Thank you so much for your time, explanations and examples Christopher. I'm taking those picture and will reproduce them :)
Well, I wanted an array because I need to see if I could be able to retrieve the second element of an array (Ptnum =1 ) using Get Element (I guess). On Wed, Mar 2, 2016 at 3:55 PM, Christopher Crouzet < [email protected]> wrote: > Basically, arrays are a convenient structure to pass data around (and to > potentially make your code more readable, which won't apply to VOP). If all > you need is to perform a computation in place and directly use the result > in your VOP graph, then iterating over your points is all it takes—no array > needed. > > I don't know what what you're planning to do with that array of point > positions but I've attached a screenshot with a simple example. It iterates > over all the points, retrieve their position, and outputs the centre of > mass. Note that it's better to run this specific example in “detail” mode > to perform the computation only once, instead of once per point. > > > On 2 March 2016 at 21:32, Olivier Jeannel <[email protected]> wrote: > >> Yes I saw it, sorry, I thought there was another additionnal method with >> For Loop : >> "Instead, you should be able to just loop over each point with a `For >> Loop VOP` and do your computation directly in there" >> Have I misunderstood ? You're doing a for-loop without building an array >> in the end. >> >> On Wed, Mar 2, 2016 at 3:26 PM, Christopher Crouzet < >> [email protected]> wrote: >> >>> I did attach a screenshot in my previous email, are you not seeing >>> anything? Or are you asking for the H13 for loop? >>> >>> >>> On 2 March 2016 at 21:20, Olivier Jeannel <[email protected]> >>> wrote: >>> >>>> Aaaaah THANK YOU ! >>>> >>>> I'm "aware" of the PCOpen+PcFilter to gather infos based on distance. >>>> I also use the PrimUV a bit and XYZ+PrimUV for location things. >>>> >>>> I'd be curious on the For Loop Vop, if you have any pictures :/ Sorry >>>> to ask. >>>> >>>> It's a shame there's no tutorial or phylosophycal explanations of these >>>> basic loops ... It's like if everybody was a natural born coder... >>>> >>>> >>>> >>>> On Wed, Mar 2, 2016 at 3:13 PM, Christopher Crouzet < >>>> [email protected]> wrote: >>>> >>>>> It seems like they've extended the support for arrays in H14, which >>>>> makes it now possible to use them as geometry attributes. In the previous >>>>> versions I guess that there was no real point (but convenience) in >>>>> creating >>>>> arrays in VOP since you couldn't pass them downstream with the geometry >>>>> data. >>>>> >>>>> So if you're on H14+, it seems like you were on the right path? I've >>>>> attached a working screenshot that stores every point position in a >>>>> “output” vector array attribute. >>>>> >>>>> If like me you're stuck with H13, you probably don't need to store >>>>> your point positions in an array at all. Instead, you should be able to >>>>> just loop over each point with a `For Loop VOP` and do your computation >>>>> directly in there. Now I've never used VOPs since I prefer writing >>>>> directly >>>>> in VEX so I might be wrong :) >>>>> >>>>> Also don't forget to use point clouds if you're after distance-related >>>>> queries. >>>>> >>>>> >>>>> On 2 March 2016 at 19:29, Olivier Jeannel <[email protected]> >>>>> wrote: >>>>> >>>>>> Hello serious list :) >>>>>> >>>>>> I'm a bit confused with houdini vop array. >>>>>> While I managed to do it in vex, I would like to make a build array >>>>>> (like build array from set) of the pointposition (P) in VOP. >>>>>> >>>>>> I understand you need to for-loop on each Ptnum and probably append >>>>>> the P values and this will buid an array of P. >>>>>> But you know what ? Well I can't manage to make it work. >>>>>> >>>>>> I found no example on the net (sideFX, odforce). >>>>>> The doc is just words, no schemes, no graphics. >>>>>> The examples hips are bizarre, not so simple, and use the old loop >>>>>> node. >>>>>> >>>>>> So I'm wondering if someone from here could provide a screen shot of >>>>>> how that should be connected ? >>>>>> >>>>>> Thank you :) >>>>>> >>>>>> >>>>>> ------ >>>>>> Softimage Mailing List. >>>>>> To unsubscribe, send a mail to >>>>>> [email protected] with "unsubscribe" in the >>>>>> subject, and reply to confirm. >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Christopher Crouzet >>>>> *http://christophercrouzet.com* <http://christophercrouzet.com> >>>>> >>>>> >>>>> ------ >>>>> 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. >>>> >>> >>> >>> >>> -- >>> Christopher Crouzet >>> *http://christophercrouzet.com* <http://christophercrouzet.com> >>> >>> >>> ------ >>> 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. >> > > > > -- > Christopher Crouzet > *http://christophercrouzet.com* <http://christophercrouzet.com> > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. >
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