Particles sourced outside of the model can sometimes be placed in the implicit complement. Once transport begins, this is a problem as the distance to boundary could be inf depending on the direction. Given that the sampled distance to collision is also going to be inf, we may end up attempting to perform a collision in a void material.
Particles sourced outside of the model can sometimes be placed in the implicit complement. Once transport begins, this is a problem as the distance to boundary could be
infdepending on the direction. Given that the sampled distance to collision is also going to beinf, we may end up attempting to perform a collision in a void material.