Also assign unique numbers to UCD elements.

Same as the previous commit.

Closes #814.

diff --git a/include/deal.II/grid/grid_out.h b/include/deal.II/grid/grid_out.h
index 79a66489650f403b136e61eb887d53303fe0ae2d..57bbb61e848539add186a92ec40017dbdc14e380 100644 (file)
--- a/include/deal.II/grid/grid_out.h
+++ b/include/deal.II/grid/grid_out.h
@@ -1422,8 +1422,18 @@ private:
    * printed which are on the boundary and which have a boundary indicator not
    * equal to zero, since the latter is the default for boundary faces.
    *
-   * Since cells and faces are continuously numbered, the @p starting_index
-   * for the numbering of the faces is passed also.
+   * Since (in the UCD format) geometric elements are continuously numbered,
+   * this function requires a parameter @p next_element_index providing the
+   * next geometric element number. This index should have a numerical value
+   * equal to one more than the index previously used to write a geometric
+   * element to @p out.
+   *
+   * @returns The next unused geometric element index.
+   *
+   * @warning @p next_element_index should be (at least) one larger than the
+   * current number of triangulation elements (lines, cells, faces) that have
+   * been written to @p out. Visualization programs may not load the saved
+   * file correctly if there are repeated indices.
    *
    * This function unfortunately can not be included in the regular @p
    * write_ucd function, since it needs special treatment for the case
@@ -1432,30 +1442,32 @@ private:
    * call these functions, but the compiler would complain anyway when
    * compiling the function for <tt>dim==1</tt>. Bad luck.
    */
-
-
   template <int dim, int spacedim>
-  void write_ucd_faces (const Triangulation<dim,spacedim> &tria,
-                        const unsigned int        starting_index,
-                        std::ostream             &out) const;
+  unsigned int
+  write_ucd_faces (const Triangulation<dim,spacedim> &tria,
+                   const unsigned int                 next_element_index,
+                   std::ostream                      &out) const;
 
   /**
    * Declaration of the specialization of above function for 1d. Does nothing.
    */
-  void write_ucd_faces (const Triangulation<1,1> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
+  unsigned int
+  write_ucd_faces (const Triangulation<1,1>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
 
   /**
    * Declaration of the specialization of above function for 1d, 2sd. Does
    * nothing.
    */
-  void write_ucd_faces (const Triangulation<1,2> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
-  void write_ucd_faces (const Triangulation<1,3> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
+  unsigned int
+  write_ucd_faces (const Triangulation<1,2>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
+  unsigned int
+  write_ucd_faces (const Triangulation<1,3>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
 
 
   /**
@@ -1463,8 +1475,18 @@ private:
    * printed which are on the boundary and which have a boundary indicator not
    * equal to zero, since the latter is the default for boundary lines.
    *
-   * Since cells, faces and lines are continuously numbered, the @p
-   * starting_index for the numbering of the faces is passed also.
+   * Since (in the UCD format) geometric elements are continuously numbered,
+   * this function requires a parameter @p next_element_index providing the
+   * next geometric element number. This index should have a numerical value
+   * equal to one more than the index previously used to write a geometric
+   * element to @p out.
+   *
+   * @returns The next unused geometric element index.
+   *
+   * @warning @p next_element_index should be (at least) one larger than the
+   * current number of triangulation elements (lines, cells, faces) that have
+   * been written to @p out. Visualization programs may not load the saved
+   * file correctly if there are repeated indices.
    *
    * This function unfortunately can not be included in the regular @p
    * write_ucd function, since it needs special treatment for the case
@@ -1473,44 +1495,48 @@ private:
    * call these functions, but the compiler would complain anyway when
    * compiling the function for <tt>dim==1/2</tt>. Bad luck.
    */
-
-
   template <int dim, int spacedim>
-  void write_ucd_lines (const Triangulation<dim,spacedim> &tria,
-                        const unsigned int        starting_index,
-                        std::ostream             &out) const;
+  unsigned int
+  write_ucd_lines (const Triangulation<dim,spacedim> &tria,
+                   const unsigned int                 next_element_index,
+                   std::ostream                      &out) const;
 
