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 <vladi...@elefantstudios.ch> > +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 < > raffsxsil...@googlemail.com> 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 <vfor...@gmail.com>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 > --------------------------------------- >
