Access numpt at input 2 of wrangle

[bobbybob]

As I can understand from the Houdini documentation, the "@opinputn_name" will access attributes from the secondary inputs.

I am trying to access the "numpt" by "int numLastPoint = i@opinput1_numpt;" but this does not work. Im I missing something?

Edited February 14, 2018 by bobbybob

[Sepu]

you do not need to add @opinput if you gonna grab something from input 1 just do @numpt; 

[bobbybob]

Sorry, I want the numpt of input 2.. I am use to programming where everything starts at 0

Edited February 14, 2018 by bobbybob

[Sean-R]

You can use the npoints vex expression, so:

npoints(1)

 

[bobbybob]

Sean-R, thank you so much.

Just out of curiosity. Is this a bug, that "i@opinput1_numpt" is not working, or do I use it wrong?

[Sean-R]

Hmm, not sure. Maybe because it's a different type of attribute and opinput can only access what's visible in the Geometry Spreadsheet?

[toadstorm]

There's a bit of a misunderstanding here... @numpt isn't a real attribute, it's a pseudo-attribute for convenience inside the wrangle. It's always relative to input0. If you want to get the number of points from input1, use the `npoints` function: `int npts = npoints(1)`.