+// Copyright (C) 2004-2016 CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+#include "MG_Hexotic_API.hxx"
+
+#include <SMESH_Comment.hxx>
+#include <SMESH_File.hxx>
+#include <Utils_SALOME_Exception.hxx>
+
+#include <vector>
+#include <iterator>
+#include <cstring>
+
+#ifdef USE_MG_LIBS
+
+extern "C"{
+#include <meshgems/meshgems.h>
+#include <meshgems/hexa.h>
+}
+
+struct MG_Hexotic_API::LibData
+{
+ // MG objects
+ context_t * _context;
+ hexa_session_t * _session;
+ mesh_t * _tria_mesh;
+ sizemap_t * _sizemap;
+ mesh_t * _hexa_mesh;
+
+ // data to pass to MG
+ std::vector<double> _xyz;
+ std::vector<double> _nodeSize; // required nodes
+ std::vector<int> _edgeNodesTags;
+ int _nbRequiredEdges;
+ std::vector<int> _triaNodesTags;
+ int _nbRequiredTria;
+
+ std::vector<int> _corners;
+
+ int _count;
+ volatile bool& _cancelled_flag;
+ std::string _errorStr;
+ double& _progress;
+ double _msgCost;
+
+ LibData( volatile bool & cancelled_flag, double& progress )
+ : _context(0), _session(0), _tria_mesh(0), _sizemap(0), _hexa_mesh(0),
+ _nbRequiredEdges(0), _nbRequiredTria(0),
+ _cancelled_flag( cancelled_flag ), _progress( progress ), _msgCost( 0.00015 )
+ {
+ }
+ // methods setting callbacks implemented after callback definitions
+ void Init();
+ bool Compute();
+
+ ~LibData()
+ {
+ if ( _hexa_mesh )
+ hexa_regain_mesh( _session, _hexa_mesh );
+ if ( _session )
+ hexa_session_delete( _session );
+ if ( _tria_mesh )
+ mesh_delete( _tria_mesh );
+ if ( _sizemap )
+ sizemap_delete( _sizemap );
+ if ( _context )
+ context_delete( _context );
+
+ _hexa_mesh = 0;
+ _session = 0;
+ _tria_mesh = 0;
+ _sizemap = 0;
+ _context = 0;
+ }
+
+ void AddError( const char *txt )
+ {
+ if ( txt )
+ {
+ _errorStr += txt;
+ }
+ }
+
+ const std::string& GetErrors()
+ {
+ return _errorStr;
+ }
+
+ void MG_Error(const char* txt="")
+ {
+ SMESH_Comment msg("\nMeshGems error. ");
+ msg << txt << "\n";
+ AddError( msg.c_str() );
+ }
+
+ bool SetParam( const std::string& param, const std::string& value )
+ {
+ status_t ret = hexa_set_param( _session, param.c_str(), value.c_str() );
+#ifdef _DEBUG_
+ //std::cout << param << " = " << value << std::endl;
+#endif
+ return ( ret == STATUS_OK );
+ }
+
+ bool Cancelled()
+ {
+ return _cancelled_flag;
+ }
+
+ int ReadNbSubDomains()
+ {
+ integer nb = 0;
+ status_t ret = mesh_get_subdomain_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_subdomain_count problem");
+ return nb;
+ }
+
+ int ReadNbNodes()
+ {
+ _corners.clear();
+
+ integer nb = 0;
+ status_t ret = mesh_get_vertex_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_vertex_count problem");
+ return nb;
+ }
+
+ int ReadNbEdges()
+ {
+ integer nb = 0;
+ status_t ret = mesh_get_edge_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_edge_count problem");
+ return nb;
+ }
+
+ int ReadNbTria()
+ {
+ integer nb = 0;
+ status_t ret = mesh_get_triangle_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_triangle_count problem");
+ return nb;
+ }
+
+ int ReadNbQuads()
+ {
+ integer nb = 0;
+ status_t ret = mesh_get_quadrangle_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_quadrangle_count problem");
+ return nb;
+ }
+
+ int ReadNbTetra()
+ {
+ integer nb = 0;
+ status_t ret = mesh_get_tetrahedron_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_tetrahedron_count problem");
+ return nb;
+ }
+
+ int ReadNbHexa()
+ {
+ integer nb = 0;
+ status_t ret = mesh_get_hexahedron_count( _hexa_mesh, & nb );
+
+ if ( ret != STATUS_OK ) MG_Error("mesh_get_hexahedron_count problem");
+ return nb;
+ }
+