   /**
    * Declaration of the specialization of above function for 1d. Does nothing.
    */
-  void write_ucd_lines (const Triangulation<1,1> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
+  unsigned int
+  write_ucd_lines (const Triangulation<1,1>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
   /**
    * Declaration of the specialization of above function for 1d, 2sd. Does
    * nothing.
    */
-  void write_ucd_lines (const Triangulation<1,2> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
-  void write_ucd_lines (const Triangulation<1,3> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
+  unsigned int
+  write_ucd_lines (const Triangulation<1,2>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
+  unsigned int
+  write_ucd_lines (const Triangulation<1,3>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
 
 
   /**
    * Declaration of the specialization of above function for 2d. Does nothing.
    */
-  void write_ucd_lines (const Triangulation<2,2> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
+  unsigned int
+  write_ucd_lines (const Triangulation<2,2>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
   /**
    * Declaration of the specialization of above function for 2d, 3sd. Does
    * nothing.
    */
-  void write_ucd_lines (const Triangulation<2,3> &tria,
-                        const unsigned int      starting_index,
-                        std::ostream           &out) const;
+  unsigned int
+  write_ucd_lines (const Triangulation<2,3>      &tria,
+                   const unsigned int             next_element_index,
+                   std::ostream                  &out) const;
 
 
   /**

diff --git a/source/grid/grid_out.cc b/source/grid/grid_out.cc
index 280558767e39ce71e2726aab0cbb70797d91cf13..8034377432d8aabe4451ba07cd7588ce00529152 100644 (file)
--- a/source/grid/grid_out.cc
+++ b/source/grid/grid_out.cc
@@ -1190,13 +1190,16 @@ void GridOut::write_ucd (const Triangulation<dim,spacedim> &tria,
       out << '\n';
     }
 
-  // write faces and lines with
-  // non-zero boundary indicator
-  unsigned int next_index = tria.n_active_cells()+1;
+  // write faces and lines with non-zero boundary indicator
+  unsigned int next_element_index = tria.n_active_cells()+1;
   if (ucd_flags.write_faces)
-    write_ucd_faces (tria, next_index, out);
+    {
+      next_element_index = write_ucd_faces (tria, next_element_index, out);
+    }
   if (ucd_flags.write_lines)
-    write_ucd_lines (tria, next_index, out);
+    {
+      next_element_index = write_ucd_lines (tria, next_element_index, out);
+    }
 
   // make sure everything now gets to
   // disk
@@ -2764,7 +2767,7 @@ GridOut::write_msh_lines (const Triangulation<dim,spacedim> &tria,
           &&
           (cell->line(l)->user_flag_set() == false))
         {
-          out << current_element_index << " 1 ";
+          out << next_element_index << " 1 ";
           out << static_cast<unsigned int>(cell->line(l)->boundary_id())
               << ' '
               << static_cast<unsigned int>(cell->line(l)->boundary_id())
@@ -2793,80 +2796,89 @@ GridOut::write_msh_lines (const Triangulation<dim,spacedim> &tria,
 
 
 
-void GridOut::write_ucd_faces (const Triangulation<1> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_faces (const Triangulation<1> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
-void GridOut::write_ucd_faces (const Triangulation<1,2> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_faces (const Triangulation<1,2> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
-void GridOut::write_ucd_faces (const Triangulation<1,3> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_faces (const Triangulation<1,3> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
-void GridOut::write_ucd_lines (const Triangulation<1> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_lines (const Triangulation<1> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
-void GridOut::write_ucd_lines (const Triangulation<1,2> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_lines (const Triangulation<1,2> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
 
-void GridOut::write_ucd_lines (const Triangulation<1,3> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_lines (const Triangulation<1,3> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
 
-void GridOut::write_ucd_lines (const Triangulation<2> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_lines (const Triangulation<2> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
-void GridOut::write_ucd_lines (const Triangulation<2,3> &,
-                               const unsigned int,
-                               std::ostream &) const
+unsigned int
+GridOut::write_ucd_lines (const Triangulation<2,3> &,
+                          const unsigned int next_element_index,
+                          std::ostream &) const
 {
-  return;
+  return next_element_index;
 }
 
