*.tri

• .tri file is mesh definition file. For the finite element method, the mesh structure is constructed by triangular mesh. Usually there is only 1 tri file for different bias. The format is

Node1 node2 node3    ->element 1
Nodexx1 nodexx2 nodexx3    ->element 2
...
...
...
...
Nodexx1 nodexx2 nodexx3    ->element N

For example: If we have total N elelments

1 2 1233
2 1233 1234
3 1234 4
3 1234 1235
...
... 
...