If "o" is the origin of the new UCS and "p" is the "important point" (both expressed in WCS), this is how you canThank you very much for that code ; I did it using the AutoLISP built in function angle , then / 2 ;
get the orientation of the new UCS axis:
<snip>
I know nothing about Iso Lines or how you do it, but if you explain a little more, i think it can be done by lisp.
If "o" is the origin of the new UCS and "p" is the "important point" (both expressed in WCS), this is how you canThis looks excelent --
get the orientation of the new UCS axis:Code - Auto/Visual Lisp: [Select]I know nothing about Iso Lines or how you do it, but if you explain a little more, i think it can be done by lisp.
;n = unit vector o->p <snip> ;New UCS definition )
? Cannot find info on :LMGTFY (http://lmgtfy.com/?q=site%3Atheswamp.org+cross+product)
unv
m2p
v*v
?
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Vectors Yea !
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