+ int ReadNbCorners()
+ {
+ return _corners.size();
+ }
+
+ void ResetCounter()
+ {
+ _count = 1;
+ }
+
+ void ReadSubDomain( int* nbNodes, int* faceInd, int* ori, int* domain )
+ {
+ integer tag, seed_type, seed_idx, seed_orientation;
+ status_t ret = mesh_get_subdomain_description( _hexa_mesh, _count,
+ &tag, &seed_type, &seed_idx, &seed_orientation);
+
+ if ( ret != STATUS_OK ) MG_Error( "unable to get a sub-domain description");
+
+ *nbNodes = 3;
+ *faceInd = seed_idx;
+ *domain = tag;
+ *ori = seed_orientation;
+
+ ++_count;
+ }
+ void ReadNodeXYZ( double* x, double* y, double *z, int* /*domain*/ )
+ {
+ real coo[3];
+ status_t ret = mesh_get_vertex_coordinates( _hexa_mesh, _count, coo );
+ if ( ret != STATUS_OK ) MG_Error( "unable to get resulting vertices" );
+
+ *x = coo[0];
+ *y = coo[1];
+ *z = coo[2];
+
+ integer isCorner = 0;
+ ret = mesh_get_vertex_corner_property( _hexa_mesh, _count, &isCorner);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting vertex property" );
+ if ( isCorner )
+ _corners.push_back( _count );
+
+ ++_count;
+ }
+
+ void ReadEdgeNodes( int* node1, int* node2, int* domain )
+ {
+ integer vtx[2], tag;
+ status_t ret = mesh_get_edge_vertices( _hexa_mesh, _count, vtx);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting edge" );
+
+ *node1 = vtx[0];
+ *node2 = vtx[1];
+
+ ret = mesh_get_edge_tag( _hexa_mesh, _count, &tag );
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting edge tag" );
+
+ *domain = tag;
+
+ ++_count;
+ }
+
+ void ReadTriaNodes( int* node1, int* node2, int* node3, int* domain )
+ {
+ integer vtx[3], tag;
+ status_t ret = mesh_get_triangle_vertices( _hexa_mesh, _count, vtx);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting triangle" );
+
+ *node1 = vtx[0];
+ *node2 = vtx[1];
+ *node3 = vtx[2];
+
+ ret = mesh_get_triangle_tag( _hexa_mesh, _count, &tag );
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting triangle tag" );
+
+ *domain = tag;
+
+ ++_count;
+ }
+
+ void ReadQuadNodes( int* node1, int* node2, int* node3, int* node4, int* domain )
+ {
+ integer vtx[4], tag;
+ status_t ret = mesh_get_quadrangle_vertices( _hexa_mesh, _count, vtx);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting quadrangle" );
+
+ *node1 = vtx[0];
+ *node2 = vtx[1];
+ *node3 = vtx[2];
+ *node4 = vtx[3];
+
+ ret = mesh_get_quadrangle_tag( _hexa_mesh, _count, &tag );
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting quadrangle tag" );
+
+ *domain = tag;
+
+ ++_count;
+ }
+
+ void ReadTetraNodes( int* node1, int* node2, int* node3, int* node4, int* domain )
+ {
+ integer vtx[4], tag;
+ status_t ret = mesh_get_tetrahedron_vertices( _hexa_mesh, _count, vtx);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting tetrahedron" );
+
+ *node1 = vtx[0];
+ *node2 = vtx[1];
+ *node3 = vtx[2];
+ *node4 = vtx[3];
+
+ ret = mesh_get_tetrahedron_tag( _hexa_mesh, _count, &tag );
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting tetrahedron tag" );
+
+ *domain = tag;
+
+ ++_count;
+ }
+
+ void ReadHexaNodes( int* node1, int* node2, int* node3, int* node4,
+ int* node5, int* node6, int* node7, int* node8, int* domain )
+ {
+ integer vtx[8], tag;
+ status_t ret = mesh_get_hexahedron_vertices( _hexa_mesh, _count, vtx);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting hexahedron" );
+
+ *node1 = vtx[0];
+ *node2 = vtx[1];
+ *node3 = vtx[2];
+ *node4 = vtx[3];
+ *node5 = vtx[4];
+ *node6 = vtx[5];
+ *node7 = vtx[6];
+ *node8 = vtx[7];
+
+ ret = mesh_get_hexahedron_tag( _hexa_mesh, _count, &tag );
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting hexahedron tag" );
