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Before we start working with the Stars you'll always that shows something about the mesh or expense

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about the mesh that is here.

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The atrium pick it's a nice one.

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It's a bad one in fact and I can use it to create a new composition to show you about the mesh.

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Let's make it a bit smaller and let's go ahead add an advanced tool.

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I would just either just or hit on the neck and either one on the head here just in them.

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Now we notice we always have seen this mesh being created.

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Well it is through this mesh these triangles that you see that that information is made.

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This is a kind of algo is used instead engineered to deform surfaces or to predict how surface Algoma

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be deformed.

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So if you select your brain for example and start moving around you will notice you are actually deforming

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these triangles over here all over the place and without the mesh.

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It's really almost impossible to be able to do any deformations or predict a certain deformation.

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Now the mesh has two properties its expansion is density its focus on density density is about the density

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of the triangles within the mesh.

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You can take it down to zero and now the density is minimal I'm going to read the spin so you can see

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exactly.

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So you have now the density at zero it means at its minimum.

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Of course it's not possible to have a single triangle.

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So it is at its minimum.

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And when you do certain deformations here they are very coarse.

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You have very few triangles to deform increase it to a certain level.

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I would go back to 12.

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That's the maximum you will have more triangles to deform and then the deformation is a bit better or

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more logical if you like something important that you want to notice every time you add the pin.

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In fact let me take the position pin was thats the one that would really change things.

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If you click not is it either the pin but in the same time it has deformed the mesh.

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I would zoom in and you notice the mesh has been deformed because to be able to work was the position

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being you need more tangles I dont hear more of the mash to make it smoother or a more logical deformation

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every time you add a pin mainly the position being you will have a certain change within the mesh.

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Thats a very important point that you want to always keep in mind when adding new bins you have here

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added the mesh to allow a certain you know formation through the position.

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So actually it is through the mesh to do the deformation and more triangles you have within the mesh

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more these deformations are refined if you liked.

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There is also the expansion.

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Let me show you on the unfortunately.

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You notice that you have the and that is a bit outside the alpha channel.

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OK we have already moved them.

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So when you deform here through the spin for example you were also taking in consideration whatever

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it is outside.

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If you put the expansion at zero now the mesh is exactly the same size as your alpha on it.

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And when you move you also taking everything with you.

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You this.

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I'll put it back to normal.

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It will take all the time because actually it wasn't like this in aftereffects just to make blobs but

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now it's very good not funny enough you can put it at minus and it has it's it's work.

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So now when it's minus five it left behind of course five pixels or something like this.

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So you not as the boxes are being left behind.

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I will add one here to show you five boxes outside the mesh and hands they are not deformed.

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They're useful in certain animation and certain effects if you like to.

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Now let's take this hand and move it around.

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OK it moves according to the mesh.

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Now if you increase the mesh expansion I will take it to ten.

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That's what's happening now.

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These areas are joint.

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So when you move over here of course it's going to affect the mesh over here and everything is being

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distorted.

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I wouldn't do this.

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Let's go for example to 15.

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What is that.

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As soon as I change the expansion the triangle or the mesh adjusted and in others that have been a certain

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deformation but not this this area here.

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The mesh is in continuous form from the outside the hand up to over here on the feet and the torso.

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If you click on black Now the mesh is moving all together.

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This is now one single piece.

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Of course if you really exaggerate Hillview I like you have one single mesh Now over here and if you

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move one pin the whole mesh is going to move over here.

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So your decision of what kind of expansion you want to use will always depend on the image that you

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have.

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And if you're leaving some parts out you want to extend it if you want to join certain parts like we

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have done here was the then then you want to expand it for example.

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So actually the default or the best is the three.

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We can also work with two sometimes and even one depending on how much you want to joint within the

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mesh.

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Now that you have understood the job of the mesh in the next lecture I'm going to talk about the Stosh

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tool and how it affects the mesh.

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See that.