extracttransform node work on line , the orient is jitter

Forums Technical Discussion extracttransform node work on line , the orient is jitter

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6cbb21962a714a9da449b4910: Member; 5 posts; Joined: Nov. 2018; Offline

Oct. 18, 2023 11:13 p.m.

as you see.

Attachments:
20231019.gif (79.6 KB)
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tamte: Member; 8598 posts; Joined: July 2007; Offline

Oct. 19, 2023 3:04 a.m.

your geo is a line, you can;'t get stable orient from comparing 2 lines, you need at least 3 points that don't lie on the same line

Tomas Slancik
FX Supervisor
Method Studios, NY


6cbb21962a714a9da449b4910: Member; 5 posts; Joined: Nov. 2018; Offline

Oct. 19, 2023 3:53 a.m.

this full

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6cbb21962a714a9da449b4910: Member; 5 posts; Joined: Nov. 2018; Offline

Oct. 19, 2023 3:55 a.m.

tamte
your geo is a line, you can;'t get stable orient from comparing 2 lines, you need at least 3 points that don't lie on the same line

the's the flie and picture; and when ptnums is 7 ,it's also append

Edited by 6cbb21962a714a9da449b4910 - Oct. 19, 2023 03:58:59


animatrix_: Member; 4531 posts; Joined: Feb. 2012; Offline

Oct. 19, 2023 3:58 a.m.

Hi,

As tamte said a line is not enough to define a unique transformation. If all you have is a line, you can try using an up vector to create a stable transformation.

Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com]

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