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region command


region ID style args 


region sph sphere 0 0 0 10.0
region cell box 0 0 0 4 2 2 


Define a simple geometric region as a surface. Similar to triangulated surfaces, the region surface can be used as a boundary for 3d particles or as a surface on which 2d particles are located and move.

The ID of a region can contain alphanumeric characters and underscores and dashes.

The plane style defines an infinite plane which should be axis-aligned if the simulation box is periodic. The cylinder style defines an infinite open-ended axis-aligned cylinder.


The bin command must be used before defining a region.

This command can only be used for spatial simulations.

Related commands:


Default: none