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Question

How to obtain surface normal vectors for non-sequential objects?

  • March 21, 2026
  • 1 reply
  • 44 views

Mike.Jones
En-Lightened
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I need the L,M,N values for vectors normal to plane surfaces in non-sequential mode.  I have tried many different ways, and just haven’t found the magic decoder ring yet.  How can I get surface normal components for plane faces on objects in non-sequential mode?

1 reply

MichaelH
Ansys Staff
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  • Ansys Staff
  • March 30, 2026

Hey Mike,

What have you tried so far?  

Are you just looking for the Object’s local vertex coordinates?  If so, can you use NSRM to get the global rotation matrix and calculate the local vertex coordinate (would be the same for all points on the planar surface)/

Can you use a single non-sequential ray and NSRA with data = 7/8/9?

Can you save a ZRD file and use the Normal section of the Ray Database Viewer?