- [Speaker] Under the Analysis tab,
we have a gallery called Curve Shape.
Curve Shape allows us to visually see
what's going on with our curves.
As we're building stylistic shapes,
things that flow and have to look good,
a lot of times it's difficult to see exactly what's going on
with the curves just plain as they are.
We want to verify that the curves, how they come together,
meet the stylistic requirements
and the Curve Shape Tools allow us to do that.
These act like a switch, I can pick my curves
and I can turn on the combs.
I can show peaks.
You can see here these are my peaks,
basically the tightest curvature on those curves.
I can also show inflections, where the inflections twist
and come around on each other.
Or I can go into this Curve Analysis Tool,
which is basically a combination of all three of these.
Under the Curve Analysis Tool, I can show the combs
and I can also control the combs.
Here I can suggest a scale factor so as I zoom in and out,
I can see what's going on with those combs
and how they terminate at the ends.
If I don't have a tall enough comb,
I can come over here and increase the length.
You can see as I start increasing the length,
I have a problem here, this is a G Zero Connection.
It's not tangent,
I know that because the needles at this end
do not align correctly.
So, there's a little break and this is showing me
that I have a problem.
I can also increase the number of needles
and smooth that out.
I don't want to have too few
because it's just going to look too choppy.
You really can't see anything.
I want to increase that.
I don't want to have too many
because it'll eventually just look like it's a surface,
which we don't want.
We just want to have enough of them
to give me a nice, smooth the display.
Something like that.
I also can do a Maximum Length
and the nice thing about the Maximum Length
is that it helps clean up the screen a little bit.
So, if I have a lot of needles that are going way out
because you have a crazy amount of curvature on something
and you just want to truncate everything
so you can analyze specific locations,
make it easier to visualize these things.
You can do that with that Max Length
to help clean that up a little bit.
You can see that it put these little stars at the end
to indicate that these have been trimmed so,
you know that this isn't just some flat spot on the curve.
You also have labels that you can show.
Right now this is a Curvature,
I can show the curvature at those end points.
You can see they have a different curvature.
I can show the Minimum, I can show the Maximum Curvature.
We zoom out, we can see the Maximum Curvature here.
I can also show the Radius of Curvature.
The Radius of Curvature is the inverse so,
you can actually see how much curvature or radius,
true radius value is on at one point.
This is just infinity 'cause it's coming in flat.
I can also come down here, Show Needle Values
and run across those needles to get a value as well.
I can turn on my peaks once again and inflections here,
just like I had out here and with this tool,
I also have the ability to create the points
at those locations.
Sometimes it's nice to be able to get right to that point,
hone in on that location,
you may have two or three little peaks
in an area you want to smooth out and it allows you
to create those points and come back in clean the curve up.
You can show the needles on the inside or the outside.
Here you can really see that break.
I can change the Calculation Method from Curvature
to Radius of Curvature.
Suggest my Scale Factor.
And what this does is it changes the way it's measuring
the curvature across the curve.
It shows you the inverse needle.
So, if I have something broad and flat,
I may want to use the Radius of Curvature
to help define what's going on the screen.
Whereas if I had something with a bit more curvature
or tightness, I may want to use the Curvature Method
to help define what I see on the screen.
So, one is good for broad and flat,
one is good for entire areas.
It allows you to really hone in again
on those areas that could potentially cause you problems.
And then the Scaling Method is just how it chooses
to scale across the curve mathematically.
So, I just have a--
typically use a constant when you're going across the curve.
Once I get my view the way I want,
set everything up the way that I want,
I select OK.
It sets up that Analysis Object here in the tree.
Now, the nice thing about this is that if I come in
and say, make a modification to this bridge curve
and I change this to say "Curvature,"
you'll notice that it updates the needles.
I can come in here and say, "Flow."
You can get a really good indication of what's going on
as well on that end.
You can do the same thing at the opposite end.
So, this is a live display.
So, as you go through and you apply these Analysis Tools,
once the object is created, they allow you to go in there
and again visually see very easily what's going on,
for again, the stylistic intent,
the shape of the curve, everything.
It's basically a visual representation of that shape,
the mathematics of what's going on
across those boundaries as well.