How to select a set of nodes on a vector defined by N1, N2, N3 and basepoint?

Question

If N1 is 100(node id)/ N2 is 101(node id)/ N3 is 102(node id).... Basepoint is 'userdefined', tolerance 0.1 / normal to plane

how to write a code to select a list of nodes falling on the defined vector?

Thanks in advance!

Sathish_21542 · Answer

Hi Vipin,

Thanks!

Its working

vipin_22401 · Answer

Hi Sathish,

you can find a proc for vector normals from 3 nodes in following thread:

https://community.altair.com/community?id=community_question&sys_id=0396447a1b2bd0908017dc61ec4bcb47

use the proc to find vector normals:

set vecNormals [NormalFrmPlane $N1 $N2 $N3]

set baseCords [lindex [hm_nodevalue $baseNode] 0]

substitute these values in *createmark command :)

*createmark nodes 1 'on plane' {*}$baseCords {*}$vecNormals 0.1 0 0

Sathish_21542 · Answer

Hi Vipin,

Thanks for the reply!

I have came through this 'on plane' option. But the problem is I have the input N1, N2, N3 and basepoint only. Can you help me with the codes for extracting base coordinates and vector normals from the input?

Thanks!