+
+ *domain = tag;
+
+ ++_count;
+ }
+
+ void ReadCorner( int* node )
+ {
+ if ( _count <= ReadNbCorners() )
+ *node = _corners[ _count - 1 ];
+ else
+ *node = 0;
+
+ ++_count;
+ }
+
+ void SetNbVertices( int nb )
+ {
+ _xyz.reserve( _xyz.capacity() + nb );
+ }
+
+ void SetNbEdges( int nb )
+ {
+ _edgeNodesTags.reserve( nb * 3 );
+ }
+
+ void SetNbTria( int nb )
+ {
+ _triaNodesTags.reserve( nb * 4 );
+ }
+
+ void SetNbReqVertices( int nb )
+ {
+ _nodeSize.reserve( nb );
+ }
+
+ void SetNbReqEdges( int nb )
+ {
+ _nbRequiredEdges = nb;
+ }
+
+ void SetNbReqTria( int nb )
+ {
+ _nbRequiredTria = nb;
+ }
+
+ void AddNode( double x, double y, double z, int domain )
+ {
+ _xyz.push_back( x );
+ _xyz.push_back( y );
+ _xyz.push_back( z );
+ }
+
+ void AddSizeAtNode( double size )
+ {
+ _nodeSize.push_back( size );
+ }
+
+ void AddEdgeNodes( int node1, int node2, int domain )
+ {
+ _edgeNodesTags.push_back( node1 );
+ _edgeNodesTags.push_back( node2 );
+ _edgeNodesTags.push_back( domain );
+ }
+
+ void AddTriaNodes( int node1, int node2, int node3, int domain )
+ {
+ _triaNodesTags.push_back( node1 );
+ _triaNodesTags.push_back( node2 );
+ _triaNodesTags.push_back( node3 );
+ _triaNodesTags.push_back( domain );
+ }
+
+ int NbNodes()
+ {
+ return _xyz.size() / 3;
+ }
+
+ double* NodeCoord( int iNode )
+ {
+ return & _xyz[ iNode * 3 ];
+ }
+
+ int NbEdges()
+ {
+ return _edgeNodesTags.size() / 3;
+ }
+
+ int* GetEdgeNodes( int iEdge )
+ {
+ return & _edgeNodesTags[ iEdge * 3 ];
+ }
+
+ int GetEdgeTag( int iEdge )
+ {
+ return _edgeNodesTags[ iEdge * 3 + 2 ];
+ }
+
+ int NbTriangles()
+ {
+ return _triaNodesTags.size() / 4;
+ }
+
+ int * GetTriaNodes( int iTria )
+ {
+ return & _triaNodesTags[ iTria * 4 ];
+ }
+
+ int GetTriaTag( int iTria )
+ {
+ return _triaNodesTags[ iTria * 4 + 3 ];
+ }
+
+ int IsVertexRequired( int iNode )
+ {
+ return ! ( iNode < int( _xyz.size() - _nodeSize.size() ));
+ }
+
+ double GetSizeAtVertex( int iNode )
+ {
+ return IsVertexRequired( iNode ) ? _nodeSize[ iNode - _xyz.size() + _nodeSize.size() ] : 0.;
+ }
+};
+
+namespace // functions called by MG library to exchange with the application
+{
+ status_t get_vertex_count(integer * nbvtx, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ *nbvtx = data->NbNodes();
+
+ return STATUS_OK;
+ }
+
+ status_t get_vertex_coordinates(integer ivtx, real * xyz, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ double* coord = data->NodeCoord( ivtx-1 );
+ for (int j = 0; j < 3; j++)
+ xyz[j] = coord[j];
+
+ return STATUS_OK;
+ }
+ status_t get_edge_count(integer * nbedge, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ *nbedge = data->NbEdges();
+
+ return STATUS_OK;
+ }
+
+ status_t get_edge_vertices(integer iedge, integer * vedge, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ int* nodes = data->GetEdgeNodes( iedge-1 );
+ vedge[0] = nodes[0];
+ vedge[1] = nodes[1];
+
+ return STATUS_OK;
+ }
+
+ status_t get_edge_tag(integer iedge, integer * tag, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ * tag = data->GetEdgeTag( iedge-1 );
+
+ return STATUS_OK;
+ }
+
+ status_t get_triangle_count(integer * nbtri, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ *nbtri = data->NbTriangles();
+
+ return STATUS_OK;
+ }
+
+ status_t get_triangle_vertices(integer itri, integer * vtri, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ int* nodes = data->GetTriaNodes( itri-1 );
+ vtri[0] = nodes[0];
+ vtri[1] = nodes[1];
+ vtri[2] = nodes[2];
+
+ return STATUS_OK;
+ }
+
