WillA

WillA

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sop attributewrangle "detail" attribute to CHOPS fetch 2022年11月20日0:35

Houdini19.0.589
I creating a custom "Detail" attribute with the attributewrangle sop VEXpression.
I'm trying to use the chopnet fetchparameters chop node to acquire the "Detail" attribute value.
I'm using a "Detail" attribute because only one value is needed per frame.
Its not working. I get an error message "The specified path XVAL is invalid".

The chops fetch node can acquire built in channel values for tx, ty or tz as long as the channel has keyframes set.
If no channel keyframes are set in the sop node the chops fetch node does not receive values.

Anyone have ideas how I can resolve this?

how do I manually edit curve point coordinates 2022年9月11日1:11

BabaJ
WillA
Of course, in Houdini there are often many ways to get results. Perhaps putting in an RFE is the only way to go with a feature like this.

RFE is but one way....after that while you wait for the feature if it becomes implemented, you can make your own tool that approximates the same functionality you desire - after all that's Houdinis strength - making ones own tools for specific purposes.


I have to admit I'm tempted to create a python sop to do this. Creating the gui would require lots of learning but at least it would be a clear prototype to demonstrate what I would like.

how do I manually edit curve point coordinates 2022年9月10日1:42

tamte
while not ideal I found that Rig Pose is pretty helpful in editing curve points post creation both as Offset or Absolute values

check World Space to avoid it behaving like hierarchy
and then move points
if you want to set values in Absolute coordinates change Mode to Override

Tamte, I admit rigpose is usable for editing curve points post creation.
Override mode does allow explicit value setting.
However, Spreadsheet seems like the more intuitive user-friendly interface to enable manual editing of existing point values.
In the spreadsheet you see the original coordinate values which rigpose and transform does not provide.

I don't understand why spreadsheet panes of some Sops are haphazardly prevented from being able to edit the displayed values.
Engaging the SOP lock flag provides a mechanism to store spreadsheet edits.

Of course, in Houdini there are often many ways to get results. Perhaps putting in an RFE is the only way to go with a feature like this.