> Dear All,
>
> Have you experienced similar problems as the described below?
>
> It seems that the output of vtk_export for vectorial elements
> depends on the dimension of the mesh (geometric dimension, mesh.dim()
> I meant).
[skip ...]
Well, the dependency of the output on the geometric dimension of a mesh
is feature not a bug, however the question arises if this is the right
feature :).
The culprit is in the function:
template<class IT> void vtk_export::write_vec(IT p) {
float v[3];
for (size_type i=0; i < dim_; ++i) {
v[i] = float(p[i]);
}
for (size_type i=dim_; i < 3; ++i) v[i] = 0.0f;
write_val(v[0]);write_val(v[1]);write_val(v[2]);
}
It gets as an argument the index (iterator) of the starting element
of the vector being written.
It then assumes that the size of the vector is equal to dim_ where
dim_ is the geometric dimension of the underlying mesh.
I think that this is a bit restricting -- we can have 2-dimensional
vector field over 1-dimensional segment mesh and the same field over
3-dimensional segment mesh. On export to VTK point coordinates are
padded with zeros thus the output should be the same and should not
depend on the mesh geometric dimension.
The fix should be easy -- my proposal is to explicitly tell
vtk_export::write_vec what is the dimension of the vector field
When exporting point data this dimension will be deduced from
mesh_fem. When exporting cell data or sliced point data this dimension
must be specified explicitly or will be set by default to 1.
This way we can export cell data which is a vector field (is this
supported by VTK?).
My proposal changes GetFEM API but in a way that should not break any code.
The changes restrict to the single file getfem_export.h
In the attachment I send the modified getfem_export.h
The question arises if the discussed issue applies to DX output.
I haven't check that yet.
Regards,
Roman
--
Roman Putanowicz, PhD < [email protected] >
Institute for Computational Civil Engng (L-5)
Dept. of Civil Engng, Cracow Univ. of Technology
www.l5.pk.edu.pl, tel. +48 12 628 2569, fax 2034
// -*- c++ -*- (enables emacs c++ mode)
//===========================================================================
//
// Copyright (C) 2001-2009 Yves Renard
//
// This file is a part of GETFEM++
//
// Getfem++ 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 program 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 program; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, you may use this file as it is a part of a free
// software library without restriction. Specifically, if other files
// instantiate templates or use macros or inline functions from this file,
// or you compile this file and link it with other files to produce an
// executable, this file does not by itself cause the resulting executable
// to be covered by the GNU Lesser General Public License. This exception
// does not however invalidate any other reasons why the executable file
// might be covered by the GNU Lesser General Public License.
//
//===========================================================================
/*...@file getfem_export.h
@author Yves Renard <[email protected]>,
@author Julien Pommier <[email protected]>
@date October 15, 2001.
@brief Export solutions to various formats.
*/
#ifndef GETFEM_EXPORT_H__
#define GETFEM_EXPORT_H__
#include "getfem_interpolation.h"
#include "getfem_mesh_slice.h"
#include <list>
namespace getfem {
/* ********************************************************************* */
/* */
/* Save a solution in a file with a Pk interpolation. */
/* */
/* ********************************************************************* */
inline std::string remove_spaces(const std::string &s) {
std::string s2(s);
for (unsigned i=0; i < s.size(); ++i)
if (s2[i] <= ' ') s2[i] = '_';
return s2;
}
/** @brief VTK export.
export class to VTK ( http://www.kitware.com/vtk.html ) file format
(not the XML format, but the old format)
A vtk_export can store multiple scalar/vector fields.
