accessing attribute using poppoint

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Dean_19: Member; 319 posts; Joined:; Offline

June 30, 2008 9:13 a.m.

You fellow Houdini lovers,

Why can't I echo out my attribute via the textport using the poppoint expression? It returns 0 every time…?

Any ideas?

Cheers,

Dean.

Attachments:
poppoint.hip (38.1 KB)


Gerome: Member; 85 posts; Joined: July 2005; Offline

June 30, 2008 10:14 a.m.

Well it says in the exhelp that only works in a pop node. So it may be the reason why it doesnt work in the Textport. I modified your hip file by adding a new attr POP and using the poppoint expr and if you check the spreadsheet, it will work.

Attachments:
poppoint_168.hip (42.1 KB)


Dean_19: Member; 319 posts; Joined:; Offline

June 30, 2008 10:19 a.m.

Someone said that to me but surely if you have cd'd into a pop node within the textport that fulfills that requirments? You're echoing from the pop node, no?


Ondrej: Staff; 1072 posts; Joined: July 2005; Offline

July 2, 2008 9:46 a.m.

Dean_19
Someone said that to me but surely if you have cd'd into a pop node within the textport that fulfills that requirments? You're echoing from the pop node, no?

No, poppoint can only be executed while cooking a POP node. POP nodes, unlike SOP nodes, do not contain a copy of the geometry, so unless it's being cooked, a POP node has no knowledge about the geometry that it might have processed.


Dean_19: Member; 319 posts; Joined:; Offline

July 2, 2008 9:52 a.m.

Ah that makes sense, seeing as a pop network is only really ‘there’ and accessable when it's currently being cooked.

Thanks!

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