- [Male Narrator] When you're looking to create
a Spline that gives you the most amount of control,
you may want to consider the Style Spline.
If we go up to our Sketch toolbar here
and click on the dropdown for Spline,
the second option down is the Style Spline,
and you can see it's got these lines and dots around it.
We're going to go ahead and turn that on
and see what we get here.
Now we have a few different types of ssplines:
A Bézier, a B-Spline with 3 degrees,
a B-Spline with 5 degrees, and a B-Spline with 7 degrees.
Right now let's not focus
on the exact differences between them,
what you have to know is they'll control how
smooth and how tightly this Spline adheres
to the Control Lines that are out there.
So I'm going to just start from the origin
and just start drawing some points out in space here.
And you can see as I go along --
- - I'm going to hit escape now --
- - these Control Lines control the magnitude
and the shape of the curve.
But, what they do create is a very smooth
Spline that transitions very well.
Now, I can grab the line segments and drag it out.
I can grab specific points and invert them
and pull them in different directions,
I can select the Spline and go over to the options
and change the curve type.
So if I change it to B-Spline
you can see that that tends to want to follow the lines
a little bit tighter.
The 5 degree comes a little bit loose,
but the 7 degree comes a little bit looser yet
to give you a more smooth, natural line
that's maybe not so disjoint-esque.
But I'm going to switch it back to the Bézier curve,
which is pretty close to that 7 degree curve,
and go ahead and accept.
Now, once we have that curve created, that Spline created,
We can insert another Spline off of that,
so I'm going to make another one over here.
And we can insert relations like we would with other Splines
so we can make those tangent to one another.
If we want, we can take the lines that control them
and make them co-linear,
so as we drag one line, the other line follows.
And having these extra entities to create relationships with
gives us a little bit more control
and a little bit more stability in between the two.
If we go up to Tools, and Spline Tools,
we can see here that we can insert a Control Vertex
into this Spline.
So I'm going to click on that button
and just add a couple vertexes in.
Do that again so, Tools,
Spline tools,
insert Control Vertex...
You can see, I've got to select
on the lines that already exist,
for the controls,
and now I can control that degree of freedom as well.
Now you see, as you drag these lines around,
it's not flipping this, or inverting it,
or making it pop around all crazy,
but it's giving you that ability
to really do some really fine adjustment
in specific areas of the Spline.
Because you can see, I can move this around,
and it's really only affecting from here to here,
it's not really moving this Spline around,
which is tangent, and has this control attached to it.
So it really gives you a lot of variability,
using this Style Spline,
and you can create some really nice looking, smooth curves.