UE::Geometry::VectorUtil::TriGradient

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Description

Calculate gradient of scalar field values fi,fj,fk defined at corners of triangle Vi,Vj,Vk and interpolated across triangle using linear basis functions. This gradient is a 3D vector lying in the plane of the triangle (or zero if field is constant).

namespace UE  
{  
    namespace Geometry  
    {  
        namespace VectorUtil  
        {  
            template<typename RealType>  
            TVector < RealType > UE::Geometry::VectorUtil::TriGradient  
            (  
                TVector < RealType > Vi,  
                TVector < RealType > Vj,  
                TVector < RealType > Vk,  
                RealType fi,  
                RealType fj,  
                RealType fk  
            )  
        }  
    }  
}  
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gradient (3D vector) lying in plane of triangle.