We've talked a lot in this course about how loops define
the details on our objects.
And in this video,
I want to expand on that a little bit and show you how
different loops can serve different purposes.
So if you go to the topology examples file and go to the
loops collection and look at the mug object and head over
into material preview,
then you can see that I've color coded the face loops with
different materials.
First, we have the red loops which I'll call detail loops since
they define the extremes of our details.
Those are surrounded by blue loops, which I call support loops,
which help protect the details from pinching and stretching.
Then the green and white I call fill loops,
and those are there to fill in the rest of the area and define the silhouette.
In order of importance,
the red areas are the most important part to get right and
then the blue area and then the green.
This definitely is not an exact science and I've made up these
terms but I want to use them to help visualize what these
different loops are doing.
Let's take a look at another example which will be even more clear.
So I'll hide the mug and look at the cookie object.
And here we can see that the loops that run all the way
around the perimeter are those detail loops.
But then we also have blue loops surrounding those which
help protect those details from pinching and pulling.
So for example down here if I were to connect these vertices
right to the perimeter of the object,
then when we have subdivision surfaces enabled,
this red loop is no longer going to be perfectly smooth.
Instead, it's gonna be slightly pinched up at all of these different points.
And so we're using this blue loop as a buffer in between
that pinching and the detail.
That way our poles aren't interfering with the most
important parts of the model.
So you can think of the blue loops as support loops or
buffer loops that just help protect the main details.
Then the green and white loops just fill in the rest of the
model and help define the silhouette,
which in this case is pretty flat.
So we have a lot more leeway when it comes to the topology in those areas.
So as we start working on creating this object in the next lesson,
pay special attention to how some loops are there to define,
some loops are there to support,
and other loops are there to fill in the gaps.