shape function derivatives in iso-parametric space
| 169 | |
| 170 | // shape function derivatives in iso-parametric space |
| 171 | inline void shapeFunctionsNaturalDerivatives(double xi, double eta, Matrix& dN) |
| 172 | { |
| 173 | dN(0, 0) = -1.0; |
| 174 | dN(1, 0) = 1.0; |
| 175 | dN(2, 0) = 0.0; |
| 176 | |
| 177 | dN(0, 1) = -1.0; |
| 178 | dN(1, 1) = 0.0; |
| 179 | dN(2, 1) = 1.0; |
| 180 | } |
| 181 | |
| 182 | /** \brief JacobianOperator |
| 183 | * |