Ok we agree.
On Monday, March 6, 2017, Jonathan Moore <jonathan.moo...@gmail.com> wrote: > As far as I understood it Oliver, the spline version of the Houdini Ramp > only operates in the zero to one range. You re-fit the values pre/post/ or > both to suite your needs. > > > > I get that this doesn’t match the UX of FCurves in XSI, but I’ve always > understood Ramp’s in Houdini to be more of a lower level discrete element > in visual programing terms. > > > > *From:* softimage-boun...@listproc.autodesk.com > <javascript:_e(%7B%7D,'cvml','softimage-boun...@listproc.autodesk.com');> > [mailto:softimage-boun...@listproc.autodesk.com > <javascript:_e(%7B%7D,'cvml','softimage-boun...@listproc.autodesk.com');>] > *On Behalf Of *Olivier Jeannel > *Sent:* 06 March 2017 17:31 > *To:* Official Softimage Users Mailing List. https://groups.google.com/ > forum/#!forum/xsi_list <softimage@listproc.autodesk.com > <javascript:_e(%7B%7D,'cvml','softimage@listproc.autodesk.com');>> > *Subject:* Re: houdini question (and where to ask) > > > > Not sure I get it Christopher (not in front of H) > > Does your trick actualy change the graph visualy ? > > In short, can I see the negative x & y values ? > > On Monday, March 6, 2017, Christopher Crouzet < > christopher.crou...@gmail.com > <javascript:_e(%7B%7D,'cvml','christopher.crou...@gmail.com');>> wrote: > > Indeed, which is why I mentioned the “detail” mode which brings you back > to O(N). Not saying that one approach is better than the other though, only > that it is possible. > > > > On 7 March 2017 at 00:12, Andy Nicholas <a...@andynicholas.com> wrote: > > Yep it is possible, but you wouldn't want to do it because each > calculation of the maximum value would be running across N points to > calculate that. That'd make it an O(N^2) operation, albeit spread over > multiple threads. > > It might seem like a pain to have to do this in advance using an Attribute > Promote, but by doing so, it's actually forcing you to work in a more > efficient way. Go with it ;) > > > > On 06/03/2017 16:32, Christopher Crouzet wrote: > > It *is* possible to retrieve the maximum value in a VOP since nothing > stops anyone from manually iterating through all the points of the > geometry. This kind of operation might be more suited in “detail” mode > though. > > Also, having the ramp normalized to the [0, 1] range in both the X and Y > axis is usually “workarounded” by adding a float parameter for the > amplitude (Y axis) that is used as a global multiplier (making later > tweakings convenient!), and a float2 parameter for the target range (X > axis) that is then remapped using `fit("my_ramp", 0.0, 1.0, range_min, > range_max)` (which is also convenient for later tweakings!). > > Now, if you really want to have an actual FCurve, then just create a > simple float parameter, add all the keys however you want, then query it in > using `chf("my_param", the_time_in_seconds)` in VEX/VOP, or using the > equivalent expression. > > > > On 6 March 2017 at 23:29, Jonathan Moore <jonathan.moo...@gmail.com> > wrote: > > Fabricio , > > > > The Attribute Promote help page has approx 15 examples you can load. > Hopefully you might find something within the examples to inspires a > solution. > > > > *From:* softimage-boun...@listproc.autodesk.com [mailto:softimage-bounces@ > listproc.autodesk.com] *On Behalf Of *Olivier Jeannel > *Sent:* 06 March 2017 15:56 > *To:* Official Softimage Users Mailing List. https://groups.google.com/ > forum/#!forum/xsi_list <softimage@listproc.autodesk.com> > > > *Subject:* Re: houdini question (and where to ask) > > > > You can't get the "get maximum in set" when inside a vop. > > But, you get those options with the promote attribute sop. > > > > > On Monday, March 6, 2017, Oscar Juarez <tridi.animei...@gmail.com> wrote: > > I would like to be proven wrong, but that would be the way, I mean in your > second pointvop you don't need to add another noise, your noise is already > saved in an attribute, when you promote just check off delete original and > you can access the same noise. Also noises have specific output ranges, > they come in the documentation, so you can always add a fit node to change > your range to what you need, in the geometry spreadsheet you can also sort > by value so you can see max and min. > > > > If you press X with your mouse over the noise output it will add a > visualization node, you can visualize on the viewport or in the geometry > spreadsheet the values. I know its not the same but as far as I know their > is no way to do the same as the get maximum in set node in a vopsop context. > > > > > > > > On Mon, Mar 6, 2017 at 3:57 PM, Fabricio Chamon <xsiml...