So the XML Guide says that
That particles are only created with in this domain.
Once particles have been created the dimensions of the domain for simulation are calculated again starting from minimum and maximum positions of the created particles.
When GenCase starts to calculate the minimum and maximum positions of the particles once again, how does it does so ? Could you please provide a rough idea of the algorithm used to do so. I believe, GenCase is cutting of a few domain particles in my geometries.