Yes I do dislike the fact that I'm essentially blindly applying data to potentially a very small region of the UV's as well as the double filtering... which always requires an in-efficiently high res unwrap.
On the other hand... I don't find it that easy to "see" where to paint on some models with an unwrapped wireframe. And your painting a warped version which is not very intuitive. is this a non-issue for you ? Ari Sent from my iPhone > On Dec 6, 2016, at 9:05 PM, Frank Rueter | OHUfx <[email protected]> wrote: > > This introduces a couple of filter hits though. > The Project3D step in your example does nothing but line up the image to the > geo, which you can do with a Transform node as well which should concatenate > with the STMap node and thus only hit the image once. > Even better, if you bring a reference render (i.e. wire frame of UV layout) > into Photoshop you can place the image exactly where it should be rather than > fixing something in Nuke that you can avoid in the first place. > > >> On 7/12/16 2:54 PM, Ari Rubenstein wrote: >> In order to essentially 'draw' in Photoshop over a frame of your >> animation... then 'camera project' it onto the geo and have it 'stick' .. >> you'll need to do the following (Frank may know other ways, but this is what >> I do): >> >> - camera project with 'project3D' node onto geo w/ UVs >> >> - unwrap UVs with scanline renderer set to UV >> >> - place same geo below unwrapped UV rendered map and input directly into >> this readGeo node >> >> - render this from the shot camera via another scan line renderer >> >> ------ >> >> This is the only way I know how to draw on a given frame in 2D, then project >> it onto geo and have it stick exactly as it's drawn >> >> Is there a simpler method? At Blue Sky I wrapped this up into a tool called >> GeoPaint, love to evolve it if possible cause caching sometimes creates >> issues depending on what's upstream >> >> Ari >> >> >> >> Sent from my iPhone >> >> On Dec 6, 2016, at 8:41 PM, anshul anshul <[email protected]> wrote: >> >>> Hi frank, Ari, >>> When I started this, I start this with UV pass using stmap only but as soon >>> as I give map/Photoshop work this converts into horizontal lines. Then I >>> thought I should project texture from camera but when I do that coz char >>> has expression/deformations textures slides >>> >>> @ari can you pls tell me which projection methods you are talking about coz >>> if do normal projection texture slides. >>> I also thought using UV pass will solve issues but the minute I attach >>> artwork its converted into lines but good things lines hold on geo. >>> >>> Thanks >>> Anshul >>> >>> >>> On Wed, 7 Dec, 2016 at 2:39, Frank Rueter|OHUfx >>> <[email protected]> wrote: >>> If you use UVs there is no need to project anything ;) >>> Also, keep in mind that an obj sequence will not give you motion blur in >>> Nuke as there is no sub frame information. >>> >>> Alternatively you could render a UV pass to map your still frame on via >>> STMap, along with a matte pas to mask the result properly (i.e. eyelids, >>> fur in front of the eye etc). >>> >>> >>> >>>> On 7/12/16 7:23 AM, Ari Rubenstein wrote: >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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