moab
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Class with convenience functions for handling spectral mesh Class with convenience functions for handling spectral meshes. See description of spectral mesh handling in doc/metadata_info.doc and in the MOAB user's guide. More...
#include <SpectralMeshTool.hpp>
Public Member Functions | |
SpectralMeshTool (Interface *impl, int order=0) | |
Constructor. | |
~SpectralMeshTool () | |
Destructor. | |
Tag | spectral_vertices_tag (const bool create_if_missing=false) |
Return tag used to store lexicographically-ordered vertex array NOTE: If creating this tag with this call, this SpectralMeshTool instance must already have a non-zero spectral order value set on it; the size of the spectral vertices tag depends on this order. | |
Tag | spectral_order_tag (const bool create_if_missing=false) |
Return tag used to store spectral order. | |
ErrorCode | convert_to_fine (EntityHandle spectral_set) |
Convert representation from coarse to fine Each element in set, or in interface if set is not input, is converted to fine elements, using vertices in SPECTRAL_VERTICES tagged array. | |
ErrorCode | convert_to_coarse (int order=0, EntityHandle spectral_set=0) |
Convert representation from fine to coarse Each element in set, or in interface if set is not input, is converted to coarse elements, with fine vertices put into SPECTRAL_VERTICES tagged array. NOTE: This function assumes that each order^d (fine) elements comprise each coarse element, and are in order of fine elements in each coarse element. If order is input as 0, looks for a SPECTRAL_ORDER tag on the mesh. | |
template<class T > | |
ErrorCode | create_spectral_elems (const T *conn, int num_fine_elems, int dim, Range &output_range, int start_idx=0, Range *local_gids=NULL) |
Create coarse spectral elements from fine elements pointed to by conn This function creates the coarse elements by taking conn (assumed to be in FE ordering) and picking out the corner vertices to make coarse connectivity, and the other vertices (along with corners) to make SPECTRAL_VERTICES array pointed to by each entity. | |
void | spectral_order (int order) |
Set spectral order for this instance. | |
int | spectral_order () |
Get spectral order for this instance. | |
Static Public Attributes | |
static const short int | permute_array [] |
static const short int | lin_permute_array [] |
Private Attributes | |
Interface * | mbImpl |
the MB instance that this works with | |
Error * | mError |
error object for this tool | |
Tag | svTag |
SPECTRAL_VERTICES tag. | |
Tag | soTag |
SPECTRAL_ORDER tag. | |
int | spectralOrder |
order of the spectral mesh being accessed | |
int | spectralOrderp1 |
order of the spectral mesh being accessed plus one |
Class with convenience functions for handling spectral mesh Class with convenience functions for handling spectral meshes. See description of spectral mesh handling in doc/metadata_info.doc and in the MOAB user's guide.
There are two primary representations of spectral meshes: a) coarse elements: with SPECTRAL_VERTICES lexicographically-ordered array of fine vertices on each element, and tags on vertices or on elements (with _LEX suffix) b) fine elements: as linear elements made from fine vertices, with tags on vertices
Definition at line 21 of file SpectralMeshTool.hpp.
moab::SpectralMeshTool::SpectralMeshTool | ( | Interface * | impl, |
int | order = 0 |
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) | [inline] |
Constructor.
impl | MOAB Interface instance |
order | Spectral order, defaults to 0 |
Definition at line 121 of file SpectralMeshTool.hpp.
: mbImpl(impl), svTag(0), soTag(0), spectralOrder(order), spectralOrderp1(order+1) { impl->query_interface(mError); }
moab::SpectralMeshTool::~SpectralMeshTool | ( | ) | [inline] |
ErrorCode moab::SpectralMeshTool::convert_to_coarse | ( | int | order = 0 , |
EntityHandle | spectral_set = 0 |
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) |
Convert representation from fine to coarse Each element in set, or in interface if set is not input, is converted to coarse elements, with fine vertices put into SPECTRAL_VERTICES tagged array. NOTE: This function assumes that each order^d (fine) elements comprise each coarse element, and are in order of fine elements in each coarse element. If order is input as 0, looks for a SPECTRAL_ORDER tag on the mesh.
order | Order of the spectral mesh |
spectral_set | Set containing spectral elements |
Definition at line 74 of file SpectralMeshTool.cpp.
