Polyframe generated normals change direction with scale

Forums Technical Discussion Polyframe generated normals change direction with scale

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adrianl: Member; 9 posts; Joined: 4月 2016; Offline

2020年3月31日 14:07

Hello,
I have an issue with the normals that are generated by the polyframe node changing direction when part of the curve is scaled. Not sure what's causing this issue or how to fixed it.

I attached a test scene as it's pretty hard to explain in text.

Thanks!

Attachments:
PolyframeIssue.hip (110.8 KB)
polyframe_issue_gif.gif (2.9 MB)


vusta: Member; 555 posts; Joined: 2月 2017; Offline

2020年3月31日 19:10

here…added a reverse, polyframe so that BOTH curves are consistent with N in the merge

then…the crucial detail: in your clean, do NOT remove the N

Attachments:
NFix.gif (358.6 KB)
vu_PolyframeIssue_Fix.hiplc (107.9 KB)


zengchen: Member; 77 posts; Joined: 2月 2017; Offline

2020年3月31日 23:00

please use orientation along curve SOP in Houdini 18
poly frame can generate many types of frame but except curve
I often use poly frame SOP to generate frame from UV or other attrib, but it is not good at generate frame of curve

Edited by zengchen - 2020年4月1日 00:17:21

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