = {} ); 

[[nodiscard]] MRMESH_API VertScalars findSignedDistances(
    const Mesh& refMesh, 
    const Mesh& mesh,    
    const MeshProjectionParameters & params = {},
    IPointsToMeshProjector * projector = {} ); 

class MRMESH_CLASS PointsToMeshProjector : public IPointsToMeshProjector
{
    const Mesh* mesh_{ nullptr };
public:
    MRMESH_API virtual void updateMeshData( const Mesh* mesh ) override;
    MRMESH_API virtual void findProjections( std::vector<MeshProjectionResult>& result, const std::vector<Vector3f>& points,
                                             const AffineXf3f* objXf, const AffineXf3f* refObjXf,
                                             float upDistLimitSq, float loDistLimitSq ) override;

    MRMESH_API virtual size_t projectionsHeapBytes( size_t numProjections ) const override;
};
 
}