CurvatureCriterion.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "Math/Curvature.h"
#include "Mesh/Criteria/Criterion.h"
 
namespace UE::CADKernel
{
struct FCurvePoint;
 
class FCurvatureCriterion : public FCriterion
{
    friend class FEntity;
 
protected:
 
    FCurvatureCriterion() = default;
 
public:
 
    void Serialize(FCADKernelArchive& Ar)
    {
        FCriterion::Serialize(Ar);
    }
 
    virtual void UpdateDelta(double InDeltaU, double InUSag, double InDiagonalSag, double InVSag, double ChordLength, double DiagonalLength, double& OutSagDeltaUMax, double& OutSagDeltaUMin, FIsoCurvature& IsoCurvature) const override
    {
        if (DiagonalLength > DOUBLE_SMALL_NUMBER)
        {
            double Curvature = 8 * InUSag / FMath::Square(DiagonalLength);
            if (IsoCurvature.Max < Curvature)
            {
                IsoCurvature.Max = Curvature;
            }
            if (IsoCurvature.Min > Curvature)
            {
                IsoCurvature.Min = Curvature;
            }
        }
    }
 
    virtual double Value() const override
    {
        return 0.;
    }
 
    virtual void ApplyOnEdgeParameters(FTopologicalEdge& Edge, const TArray<double>& Coordinates, const TArray<FCurvePoint>& Points) const override
    {
        // Do nothing
    }
 
    virtual ECriterion GetCriterionType() const override
    {
        return ECriterion::CADCurvature;
    }
 
 
protected:
 
    virtual bool IsAppliedBetweenBreaks() const override
    {
        return true;
    }
 
    virtual double ComputeDeltaU(double ChordLength, double DeltaU, double Sag) const override
    {
        return 0.0;
    };
 
};
 
} // namespace UE::CADKernel