{ if (order) spectralOrder = order; if (!spectralOrder) { mError->set_last_error("Spectral order must be set or input before converting to spectral mesh."); return MB_FAILURE; } Range tmp_ents, ents; ErrorCode rval = mbImpl->get_entities_by_handle(spectral_set, tmp_ents); if (MB_SUCCESS != rval || ents.empty()) return rval; // get the max-dimensional elements from it ents = tmp_ents.subset_by_dimension(3); if (ents.empty()) ents = tmp_ents.subset_by_dimension(2); if (ents.empty()) ents = tmp_ents.subset_by_dimension(1); if (ents.empty()) { mError->set_last_error("Can't find any entities for conversion!"); return MB_FAILURE; } // get a ptr to connectivity if (ents.psize() != 1) { mError->set_last_error("Entities must be in one chunk for conversion."); return MB_FAILURE; } EntityHandle *conn; int count, verts_per_e; rval = mbImpl->connect_iterate(ents.begin(), ents.end(), conn, verts_per_e, count); if (MB_SUCCESS != rval || count != (int)ents.size()) return rval; Range tmp_range; return create_spectral_elems(conn, ents.size(), CN::Dimension(TYPE_FROM_HANDLE(*ents.begin())), tmp_range); }
ErrorCode moab::SpectralMeshTool::convert_to_fine | ( | EntityHandle | spectral_set | ) |
Convert representation from coarse to fine Each element in set, or in interface if set is not input, is converted to fine elements, using vertices in SPECTRAL_VERTICES tagged array.
spectral_set | Set containing spectral elements |
Definition at line 60 of file SpectralMeshTool.cpp.
{ return MB_NOT_IMPLEMENTED; }
template ErrorCode moab::SpectralMeshTool::create_spectral_elems< EntityHandle > | ( | const T * | conn, |
int | num_fine_elems, | ||
int | dim, | ||
Range & | output_range, | ||
int | start_idx = 0 , |
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Range * | local_gids = NULL |
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) |
Create coarse spectral elements from fine elements pointed to by conn This function creates the coarse elements by taking conn (assumed to be in FE ordering) and picking out the corner vertices to make coarse connectivity, and the other vertices (along with corners) to make SPECTRAL_VERTICES array pointed to by each entity.
conn | Connectivity of fine (linear) elements, in FE ordering |
verts_per_e | Vertices per entity |
num_fine_elems | Number of fine elements represented by conn |
spectral_set | Set to which coarse elements should be added, if any |
start_idx | Starting index in conn (for parallel support) |
local_gids | If non-null, will insert all fine vertices into this range |
Definition at line 110 of file SpectralMeshTool.cpp.
{ assert(spectralOrder && num_fine_elems); // now create num_coarse_elems // compute the number of local elems, accounting for coarse or fine representation // spectral_unit is the # fine elems per coarse elem, or spectralOrder^2 int spectral_unit = spectralOrder*spectralOrder; int num_coarse_elems = num_fine_elems / spectral_unit; EntityHandle *new_conn; EntityHandle start_elem; ReadUtilIface *rmi; ErrorCode rval = mbImpl->query_interface(rmi); if (MB_SUCCESS != rval) return rval; int verts_per_felem = spectralOrderp1*spectralOrderp1, verts_per_celem = std::pow((double)2.0, dim); rval = rmi->get_element_connect(num_coarse_elems, verts_per_celem, (2 == dim ? MBQUAD : MBHEX), 0, start_elem, new_conn); if (MB_SUCCESS != rval) { mError->set_last_error("Failed to create elems."); return rval; } output_range.insert(start_elem, start_elem + num_coarse_elems - 1); // read connectivity into that space // permute_array takes a 4*order^2-long vector of integers, representing the connectivity of order^2 // elems (fine elems in a coarse elem), and picks out the ids of the vertices necessary // to get a lexicographically-ordered array of vertices in a spectral element of that order //assert(verts_per_felem == (sizeof(permute_array)/sizeof(unsigned int))); // we're assuming here that elems was empty on input int count; EntityHandle *sv_ptr = NULL; rval = mbImpl->tag_iterate(spectral_vertices_tag(true), output_range.begin(), output_range.end(), count, (void*&)sv_ptr); if (MB_SUCCESS != rval) { mError->set_last_error("Failed to get SPECTRAL_VERTICES ptr."); return rval; } assert(count == num_coarse_elems); int f = start_idx, fs = 0, fl = 0; for (int c = 0; c < num_coarse_elems; c++) { for (int i = 0; i < verts_per_celem; i++) new_conn[fl+i] = conn[f+lin_permute_array[i]]; fl += verts_per_celem; for (int i = 0; i < verts_per_felem; i++) sv_ptr[fs+i] = conn[f+permute_array[i]]; f += verts_per_celem*spectral_unit; fs += verts_per_felem; } if (local_gids) std::copy(sv_ptr, sv_ptr+verts_per_felem*num_coarse_elems, range_inserter(*local_gids)); return MB_SUCCESS; }
void moab::SpectralMeshTool::spectral_order | ( | int | order | ) | [inline] |
Set spectral order for this instance.