+ status_t get_triangle_tag(integer itri, integer * tag, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ * tag = data->GetTriaTag( itri-1 );
+
+ return STATUS_OK;
+ }
+
+ // status_t get_triangle_extra_vertices(integer itri, integer * typetri,
+ // integer * evtri, void *user_data)
+ // {
+ // int j;
+ // MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+
+ // if (1) {
+ // /* We want to describe a linear "3 nodes" triangle */
+ // *typetri = MESHGEMS_MESH_ELEMENT_TYPE_TRIA3;
+ // } else {
+ // /* We want to describe a quadratic "6 nodes" triangle */
+ // *typetri = MESHGEMS_MESH_ELEMENT_TYPE_TRIA6;
+ // for (j = 0; j < 3; j++)
+ // evtri[j] = 0; /* the j'th quadratic vertex index of the itri'th triangle */
+ // }
+
+ // return STATUS_OK;
+ // }
+
+ // status_t get_tetrahedron_count(integer * nbtetra, void *user_data)
+ // {
+ // MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+
+ // *nbtetra = 0; /* the number of tetra in your input mesh (0 if you describe a surface mesh) */
+
+ // return STATUS_OK;
+ // }
+
+ // status_t get_tetrahedron_vertices(integer itetra, integer * vtetra,
+ // void *user_data)
+ // {
+ // int j;
+ // MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+
+ // for (j = 0; j < 4; j++)
+ // vtetra[j] = 0; /* the j'th vertex index of the itetra'th tetrahedron */
+
+ // return STATUS_OK;
+ // }
+
+ status_t get_vertex_required_property(integer ivtx, integer * rvtx, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ *rvtx = data->IsVertexRequired( ivtx - 1 );
+
+ return STATUS_OK;
+ }
+
+ status_t get_vertex_weight(integer ivtx, real * wvtx, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ *wvtx = data->GetSizeAtVertex( ivtx - 1 );
+
+ return STATUS_OK;
+ }
+
+ status_t my_message_cb(message_t * msg, void *user_data)
+ {
+ char *desc;
+ message_get_description(msg, &desc);
+
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ data->AddError( desc );
+
+ // Compute progress
+ // corresponding messages are:
+ // " | Analyzing the surface mesh |" => 1 %
+ // " | Building and conforming the octree |" => 8 %
+ // " | Subdomains and boundary recovery |" => 15%
+ // " | Mesh bending and smoothing |" => 45%
+ // " | Final mesh statistics |" => 99%
+
+ double newProgress = std::min( 0.99, data->_progress + data->_msgCost );
+ if ( strlen( desc ) > 25 )
+ {
+ if ( strncmp( desc+3, "Analyzing the surface mesh", 26 ) == 0 )
+ newProgress = 0.01, data->_msgCost = ( 0.08 - 0.01 ) / 10;
+ else if ( strncmp( desc+3, "Building and conforming the octree", 34 ) == 0 )
+ newProgress = 0.08, data->_msgCost = ( 0.15 - 0.08 ) / 100;
+ else if ( strncmp( desc+3, "Subdomains and boundary recovery", 32 ) == 0 )
+ newProgress = 0.15, data->_msgCost = ( 0.45 - 0.15 ) / 20;
+ else if ( strncmp( desc+3, "Mesh bending and smoothing", 26 ) == 0 )
+ newProgress = 0.45, data->_msgCost = ( 0.99 - 0.45 ) / 65;
+ else if ( strncmp( desc+3, "Final mesh statistics", 21 ) == 0 )
+ newProgress = 0.99;
+ }
+ data->_progress = std::max( data->_progress, newProgress );
+
+ return STATUS_OK;
+ }
+
+ status_t my_interrupt_callback(integer *interrupt_status, void *user_data)
+ {
+ MG_Hexotic_API::LibData* data = (MG_Hexotic_API::LibData *) user_data;
+ *interrupt_status = ( data->Cancelled() ? INTERRUPT_STOP : INTERRUPT_CONTINUE );
+
+ return STATUS_OK;
+ }
+
+} // end namespace
+
+
+void MG_Hexotic_API::LibData::Init()
+{
+ status_t ret;
+
+ // Create the meshgems working context
+ _context = context_new();
+ if ( !_context ) MG_Error( "unable to create a new context" );
+
+ // Set the message callback for the _context.