 
 
 template <int dim, int spacedim>
-void GridOut::write_ucd_faces (const Triangulation<dim, spacedim> &tria,
-                               const unsigned int        starting_index,
-                               std::ostream             &out) const
+unsigned int
+GridOut::write_ucd_faces (const Triangulation<dim,spacedim> &tria,
+                          const unsigned int                 next_element_index,
+                          std::ostream                      &out) const
 {
+  unsigned int current_element_index = next_element_index;
   typename Triangulation<dim,spacedim>::active_face_iterator face, endf;
-  unsigned int index=starting_index;
 
   for (face=tria.begin_active_face(), endf=tria.end_face();
        face != endf; ++face)
     if (face->at_boundary() &&
         (face->boundary_id() != 0))
       {
-        out << index << "  "
+        out << current_element_index << "  "
             << static_cast<unsigned int>(face->boundary_id())
             << "  ";
         switch (dim)
@@ -2885,17 +2897,20 @@ void GridOut::write_ucd_faces (const Triangulation<dim, spacedim> &tria,
           out << face->vertex_index(GeometryInfo<dim-1>::ucd_to_deal[vertex])+1 << ' ';
         out << '\n';
 
-        ++index;
+        ++current_element_index;
       }
+  return current_element_index;
 }
 
 
 
 template <int dim, int spacedim>
-void GridOut::write_ucd_lines (const Triangulation<dim, spacedim> &tria,
-                               const unsigned int        starting_index,
-                               std::ostream             &out) const
+unsigned int
+GridOut::write_ucd_lines(const Triangulation<dim, spacedim> &tria,
+                         const unsigned int                  next_element_index,
+                         std::ostream                       &out) const
 {
+  unsigned int current_element_index = next_element_index;
   // save the user flags for lines so
   // we can use these flags to track
   // which ones we've already taken
@@ -2907,7 +2922,6 @@ void GridOut::write_ucd_lines (const Triangulation<dim, spacedim> &tria,
   .clear_user_flags_line ();
 
   typename Triangulation<dim, spacedim>::active_cell_iterator cell, endc;
-  unsigned int index=starting_index;
 
   for (cell=tria.begin_active(), endc=tria.end();
        cell != endc; ++cell)
@@ -2918,7 +2932,7 @@ void GridOut::write_ucd_lines (const Triangulation<dim, spacedim> &tria,
           &&
           (cell->line(l)->user_flag_set() == false))
         {
-          out << index << "  "
+          out << current_element_index << "  "
               << static_cast<unsigned int>(cell->line(l)->boundary_id())
               << "  line    ";
           // note: vertex numbers in ucd format are 1-base
@@ -2930,7 +2944,7 @@ void GridOut::write_ucd_lines (const Triangulation<dim, spacedim> &tria,
           // move on to the next line
           // but mark the current one
           // as taken care of
-          ++index;
+          ++current_element_index;
           cell->line(l)->set_user_flag();
         }
 
@@ -2938,6 +2952,7 @@ void GridOut::write_ucd_lines (const Triangulation<dim, spacedim> &tria,
   // flags for the lines
   const_cast<dealii::Triangulation<dim,spacedim>&>(tria)
   .load_user_flags_line (line_flags);
+  return current_element_index;
 }
 
 

diff --git a/tests/grid/grid_out_03.output b/tests/grid/grid_out_03.output
index 53428aa5d237ac4fc1f029d021039504c4c104f8..c8d636be9fcc69e519eadd5c7053fa917ca6659f 100644 (file)
--- a/tests/grid/grid_out_03.output
+++ b/tests/grid/grid_out_03.output
@@ -18,4 +18,4 @@
 8  1.0 1.0 1.0
 1 0 hex     1 2 6 5 3 4 8 7 
 2  2  quad    5 6 8 7 
-2  1  line    1 3 
+3  1  line    1 3

diff --git a/tests/grid/grid_out_05.output b/tests/grid/grid_out_05.output
index 53428aa5d237ac4fc1f029d021039504c4c104f8..c8d636be9fcc69e519eadd5c7053fa917ca6659f 100644 (file)
--- a/tests/grid/grid_out_05.output
+++ b/tests/grid/grid_out_05.output
@@ -18,4 +18,4 @@
 8  1.0 1.0 1.0
 1 0 hex     1 2 6 5 3 4 8 7 
 2  2  quad    5 6 8 7 
-2  1  line    1 3 
+3  1  line    1 3