*/
class vtk_export {
protected:
std::ostream &os;
char header[256]; // hard limit in vtk
bool ascii;
const stored_mesh_slice *psl;
std::auto_ptr<mesh_fem> pmf;
dal::bit_vector pmf_dof_used;
std::vector<unsigned> pmf_cell_type;
std::ofstream real_os;
dim_type dim_;
bool reverse_endian;
enum { EMPTY, HEADER_WRITTEN, STRUCTURE_WRITTEN, IN_CELL_DATA,
IN_POINT_DATA } state;
public:
typedef enum { VTK_VERTEX = 1, VTK_LINE = 3, VTK_QUADRATIC_EDGE = 21,
VTK_TRIANGLE = 5, VTK_QUADRATIC_TRIANGLE = 22,
VTK_PIXEL = 8, VTK_QUAD = 9, VTK_QUADRATIC_QUAD = 23,
VTK_TETRA = 10, VTK_QUADRATIC_TETRA = 24,
VTK_WEDGE = 13, /*VTK_QUADRATIC_WEDGE = 26,*/
VTK_VOXEL = 11, VTK_HEXAHEDRON = 12,
VTK_QUADRATIC_HEXAHEDRON = 25 } vtk_cell_type;
vtk_export(const std::string& fname, bool ascii_ = false);
vtk_export(std::ostream &os_, bool ascii_ = false);
/** should be called before write_*_data */
void exporting(const mesh& m);
void exporting(const mesh_fem& mf);
void exporting(const stored_mesh_slice& sl);
/** the header is the second line of text in the exported file,
you can put whatever you want -- call this before any write_dataset
or write_mesh */
void set_header(const std::string& s);
void write_mesh();
/** append a new scalar or vector field defined on mf to the .vtk file. If
you are exporting a slice, or if mf != get_exported_mesh_fem(), U will
be interpolated on the slice, or on get_exported_mesh_fem().
Note that vectors should be written AFTER scalars, and tensors
after vectors
NO SPACE ALLOWED in 'name' */
template<class VECT> void write_point_data(const getfem::mesh_fem &mf,
const VECT& U0,
const std::string& name);
/** append a new scalar or vector field to .vtk file. The Uslice vector is
the field interpolated on the exported mesh_slice This function should
not be used if you are not exporting a slice! NO SPACE ALLOWED in
'name' */
template<class VECT> void write_sliced_point_data(const VECT& Uslice,
const std::string& name,
getfem::size_type qdim=1);
/** export data which is constant over each element. You should not use
this function if you are exporting a slice. U should have
convex_index().card() elements. */
template<class VECT> void write_cell_data(const VECT& U,
const std::string& name,
getfem::size_type qdim = 1);
/** export a data_set correspounding to measures of quality for each convex
of the supplied mesh (which should have the same number of convex than
the one used in the vtk_export)
If a slice is being exported, the convex quality is written as
point_data (TO IMPROVE ONEDAY), if a mesh/mesh_fem is being exported,
it is written as cell_data
*/
void write_mesh_quality(const mesh &m);
void write_normals();
const stored_mesh_slice& get_exported_slice() const;
const mesh_fem& get_exported_mesh_fem() const;
private:
void init();
void check_header();
void write_mesh_structure_from_slice();
void write_mesh_structure_from_mesh_fem();
void switch_to_cell_data();
void switch_to_point_data();
template<class T> void write_val(T v);
template<class V> void write_vec(V p, getfem::size_type qdim);
template<class IT> void write_3x3tensor(IT p);
void write_separ();
template<class VECT> void write_dataset_(const VECT& U,
const std::string& name,
getfem::size_type qdim,
bool cell_data=false);
};
template<class T> void vtk_export::write_val(T v) {
if (ascii) os << " " << v;
else {
char *p = (char*)&v;
if (reverse_endian)
for (size_type i=0; i < sizeof(v)/2; ++i)
std::swap(p[i], p[sizeof(v)-i-1]);
