[Sidefx-houdini-list] Pop in Dop hittime?

Javier Meroño javiermerono at hotmail.com
Mon Feb 3 07:34:36 EST 2014


http://forums.odforce.net/topic/19383-pop-in-dop-hittimehow-to-get-only-first-hit-time-for-particles/

You´re right, So this is the odforce link to the scene file.

regards,

Javier Meroño



> Date: Sun, 2 Feb 2014 18:42:59 -0500
> From: sidefx at trinix.ca
> To: sidefx-houdini-list at sidefx.com
> Subject: Re: [Sidefx-houdini-list] Pop in Dop hittime?
> 
> I don't think you can attach a file with this mailing list.
> 
> Javier Meroño wrote:
> > hi,
> >
> > I just implemented Nick´s explanation into an actual HIP file for anybody (specially Dominik) to check.
> > It works nicely.
> >
> > it´s a bit delayed because files into this group have to go through moderation (understandably).
> >
> > regards,
> >
> > Javier Meroño.
> >
> >   
> >> Date: Sun, 2 Feb 2014 08:43:19 +0100
> >> From: nick at nicknimble.com
> >> To: sidefx-houdini-list at sidefx.com
> >> Subject: Re: [Sidefx-houdini-list] Pop in Dop hittime?
> >>
> >> Hi Dominik,
> >>
> >> Like Francois suggested, I would make a custom attribute that defaults 
> >> to -1 which means it hasn't been set before. Then you can have a simple 
> >> VOPPOP that does a check if the particle has hit/impact values set on 
> >> this frame, if so you check if your custom attribute equals to -1 (it 
> >> hasn't been set before), then write the hit/impact value you are 
> >> interested in to your custom attribute. Because you have a check that 
> >> verifies if the attribute equals -1, it can only been set once being the 
> >> first impact.
> >>
> >> Good luck! :-)
> >>
> >> Cheers,
> >> Nick, be Nimble
> >> -- 2014 the year where things become clearer --
> >> +31 622 4243 94 | www.nicknimble.com | www.facebook.com/nicknimble
> >>
> >> On 01/02/14 03:33, François Duchesneau wrote:
> >>     
> >>> Hi Dominik,
> >>>
> >>> I haven't used the new Pop in Dop but I guess you can create a custom 
> >>> attribute and set its value to be the minimum between itself at the 
> >>> previous step and the hittime. Maybe you'll have to tell the default 
> >>> value is 9999 for the case hittime is not set yet.
> >>>
> >>> If you're looking for the clean way of doing it, I don't know though :)
> >>>
> >>> Francois
> >>>
> >>> Dominik Kirouac wrote:
> >>>       
> >>>> Hey all,
> >>>>
> >>>> I have a simple Pop in Dop Question.
> >>>>
> >>>> I'm trying to get the hittime attribute of the first hit, because the 
> >>>> particles are sliding on the surface, the hitime update each frame.
> >>>>
> >>>> Thanks
> >>>>
> >>>> Doum
> >>>>
> >>>>
> >>>>
> >>>>
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