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Forum: Event and Track Management
Re: None Pre and PostStep point (jerome roccaz)
Date: 12 Feb, 2003
From: Gumplinger Peter <Gumplinger Peter>

Hi,

GEANT4 does not return a valid PostStepPoint 'pointer' when the track is at the 'WorldBoundary'. Please, check if the pointer exists before using it in your user method.

To all my G4 collaborators who are reading this, let me remind you of my suggestion to always return a valid PostStepPoint even at the 'WorldBoundary' so that we don't have poor users falling into this trap again and again!

(II) What about the idea of returning at valid PostStepPoint pointer at the world boundary, pointing to a 'OutOfThisWorldVolume'???

Peter

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