diff --git a/doc/src/Howto_body.rst b/doc/src/Howto_body.rst index 0588e079d0..23d0e1019d 100644 --- a/doc/src/Howto_body.rst +++ b/doc/src/Howto_body.rst @@ -105,6 +105,17 @@ particles of different styles The pair styles currently defined for use with specific body styles are listed in the sections below. +Note that for all the body styles, if the data file defines a general +triclinic box, then the orientation of the body particle and its +corresponding 6 moments of inertia and other orientation-dependent +values should reflect the fact the body is defined withing a general +triclinic box with edge vectors **A**,**B**,**C**. LAMMPS will rotate +the box to convert it to a restricted triclinic box. This operation +will also rotate the orientation of the body particles. See the +:doc:`Howto triclinic ` doc page for more details. +The sections below highlight the orientation-dependent values specific +to each body style. + ---------- **Specifics of body style nparticle:** @@ -161,14 +172,10 @@ center-of-mass position of the particle is specified by the x,y,z values in the *Atoms* section of the data file, as is the total mass of the body particle. -If the data file defines a general triclinic box, then the orientation -of the body particle and its corresponding 6 moments of inertia and -sub-particle displacements should reflect the fact the body is defined -withing a general triclinic box with edge vectors **A**,**B**,**C**. -LAMMPS will rotate the box to convert it to a restricted triclinic -box. This operation will also rotate the orientation of the body -particles. See the :doc:`Howto triclinic ` doc page -for more details. +Note that if the data file defines a general triclinic simulation box, +these sub-particle displacements are orientation-dependent and, as +mentioned above, should reflect the body particle's orientation within +the general triclinic box. The :doc:`pair_style body/nparticle ` command can be used with this body style to compute body/body and body/non-body interactions. @@ -281,14 +288,10 @@ A disk, whose diameter is 3.0, mass 1.0, is specified as follows: 0 0 0 3.0 -If the data file defines a general triclinic box, then the orientation -of the body particle and its corresponding 6 moments of inertia and -polygon vertex displacements should reflect the fact the body is -defined withing a general triclinic box with edge vectors -**A**,**B**,**C**. LAMMPS will rotate the box to convert it to a -restricted triclinic box. This operation will also rotate the -orientation of the body particles. See the :doc:`Howto triclinic -` doc page for more details. +Note that if the data file defines a general triclinic simulation box, +these polygon vertex displacements are orientation-dependent and, as +mentioned above, should reflect the body particle's orientation within +the general triclinic box. The :doc:`pair_style body/rounded/polygon ` command can be used with this body style to compute body/body @@ -456,14 +459,10 @@ A sphere whose diameter is 3.0 and mass 1.0, is specified as follows: The number of edges and faces for a rod or sphere must be listed, but is ignored. -If the data file defines a general triclinic box, then the orientation -of the body particle and its corresponding 6 moments of inertia and -polyhedron vertex displacements should reflect the fact the body is -defined withing a general triclinic box with edge vectors -**A**,**B**,**C**. LAMMPS will rotate the box to convert it to a -restricted triclinic box. This operation will also rotate the -orientation of the body particles. See the :doc:`Howto triclinic -` doc page for more details. +Note that if the data file defines a general triclinic simulation box, +these polyhedron vertex displacements are orientation-dependent and, +as mentioned above, should reflect the body particle's orientation +within the general triclinic box. The :doc:`pair_style body/rounded/polhedron ` command can be used with this body