+ ret = context_set_message_callback( _context, my_message_cb, this );
+ if ( ret != STATUS_OK ) MG_Error("in context_set_message_callback");
+
+ // Create the structure holding the callbacks giving access to triangle mesh
+ _tria_mesh = mesh_new( _context );
+ if ( !_tria_mesh ) MG_Error("unable to create a new mesh");
+
+ // Set callbacks to provide triangle mesh data
+ mesh_set_get_vertex_count( _tria_mesh, get_vertex_count, this );
+ mesh_set_get_vertex_coordinates( _tria_mesh, get_vertex_coordinates, this );
+ mesh_set_get_vertex_required_property( _tria_mesh, get_vertex_required_property, this );
+ mesh_set_get_edge_count( _tria_mesh, get_edge_count, this);
+ mesh_set_get_edge_vertices( _tria_mesh, get_edge_vertices, this );
+ mesh_set_get_edge_tag( _tria_mesh, get_edge_tag, this );
+ mesh_set_get_triangle_count( _tria_mesh, get_triangle_count, this );
+ mesh_set_get_triangle_vertices( _tria_mesh, get_triangle_vertices, this );
+ mesh_set_get_triangle_tag( _tria_mesh, get_triangle_tag, this );
+
+ // Create a hexa session
+ _session = hexa_session_new( _context );
+ if ( !_session ) MG_Error( "unable to create a new hexa session");
+
+ ret = hexa_set_interrupt_callback( _session, my_interrupt_callback, this );
+ if ( ret != STATUS_OK ) MG_Error("in hexa_set_interrupt_callback");
+
+}
+
+bool MG_Hexotic_API::LibData::Compute()
+{
+ // Set surface mesh
+ status_t ret = hexa_set_surface_mesh( _session, _tria_mesh );
+ if ( ret != STATUS_OK ) MG_Error( "unable to set surface mesh");
+
+ // Set a sizemap
+ if ( !_nodeSize.empty() )
+ {
+ _sizemap = meshgems_sizemap_new( _tria_mesh, meshgems_sizemap_type_iso_mesh_vertex,
+ (void*) &get_vertex_weight, this );
+ if ( !_sizemap ) MG_Error("unable to create a new sizemap");
+
+ ret = hexa_set_sizemap( _session, _sizemap );
+ if ( ret != STATUS_OK ) MG_Error( "unable to set sizemap");
+ }
+
+ //////////////////////////////////////////////////////////////////////////////////////////
+ // const char* file = "/tmp/ghs3d_IN.mesh";
+ // mesh_write_mesh( _tria_mesh,file);
+ // std::cout << std::endl << std::endl << "Write " << file << std::endl << std::endl << std::endl;
+
+ ret = hexa_compute_mesh( _session );
+ if ( ret != STATUS_OK ) return false;
+
+ ret = hexa_get_mesh( _session, &_hexa_mesh);
+ if (ret != STATUS_OK) MG_Error( "unable to get resulting mesh");
+
+ //////////////////////////////////////////////////////////////////////////////////////////
+ // file = "/tmp/ghs3d_OUT.mesh";
+ // mesh_write_mesh( _hexa_mesh,file);
+ // std::cout << std::endl << std::endl << "Write " << file << std::endl << std::endl << std::endl;
+
+ return true;
+}
+
+
+#endif // ifdef USE_MG_LIBS
+
+
+//================================================================================
+/*!
