Hi, One way is to group particles (animating the activation for example) and thick the "preserve group option" Then simply apply your force only on this particle group ;-)
On 31 May 2017 at 12:45, Thomas Volkmann <li...@thomasvolkmann.com> wrote: > Another one: > > In a FLIP particle simulation I want a force that only affects particles > that are emitted before a certain frame. > So how could I set a "emission_frame" attribute (or get it if it exists > already)? > > Thanks! > > > > Thomas Volkmann <li...@thomasvolkmann.com> hat am 19. Mai 2017 um 11:56 > geschrieben: > > > That sounds great... Thanks! > > Olivier Jeannel <facialdel...@gmail.com> hat am 19. Mai 2017 um 11:39 > geschrieben: > > Press the "x" key with the mouse pointer above any sop node or above any > vop node output. > It will add a "visualizer" node. > Lot's of possibility in there, I use it all the time. > More clunky than Ice unfortunatly ...aaaand some display bugs ..of > course. > > > 2017-05-19 10:53 GMT+02:00 gareth bell <garethb...@outlook.com>: > > http://www.sidefx.com/docs/houdini/basics/visualizers > > Visualizers - SideFX > <http://www.sidefx.com/docs/houdini/basics/visualizers> > www.sidefx.com > If a node has a visualizer, you can use the settings on the Visualizers > tab in the parameter editor. Enable/disable visualization at once. Click > the Visualization ... > > > > ------------------------------ > *From:* softimage-boun...@listproc.autodesk.com < > softimage-boun...@listproc.autodesk.com> on behalf of Thomas Volkmann < > li...@thomasvolkmann.com> > *Sent:* 19 May 2017 08:34:38 > *To:* Official Softimage Users Mailing List. https://groups.google.com/ > forum/#!forum/xsi_list > *Subject:* Re: Houdini Basics.... > > This is the VOP-Intersect node > <https://www.sidefx.com/docs/houdini/nodes/vop/intersect>. > I'll keep the normals issue in mind, thanks. > > Anyway, is there a way of viewport debugging as in ICE (show properties)? > I'm using print to show the values in the console atm, but that doesn't > work really when you need to see which point has what value... > > > > Olivier Jeannel <facialdel...@gmail.com> hat am 19. Mai 2017 um 10:23 > geschrieben: > > the intersect node in VOP ? > If I remember correctly, beware of the length of your normals, they had to > be long enough to "hit" the surface. ie don't normalize them. > > Yeah, Houdini is deep, not always easy.. > > 2017-05-19 8:53 GMT+02:00 Thomas Volkmann <li...@thomasvolkmann.com>: > > Thanks guys! > > I also found the transform node to do what I need 5 minutes after sending > the mail. It wasn't obvious just from reading the description that you can > use it to simply get the transforms from any object, it sounded more like a > converter node. > > BUT...here we go again: > 1) > Why are there nodes in the documentation that I am absolutely unable to > find where I would need and expect them?? > check this: GetObjectTransform node > <https://www.sidefx.com/docs/houdini/nodes/vop/getobjxform> (unable to > find anywhere, took the former mentioned transform node instead) > or this: RayHit <https://www.sidefx.com/docs/houdini/nodes/vop/rayhit> (seems > only to be available in shading contexts, tried with the intersect node > instead which didn't work, so I ended up using 'Ray' in a SOP) > > 2) > Just to know if I'm doing it right: > If I want to do a shrinkwrap or whatever one object to another, I would > use a merge node to get the target geo-information into the deformer-SOP? > That works for me, I just want to know if that's the common practice... > > > All in all Houdini is a lot of fun, but can be quite hard when you don't > have someone to ask the quick and simple stuff. > But at least I have you guys! Thanks for your patience :) > > cheers, > Thomas > > > Jordi Bares <jordiba...@gmail.com> hat am 18. Mai 2017 um 22:48 > geschrieben: > > > You may be triggering an evaluation without realising. > > I suspect the open GL glitch may not be it. > > Try deleting lights and others elements than interact with your simulation > as these, being visible may force a full re-evaluation. > > Jb > > Sent from my iPhone > > On 18 May 2017, at 18:58, Andy Nicholas <a...@andynicholas.com> wrote: > > Yep, I think there’s a sneaky bug in there somewhere. I’ve had it when > I’ve got all my objects hidden it still evaluates the DOP network. My > suspicion was that it might be related to the bug where Houdini shows an > object in the viewport you can’t get rid of. You could try killing the > Scene viewport tab and opening a new one. > > > On 18 May 2017, at 16:22, Simon Reeves <si...@simonreeves.com> wrote: > > Setting the DOP in question to bypass doesn't work for me. <-- I think > this should work? > > On Thu, 18 May 2017 at 12:52 Thomas Volkmann <li...@thomasvolkmann.com> > wrote: > > I'll be damned!! > > But knowing how to do it now wins over the embarrasment :) > > Thanks a ton! > > > "Andy Chlupka (Goehler)" <lists.andy.goeh...@gmail.com> hat am 18. Mai > 2017 um 13:47 geschrieben: > > > > Hi Thomas, > > see that little red brain at the bottom right corner? Give it a try :D > > Andy > > On 18.05.2017, at 13:45, Thomas Volkmann <li...@thomasvolkmann.com> wrote: > > Even at the risk of annoying you guys: > > How do I stop a DOP-network from cooking while scrubbing the timeline? In > Softimage I just hide the pointcloud and I am good to go. > Setting the DOP in question to bypass doesn't work for me. > User error I guess... but please shed some light! > > Thanks and cheers, > Thomas > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > -- > Simon Reeves > London, UK > *si...@simonreeves.com <si...@simonreeves.com>* > *www.simonreeves.com <http://www.simonreeves.com/>* > *www.analogstudio.co.uk <http://www.analogstudio.co.uk/>* > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > with "unsubscribe" in the subject, and reply to confirm. > > > > > ------ Softimage Mailing List. 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