BoxFilter.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Math/MathFwd.h"
#include "Math/Vector2D.h"
 
namespace UE
{
namespace Geometry
{
 
class FBoxFilter
{
private:
    float Radius = 0.5f;
    
public:
    FBoxFilter(const float RadiusIn)
        : Radius(RadiusIn)
    {       
    }
 
    float GetWeight(const FVector2d& Dist) const
    {
        // Returns 1 if Dist is within the region [-Radius, Radius)x[-Radius, Radius) and 0 otherwise.
        return -Radius <= Dist.X && Dist.X < Radius && -Radius <= Dist.Y && Dist.Y < Radius;
    }
 
    bool IsInFilterRegion(const FVector2d& Dist) const
    {
        return -Radius <= Dist.X && Dist.X < Radius && -Radius <= Dist.Y && Dist.Y < Radius;
    }
};
 
} // end namespace UE::Geometry
} // end namespace UE