+ * \brief Constructor
+ */
+//================================================================================
+
+MG_Hexotic_API::MG_Hexotic_API(volatile bool& cancelled_flag, double& progress)
+{
+#ifdef USE_MG_LIBS
+ _useLib = true;
+ _libData = new LibData( cancelled_flag, progress );
+ _libData->Init();
+#endif
+ if ( getenv("MG_HEXA_USE_EXE"))
+ _useLib = false;
+}
+
+//================================================================================
+/*!
+ * \brief Destructor
+ */
+//================================================================================
+
+MG_Hexotic_API::~MG_Hexotic_API()
+{
+#ifdef USE_MG_LIBS
+ delete _libData;
+ _libData = 0;
+#endif
+ std::set<int>::iterator id = _openFiles.begin();
+ for ( ; id != _openFiles.end(); ++id )
+ ::GmfCloseMesh( *id );
+ _openFiles.clear();
+}
+
+//================================================================================
+/*!
+ * \brief Return the way of MG usage
+ */
+//================================================================================
+
+bool MG_Hexotic_API::IsLibrary()
+{
+ return _useLib;
+}
+
+//================================================================================
+/*!
+ * \brief Switch to usage of MG-Hexa executable
+ */
+//================================================================================
+
+void MG_Hexotic_API::SetUseExecutable()
+{
+ _useLib = false;
+}
+
+//================================================================================
+/*!
+ * \brief Compute the hexa mesh
+ * \param [in] cmdLine - a command to run mg_hexa.exe
+ * \return bool - Ok or not
+ */
+//================================================================================
+
+bool MG_Hexotic_API::Compute( const std::string& cmdLine, std::string& errStr )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+
+ // split cmdLine
+ std::istringstream strm( cmdLine );
+ std::istream_iterator<std::string> sIt( strm ), sEnd;
+ std::vector< std::string > args( sIt, sEnd );
+
+ // set parameters
+ std::string param, value;
+ for ( size_t i = 1; i < args.size(); ++i )
+ {
+ // look for a param name; it starts from "-"
+ param = args[i];
+ if ( param.size() < 2 || param[0] != '-')
+ continue;
+ while ( param[0] == '-')
+ param = param.substr( 1 );
+
+ value = "";
+ while ( i+1 < args.size() && args[i+1][0] != '-' )
+ {
+ if ( !value.empty() ) value += " ";
+ value += args[++i];
+ }
+ if ( !_libData->SetParam( param, value ))
+ std::cout << "Warning: wrong param: '" << param <<"' = '" << value << "'" << std::endl;
+ }
+
+ // compute
+ return _libData->Compute();
+#endif
+ }
+
+ int err = system( cmdLine.c_str() ); // run
+
+ if ( err )
+ errStr = SMESH_Comment("system(mg-hexa.exe ...) command failed with error: ")
+ << strerror( errno );
+
+ GetLog(); // write a log file
+ _logFile = ""; // not to write it again
+
+ return !err;
+
+}
+
+//================================================================================
+/*!
+ * \brief Prepare for reading a mesh data
+ */
+//================================================================================
+
+int MG_Hexotic_API::GmfOpenMesh(const char* theFile, int rdOrWr, int * ver, int * dim)
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ return 1;
+#endif
+ }
+ int id = ::GmfOpenMesh(theFile, rdOrWr, ver, dim );
+ _openFiles.insert( id );
+ return id;
+}
+
+//================================================================================
+/*!
