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MFEM
v4.5.2
Finite element discretization library
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Vector coefficient defined as a normalized vector field (returns v/|v|) More...
#include <coefficient.hpp>
Public Member Functions | |
NormalizedVectorCoefficient (VectorCoefficient &A, double tol=1e-6) | |
Return a vector normalized to a length of one. More... | |
void | SetTime (double t) |
Set the time for internally stored coefficients. More... | |
void | SetACoef (VectorCoefficient &A) |
Reset the vector coefficient. More... | |
VectorCoefficient * | GetACoef () const |
Return the vector coefficient. More... | |
virtual void | Eval (Vector &V, ElementTransformation &T, const IntegrationPoint &ip) |
Evaluate the coefficient at ip. More... | |
virtual void | Eval (Vector &V, ElementTransformation &T, const IntegrationPoint &ip)=0 |
Evaluate the vector coefficient in the element described by T at the point ip, storing the result in V. More... | |
virtual void | Eval (DenseMatrix &M, ElementTransformation &T, const IntegrationRule &ir) |
Evaluate the vector coefficient in the element described by T at all points of ir, storing the result in M. More... | |
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VectorCoefficient (int vd) | |
Initialize the VectorCoefficient with vector dimension vd. More... | |
double | GetTime () |
Get the time for time dependent coefficients. More... | |
int | GetVDim () |
Returns dimension of the vector. More... | |
virtual void | Eval (DenseMatrix &M, ElementTransformation &T, const IntegrationRule &ir) |
Evaluate the vector coefficient in the element described by T at all points of ir, storing the result in M. More... | |
virtual void | Project (QuadratureFunction &qf) |
Fill the QuadratureFunction qf by evaluating the coefficient at the quadrature points. More... | |
virtual | ~VectorCoefficient () |
Additional Inherited Members | |
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int | vdim |
double | time |
Vector coefficient defined as a normalized vector field (returns v/|v|)
Definition at line 1752 of file coefficient.hpp.
mfem::NormalizedVectorCoefficient::NormalizedVectorCoefficient | ( | VectorCoefficient & | A, |
double | tol = 1e-6 |
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Return a vector normalized to a length of one.
This class evaluates the vector coefficient A and, if |A| > tol, returns the normalized vector A / |A|. If |A| <= tol, the zero vector is returned.
Definition at line 1082 of file coefficient.cpp.
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virtual |
Evaluate the coefficient at ip.
Implements mfem::VectorCoefficient.
Definition at line 1093 of file coefficient.cpp.
virtual void mfem::VectorCoefficient::Eval |
Evaluate the vector coefficient in the element described by T at the point ip, storing the result in V.
void mfem::VectorCoefficient::Eval |
Evaluate the vector coefficient in the element described by T at all points of ir, storing the result in M.
The dimensions of M are GetVDim() by ir.GetNPoints() and they must be set by the implementation of this method.
The general implementation provided by the base class (using the Eval method for one IntegrationPoint at a time) can be overloaded for more efficient implementation.
Definition at line 222 of file coefficient.cpp.
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inline |
Return the vector coefficient.
Definition at line 1774 of file coefficient.hpp.
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inline |
Reset the vector coefficient.
Definition at line 1772 of file coefficient.hpp.
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virtual |
Set the time for internally stored coefficients.
Reimplemented from mfem::VectorCoefficient.
Definition at line 1087 of file coefficient.cpp.