From 7010236e26bed83db7f063e8aa2f358858fd5a3d Mon Sep 17 00:00:00 2001
From: sjplimp N is the number of sub-particles in the body particle. M = 3*N. The
integer line has a single value N. The floating point line(s) list
@@ -133,24 +133,24 @@ the coordinates of the N sub-particles (x1 to zN) as 3N values on as
many lines as required. Note that this in not N lines, but 10 values
per line; see the read_data command for details. The
coordinates of each sub-particle are specified as its x,y,z
-displacement from the center-of-mass of the body particle, which is
-specified as its coordinates in the Atoms section of the data file.
+displacement from the center-of-mass of the body particle, which in
+turn is given in the Atoms section of the data file.
The pair_style body command can be used with this
body style to compute body/body and body/non-body interactions.
For output purposes via the compute body/local and dump local
-commands, this body style produces one datum for each sub-particle in
-a body particle. The datum has 3 values:
+ For output purposes via the compute
+body/local and dump local
+commands, this body style produces one datum for each of the N
+sub-particles in a body particle. The datum has 3 values:
1 = x position of sub-particle
+1 = x position of sub-particle
2 = y position of sub-particle
-3 = z position of sub-particle
-
These are the current position of the sub-particle within the +3 = z position of sub-particle + +
These values are the current position of the sub-particle within the simulation domain, not a displacement from the center-of-mass (COM) of the body particle itself. These values are calculated using the -current COM and orientiation of the body particle, and the -displacement of the sub-particle from the COM. +current COM and orientiation of the body particle.