forked from lijiext/lammps
69 lines
1.8 KiB
Plaintext
69 lines
1.8 KiB
Plaintext
compute smd/triangle/mesh/vertices
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==================================
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Syntax
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""""""
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.. parsed-literal::
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compute ID group-ID smd/triangle/mesh/vertices
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* ID, group-ID are documented in :doc:`compute <compute>` command
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* smd/triangle/mesh/vertices = style name of this compute command
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Examples
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""""""""
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.. parsed-literal::
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compute 1 all smd/triangle/mesh/vertices
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Description
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"""""""""""
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Define a computation that returns the coordinates of the vertices
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corresponding to the triangle-elements of a mesh created by the `fix smd/wall_surface <ls_>`_.
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See `this PDF guide <USER/smd/SMD_LAMMPS_userguide.pdf>`_ to using Smooth
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Mach Dynamics in LAMMPS.
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**Output info:**
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This compute returns a per-particle vector of vectors, which can be
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accessed by any command that uses per-particle values from a compute as
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input. See :ref:`How-to discussions, section 6.15 <howto_15>`
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for an overview of LAMMPS output options.
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The per-particle vector has nine entries, (x1/y1/z1), (x2/y2/z2), and
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(x3/y3/z3) corresponding to the first, second, and third vertex of
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each triangle.
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It is only meaningful to use this compute for a group of particles
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which is created via the `fix smd/wall_surface <ls_>`_ command.
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The output of this compute can be used with the dump2vtk_tris tool to
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generate a VTK representation of the smd/wall_surace mesh for
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visualization purposes.
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The values will be given in :doc:`units <units>` of distance.
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Restrictions
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""""""""""""
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This compute is part of the USER-SMD package. It is only enabled if
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LAMMPS was built with that package. See the :ref:`Making LAMMPS <start_3>` section for more info.
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Related commands
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""""""""""""""""
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:doc:`compute smd/move/tri/surf <fix_smd_move_triangulated_surface>`,
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`compute smd/wall/surface <ls_>`_
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**Default:** none
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.. _lws: http://lammps.sandia.gov
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.. _ld: Manual.html
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.. _lc: Section_commands.html#comm
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