- [Instructor] So just like everything else in NX
that has any kind of history,
all you have to do is come over to the top of the element,
either in the part navigator or out in the window,
and double click on it.
It'll take you back, let me move this out of the way.
It'll take you back to that moment in time
that the element was created.
So here you can see I can drag these little handles,
make changes, I'll select okay, and my surface now updates.
Great, super powerful.
Sometimes edits, you may want to be able to
see kind of what happens to a surface.
It's one of those things where,
yeah, the surface is built off of those curves,
but I don't want to see the surface update
as I'm making a change to the curve.
I don't necessarily want to double click on that.
Then roll back in time.
So with the surfacing functionality,
if I go over the top of this curve and I right mouse click,
and I can do this in the tree as well.
You'll notice if I go to the top,
I have Edit Parameters and Edit with Rollback.
The default action that we have set is Edit with Rollback,
but with my Freeform tools,
my splines, surfaces, that type of thing,
if I come in here and say Edit Parameters,
what it does is it goes into the Edit mode for that feature,
but it doesn't roll everything back.
Now I can see the surface as
I make my manipulations to this curve.
So if I change this curve,
you'll see the surface updates straightaway.
So this is that intermittent update, very powerful.
It allows you to go in and visualize what's going on
with these highly stylized shapes.
Sometimes you really want to
take advantage of the tools in said fashion,
because maybe the light needs to flow a certain way.
You know, you look at it and you go,
okay, maybe it's pinching in in a certain area.
Maybe I don't want the light to drop off.
Because it's highly stylizing,
only way you really can get that to go
is to not have that edit with the rollback,
but it's to have that edit with
just the standard parameters.
Again, it allows you just to
make those quick little changes.
Now as a warning to you, if you have a lot of data,
this could take a bit for it to update.
So when you're doing this,
you want to really take in consideration
how much data is updating or how heavy the surfaces are,
because it can really take a bit of time
unless you have a really powerful machine.
But even then, there are instances where I've seen it.
It can take a bit of time for
those updates to happen quickly.
So that's what that Edit Parameters is for.
So if I do that again to this curve up here.
Pick my curve, just right mouse click,
say Edit Parameters,
and make the changes that I want to make.
If I do something like that, you can see,
oh, I made a mistake.
I need to back off straightaway
and not apply that change through the entire process, right?
I can see it dynamically happen.
So that's the difference between
the Edit with Rollback and Edit Parameters.
The Edit Parameters really shines on the freeform,
the surfaces, the curves,
because it does that nice, incremental update.