31 May 2024 10:29:50 AM

TRIANGULATION_T3_TO_T4
  C++ version:
  Read a 3-node T3 triangulation and
  write out a 4-node T4 triangulation.

  Read a dataset of NODE_NUM_T3 points in 2 dimensions.
  Read an associated triangulation dataset of ELEMENT_NUM 
  triangles which uses 3 nodes per triangle.

  Create new nodes which are triangle centroids,
  generate new node and triangulation data for
  4-node elements, and write them out.

  Compiled on May 31 2024 at 10:29:50.

  Read the header of "example_nodes.txt".

  Spatial dimension DIM_NUM = 2
  Number of nodes NODE_NUM_T3  = 20

  Read the data in "example_nodes.txt".

  Portion of coordinate data from file:

  Row:       1             2       
  Col

    1              0             0
    2              1             0
    3              2             0
    4              3             0
    5              4             0

  Read the header of "example_elements.txt".

  Triangle order ELEMENT_ORDER_T3 = 3
  Number of elements ELEMENT_NUM  = 24

  Read the data in "example_elements.txt".

  Portion of data read from file:

  Row:      1       2       3  
  Col

    1       6       1       2  
    2       7       6       2  
    3       7      11       6  
    4      12      11       7  
    5      16      11      12  
    6      16      12      17  
    7       7       2       3  
    8       8       7       3  
    9       8      12       7  
   10      13      12       8  

MESH_BASE_ZERO:
  The element indexing appears to be 1-based!
  This will be converted to 0-based.

  ELEMENT_NODE_T4

  Row:      1       2       3       4  
  Col

    1       5       0       1      20  
    2       6       5       1      21  
    3       6      10       5      22  
    4      11      10       6      23  
    5      15      10      11      24  
    6      15      11      16      25  
    7       6       1       2      26  
    8       7       6       2      27  
    9       7      11       6      28  
   10      12      11       7      29  
   11      16      11      12      30  
   12      16      12      17      31  
   13       7       2       3      32  
   14       8       7       3      33  
   15       8      12       7      34  
   16      13      12       8      35  
   17      17      12      13      36  
   18      17      13      18      37  
   19       8       3       4      38  
   20       9       8       4      39  
   21       9      13       8      40  
   22      14      13       9      41  
   23      18      13      14      42  
   24      18      14      19      43  

  NODE_XY_T4:

  Row:       1             2       
  Col

    1              0             0
    2              1             0
    3              2             0
    4              3             0
    5              4             0
    6              0             1
    7              1             1
    8              2             1
    9              3             1
   10              4             1
   11              0             2
   12              1             2
   13              2             2
   14              3             2
   15              4             2
   16              0             3
   17              1             3
   18              2             3
   19              3             3
   20              4             3
   21           -nan  5.53354e-322
   22        1.33333      0.333333
   23        2.66667      0.666667
   24        1.33333       1.33333
   25        2.66667       1.66667
   26        1.33333       2.33333
   27       0.333333      0.333333
   28       0.666667      0.666667
   29       0.333333       1.33333
   30       0.666667       1.66667
   31       0.333333       2.33333
   32       0.666667       2.66667
   33        1.33333      0.333333
   34        1.66667      0.666667
   35        1.33333       1.33333
   36        1.66667       1.66667
   37        1.33333       2.33333
   38        1.66667       2.66667
   39        2.33333      0.333333
   40        2.66667      0.666667
   41        2.33333       1.33333
   42        2.66667       1.66667
   43        2.33333       2.33333
   44        2.66667       2.66667

  Wrote the T4 node data to "example_t4_nodes.txt".
  Wrote the T4 element data to "example_t4_elements.txt".

TRIANGULATION_T3_TO_T4:
  Normal end of execution.

31 May 2024 10:29:50 AM