diff --git a/tests/grid/grid_output_input.output b/tests/grid/grid_output_input.output
index 4987eee0825e8aa8a7fd1b60f350411225adc3ae..e2e02c0aff377cb6bf2502a882593a287f32fb48 100644 (file)
--- a/tests/grid/grid_output_input.output
+++ b/tests/grid/grid_output_input.output
@@ -241,86 +241,86 @@ DEAL:3d::Writing refined from constructor
 94  1  quad    96 25 81 136 
 95  1  quad    95 136 56 16 
 96  1  quad    136 81 9 56 
-65  1  line    25 81 
-66  1  line    82 129 
-67  1  line    25 82 
-68  1  line    81 129 
-69  1  line    26 83 
-70  1  line    82 26 
-71  1  line    129 83 
-72  1  line    81 9 
-73  1  line    129 49 
-74  1  line    9 49 
-75  1  line    83 10 
-76  1  line    49 10 
-77  1  line    84 130 
-78  1  line    26 84 
-79  1  line    83 130 
-80  1  line    27 85 
-81  1  line    84 27 
-82  1  line    130 85 
-83  1  line    130 50 
-84  1  line    10 50 
-85  1  line    85 11 
-86  1  line    50 11 
-87  1  line    86 131 
-88  1  line    27 86 
-89  1  line    85 131 
-90  1  line    28 87 
-91  1  line    86 28 
-92  1  line    131 87 
-93  1  line    131 51 
-94  1  line    11 51 
-95  1  line    87 12 
-96  1  line    51 12 
-97  1  line    88 132 
-98  1  line    28 88 
-99  1  line    87 132 
-100  1  line    29 89 
-101  1  line    88 29 
-102  1  line    132 89 
-103  1  line    132 52 
-104  1  line    12 52 
-105  1  line    89 13 
-106  1  line    52 13 
-107  1  line    90 133 
-108  1  line    29 90 
-109  1  line    89 133 
-110  1  line    30 91 
-111  1  line    90 30 
-112  1  line    133 91 
-113  1  line    133 53 
-114  1  line    13 53 
-115  1  line    91 14 
-116  1  line    53 14 
-117  1  line    92 134 
-118  1  line    30 92 
-119  1  line    91 134 
-120  1  line    31 93 
-121  1  line    92 31 
-122  1  line    134 93 
-123  1  line    134 54 
-124  1  line    14 54 
-125  1  line    93 15 
-126  1  line    54 15 
-127  1  line    94 135 
-128  1  line    31 94 
-129  1  line    93 135 
-130  1  line    32 95 
-131  1  line    94 32 
-132  1  line    135 95 
-133  1  line    135 55 
-134  1  line    15 55 
-135  1  line    95 16 
-136  1  line    55 16 
-137  1  line    96 136 
-138  1  line    32 96 
-139  1  line    95 136 
-140  1  line    96 25 
-141  1  line    136 81 
-142  1  line    136 56 
-143  1  line    16 56 
-144  1  line    56 9 
+97  1  line    25 81
+98  1  line    82 129
+99  1  line    25 82
+100  1  line    81 129
+101  1  line    26 83
+102  1  line    82 26
+103  1  line    129 83
+104  1  line    81 9
+105  1  line    129 49
+106  1  line    9 49
+107  1  line    83 10
+108  1  line    49 10
+109  1  line    84 130
+110  1  line    26 84
+111  1  line    83 130
+112  1  line    27 85
+113  1  line    84 27
+114  1  line    130 85
+115  1  line    130 50
+116  1  line    10 50
+117  1  line    85 11
+118  1  line    50 11
+119  1  line    86 131
+120  1  line    27 86
+121  1  line    85 131
+122  1  line    28 87
+123  1  line    86 28
+124  1  line    131 87
+125  1  line    131 51
+126  1  line    11 51
+127  1  line    87 12
+128  1  line    51 12
+129  1  line    88 132
+130  1  line    28 88
+131  1  line    87 132
+132  1  line    29 89
+133  1  line    88 29
+134  1  line    132 89
+135  1  line    132 52
+136  1  line    12 52