os.write(p, sizeof(T));
}
}
template<class IT> void vtk_export::write_vec(IT p, getfem::size_type qdim) {
float v[3];
for (size_type i=0; i < qdim; ++i) {
v[i] = float(p[i]);
}
for (size_type i=qdim; i < 3; ++i) v[i] = 0.0f;
write_val(v[0]);write_val(v[1]);write_val(v[2]);
}
template<class IT> void vtk_export::write_3x3tensor(IT p) {
float v[3][3];
memset(v, 0, sizeof v);
for (size_type i=0; i < dim_; ++i) {
for (size_type j=0; j < dim_; ++j)
v[i][j] = float(p[i + j*dim_]);
}
for (size_type i=0; i < 3; ++i) {
for (size_type j=0; j < 3; ++j) {
write_val(v[i][j]);
}
if (ascii) os << "\n";
}
}
template<class VECT>
void vtk_export::write_point_data(const getfem::mesh_fem &mf, const VECT& U,
const std::string& name) {
size_type Q = (gmm::vect_size(U) / mf.nb_dof()) * mf.get_qdim();
size_type qdim = mf.get_qdim();
if (psl) {
std::vector<scalar_type> Uslice(Q*psl->nb_points());
psl->interpolate(mf, U, Uslice);
write_dataset_(Uslice, name, qdim);
} else {
std::vector<scalar_type> V(pmf->nb_dof() * Q);
if (&mf != &(*pmf)) {
interpolation(mf, *pmf, U, V);
} else gmm::copy(U,V);
size_type cnt = 0;
for (dal::bv_visitor d(pmf_dof_used); !d.finished(); ++d, ++cnt) {
if (cnt != d)
for (size_type q=0; q < Q; ++q) {
V[cnt*Q + q] = V[d*Q + q];
}
}
V.resize(Q*pmf_dof_used.card());
write_dataset_(V, name, qdim);
}
}
template<class VECT>
void vtk_export::write_cell_data(const VECT& U, const std::string& name, getfem::size_type qdim) {
write_dataset_(U, name, qdim, true);
}
template<class VECT>
void vtk_export::write_sliced_point_data(const VECT& U,
const std::string& name,
getfem::size_type qdim) {
write_dataset_(U, name, qdim, false);
}
template<class VECT>
void vtk_export::write_dataset_(const VECT& U, const std::string& name,
getfem::size_type qdim,
bool cell_data) {
write_mesh();
size_type nb_val = 0;
if (cell_data) {
switch_to_cell_data();
nb_val = psl ? psl->linked_mesh().convex_index().card()
: pmf->linked_mesh().convex_index().card();
} else {
switch_to_point_data();
nb_val = psl ? psl->nb_points() : pmf_dof_used.card();
}
//size_type Q = gmm::vect_size(U) / nb_val;
size_type Q = qdim;
GMM_ASSERT1(gmm::vect_size(U) == nb_val*Q,
"inconsistency in the size of the dataset: "
<< gmm::vect_size(U) << " != " << nb_val << "*" << Q);
write_separ();
if (Q == 1) {
os << "SCALARS " << remove_spaces(name) << " float 1\n";
os << "LOOKUP_TABLE default\n";
for (size_type i=0; i < nb_val; ++i) {
write_val(float(U[i]));
}
} else if (Q <= 3) {
os << "VECTORS " << remove_spaces(name) << " float\n";
for (size_type i=0; i < nb_val; ++i) {
write_vec(U.begin() + i*Q, Q);
}
} else if (Q == gmm::sqr(dim_)) {
/* tensors : coef are supposed to be stored in FORTRAN order
in the VTK file, they are written with C (row major) order
*/
os << "TENSORS " << remove_spaces(name) << " float\n";
for (size_type i=0; i < nb_val; ++i) {
write_3x3tensor(U.begin() + i*Q);
}
} else GMM_ASSERT1(false, "vtk does not accept vectors of dimension > 3");
write_separ();
}
/** @brief A (quite large) class for exportation of data to IBM OpenDX.
http://www.opendx.org/
This class is more capable than the VTK export, as it is
possible to export many different meshes/slices, with their
edges, datasets, and create series of dataset for animations
etc, in a single '.dx' file.
Moreover, it is able to reopen a '.dx' file and append new data
into it. Hence it is possible, if many time-steps are to be
saved, to view intermediate results in OpenDX during the
computation.
