Hey Community!

I'm at a loss how to create the pictured curve with corresponding normals.
Basically I'm trying to understand the Sweep-SOP better.
To be able to replicate what Sweep does, I need to create a curve
with the normals facing away from the curve-points according to the curvature at this curve point.

I created the curve and piped it into a point-SOP.
But how to get the desired normals now?

I cannot do something like “point(”../add1“, 0, ”P“, 0) - $TX”, to align the normals toward another point. The normals would flip when the curve spirals.

Any gurus care to explain?
Edward maybe?

Hi , one option to orient the normals as in an image is using point sop.

Hi, another option is using chop.

Grab the Tangent SOP from the exchange here:

http://www.sidefx.com/exchange/info.php?fileid=90&versionid=90 [sidefx.com]

Radial vectors is what you want.

jeff
Grab the Tangent SOP from the exchange here:

http://www.sidefx.com/exchange/info.php?fileid=90&versionid=90 [sidefx.com]

Radial vectors is what you want.

This, one of the first things I always install on a fresh install.

In fact, I'm always wondering why it doesn't make an actual release in Houdini, considering it's pretty useful. 8)