Before we start working with the Stars you'll always that shows something about the mesh or expense
about the mesh that is here.
The atrium pick it's a nice one.
It's a bad one in fact and I can use it to create a new composition to show you about the mesh.
Let's make it a bit smaller and let's go ahead add an advanced tool.
I would just either just or hit on the neck and either one on the head here just in them.
Now we notice we always have seen this mesh being created.
Well it is through this mesh these triangles that you see that that information is made.
This is a kind of algo is used instead engineered to deform surfaces or to predict how surface Algoma
be deformed.
So if you select your brain for example and start moving around you will notice you are actually deforming
these triangles over here all over the place and without the mesh.
It's really almost impossible to be able to do any deformations or predict a certain deformation.
Now the mesh has two properties its expansion is density its focus on density density is about the density
of the triangles within the mesh.
You can take it down to zero and now the density is minimal I'm going to read the spin so you can see
exactly.
So you have now the density at zero it means at its minimum.
Of course it's not possible to have a single triangle.
So it is at its minimum.
And when you do certain deformations here they are very coarse.
You have very few triangles to deform increase it to a certain level.
I would go back to 12.
That's the maximum you will have more triangles to deform and then the deformation is a bit better or
more logical if you like something important that you want to notice every time you add the pin.
In fact let me take the position pin was thats the one that would really change things.
If you click not is it either the pin but in the same time it has deformed the mesh.
I would zoom in and you notice the mesh has been deformed because to be able to work was the position
being you need more tangles I dont hear more of the mash to make it smoother or a more logical deformation
every time you add a pin mainly the position being you will have a certain change within the mesh.
Thats a very important point that you want to always keep in mind when adding new bins you have here
added the mesh to allow a certain you know formation through the position.
So actually it is through the mesh to do the deformation and more triangles you have within the mesh
more these deformations are refined if you liked.
There is also the expansion.
Let me show you on the unfortunately.
You notice that you have the and that is a bit outside the alpha channel.
OK we have already moved them.
So when you deform here through the spin for example you were also taking in consideration whatever
it is outside.
If you put the expansion at zero now the mesh is exactly the same size as your alpha on it.
And when you move you also taking everything with you.
You this.
I'll put it back to normal.
It will take all the time because actually it wasn't like this in aftereffects just to make blobs but
now it's very good not funny enough you can put it at minus and it has it's it's work.
So now when it's minus five it left behind of course five pixels or something like this.
So you not as the boxes are being left behind.
I will add one here to show you five boxes outside the mesh and hands they are not deformed.
They're useful in certain animation and certain effects if you like to.
Now let's take this hand and move it around.
OK it moves according to the mesh.
Now if you increase the mesh expansion I will take it to ten.
That's what's happening now.
These areas are joint.
So when you move over here of course it's going to affect the mesh over here and everything is being
distorted.
I wouldn't do this.
Let's go for example to 15.
What is that.
As soon as I change the expansion the triangle or the mesh adjusted and in others that have been a certain
deformation but not this this area here.
The mesh is in continuous form from the outside the hand up to over here on the feet and the torso.
If you click on black Now the mesh is moving all together.
This is now one single piece.
Of course if you really exaggerate Hillview I like you have one single mesh Now over here and if you
move one pin the whole mesh is going to move over here.
So your decision of what kind of expansion you want to use will always depend on the image that you
have.
And if you're leaving some parts out you want to extend it if you want to join certain parts like we
have done here was the then then you want to expand it for example.
So actually the default or the best is the three.
We can also work with two sometimes and even one depending on how much you want to joint within the
mesh.
Now that you have understood the job of the mesh in the next lecture I'm going to talk about the Stosh
tool and how it affects the mesh.
See that.