[hellp] can't use attrib promoted to detail level

Forums Houdini Indie and Apprentice [hellp] can't use attrib promoted to detail level

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oat: Member; 479 posts; Joined: Dec. 2009; Offline

Dec. 5, 2011 10:37 p.m.

I create a new detail level attrib “rms” by promoting the “root mean square” of a prim level attrib “attrib”.

However, when I try to create a new detail level attrib “rms_sqr” which is the square of “rms” using the hscript “detail”, it didn't work:

pow(detail(opinput(“.”,0), 0, “rms”, 0), 2)

can anybody kindly help to tell me why it didn't work and advise a solution?

thank you very much!

Ji

Attachments:
entropy_v007.hipnc (152.1 KB)
1.PNG (69.4 KB)


graham: Member; 1908 posts; Joined: Nov. 2006; Online

Dec. 5, 2011 11:02 p.m.

The detail() expression only takes 3 arguments, not 4. You need to remove your first 0 arg.
pow(detail(opinput(“.”,0), “rms”, 0), 2)

Graham Thompson, Technical Artist @ Rockstar Games


oat: Member; 479 posts; Joined: Dec. 2009; Offline

Dec. 5, 2011 11:09 p.m.

thanks, graham!

However, it still doesn't work following ur suggestion

is it because that the “rms” attrib is not “mapped”?

looking forward for your advise!

Ji

Attachments:
2.PNG (56.3 KB)


graham: Member; 1908 posts; Joined: Nov. 2006; Online

Dec. 5, 2011 11:15 p.m.

You are using opinput() when you should be using opinputpath(). The name of the first input node isn't valid for the expression, you need a proper path.

Graham Thompson, Technical Artist @ Rockstar Games


oat: Member; 479 posts; Joined: Dec. 2009; Offline

Dec. 5, 2011 11:23 p.m.

thank you very much, graham!

careless me ….

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