@gmail.com > <javascript:_e(%7B%7D,'cvml','xsiml...@gmail.com');>> wrote: > > thanks everyone. The ramp parameter kind of works but as you say, is not > that user friendly and does not show the points below 0. (that's ok, but I > wonder if it is possible to write a custom widget in houdini) > > > > anyway, the thing I could not get right just yet is that sort of "get > maximum in set" thing. Sorry for using ICE language, I'm trying to be open > minded here, so please tell me if that`s not the correct mindset. > > > > so on this graph: > > > > [image: Imagem inline 1] > > > > ...how could I get the maximum value of the output noise node and compare > to a single point output of the same node? > > > > From what I can tell, I'd have to: > > > > 1- create this pointvop node with a turbnoise, then store the output noise > into an attribute (via bindexport?) > > 2- up one level -> drop an attrib promote (detail), set to maximum > > 3- drop another pointvop node with another noise node inside (same > parameters) and compare the result noise to that found on the atrib promote > node?? > > > > I'm 99% sure this is totally wrong...how would you go about that single > task specifically? > > > > and finally, thanks for the suggestions on houdini forums and discord. > will try both (although I pretty much like this list =) ) > > > > > > 2017-03-06 15:17 GMT+01:00 gareth bell <garethb...@outlook.com > <javascript:_e(%7B%7D,'cvml','garethb...@outlook.com');>>: > > yeah - the lack of handles is frustrating > ------------------------------ > > *From:* softimage-boun...@listproc.autodesk.com > <javascript:_e(%7B%7D,'cvml','softimage-boun...@listproc.autodesk.com');> > <softimage-boun...@listproc.autodesk.com > <javascript:_e(%7B%7D,'cvml','softimage-boun...@listproc.autodesk.com');>> > on behalf of Olivier Jeannel <facialdel...@gmail.com > <javascript:_e(%7B%7D,'cvml','facialdel...@gmail.com');>> > *Sent:* 06 March 2017 14:05:17 > *To:* Official Softimage Users Mailing List. https://groups.google.com/ > forum/#!forum/xsi_list > *Subject:* Re: houdini question (and where to ask) > > > > yep but it has no handles > > and try to make négative values, it takes them but wont show on the curve > as it has a 0,1 space. > > Unless i'm wrong (which i'd love to be) > > > > Le 6 mars 2017 14:36, "Olivier Jeannel" <facialdel...@gmail.com > <javascript:_e(%7B%7D,'cvml','facialdel...@gmail.com');>> a écrit : > > in vop, bind and bind export node will get an set datas. > > Ramp Parameters is sort of fcurve. > > It's a bit weak in terms of curve manipulation, but does the job. > > It has 2 modes rgb (ramp) and spline. > > If you use several ramps in the same vop, name them with different name or > they might not export. > > > > Le 6 mars 2017 14:28, "Fabricio Chamon" <xsiml...@gmail.com > <javascript:_e(%7B%7D,'cvml','xsiml...@gmail.com');>> a écrit : > > ..sorry, hit send too soon. > > > > Question #1: are there any equivalents to ICE "get ... in set"? or or do I > have to iterate and store values for later comparision? In other words: > what is the best or recommended workflow to compare single point data with > global point data? > > > > Question #2: any nodes that resemble a fCurve node, like we have in ICE? > if not, what is the alternative? > > > > and finally, I can see this list is becoming more and more houdini-esque > than ever..but, what is the best place to ask beginner questions like the > above? houdini foruns, houdini list, odForce... > > > > thanks! > > > > 2017-03-06 14:23 GMT+01:00 Fabricio Chamon <xsiml...@gmail.com > <javascript:_e(%7B%7D,'cvml','xsiml...@gmail.com');>>: > > Hi, I'm slowly getting into houdini and this is my first attempt to port a > really simple ridged fractal deformer made in ICE to houdini (using > pointvop). > > > > Question #1: are there any equivalents to ICE "get ... in set"? or or do I > have to iterate and store values for later comparision? In other words: > what is the best or recommended workflow to compare single point data with > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com > <javascript:_e(%7B%7D,'cvml','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 > <javascript:_e(%7B%7D,'cvml','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 > <javascript:_e(%7B%7D,'cvml','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. > > > > > -- > > Christopher Crouzet > *https://christophercrouzet.com* <https://christophercrouzet.com> > > > > > > ------ > > 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. > > > > > -- > > Christopher Crouzet > *https://christophercrouzet.com* <https://christophercrouzet.com> > > > >
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