+ * \brief Return nb of entities
+ */
+//================================================================================
+
+int MG_Hexotic_API::GmfStatKwd( int iMesh, GmfKwdCod what )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ switch ( what )
+ {
+ case GmfSubDomainFromGeom: return _libData->ReadNbSubDomains();
+ case GmfVertices: return _libData->ReadNbNodes();
+ case GmfEdges: return _libData->ReadNbEdges();
+ case GmfTriangles: return _libData->ReadNbTria();
+ case GmfQuadrilaterals: return _libData->ReadNbQuads();
+ case GmfTetrahedra: return _libData->ReadNbTetra();
+ case GmfHexahedra: return _libData->ReadNbHexa();
+ case GmfCorners: return _libData->ReadNbCorners();
+ default: return 0;
+ }
+ return 0;
+#endif
+ }
+ return ::GmfStatKwd( iMesh, what );
+}
+
+//================================================================================
+/*!
+ * \brief Prepare for reading some data
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGotoKwd( int iMesh, GmfKwdCod what )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ResetCounter();
+ return;
+#endif
+ }
+ ::GmfGotoKwd( iMesh, what );
+}
+
+//================================================================================
+/*!
+ * \brief Return index of a domain identified by a triangle normal
+ * \param [in] iMesh - mesh file index
+ * \param [in] what - must be GmfSubDomainFromGeom
+ * \param [out] nbNodes - nb nodes in a face
+ * \param [out] faceInd - face index
+ * \param [out] ori - face orientation
+ * \param [out] domain - domain index
+ * \param [in] dummy - an artificial param used to discriminate from GmfGetLin() reading
+ * a triangle
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin( int iMesh, GmfKwdCod what, int* nbNodes, int* faceInd, int* ori, int* domain, int dummy )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ReadSubDomain( nbNodes, faceInd, ori, domain );
+ return;
+#endif
+ }
+ ::GmfGetLin( iMesh, what, nbNodes, faceInd, ori, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Return coordinates of a next node
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what,
+ double* x, double* y, double *z, int* domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ReadNodeXYZ( x, y, z, domain );
+ return;
+#endif
+ }
+ ::GmfGetLin(iMesh, what, x, y, z, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Return coordinates of a next node
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what,
+ float* x, float* y, float *z, int* domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ double X,Y,Z;
+ _libData->ReadNodeXYZ( &X, &Y, &Z, domain );
+ *x = X;
+ *y = Y;
+ *z = Z;
+ return;
+#endif
+ }
+ ::GmfGetLin(iMesh, what, x, y, z, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Return node index of a next corner
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what, int* node )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ReadCorner( node );
+ return;
+#endif
+ }
+ ::GmfGetLin(iMesh, what, node );
+}
+
+//================================================================================
+/*!
+ * \brief Return node indices of a next edge
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what, int* node1, int* node2, int* domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ReadEdgeNodes( node1, node2, domain );
+ return;
+#endif
+ }
+ ::GmfGetLin( iMesh, what, node1, node2, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Return node indices of a next triangle
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what,
+ int* node1, int* node2, int* node3, int* domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ReadTriaNodes( node1, node2, node3, domain );
+ return;
+#endif
+ }
+ ::GmfGetLin(iMesh, what, node1, node2, node3, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Return node indices of a next tetrahedron or quadrangle
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what,
+ int* node1, int* node2, int* node3, int* node4, int* domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ if ( what == GmfQuadrilaterals )
+ _libData->ReadQuadNodes( node1, node2, node3, node4, domain );
+ else
+ _libData->ReadTetraNodes( node1, node2, node3, node4, domain );
+ return;
+#endif
+ }
+ ::GmfGetLin(iMesh, what, node1, node2, node3, node4, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Return node indices of a next hexahedron
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfGetLin(int iMesh, GmfKwdCod what,
+ int* node1, int* node2, int* node3, int* node4,
+ int* node5, int* node6, int* node7, int* node8,
+ int* domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->ReadHexaNodes( node1, node2, node3, node4,
+ node5, node6, node7, node8, domain );
+ return;
+#endif
+ }
+ ::GmfGetLin(iMesh, what, node1, node2, node3, node4, node5, node6, node7, node8, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Prepare for passing data to MeshGems
+ */
+//================================================================================
+
+int MG_Hexotic_API::GmfOpenMesh(const char* theFile, int rdOrWr, int ver, int dim)
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ return 1;
+#endif
+ }
+ int id = ::GmfOpenMesh(theFile, rdOrWr, ver, dim);
+ _openFiles.insert( id );
+ return id;
+}
+
+//================================================================================
+/*!