*/
class dx_export {
std::ostream &os;
char header[256];
bool ascii;
const stored_mesh_slice *psl;
bool psl_use_merged; /* flag enabled if we merge the points of
psl before export */
std::auto_ptr<mesh_fem> pmf;
dal::bit_vector pmf_dof_used;
std::vector<unsigned> pmf_cell_type;
std::fstream real_os;
dim_type dim_, connections_dim;
struct dxSeries {
std::string name;
std::list<std::string> members;
};
struct dxObject {
std::string name;
std::string mesh;
};
struct dxMesh {
unsigned flags;
typedef enum { NONE=0, WITH_EDGES=1, STRUCTURE_WRITTEN=2 } flags_t;
std::string name;
dxMesh() : flags(NONE) {}
};
std::list<dxObject> objects;
std::list<dxSeries> series;
std::list<dxMesh> meshes;
bool header_written;
public:
dx_export(const std::string& fname, bool ascii_ = false,
bool append_ = false);
dx_export(std::ostream &os_, bool ascii_ = false);
~dx_export(); /* the file is not complete until the destructor
has been executed */
void exporting(const mesh& m, std::string name = std::string());
void exporting(const mesh_fem& mf, std::string name = std::string());
void exporting(const stored_mesh_slice& sl, bool merge_points = true,
std::string name = std::string());
/** append edges information (if you want to draw the mesh and are
using a refined slice. Should be called just after exporting(..) */
void exporting_mesh_edges(bool with_slice_edge = true);
/** the header is the second line of text in the exported file,
you can put whatever you want -- call this before any write_dataset
or write_mesh */
void set_header(const std::string& s);
void write_mesh();
/** add an object (typically the name of a data field) to a
'series', i.e. an aggregate of consecutive objects. Using
'series' is useful for animations in opendx
If 'field_name' corresponds to a data_set whose mesh edges have
been exported, a second series called serie_name + '_edges'
will be filled, which will allow you to view the mesh edges.
*/
void serie_add_object(const std::string& serie_name,
const std::string& object_name);
void serie_add_object(const std::string& serie_name)
{ serie_add_object(serie_name, current_data_name()); }
/** return the name of current mesh (use exporting(...) to change
the current mesh) */
std::string current_mesh_name() { return current_mesh().name; }
/** return the name of last written data_set */
std::string current_data_name() { return current_data().name; }
template<class VECT> void
write_point_data(const getfem::mesh_fem &mf,
const VECT& U0, std::string name = std::string());
template<class VECT> void
write_sliced_point_data(const VECT& Uslice,
std::string name = std::string());
/* TOBEDONE !!!!!!!!!!!
template<class VECT> void
write_cell_data(const VECT& U, std::string name = std::string());
void write_mesh_quality(const mesh &m);*/
void write_normals();
const stored_mesh_slice& get_exported_slice() const;
const mesh_fem& get_exported_mesh_fem() const;
private:
void init();
void reread_metadata();
void update_metadata(std::ios::pos_type);
void write_series();
void serie_add_object_(const std::string &serie_name,
const std::string &object_name);
void write_separ();
std::string default_name(std::string s, int count,
const char *default_prefix) {
if (s.size() == 0) {
std::stringstream ss; ss << default_prefix << count; return ss.str();
} else return s;
}
template<class T> void write_val(T v) {
if (ascii) os << " " << v;
