Create a revolve in Alias

00:00

When we're building a revolved surface like this wheel, we'll often choose to build it initially at the origin.

00:08

And one reason is because the Revolve tool here asks us to choose what we want to use as the axis.

00:16

So Local will be the pivot point of the curve, and Global will be these global axes.

00:21

So, the default is Local.

00:22

So, if, for example, I try to pick those three curves, I get an error message that in Local, the curves must be grouped.

00:30

So, in this case, I can use Global, and I can have as many curves as I like.

00:36

So, the position is determined by the grid axis, and the direction is determined by this setting here.

00:40

So, I can switch that until I get what I want from the Revolve.

00:45

So, I do Next, and then pick this curve.

00:48

Again, I'm still in Global, so that will do the same revolution for me.

00:53

And then I can have a look up here and choose whether I want to do just a segment, let's say only a 60° sweep there.

01:01

Or alternatively, I can do a full 360 and divide it into the number of, in this case, spokes, that I want.

01:08

I could do something like 7, for example, and that will create for me 7 separate segments.

01:15

So, if I now have a look at this light here, I'm building that in position, then that's not going to be on my global axis.

01:23

So here I'm going to need to make use of the Local options.

01:27

So, if I double-click on Revolve, I'll put that back to Segments.

01:31

So currently, these are all separate curves with their own pivot point.

01:37

So, to use Local, I'm going to first of all need to group the curves that I want.

01:42

So, I'll do an Edit > Group.

01:45

And then I'm going to need to set the pivot point to where I want the axis to be.

01:49

So, I've got one group with the pivot point there.

01:52

So now when I use the Revolve, if I choose the X-axis in this case, and I go for Local,

01:60

then that is taking all of those curves and spinning them around that local pivot point that I specified as the axis.