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1Tutorials LightWave 3D Eye Blink Empty Tutorials LightWave 3D Eye Blink Qua Jan 26, 2011 4:01 am

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by Demian Kurejwowski
Tutorials LightWave 3D Eye Blink Pixel_black
Download source
files here.
Tutorials LightWave 3D Eye Blink Pixel_black


Tutorials LightWave 3D Eye Blink Eyes

I made this tutorial for help
people like me =) and because many are posting
on how to do it.
First the theory

The fast way to the blink is
with a endomorph, but we have to have in mind
that the points go trought in a linear way, from
point A to point B.

Tutorials LightWave 3D Eye Blink AtoB

Many times you will be going
through part of the eye (inside it, not covering
it). Now, one blink can take from half a second
up to 1/4 second. That's very, very fast. In
some cases you can make the final morph of the
eyelid a little bit bigger so this doesn't happen,
especially if you are not going to make close-ups
or big-eyed characters (Mike Wasaouwski!!!)

The other way (the Wasaouski
way) is to have a bone to control the eyelid
and follow the curve of the eye. I am going to
show you how to do it both ways so in the future
you can choose which method is better and faster
for your projects.

Tip: I believe that it's easier
to model the closed eye and then do the "opening" animation,
because you have more control of the points!
Endomorph way:

After modeling your face and
your eyelid for your project, create the eyeball
in other layer so you can have a reference for
the eyelid movement (where its pivot is going
to be).

Tutorials LightWave 3D Eye Blink Pivot_of_action
pivot of action

There will be 3 buttons on the
lower right corner. They represent the Weight,
Texture, and Morph maps respectively.

Tutorials LightWave 3D Eye Blink Morphtab
Add a new morph map and name it "blink".

Tutorials LightWave 3D Eye Blink New_morph

Afterwards choose the points
that correspond to the closed eyelid and move
them as you want the opened one to be (you can
move point by point or rotate with some falloff).

Be carefull! If you are going
to the base of the model or the morph to correct
something always check! Where are you working?
In the base or in the morph?


Now save your model and send
it to Layout. There we are gonna tell the program
that we want to use the morph that we made.

Open your object properties
and in the Deform tab, under the Add
Displecment
look for "Morph Mixer",
and add it. It will open a small box containing
the blink morph in a linear line, which
represents the % of the morph. Click on the Graph
Editor
button and this will open and insert
the morph, so you can animate it later.

Tutorials LightWave 3D Eye Blink Morph%20mixer
Bone way (Wasaouwski)

So, you want it to be even more
realistic? That's good! This method is different
from the morph way. It takes a little bit more
time and have to fix here and there and keep
checking to achieve best results.

You can work on a model you
already have or with the ones I made (yes a I
know they are horrible but there are a fast model
to ilustrate the theory). You can copy them to
another layer so you can see the differences
between this two methods.

Ok, lets continue now. You need
to create a skelegon (tab Create, under Elements,
skelegons) and draw it from the pivot of the
eyelid action (like in the morph way). You can
rename the bone later.

Tutorials LightWave 3D Eye Blink Skelegon

Thats the easy part. Now will
have to see which points are going to be affected
by this bone so in the button where was the morph
map pick the W (weight map) tab, and create
one (I named it skin).

Tutorials LightWave 3D Eye Blink Weightmap100

If you check with the Weight view,
you will see that all the mesh is red, (the redder
a point is, the more its affected by the bone)
but since we don't want all the points to be
affected, under the Map tab, General,
in Set Map Value give a 0 (zero) value
to all the points.

Now we'll need to give the eyelid
a gradient of affected points. Put your hand
off the mouse and keboard, take the time to blink
slowly and study your eye, done? You see (ha
ha maybe you feel, it's hard to see with your
eyes closed) that the upper part of the eyelid
move less and the lower part (near the eyelash)
needs to move more?

Tutorials LightWave 3D Eye Blink Gradient

The lower points need more movement,
so what do they need? To be more redder! Thats
right. And the upper points? So set the value
of each point accordingly.

Tutorials LightWave 3D Eye Blink Gradient2

After this, save your work and Send
it to layout
. In this case we are going
to convert this skelegon into bone in the Items tab, Add, Bones, Convert
skelegons to bone
(remember the skelegon
must be in the same layer).

Now open the properties of the
bone and in the weight map add the one we did
early (mine is called skin). In the picture
shown is the setting I used. I was thinking not
to show them to force people to play and experiment
different stuff but...

Tutorials LightWave 3D Eye Blink Settings
Now you can rotate the eyelid as open and close.
To animate the lower eyelid (the one I didn't
model) you can use the same techniques.
Animating

Now that you have the blink
setup done, open the graph editor, (for this
part it doesn't matter which way you did it)
and I'll show you how to set up a basic timing
for the animation. Yours will depend on whether
you are doing some cartoon project or a realistic
one.

You need to add 4 more keyframes
(for total of 5) and put them the same way is
in this picture:

Tutorials LightWave 3D Eye Blink Grapheditor

Tutorials LightWave 3D Eye Blink Eyes
I used the morph techinque for this example.
<table align="center" border="1" cellpadding="5" cellspacing="0">
<tr>
Key

Frame

Value

</tr><tr>
<td>1
</td>
<td>1
</td>
<td>close
</td>
</tr><tr>
<td>2
</td>
<td>10
</td>
<td>open
</td>
</tr><tr>
<td>3
</td>
<td>16
</td>
<td>close
</td>
</tr><tr>
<td>4
</td>
<td>20-25
</td>
<td>open
</td>
</tr></table>

To the last key add a post behavior "repeat" 20-25
is because this time the eye is open. You are
not opening and closing your eye all the time:
you leave the eye open some time and when the
eye needs lubrication we close the eyelid and
reopen it.
]

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