else os.write((char*)&v, sizeof(T));
}
static const char* endianness() {
static int i=0x12345678;
char *p = (char*)&i;
if (*p == 0x12) return "msb";
else if (*p == 0x78) return "lsb";
else return "this is very strange..";
}
bool new_mesh(std::string &name);
std::list<dxMesh>::iterator get_mesh(const std::string& name,
bool raise_error = true);
std::list<dxObject>::iterator get_object(const std::string& name,
bool raise_error = true);
dxMesh ¤t_mesh() {
if (meshes.size()) return meshes.back();
else GMM_ASSERT1(false, "no mesh!");
}
dxObject ¤t_data() {
if (objects.size()) return objects.back();
else GMM_ASSERT1(false, "no data!");
}
std::string name_of_pts_array(const std::string &meshname)
{ return meshname + std::string("_pts"); }
std::string name_of_conn_array(const std::string &meshname)
{ return meshname + std::string("_conn"); }
std::string name_of_edges_array(const std::string &meshname)
{ return meshname + std::string("_edges"); }
void check_header();
const char *dxname_of_convex_structure(bgeot::pconvex_structure cvs);
void write_convex_attributes(bgeot::pconvex_structure cvs);
void write_mesh_structure_from_slice();
void write_mesh_structure_from_mesh_fem();
void write_mesh_edges_from_slice(bool with_slice_edge);
void write_mesh_edges_from_mesh();
template <class VECT>
void smooth_field(const VECT& U, base_vector &sU);
template<class VECT>
void write_dataset_(const VECT& U, std::string name, bool cell_data=false);
};
template <class VECT>
void dx_export::smooth_field(const VECT& U, base_vector &sU) {
size_type Q = gmm::vect_size(U) / psl->nb_points();
sU.clear(); sU.resize(Q*psl->nb_merged_nodes());
for (size_type i=0; i < psl->nb_merged_nodes(); ++i) {
for (size_type j=0; j < psl->merged_point_cnt(i); ++j)
for (size_type q=0; q < Q; ++q)
sU[i*Q+q] += U[psl->merged_point_nodes(i)[j].pos*Q+q];
for (size_type q=0; q < Q; ++q)
sU[i*Q+q] /= double(psl->merged_point_cnt(i));
}
}
template<class VECT>
void dx_export::write_point_data(const getfem::mesh_fem &mf, const VECT& U,
std::string name) {
size_type Q = (gmm::vect_size(U) / mf.nb_dof())*mf.get_qdim();
if (psl) {
std::vector<scalar_type> Uslice(Q*psl->nb_points());
psl->interpolate(mf, U, Uslice);
write_sliced_point_data(Uslice,name);
} else {
std::vector<scalar_type> V(pmf->nb_dof() * Q);
if (&mf != &(*pmf)) {
interpolation(mf, *pmf, U, V);
} else gmm::copy(U,V);
size_type cnt = 0;
for (dal::bv_visitor d(pmf_dof_used); !d.finished(); ++d, ++cnt) {
if (cnt != d)
for (size_type q=0; q < Q; ++q) {
V[cnt*Q + q] = V[d*Q + q];
}
}
V.resize(Q*pmf_dof_used.card());
write_dataset_(V, name);
}
}
template<class VECT> void
dx_export::write_sliced_point_data(const VECT& Uslice, std::string name) {
if (!psl_use_merged)
write_dataset_(Uslice, name, false);
else {
base_vector Umerged; smooth_field(Uslice,Umerged);
write_dataset_(Umerged, name, false);
}
}
template<class VECT> void
dx_export::write_dataset_(const VECT& U, std::string name, bool cell_data) {
write_mesh();
objects.push_back(dxObject());
name = default_name(name, int(objects.size()), "gf_field");
objects.back().name = name;
objects.back().mesh = current_mesh_name();
size_type nb_val = 0;
if (cell_data) {
nb_val = psl ? psl->linked_mesh().convex_index().card()
: pmf->linked_mesh().convex_index().card();
} else {
nb_val = psl ? (psl_use_merged ? psl->nb_merged_nodes() : psl->nb_points())
