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| | FindPointsGSLIB () |
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| | FindPointsGSLIB (MPI_Comm _comm) |
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| | ~FindPointsGSLIB () |
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| void | Setup (Mesh &m, const double bb_t=0.1, const double newt_tol=1.0e-12, const int npt_max=256) |
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| void | FindPoints (const Vector &point_pos) |
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| void | FindPoints (Mesh &m, const Vector &point_pos, const double bb_t=0.1, const double newt_tol=1.0e-12, const int npt_max=256) |
| | Setup FindPoints and search positions. More...
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| void | Interpolate (const GridFunction &field_in, Vector &field_out) |
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| void | Interpolate (const Vector &point_pos, const GridFunction &field_in, Vector &field_out) |
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| void | Interpolate (Mesh &m, const Vector &point_pos, const GridFunction &field_in, Vector &field_out) |
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| void | SetL2AvgType (AvgType avgtype_) |
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| void | SetDefaultInterpolationValue (double interp_value_) |
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| void | FreeData () |
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| const Array< unsigned int > & | GetCode () const |
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| const Array< unsigned int > & | GetElem () const |
| | Return element number for each point found by FindPoints. More...
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| const Array< unsigned int > & | GetProc () const |
| | Return MPI rank on which each point was found by FindPoints. More...
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| const Vector & | GetReferencePosition () const |
| | Return reference coordinates for each point found by FindPoints. More...
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| const Vector & | GetDist () const |
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| const Array< unsigned int > & | GetGSLIBElem () const |
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| const Vector & | GetGSLIBReferencePosition () const |
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FindPointsGSLIB can robustly evaluate a GridFunction on an arbitrary collection of points. There are three key functions in FindPointsGSLIB:
- Setup - constructs the internal data structures of gslib.
- FindPoints - for any given arbitrary set of points in physical space, gslib finds the element number, MPI rank, and the reference space coordinates inside the element that each point is located in. gslib also returns a code that indicates whether the point was found inside an element, on element border, or not found in the domain.
- Interpolate - Interpolates any grid function at the points found using 2.
FindPointsGSLIB provides interface to use these functions individually or using a single call.
Definition at line 45 of file gslib.hpp.
| void mfem::FindPointsGSLIB::FindPoints |
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const Vector & |
point_pos | ) |
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Searches positions given in physical space by point_pos. These positions must by ordered by nodes: (XXX...,YYY...,ZZZ). This function populates the following member variables: gsl_code Return codes for each point: inside element (0), element boundary (1), not found (2). gsl_proc MPI proc ids where the points were found. gsl_elem Element ids where the points were found. Defaults to 0 for points that were not found. gsl_mfem_elem Element ids corresponding to MFEM-mesh where the points were found. gsl_mfem_elem != gsl_elem for simplices Defaults to 0 for points that were not found. gsl_ref Reference coordinates of the found point. Ordered by vdim (XYZ,XYZ,XYZ...). Defaults to -1 for points that were not found. Note: the gslib reference frame is [-1,1]. gsl_mfem_ref Reference coordinates gsl_ref mapped to [0,1]. Defaults to 0 for points that were not found. gsl_dist Distance between the sought and the found point in physical space.
Definition at line 125 of file gslib.cpp.
1.8.5
