|Message: How to get the normal vector of crossing boundary?||Not Logged In (login)|
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In optical photon, UCN simulation, and phonon simulation, a unit vector is got from the nearest surface to the post-step point at the reflection.
However, this would be wrong when the post-step point is not near to the crossing boundary. Are there any way to get the normal vector of crossing boundary?
Thank you, Yuto
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