public Element(IElementSet set, int nElement)
        {
            Identity = new Identity(set.GetElementId(nElement));

            int nV = set.GetVertexCount(nElement);
            int nF = set.GetFaceCount(nElement);

            X = new double[nV];
            Y = new double[nV];

            if (set.HasZ)
                Z = new double[nV];
            if (set.HasM)
                M = new double[nV];

            for (int n = 0; n < nV; ++n)
            {
                X[n] = set.GetVertexXCoordinate(nElement, n);
                Y[n] = set.GetVertexYCoordinate(nElement, n);

                if (set.HasZ)
                    Z[n] = set.GetVertexZCoordinate(nElement, n);
                if (set.HasM)
                    M[n] = set.GetVertexMCoordinate(nElement, n);
            }

            if (nF > 0)
            {
                Faces = new int[nF][];

                for (int n = 0; n < nF; ++n)
                    Faces[n] = set.GetFaceVertexIndices(nElement, n);
            }
        }