1 - UVProject creates UVs from scratch, with 0,0 in the lower left of the camera frustum and1,1 in the upper right.

2 - been waiting for that feature a long time ;).It should be logged as a feature request but would certainly be good to report again to make sure (and to push it in priority)



On 3/22/12 8:28 AM, a...@curvstudios.com wrote:
couple more questions:

1)  if imported geo does not already have UV's, will UVproject create a
new set or does it require them to...replace them ?

2)  if you've imported an obj sequence with UV's already on (for an
animated, deformable piece of geo)... and your using a static camera (say
a single frame of your shot camera)... is there a way to do something akin
to Maya's "texture reference object" whereby the UV's are changed based on
this static camera, for all the subsequent frames of the obj sequence ?

..sorry if I'm too verbose...that was sort of a stream of consciousness
question.  Basically I'm asking if there is an easier way then my current
method where I export an obj sequence with UV's, project3D on a single
frame, render with scanline to unwrapped UV, then input that into the full
obj sequence to get my "paint" to stick throughout.

oy, sorry again.

Ari
Blue Sky



ivanbusquets wrote:
You can think of UVProject as a "baked" or "sticky" projection.

The main difference is how they'll behave if you transform/deform your
geometry AFTER your projection.

UVProject "bakes" the UV values into each vertex, so if you transform
those vertices later on, they'll still pull the textures from the same
coordinate.

The other difference between UVProject and Project3D is how they behave
when the aspect ratio of the camera window is different than the aspect
ratio of the projected image.
With UVProject, projection is defined by both the horizontal and
vertical aperture. Project3D only takes the horizontal aperture, and
preserves the aspect ratio of whatever image you're projecting.


Hope that makes sense.

Cheers,
Ivan


On Tue, Mar 20, 2012 at 4:50 PM, coolchipper<nuke>  wrote:

                hey Nukers, may be a very basic question, but i wanted to know
what is the difference between the two, i do a lot of clean up
work everyday and i am kind of confused when to use the uv project
node an when to go for a project 3d node.i know that uv project
project a mapping coordinates to a mesh, in one of frank videos he
used the uv project node to clean up dolly tracks,that might have
been done using the project 3d node too, so whats the difference
in using uv project node for cleanup work? thanks ......
[img][/img]





Thanks Ivan.



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