order | Order set on this instance |
Definition at line 84 of file SpectralMeshTool.hpp.
{spectralOrder = order; spectralOrderp1 = order+1;}
int moab::SpectralMeshTool::spectral_order | ( | ) | [inline] |
Get spectral order for this instance.
Definition at line 89 of file SpectralMeshTool.hpp.
{return spectralOrder;}
Tag moab::SpectralMeshTool::spectral_order_tag | ( | const bool | create_if_missing = false | ) |
Return tag used to store spectral order.
so_tag | Spectral order tag |
create_if_missing | If true, will create this tag if it doesn't exist already |
create_if_missing | If true, will create this tag if it doesn't exist already |
Definition at line 41 of file SpectralMeshTool.cpp.
{ ErrorCode rval = MB_SUCCESS; if (!soTag && create_if_missing) { // create it int dum = 0; rval = mbImpl->tag_get_handle("SPECTRAL_ORDER", 1, MB_TYPE_INTEGER, soTag, MB_TAG_DENSE | MB_TAG_CREAT, &dum); } return (rval == MB_SUCCESS ? soTag : 0); }
Tag moab::SpectralMeshTool::spectral_vertices_tag | ( | const bool | create_if_missing = false | ) |
Return tag used to store lexicographically-ordered vertex array NOTE: If creating this tag with this call, this SpectralMeshTool instance must already have a non-zero spectral order value set on it; the size of the spectral vertices tag depends on this order.
sv_tag | Spectral vertices tag |
create_if_missing | If true, will create this tag if it doesn't exist already |
Definition at line 19 of file SpectralMeshTool.cpp.
{ ErrorCode rval = MB_SUCCESS; if (!svTag && create_if_missing) { if (!spectralOrder) { // should already be a spectral order tag... mError->set_last_error("Spectral order must be set before creating spectral vertices tag."); return 0; } // create it std::vector<EntityHandle> dum_val(spectralOrderp1*spectralOrderp1, 0); rval = mbImpl->tag_get_handle("SPECTRAL_VERTICES", spectralOrderp1*spectralOrderp1, MB_TYPE_HANDLE, svTag, MB_TAG_DENSE | MB_TAG_CREAT, &dum_val[0]); } return (rval == MB_SUCCESS ? svTag : 0); }
const short int moab::SpectralMeshTool::lin_permute_array [static] |
{0, 25, 34, 11}
Definition at line 98 of file SpectralMeshTool.hpp.
Interface* moab::SpectralMeshTool::mbImpl [private] |
the MB instance that this works with
Definition at line 103 of file SpectralMeshTool.hpp.
Error* moab::SpectralMeshTool::mError [private] |
error object for this tool
Definition at line 106 of file SpectralMeshTool.hpp.
const short int moab::SpectralMeshTool::permute_array [static] |
{0, 1, 13, 25, 3, 2, 14, 26, 7, 6, 18, 30, 11, 10, 22, 34}
Definition at line 96 of file SpectralMeshTool.hpp.
Tag moab::SpectralMeshTool::soTag [private] |
SPECTRAL_ORDER tag.
Definition at line 112 of file SpectralMeshTool.hpp.
int moab::SpectralMeshTool::spectralOrder [private] |
order of the spectral mesh being accessed
Definition at line 115 of file SpectralMeshTool.hpp.
int moab::SpectralMeshTool::spectralOrderp1 [private] |
order of the spectral mesh being accessed plus one
Definition at line 118 of file SpectralMeshTool.hpp.
Tag moab::SpectralMeshTool::svTag [private] |
SPECTRAL_VERTICES tag.
Definition at line 109 of file SpectralMeshTool.hpp.