Oh nice.. thanks a lot for pointing that out!
On Wed, Jun 12, 2013 at 1:33 PM, Alan Fregtman <[email protected]>wrote: > >> ... to be able to use texturing UVs to drive the location. Kinda like > a UV to Location but for polygons. Beating a dead horse for sure but this > stuff is so mysterious I can't help wondering... > > Maybe ask Gustavo how he approached his UV to Position ICE magic? > https://vimeo.com/36464429 > > > > > > On Wed, Jun 12, 2013 at 11:52 AM, Vincent Fortin <[email protected]>wrote: > >> Thanks guys for your answers. That pretty much confirms my suspicions >> about locations in ICE. Oh well, hopefully I can make it to the next beta >> and make a few suggestions. >> >> Another approach that would serve the same purpose in some cases is to be >> able to use texturing UVs to drive the location. Kinda like a UV to >> Location but for polygons. Beating a dead horse for sure but this stuff is >> so mysterious I can't help wondering... >> >> >> On Wed, Jun 12, 2013 at 4:18 AM, Ahmidou Lyazidi >> <[email protected]>wrote: >> >>> Being able to store them as static ice atttribute and eventuallycache >>> them would be usefull too ! >>> I'm also curious about why we don't have a deeper access to locations, >>> could some SI dev elaborate about that? >>> Is there still rooms for improvement? >>> >>> Cheers. >>> >>> ----------------------------------------------- >>> Ahmidou Lyazidi >>> Director | TD | CG artist >>> http://vimeo.com/ahmidou/videos >>> http://www.cappuccino-films.com >>> >>> >>> 2013/6/12 Vladimir Jankijevic <[email protected]> >>> >>>> +100 >>>> It would be great to have access to this data. The ability to build my >>>> own locations would be useful sometimes :) >>>> It's a shame we haven't seen any development in that area :( >>>> >>>> >>>> On Wed, Jun 12, 2013 at 1:37 AM, Raffaele Fragapane < >>>> [email protected]> wrote: >>>> >>>>> locators are more or less that, barycentric coordinates coupled with a >>>>> facet index kinda thing. >>>>> Why they are not exposed atomically isn't 100% clear. It might be some >>>>> eval issues with those atoms if they were to be exposed, just lack of >>>>> foresight in the implementation somewhere back then, simply something >>>>> missing that might one day come, or they might look up additional data of >>>>> sorts (accelstruct?) and can't be decoupled from that. >>>>> >>>>> Regardless, they can't be cracked open that I know of, not to read >>>>> from them more granular-ly, nor to write directly into or over one. >>>>> >>>>> >>>>> On Wed, Jun 12, 2013 at 1:46 PM, Vincent Fortin <[email protected]>wrote: >>>>> >>>>>> Figured I'd start a new thread. This has been arousing my curiosity >>>>>> for a while and I need your wisdom :-) >>>>>> >>>>>> In Houdini I build locations by providing a polygon index and what is >>>>>> called a "uv parametric location". The term uv is misleading here. All it >>>>>> is, is a coordinate on each polygon plane. >>>>>> >>>>>> Softimage's sdk calls it "subtriangle barycentric weights". So along >>>>>> with the polygon index and the vertex indices I managed to build my >>>>>> location in python. I didn't test this thoroughly but I seem to be >>>>>> getting >>>>>> an equivalent to what I'm used to in Houdini. >>>>>> >>>>>> With regard to recreate this in ICE: >>>>>> 1) Do we have access to the necessary data? (that is, polygon index, >>>>>> subtriangle indices and the normalized weights on the triangle?) >>>>>> 2) How would we go about assembling it? >>>>>> >>>>>> I understand this all sounds a bit abstract. Like everyone I use >>>>>> locations a lot in ICE, they're amazing and manipulating them is easy. >>>>>> Maybe there is no need for exposing lower-level functionalities. >>>>>> I'm merely experimenting here to see how far I can push them. An >>>>>> example would be to access those barycentric coordinates and, say, slide >>>>>> a >>>>>> particle on a polygon without having to resort to the Get Closest >>>>>> Location >>>>>> node. >>>>>> >>>>>> Thoughts? >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Our users will know fear and cower before our software! Ship it! Ship >>>>> it and let them flee like the dogs they are! >>>>> >>>> >>>> >>>> >>>> -- >>>> --------------------------------------- >>>> Vladimir Jankijevic >>>> Technical Direction >>>> >>>> Elefant Studios AG >>>> Lessingstrasse 15 >>>> CH-8002 Zürich >>>> >>>> +41 44 500 48 20 >>>> >>>> www.elefantstudios.ch >>>> --------------------------------------- >>>> >>> >>> >> >
