Working with Layers in Roto Video Lecture | Create Visual Effects with Nuke - Professional Skills

in this tutorial we will look at using
layers and multiple shapes and rotor and
rotopaint this area here lists all the
shapes and paint strokes used in the
node so I'll start by creating a simple
ellipse and its name appears as we have
seen before in the shape layer list so
I'll create a second ellipse on top but
because I have the GL color set to white
I can't see what I am drawing so I'll
just change the color here to something
that is visible then I'll delete that
shape and I'll redraw it now in the list
we have two shapes the new one is on top
of the last as the list works top down
the same as in Photoshop let's just
click on it to rename it now select the
root layer and down here I can create a
group and I can drag these shapes into
that group I'll just rename the group
now if I right-click over a shape I get
options to cut copy and paste I can
paste between different nodes in this
case I want to duplicate the shape I
just line it up
and now I'll create just one more shape
but I've created this outside of the
group as the group wasn't selected so
I'll move it into the group and note
that it goes down to the bottom in this
case I want it further up so I drag it
to the top and I just rename it now if I
select a shape I can change its color or
other attributes
this time I'll take a second shape and I
change its blending mode where I can
shift select more than one and change
all their colors or blending modes etc
in one go
this of course can make everyone very
happy indeed
man let's have a quick look at the
different layers of transformations that
we can apply here we can use the shapes
tools to apply transformations or we can
use the shapes transform tab and use
additional transformations or we can go
further and put them in a layer and add
another layer of transformation and we
can do this as deep as we like so back
to smiley and select the head group and
in addition to the shapes transform we
can use the group's transform tab to
rotate the scale etc the group in one go
as AutoKey is on at the top here I'm
actually adding a secondary level of
animation this is most useful when
applying tracking data which you can see
in the wire removal tutorial stepping
back into the group I can now use the
mouths transform tab and we can continue
to add these extra layers of animation
as deeply as we wish to go
now I want to work on the corner of this
mouth here but it's difficult to select
these points without selecting unwanted
points on the other shape so I'm going
to lock that shape here which I can also
do up here and now I can select these
points I want easily
again the same problem occurs up here so
I locked these shapes and now I can be
positioned the shape lastly I'll create
a keyframe at the end here
amazing
now I'll take our group and move it
across by minus 450 pixels as you can
see is put a keyframe in here so this
point I want to stop animating so I'll
turn off auto key and I remove the
animation I'll create a second shape to
the right of it but because I am still
inside the group this shape has been
affected by the animation of the group
this is not what I want so I just delete
that shape step out of the group and
redraw it
now this time I want to use this shape
for something new to nuke 6.1 so rather
than use it as a color I'm going to
select foreground from this menu and go
into the clone tab and change the
translation parameters I now have a
snapshot of the foreground inside this
shape everything I do to the first group
is cloned into this shape of course if I
alter the shape it also affects the area
cloned including if I go into feathering
in the next tutorial we will move on to
animation in the rotopaint node
you