: pmf_dof_used.card();
}
size_type Q = gmm::vect_size(U) / nb_val;
GMM_ASSERT1(gmm::vect_size(U) == nb_val*Q,
"inconsistency in the size of the dataset: "
<< gmm::vect_size(U) << " != " << nb_val << "*" << Q);
os << "\nobject \"" << name << "_data\" class array type float rank ";
if (Q == 1) { os << "0"; } /* scalar data */
else if (Q == 4) { os << "2 shape 2 2"; } /* or 2x2 tensor data */
else if (Q == 9) { os << "2 shape 3 3"; } /* or 2x2 tensor data */
else { os << "1 shape " << Q; } /* fallback: vector data */
os << " items " << nb_val;
if (!ascii) os << " " << endianness() << " binary";
os << " data follows" << endl;
for (size_type i=0; i < nb_val*Q; ++i) {
write_val(float(U[i]));
if (((i+1) % (Q > 1 ? Q : 10)) == 0) write_separ();
}
write_separ();
if (!cell_data)
os << "\n attribute \"dep\" string \"positions\"\n";
else os << "\n attribute \"dep\" string \"connections\"\n";
os << "\n";
if (current_mesh().flags & dxMesh::WITH_EDGES) {
os << "\nobject \"" << name << "_edges\" class field\n"
<< " component \"positions\" value \""
<< name_of_pts_array(current_mesh_name()) << "\"\n"
<< " component \"connections\" value \""
<< name_of_conn_array(name_of_edges_array(current_mesh_name()))
<< "\"\n"
<< " component \"data\" value \"" << name << "_data\"\n";
}
/* write footer */
os << "\nobject \"" << name << "\" class field\n"
<< " component \"positions\" value \""
<< name_of_pts_array(current_mesh_name()) << "\"\n"
<< " component \"connections\" value \""
<< name_of_conn_array(current_mesh_name()) << "\"\n"
<< " component \"data\" value \"" << name << "_data\"\n";
}
/***************************************************************
@brief POS export.
export class to Gmsh post-processing file format.
( http://geuz.org/gmsh )
A pos_export can store multiple scalar/vector/tensor fields.
****************************************************************/
class pos_export {
protected:
std::ostream& os;
char header[256];
std::vector<std::vector<float> > pos_pts;
std::vector<unsigned> pos_cell_type;
std::vector<std::vector<unsigned> > pos_cell_dof;
std::auto_ptr<mesh_fem> pmf;
const stored_mesh_slice *psl;
size_type view;
dim_type dim;
enum { EMPTY, HEADER_WRITTEN, STRUCTURE_WRITTEN, IN_CELL_DATA} state;
std::ofstream real_os;
public:
typedef enum {
POS_PT = 0, //point
POS_LN = 1, //line
POS_TR = 2, //triangles
POS_QU = 3, //quadrangles
POS_SI = 4, //tetrahedra
POS_HE = 5, //hexahedra
POS_PR = 6 //prisms
} pos_cell_types;
pos_export(const std::string& fname);
pos_export(std::ostream& osname);
void set_header(const std::string& s);
void exporting(const mesh& m);
void exporting(const mesh_fem& mf);
void exporting(const stored_mesh_slice& sl);
void write(const mesh& m, const std::string& name="");
void write(const mesh_fem& mf, const std::string& name="");
void write(const stored_mesh_slice& sl, const std::string& name="");
template <class VECT>
void write(const mesh_fem& mf,const VECT& U, const std::string& name);
template <class VECT>
void write(const stored_mesh_slice& sl,const VECT& U, const std::string& name);
private:
void init();
void check_header();
template <class VECT>
void write(const VECT& V, const size_type qdim_v);
template <class VECT>
void write_cell(const int& t, const std::vector<unsigned>& dof,
const VECT& val);
};
template <class VECT>
void pos_export::write(const mesh_fem& mf,const VECT& U,
