Oh and I took a look at this but it doesn't work well for me for some reason. They're just pointing in various directions. And I have a good uv map: https://vimeo.com/46081934
On Wed, Sep 18, 2013 at 5:39 PM, Kris Rivel <[email protected]> wrote: > Ugh, sounds like its going to be a head trip for me :-/ The deformed mesh > is a polymesh tube. I can't change that. But maybe I can have a nurbs > tube deformed along the curve too and extract its values? I'm fine with > getting point normals but not sure the best way to translate and apply it. > > Kris > > > On Wed, Sep 18, 2013 at 5:33 PM, Alok Gandhi <[email protected]>wrote: > >> They wont because in effect what you are doing is just taking the normal, >> World Yup and crossing them which will result in a vector perpendicular to >> both the normal and the Yup. So during a bend, this result vector is not >> tangential to the surface. >> >> You definitely need a vector which is tangential to the surface at the >> point where the normal is coming out of the surface. >> >> I would suggest looking in the approach of getting neighbour points >> closest to the normal location and generating a vector from that instead of >> using a cross product at all. Though you have to take care of the logic >> around edge vertex. But it can be a good start. >> >> >> On Wed, Sep 18, 2013 at 5:09 PM, Vincent Fortin <[email protected]>wrote: >> >>> Do you want the axis perpendicular to the normal? If so use a cross >>> product, plug the normal in the first input and try something like 0,1,0 >>> for the second input. >>> >>> >>> On Wed, Sep 18, 2013 at 4:05 PM, Kris Rivel <[email protected]> wrote: >>> >>>> I'm trying to make a simple setup where I can align particles along a >>>> deformed/animated surface based on another vector. No problem aligning >>>> them on their normal but I want them to all flow in the same direction >>>> along their other axis...all point forward. Is there anyway to do this >>>> with a polymesh? Maybe through UV data? >>>> >>>> Kris >>>> >>>> -------------------------- >>>> To unsubscribe: mail [email protected] with >>>> subject "unsubscribe" and reply to the confirmation email. >>>> >>> >>> >>> -------------------------- >>> To unsubscribe: mail [email protected] with >>> subject "unsubscribe" and reply to the confirmation email. >>> >> >> >> >> -- >> >> -------------------------- >> To unsubscribe: mail [email protected] with >> subject "unsubscribe" and reply to the confirmation email. >> > >
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