+ * \brief Set number of entities
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetKwd(int iMesh, GmfKwdCod what, int nb )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ switch ( what ) {
+ case GmfVertices: _libData->SetNbVertices( nb ); break;
+ case GmfEdges: _libData->SetNbEdges ( nb ); break;
+ case GmfRequiredEdges: _libData->SetNbReqEdges( nb ); break;
+ case GmfTriangles: _libData->SetNbTria ( nb ); break;
+ case GmfRequiredTriangles: _libData->SetNbReqTria ( nb ); break;
+ default:;
+ }
+ return;
+#endif
+ }
+ ::GmfSetKwd(iMesh, what, nb );
+}
+
+//================================================================================
+/*!
+ * \brief Add coordinates of a node
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetLin(int iMesh, GmfKwdCod what, double x, double y, double z, int domain)
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->AddNode( x, y, z, domain );
+ return;
+#endif
+ }
+ ::GmfSetLin(iMesh, what, x, y, z, domain);
+}
+
+//================================================================================
+/*!
+ * \brief Set number of field entities
+ * \param [in] iMesh - solution file index
+ * \param [in] what - solution type
+ * \param [in] nbNodes - nb of entities
+ * \param [in] nbTypes - nb of data entries in each entity
+ * \param [in] type - types of the data entries
+ *
+ * Used to prepare to storing size at nodes
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetKwd(int iMesh, GmfKwdCod what, int nbNodes, int dummy, int type[] )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ if ( what == GmfSolAtVertices ) _libData->SetNbReqVertices( nbNodes );
+ return;
+#endif
+ }
+ ::GmfSetKwd(iMesh, what, nbNodes, dummy, type );
+}
+
+//================================================================================
+/*!
+ * \brief Add solution data
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetLin(int iMesh, GmfKwdCod what, double vals[])
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->AddSizeAtNode( vals[0] );
+ return;
+#endif
+ }
+ ::GmfSetLin(iMesh, what, vals);
+}
+
+//================================================================================
+/*!
+ * \brief Add edge nodes
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetLin(int iMesh, GmfKwdCod what, int node1, int node2, int domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->AddEdgeNodes( node1, node2, domain );
+ return;
+#endif
+ }
+ ::GmfSetLin(iMesh, what, node1, node2, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Add a 'required' flag
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetLin(int iMesh, GmfKwdCod what, int id )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ return;
+#endif
+ }
+ ::GmfSetLin(iMesh, what, id );
+}
+
+//================================================================================
+/*!
+ * \brief Add triangle nodes
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfSetLin(int iMesh, GmfKwdCod what, int node1, int node2, int node3, int domain )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ _libData->AddTriaNodes( node1, node2, node3, domain );
+ return;
+#endif
+ }
+ ::GmfSetLin(iMesh, what, node1, node2, node3, domain );
+}
+
+//================================================================================
+/*!
+ * \brief Close a file
+ */
+//================================================================================
+
+void MG_Hexotic_API::GmfCloseMesh( int iMesh )
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ return;
+#endif
+ }
+ ::GmfCloseMesh( iMesh );
+ _openFiles.erase( iMesh );
+}
+
+//================================================================================
+/*!
+ * \brief Return true if the log is not empty
+ */
+//================================================================================
+
+bool MG_Hexotic_API::HasLog()
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ return !_libData->GetErrors().empty();
+#endif
+ }
+ SMESH_File file( _logFile );
+ return file.size() > 0;
+}
+
+//================================================================================
+/*!
+ * \brief Return log contents
+ */
+//================================================================================
+
+std::string MG_Hexotic_API::GetLog()
+{
+ if ( _useLib ) {
+#ifdef USE_MG_LIBS
+ const std::string& err = _libData->GetErrors();
+ if ( !_logFile.empty() && !err.empty() )
+ {
+ SMESH_File file( _logFile, /*openForReading=*/false );
+ file.openForWriting();
+ file.write( err.c_str(), err.size() );
+ }
+ return err;
+#endif
+ }
+ SMESH_File file( _logFile );
+ return file.getPos();
+}