const std::string& name){
check_header();
exporting(mf);
os << "View \"" << name.c_str() <<"\" {\n";
size_type nb_points = mf.nb_dof()/mf.get_qdim();
size_type qdim_u = gmm::vect_size(U)/nb_points;
if (psl){
std::vector<scalar_type> Uslice(psl->nb_points()*qdim_u);
psl->interpolate(mf, U, Uslice);
qdim_u = gmm::vect_size(Uslice)/psl->nb_points();
write(Uslice, qdim_u);
}else {
std::vector<scalar_type> V(pmf->nb_dof()*qdim_u);
if (&mf != &(*pmf)) {
interpolation(mf, *pmf, U, V);
} else gmm::copy(U,V);
/*for (dal::bv_visitor d(pmf_dof_used); !d.finished(); ++d, ++cnt) {
if (cnt != d)
for (size_type q=0; q < Q; ++q) {
V[cnt*Q + q] = V[d*Q + q];
}
}
V.resize(Q*pmf_dof_used.card());*/
nb_points = pmf->nb_dof()/pmf->get_qdim();
qdim_u = gmm::vect_size(V)/nb_points;
write(V, qdim_u);
}
os << "};\n";
os << "View[" << view << "].ShowScale = 1;\n";
os << "View[" << view << "].ShowElement = 0;\n";
os << "View[" << view << "].DrawScalars = 1;\n";
os << "View[" << view << "].DrawVectors = 1;\n";
os << "View[" << view++ << "].DrawTensors = 1;\n";
}
template <class VECT>
void pos_export::write(const stored_mesh_slice& sl,const VECT& V,
const std::string& name){
check_header();
exporting(sl);
os << "View \"" << name.c_str() <<"\" {\n";
size_type qdim_v = gmm::vect_size(V)/psl->nb_points();
write(V, qdim_v);
os << "};\n";
os << "View[" << view << "].ShowScale = 1;\n";
os << "View[" << view << "].ShowElement = 0;\n";
os << "View[" << view << "].DrawScalars = 1;\n";
os << "View[" << view << "].DrawVectors = 1;\n";
os << "View[" << view++ << "].DrawTensors = 1;\n";
}
template <class VECT>
void pos_export::write(const VECT& V, const size_type qdim_v){
int t;
std::vector<unsigned> cell_dof;
std::vector<scalar_type> cell_dof_val;
for (size_type cell = 0; cell < pos_cell_type.size(); ++cell) {
t = pos_cell_type[cell];
cell_dof = pos_cell_dof[cell];
cell_dof_val.resize(cell_dof.size()*qdim_v, scalar_type(0));
for (size_type i=0; i< cell_dof.size(); ++i)
for (size_type j=0; j< qdim_v; ++j)
cell_dof_val[i*qdim_v+j] = scalar_type(V[cell_dof[i]*qdim_v+j]);
write_cell(t,cell_dof,cell_dof_val);
}
}
template <class VECT>
void pos_export::write_cell(const int& t, const std::vector<unsigned>& dof,
const VECT& val){
size_type qdim_cell = val.size()/dof.size();
size_type dim3D = size_type(-1);
if (1==qdim_cell){
dim3D = size_type(1);
os << "S";
} else if (2==qdim_cell || 3==qdim_cell){
dim3D = size_type(3);
os << "V";
} else if (4<=qdim_cell && qdim_cell<=9){
dim3D = size_type(9);
os << "T";
}
switch (t){
case POS_PT: os << "P("; break; // point
case POS_LN: os << "L("; break; // line
case POS_TR: os << "T("; break; // triangle
case POS_QU: os << "Q("; break; // quadrangle
case POS_SI: os << "S("; break; // tetrahedra (simplex)
case POS_HE: os << "H("; break; // hexahedra
case POS_PR: os << "I("; break; // prism
}
for (size_type i=0; i<dof.size(); ++i){
for(size_type j=0; j<dim; ++j){
if(0!=i || 0!=j) os << ",";
os << pos_pts[dof[i]][j];
}
for (size_type j=dim; j<3; ++j){
os << ",0.00";
}
}
os << "){";
for (size_type i=0; i<dof.size(); ++i){
for(size_type j=0; j<qdim_cell; ++j){
if(0!=i || 0!=j) os << ",";
os << val[i*qdim_cell+j];
}
for (size_type j=qdim_cell; j< dim3D; ++j){
os << ",0.00";
}
}
os << "};\n";
}
} /* end of namespace getfem. */
#endif /* GETFEM_EXPORT_H__ */
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