I guess it always depends on the use case. I just thought for a simple
eye the painting should be very straight forward
On 7/12/16 3:11 PM, Ari Rubenstein wrote:
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]
<mailto:[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]
<mailto:[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] <mailto:[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:
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