Hi,
In Nuke, I think there's 2 ways you could go about this:
1 - Keep all your transforms together for each image, before merging them
together. That means you'll probably want to have one master transform that
drives the camera move, and have it cloned (or expression linked) as the
last transform of each one of your images. Then, above that transform, just
position, scale each image to line them up. And if you need to do any
masking to blend them together, make sure you do that before the transforms.
2 - The workflow you describe from AE & Flame can be achieved by moving to
a 3D setup instead. One of the really cool things about Nuke that doesn't
get enough rep is the fact that geometry honors concatenation when looking
up its textures. So, say you have an image, scale it way down, and put it
on a card. If you render that through a camera that gets very close to the
card (and therefore scales it up again), you'll see that it's still
concatenating with the transformations before the card. And, most
importantly, this stays true even when you use MergeMaterial nodes.
So, for the case of the "Earth Zoom", you could use a setup like this (and
if you're going to be adding cloud layers, etc, they might need to have
some parallax, so I would definitely recommend the 3D setup in this case):
set cut_paste_input [stack 0]
version 6.3 v4
StickyNote {
inputs 0
name StickyNote1
label "because of the way geometry textures itself honoring\nconcatenation
of transforms, you can get close to your scaled\ndown images without
loosing detail down here"
selected true
xpos -1564
ypos 342
}
push $cut_paste_input
Camera2 {
translate {{curve x1 0} {curve x1 0} {curve x1 -0.528 x20 1.528}}
name Camera1
selected true
xpos -1586
ypos 250
}
CheckerBoard2 {
inputs 0
name CheckerBoard1
selected true
xpos -1221
ypos -27
}
Transform {
scale 0.1
center {1024 778}
name Transform8
label "sacled way down"
selected true
xpos -1228
ypos 61
}
CheckerBoard2 {
inputs 0
name CheckerBoard7
selected true
xpos -1318
ypos -144
}
Transform {
scale 0.3
center {1024 778}
name Transform9
label "sacled way down"
selected true
xpos -1318
ypos -55
}
ColorWheel {
inputs 0
gamma 0.45
name ColorWheel1
label "BG = widest image"
selected true
xpos -1428
ypos -230
}
MergeMat {
inputs 2
name MergeMat2
selected true
xpos -1428
ypos -49
}
MergeMat {
inputs 2
name MergeMat1
selected true
xpos -1428
ypos 67
}
Card2 {
translate {0 0 -0.7139999866}
control_points {3 3 3 6
1 {-0.5 -0.5 0} 0 {0.1666666865 0 0} 0 {0 0 0} 0 {0 0.1666666865 0} 0 {0 0
0} 0 {0 0 0}
1 {0 -0.5 0} 0 {0.1666666716 0 0} 0 {-0.1666666716 0 0} 0 {0 0.1666666865
0} 0 {0 0 0} 0 {0.5 0 0}
1 {0.5 -0.5 0} 0 {0 0 0} 0 {-0.1666666865 0 0} 0 {0 0.1666666865 0} 0 {0 0
0} 0 {1 0 0}
1 {-0.5 0 0} 0 {0.1666666865 0 0} 0 {0 0 0} 0 {0 0.1666666716 0} 0 {0
-0.1666666716 0} 0 {0 0.5 0}
1 {0 0 0} 0 {0.1666666716 0 0} 0 {-0.1666666716 0 0} 0 {0 0.1666666716 0} 0
{0 -0.1666666716 0} 0 {0.5 0.5 0}
1 {0.5 0 0} 0 {0 0 0} 0 {-0.1666666865 0 0} 0 {0 0.1666666716 0} 0 {0
-0.1666666716 0} 0 {1 0.5 0}
1 {-0.5 0.5 0} 0 {0.1666666865 0 0} 0 {0 0 0} 0 {0 0 0} 0 {0 -0.1666666865
0} 0 {0 1 0}
1 {0 0.5 0} 0 {0.1666666716 0 0} 0 {-0.1666666716 0 0} 0 {0 0 0} 0 {0
-0.1666666865 0} 0 {0.5 1 0}
1 {0.5 0.5 0} 0 {0 0 0} 0 {-0.1666666865 0 0} 0 {0 0 0} 0 {0 -0.1666666865
0} 0 {1 1 0} }
name Card1
selected true
xpos -1428
ypos 158
}
push 0
ScanlineRender {
inputs 3
output_motion_vectors_type accurate
name ScanlineRender1
selected true
xpos -1428
ypos 270
}
Hope that helps.
Cheers,
Ivan
On Mon, Apr 9, 2012 at 6:09 PM, mesropa
<nuke-users-re...@thefoundry.co.uk>wrote:
> **
> I have been trying for the last few days in creating an Earth Zoom also
> known as a Cosmic Zoom or as I like to think of it simply as "image
> nesting". I found a tutorial for it in AE and it seams straight forward. It
> can also be done in Flame with the same logical steps, however I have been
> unable to do the same thing using Nuke. The problem is that once a node
> passes through a merge the pixels are baked down. You can have transform
> nodes one after the other doing inverse things and because of CONCATENATING
> they will cancel each other out without effect. but if you scale something
> down using a transform and merge it with another plate the output can not
> be inversely scaled back up with out degradation. Short of creating giant
> 30K and larger images (using a reformat to nest them ) I can't make
> something work as efficiently as possible. Below is the tutorial of the
> After Effects setup. If any one can give some pointers that would be an
> amazing help
>
> http://www.videocopilot.net/tutorial/earth_zoom/
>
> Thanks
>
> _______________________________________________
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> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
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