Deritave and inverse ray casting, in fact it's a super complex problem, at least for me :/
On Tue, Aug 9, 2016 at 5:01 PM, Ahmidou Lyazidi <[email protected]> wrote: > Haha thanks, I should have been a detective instead :P > Le 9 août 2016 10:52 AM, "Andy Nicholas" <[email protected]> a écrit : > >> Impressive Google-fu skills ;) >> >> On 09/08/2016 15:48, Ahmidou Lyazidi wrote: >> >> Hi Andy, >> I knew that Jérôme worked on the closest location and Ray cast system (as >> he did in Fabric Engine) , I just search for his name in the Google patent >> search. >> Le 9 août 2016 10:38 AM, "Andy Nicholas" <[email protected]> a >> écrit : >> >>> Interesting! (although, personally I can't stand things like this get >>> patented) >>> >>> Ahmidou, how did you find that or become aware that that even existed in >>> the patent database? >>> >>> >>> On 09/08/2016 15:15, Ahmidou Lyazidi wrote: >>> >>> A bit more than that, here's the patent: >>> https://www.google.ch/patents/US20070024632?dq=ininventor:"J >>> erome+Couture-Gagnon"&hl=en&sa=X&ved=0ahUKEwi4orePwrTOAhWIdh >>> 4KHZgwDLQQ6AEINzAE >>> >>> It's in 'patent' language but the concept is there :) >>> Le 9 août 2016 10:01 AM, "Olivier Jeannel" <[email protected]> a >>> écrit : >>> >>>> Hey Ahmidou ! >>>> Getting some neighbors and averaging ? >>>> >>>> On Tue, Aug 9, 2016 at 3:46 PM, Ahmidou Lyazidi <[email protected]> >>>> wrote: >>>> >>>>> Yes exactly, but it's patented by AD, so you'll need to roll you own >>>>> Le 9 août 2016 9:12 AM, "Olivier Jeannel" <[email protected]> a >>>>> écrit : >>>>> >>>>>> Makes sense ! That's what the "smoothed surface" button compensate >>>>>> for in XSI ? >>>>>> >>>>>> On Tue, Aug 9, 2016 at 1:51 PM, Andy Nicholas <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> Hmm, I think that's to be expected. The edges and points are >>>>>>> generally closer to the grid than the faces. Think of it as you've >>>>>>> started >>>>>>> with a perfect sphere made of wood, and you just sanded it down to get >>>>>>> those flat triangles. The edges and points represent the places that >>>>>>> haven't been sanded down, so therefore, generally, they're closer to the >>>>>>> grid than the flat surfaces. >>>>>>> >>>>>>> >>>>>>> >>>>>>> On 09/08/2016 11:31, Olivier Jeannel wrote: >>>>>>> >>>>>>> The Attribute Transfer is nice to prototype an idea, but it's rather >>>>>>> slow (unless they rebuild it since I used it) compared to the execution >>>>>>> speed of a Vop Sop. >>>>>>> In Vop Sop, I use the PcOpen + Pc Filter to mimic the Attribute >>>>>>> Transfer at God speed :) >>>>>>> >>>>>>> While we're speaking of the xyz+PrimUV, I found it has a weird >>>>>>> behaviour compared to the ClosestLocation of ice. >>>>>>> Here's a screen shot of what I have : >>>>>>> https://drive.google.com/open?id=0B1QqhXD7Y15qU3BKY0ZmdktNSWc >>>>>>> >>>>>>> Basicaly a Grid emit some particles with a Pop solver, I build a >>>>>>> PopVop to create a Velocity(v) that make the particles going from their >>>>>>> position toward the closest UV location on the Sphere. >>>>>>> If you look at the screenshot you can see that the location has some >>>>>>> preferences for the points and edges rather than the polygons area. >>>>>>> >>>>>>> Have I missed something ? >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> On Tue, Aug 9, 2016 at 11:01 AM, Andy Nicholas < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Take a look at the "primuv" and "xyzdist" VEX functions. They allow >>>>>>>> you to get near identical behaviour to closest point look ups. It's >>>>>>>> not too >>>>>>>> much work to wrap them up into reusable HDAs. (In fact, I'd recommend >>>>>>>> doing >>>>>>>> it as a good way to start getting your head around HDA creation as a >>>>>>>> process.) >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On 07/08/2016 21:55, Andy Chlupka wrote: >>>>>>>> >>>>>>>> >>>>>>>> On Aug 06, 2016, at 11:17, Olivier Jeannel <[email protected]> >>>>>>>> wrote: >>>>>>>> >>>>>>>> In Houdini they tend to transform every thing in VDB or fill >>>>>>>> volumes with nuts number of points just to transfer datas... >>>>>>>> >>>>>>>> >>>>>>>> Strange thing you describe here. I’ve found that most advice comes >>>>>>>> in the from of using the Attribute Transfer SOP. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> ------ >>>>>>>> Softimage Mailing List. >>>>>>>> To unsubscribe, send a mail to [email protected] >>>>>>>> with "unsubscribe" in the subject, and reply to confirm. >>>>>>>> >>>>>>>> ------ Softimage Mailing List. To unsubscribe, send a mail to >>>>>>>> [email protected] with "unsubscribe" in the >>>>>>>> subject, and reply to confirm. >>>>>>> >>>>>>> ------ >>>>>>> Softimage Mailing List. >>>>>>> To unsubscribe, send a mail to [email protected] >>>>>>> with "unsubscribe" in the subject, and reply to confirm. >>>>>>> >>>>>>> ------ Softimage Mailing List. To unsubscribe, send a mail to >>>>>>> [email protected] with "unsubscribe" in the >>>>>>> subject, and reply to confirm. >>>>>> >>>>>> ------ Softimage Mailing List. 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