Soft Radius, no Edge Distance?

AdamT · Lurker Joined: 13 Jun 2010 Posts: 22

Hey guys,

When using Edit or Smooth Transform SOPs [edit: correction, SoftTransform], we have a Point Connectivity option, but no Edge or Surface Distance. That is, in Max for instance, you can set your falloffs to be not only a volumetric radius, but to only affect a particular threshold of connected points/edges/face on a surface, so on folded surfaces for example you can exclude elements that are within the falloff radius but are "far away" in terms of surface area.

Is there an equivalent to this in Houdini, or does it require a workaround?

Thanks in advance!

eitht · Houdini Expert Joined: 20 Nov 2010 Posts: 257

U looking for Soft Tranform?

eitht.

AdamT · Lurker Joined: 13 Jun 2010 Posts: 22

Yeah sorry, I said Smooth Transform whereas I meant Soft Transform.

Here's an example scenario, with a corkscrew - the Soft Radius is affecting all vertices, whereas I only want to affect vertices within a set distance from my group's selection.

edward · Posted: Tue May 01, 2012 1:52 am GMT Post subject:

Ensure "Ignore Point Connectivity" is OFF.

AdamT · Lurker Joined: 13 Jun 2010 Posts: 22

Thanks Edward, that's the first thing I did (and it is of course the default), however Point Connectivity only checks that the points are connected, which is halfway there - I need to know they're Connected Points, and that they're within N connections of my selection.

In the image below I've drawn a U shape, and selected & moved points 0-3 with Soft Radius turned on and Ignore Edge Connectivity disabled. The Soft Radius is including ALL nearby points that fall within the radius, whereas the behaviour I'm looking for would allow me to also assign a connectivity distance of (in this case) 3 points, or edges, so that only connected points 0-5 along U are being moved - the equivalent of a simple mask, in effect.

Edit: It appears you've come across this same thing before (7 years ago!). No resolution then either... this is a pretty fundamental falloff feature in modelling these days, I'm really surprised the RFE never found it's way into production :/

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=22921&sid=20ab56383e6fbf1c14d94563d982df36 Rolling Eyes

grayOlorin · Posted: Wed May 02, 2012 10:50 pm GMT Post subject:

Hey Adam, this seems to work for me using the edit SOP with default settings. Check out this post

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=5114

Are you using the edit SOP transform manipulator, or the brush?

edward · Posted: Thu May 03, 2012 5:13 am GMT Post subject:

Simon · Posted: Mon May 07, 2012 6:45 am GMT Post subject:

Still hoping one day Sesi will add this, sadly modelling tools aren't getting much love any more. It's all about blowing stuff up Crying or Very sad

zarti · Posted: Mon May 07, 2012 9:30 am GMT Post subject: