ConeSurface.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "Geo/Surfaces/Surface.h"
 
namespace UE::CADKernel
{
class CADKERNEL_API FConeSurface : public FSurface
{
    friend FEntity;
 
protected:
    FMatrixH Matrix;
    double   StartRadius;
    double   ConeAngle;
 
    FConeSurface(const double InToleranceGeometric, const FMatrixH& InMatrix, double InStartRadius, double InConeAngle, double InStartRuleLength = -HUGE_VALUE, double InEndRuleLength = HUGE_VALUE, double InStartAngle = 0.0, double InEndAngle = DOUBLE_TWO_PI)
        : FConeSurface(InToleranceGeometric, InMatrix, InStartRadius, InConeAngle, FSurfacicBoundary(InStartAngle, InEndAngle, InStartRuleLength, InEndRuleLength))
    {
    }
 
    FConeSurface(const double InToleranceGeometric, const FMatrixH& InMatrix, double InStartRadius, double InConeAngle, const FSurfacicBoundary& InBoundary)
        : FSurface(InToleranceGeometric, InBoundary)
        , Matrix(InMatrix)
        , StartRadius(InStartRadius)
        , ConeAngle(InConeAngle)
    {
        ComputeMinToleranceIso();
    }
 
    FConeSurface() = default;
 
    void ComputeMinToleranceIso()
    {
        FVector Origin = Matrix.Multiply(FVector::ZeroVector);
 
        double DeltaVR = tan(ConeAngle);
        double Radius1 = FMath::Abs(StartRadius + Boundary[EIso::IsoV].Max * DeltaVR);
        double Radius2 = FMath::Abs(StartRadius + Boundary[EIso::IsoV].Min * DeltaVR);
        double Radius = FMath::Max(Radius2, Radius1);
 
        FVector Point2DU{ 1 , 0, 0 };
        double ScaleU = ComputeScaleAlongAxis(Point2DU, Matrix, Origin);
        double ToleranceU = Tolerance3D / Radius;
        ToleranceU /= ScaleU;
 
        FVector Point2DV{ 0, 1, 0 };
        double ScaleV = ComputeScaleAlongAxis(Point2DV, Matrix, Origin);
        double ToleranceV = Tolerance3D / FMath::Sqrt(FMath::Square(DeltaVR) + 1);
        ToleranceV /= ScaleV;
 
        MinToleranceIso.Set(ToleranceU, ToleranceV);
    }
 
public:
 
    virtual void Serialize(FCADKernelArchive& Ar) override
    {
        FSurface::Serialize(Ar);
        Ar << Matrix;
        Ar << StartRadius;
        Ar << ConeAngle;
    }
 
 
    ESurface GetSurfaceType() const
    {
        return ESurface::Cone;
    }
 
#ifdef CADKERNEL_DEV
    virtual FInfoEntity& GetInfo(FInfoEntity&) const override;
#endif
 
    virtual TSharedPtr<FEntityGeom> ApplyMatrix(const FMatrixH& InMatrix) const override;
 
    virtual void EvaluatePoint(const FVector2d& InSurfacicCoordinate, FSurfacicPoint& OutPoint3D, int32 InDerivativeOrder = 0) const override;
    virtual void EvaluatePointGrid(const FCoordinateGrid& Coordinates, FSurfacicSampling& OutPoints, bool bComputeNormals = false) const override;
 
    virtual void Presample(const FSurfacicBoundary& InBoundaries, FCoordinateGrid& OutCoordinates) override
    {
        PresampleIsoCircle(InBoundaries, OutCoordinates, EIso::IsoU);
 
        OutCoordinates[EIso::IsoV].Empty(3);
        OutCoordinates[EIso::IsoV].Add(InBoundaries[EIso::IsoV].Min);
        OutCoordinates[EIso::IsoV].Add((InBoundaries[EIso::IsoV].Max + InBoundaries[EIso::IsoV].Min) / 2.0);
        OutCoordinates[EIso::IsoV].Add(InBoundaries[EIso::IsoV].Max);
    }
 
};
}