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.vol files

  • First line: <# of tetrahedra>
  • Remaining lines list of # of maximum volumes:
    <tetrahedron #> <maximum volume>
    ...

A .vol file associates with each tetrahedron a maximum volume which is used for mesh refinement. It is read by TetGen in case the -r switch is used.

As with other file formats, every tetrahedron must be represented, and they must be numbered consecutively. A tetrahedron may be left unconstrained by assigning it a negative maximum volume.