- [Instructor] Here I'm going to talk about split and trim.
Similar operators, slightly different functionality.
For the split definition, we're going to click on the icon
and hit the F1 key,
to either pull up the help documentation,
pull down that file,
or in the reference documents that you pulled down,
at the beginning of this video tutorial,
you can use that file there.
Now, we have split one open.
I'm going to select my element to cut.
What am I going to cut with?
These curves.
I can pick as many elements as I need to,
to define my split.
You don't have to split, and then pick another split,
and then pick another split.
You can pick them all at once.
I'm going to cancel.
The split function is also very pick sensitive.
If I select this surface and pick this curve, for example,
the side of the surface I picked on is the side that's kept.
If I need the other side, I can select the other side.
Or, I can come out into the area that is being trimmed away
and select to specify that's the area that I want to keep.
As I walk through this,
you'll notice that for every one of these,
whatever I have highlighted as a cutting element
is determining what side I want to keep.
Something else that the split is capable of doing,
maybe go ahead and double click on this.
I'm just going to shrink this a little bit.
Exit out.
I'm going to go in and do my split.
Select my surface and pick this line.
You'll notice that I get this message, "The curve sketch
"four does not fully lie on surface extrude one."
What this is,
let me go under Show Parameters,
is down here under Extrapolation type,
is saying that this curve doesn't cut
the surface all the way through.
I have an option in here saying tangent,
extrapolate tangent from that endpoint out to the very end.
If I change this to none, you'll notice I get a failure.
It doesn't want to work at all.
I can switch this to tangent.
It pops up a little warning saying
that it has to extrapolate
in order to create the split in whole.
Come over here.
I'll do another split.
You'll notice that it picked my split.
Split to that surface.
Everything works just fine.
I'll do the split again.
This time I'll reverse the selection,
element to cut, to that, and in this case,
you'll notice that I didn't get an error message.
The surfaces, as you can see, intersect.
There's no guess work for the split function,
so it doesn't give you a warning.
If I had this set to none, though, it'll still fail.
If you're getting a failure and you want it to work,
just say, tangent, and it works.
Now, under split you also have what's called trim.
Trim is similar to split in that you're picking
multiple elements that you want to split, but what it will do,
element one, element two,
based off of the sides I picked,
you'll notice it splits both of the elements together
and then it'll join those elements
into one singular element.
You'll notice that if I pick this,
going down, pick this one, and over.
Select OK.
There's my trim, and you'll notice that if I look at this,
in the tree is one singular element.
Those are all of the elements.
If I need to I can come in here.
I can remove an element,
as well.
If I need to, I can specify on the element.
This is element extrude six.
I can pick on the side that I want to keep.
If I need to make a modification to my trim,
I can always go back, and add elements, remove elements.
What do I want to keep?
What do I want to remove?
And, pick the sides that I want to keep within the trim.
Again, the difference between the split and the trim
are they both remove material,
and the split you can pick the surface to split
with multiple curves
or you can pick a surface to split with multiple surfaces,
or you can pick a curve to split with surfaces or curves.
Whereas, with the trim, if I'm splitting curves,
I can only pick curves and it'll join the elements together,
or surfaces, so they do something very similar,
but the end result is the trim will actually split
everything that you've picked,
and then join everything together.