+137  1  line    89 13
+138  1  line    52 13
+139  1  line    90 133
+140  1  line    29 90
+141  1  line    89 133
+142  1  line    30 91
+143  1  line    90 30
+144  1  line    133 91
+145  1  line    133 53
+146  1  line    13 53
+147  1  line    91 14
+148  1  line    53 14
+149  1  line    92 134
+150  1  line    30 92
+151  1  line    91 134
+152  1  line    31 93
+153  1  line    92 31
+154  1  line    134 93
+155  1  line    134 54
+156  1  line    14 54
+157  1  line    93 15
+158  1  line    54 15
+159  1  line    94 135
+160  1  line    31 94
+161  1  line    93 135
+162  1  line    32 95
+163  1  line    94 32
+164  1  line    135 95
+165  1  line    135 55
+166  1  line    15 55
+167  1  line    95 16
+168  1  line    55 16
+169  1  line    96 136
+170  1  line    32 96
+171  1  line    95 136
+172  1  line    96 25
+173  1  line    136 81
+174  1  line    136 56
+175  1  line    16 56
+176  1  line    56 9
 DEAL:3d::Read coarse grid
 DEAL:3d::Writing refined from file
 144 176 0 0 0
@@ -564,83 +564,83 @@ DEAL:3d::Writing refined from file
 94  1  quad    96 25 81 136 
 95  1  quad    95 136 56 16 
 96  1  quad    136 81 9 56 
-65  1  line    25 81 
-66  1  line    82 129 
-67  1  line    25 82 
-68  1  line    81 129 
-69  1  line    26 83 
-70  1  line    82 26 
-71  1  line    129 83 
-72  1  line    81 9 
-73  1  line    129 49 
-74  1  line    9 49 
-75  1  line    83 10 
-76  1  line    49 10 
-77  1  line    84 130 
-78  1  line    26 84 
-79  1  line    83 130 
-80  1  line    27 85 
-81  1  line    84 27 
-82  1  line    130 85 
-83  1  line    130 50 
-84  1  line    10 50 
-85  1  line    85 11 
-86  1  line    50 11 
-87  1  line    86 131 
-88  1  line    27 86 
-89  1  line    85 131 
-90  1  line    28 87 
-91  1  line    86 28 
-92  1  line    131 87 
-93  1  line    131 51 
-94  1  line    11 51 
-95  1  line    87 12 
-96  1  line    51 12 
-97  1  line    88 132 
-98  1  line    28 88 
-99  1  line    87 132 
-100  1  line    29 89 
-101  1  line    88 29 
-102  1  line    132 89 
-103  1  line    132 52 
-104  1  line    12 52 
-105  1  line    89 13 
-106  1  line    52 13 
-107  1  line    90 133 
-108  1  line    29 90 
-109  1  line    89 133 
-110  1  line    30 91 
-111  1  line    90 30 
-112  1  line    133 91 
-113  1  line    133 53 
-114  1  line    13 53 
-115  1  line    91 14 
-116  1  line    53 14 
-117  1  line    92 134 
-118  1  line    30 92 
-119  1  line    91 134 
-120  1  line    31 93 
-121  1  line    92 31 
-122  1  line    134 93 
-123  1  line    134 54 
-124  1  line    14 54 
-125  1  line    93 15 
-126  1  line    54 15 
-127  1  line    94 135 
-128  1  line    31 94 
-129  1  line    93 135 
-130  1  line    32 95 
-131  1  line    94 32 
-132  1  line    135 95 
-133  1  line    135 55 
-134  1  line    15 55 
-135  1  line    95 16 
-136  1  line    55 16 
-137  1  line    96 136 
-138  1  line    32 96 
-139  1  line    95 136 
-140  1  line    96 25 
-141  1  line    136 81 
-142  1  line    136 56 
-143  1  line    16 56 
-144  1  line    56 9 
+97  1  line    25 81
+98  1  line    82 129
+99  1  line    25 82
+100  1  line    81 129
+101  1  line    26 83
+102  1  line    82 26
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