A 2D dual linear shape function for a 3-noded triangle More...
#include <mrtr_functions.H>


Public Member Functions | |
| Function_DualLinearTri (int out) | |
| Constructor. | |
| Function_DualLinearTri (const MOERTEL::Function_DualLinearTri &old) | |
| Copy-Constructor. | |
| virtual MOERTEL::Function * | Clone () const |
| Clone method. | |
| virtual | ~Function_DualLinearTri () |
| Destructor. | |
| bool | EvaluateFunction (const MOERTEL::Segment &seg, const double *xi, double *val, const int valdim, double *deriv) |
| Evaluate the function and derivatives at a given local coordinate. | |
A 2D dual linear shape function for a 3-noded triangle
phi_1 = 3 - 2 * xi_1 - 2 * xi_2
phi_2 = 4 * xi_1 - 1
phi_3 = 4 * xi_2 - 1
phi_1,xi_1 = -2
phi_1,xi_2 = -2
phi_2,xi_1 = 4
phi_2,xi_2 = 0
phi_3,xi_1 = 0
phi_3,xi_2 = 4
| MOERTEL::Function_DualLinearTri::Function_DualLinearTri | ( | int | out | ) | [inline] |
Constructor.
| out | : Level of output information written to stdout ( 0 - 10 ) |
| MOERTEL::Function * MOERTEL::Function_DualLinearTri::Clone | ( | ) | const [virtual] |
Clone method.
Makes a deep copy of this instance and returns a pointer to it.
Implements MOERTEL::Function.
| bool MOERTEL::Function_DualLinearTri::EvaluateFunction | ( | const MOERTEL::Segment & | seg, |
| const double * | xi, | ||
| double * | val, | ||
| const int | valdim, | ||
| double * | deriv | ||
| ) | [virtual] |
Evaluate the function and derivatives at a given local coordinate.
| xi | (in) : Local coordinate where to evaluate the function (dimension 2) |
| val | (out) : Function values at xi, dimension 3, if NULL on input no evaluation |
| valdim | (in) : Dimension of val should be 3 |
| deriv | (out) : Derivative of functions at xi, dimension 6, if NULL on input no evaluation |
Implements MOERTEL::Function.
References MOERTEL::ReportError().
1.7.6.1