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[Adobe TV Presents...]
[Paul Trani in...]
[Adobe Flash Professional CS5, Training with Trani]
Hello, and welcome to Training with Trani.
My name is Paul Trani, and I'm going to take you through the
Bone Tool and really show you some cool springiness
that you can add to really enhance any
sort of IK, or Inverse Kinematics, that you might want
to add to any sort of animation you're doing.
So here I am, I just have this simple FLA file open,
and I sure enough have this skeleton.
So let's just double-click on the skeleton.
And inside of this movie clip,
you can see I actually already have a bone structure in place. P
So I'm just going to do a "Command Plus," just to zoom in,
and you can see that there is already some
IK, Inverse Kinematics, some bones
connecting, obviously, the different skeletal bones here.
So what I want to do is I want to go ahead select
the Bones Tool.
I'm just going to finish out this arm, so I'm just going to click right where this
IK ended and go to the forearm
and then clear down to the hand, just like that.
So I've added that IK structure right there.
Now what I can do is I can select,
using the selection tool, and go ahead and grab the hand.
You can see how it works.
Sure enough, you can kind of do the wave or whatever.
But, obviously, you can see that his shoulder
gets disjointed.
You will have this happen from time to time,
but all you need to do is just kind of move that to where you want it to be,
and then you can lock it down.
So if I take a look at my Properties panel on the right side,
notice that I can enable or
disable and even constrain the rotation
of any IK bone.
And that's what I want to do; I want to disable any sort of rotation.
So I'm just going to uncheck.
That locks down that shoulder, looks great.
Now I can have him wave, or whatever the case may be.
But what I want to do is I want to animate him.
So I'm going to animate him starting at this position with his hands down,
and I'm just going to kind of come in
to about, say, frame 30.
And for frame 30, what I want to do
is I'm going to go ahead and raise his hand at that point in time.
In fact, I'll grab this other hand as well,
kind of raise it up like that.
So now he has both his hands in the air.
Now, notice that it adds that key frame right there.
It actually adds a pose.
So if I just hit the Return key,
you can watch it kind of come into place.
But what's going on here is I have some
additional motion going on.
I have some springiness going on
with this arm.
Check that out.
So again, no poses down here, but you can see it move around.
Very cool, and it just adds a nice, fluid movement.
And that's what I want to do here with this arm.
So again, all I'm going to do is go to about frame 30,
and I'm going to select this armature
right here so it's highlighted in blue
and I'm going to go to my Properties panel.
And down here at the bottom, this is where I can control the springiness.
So from here I can maybe make the strength.
I guess, for the
forearm I might want to have the strength
to be about 20, so it's not real strong.
And then the dampening about 90, so it's going to
actually train off for longer.
I can even add some springiness to
his upper arm right here, and, again, I might just sort of reverse this.
Again, it's the stronger part of the arm.
I'll make the strength 90 and dampening 20,
basically reversing those numbers.
All right, so let's go ahead and check that out.
I'll hit Enter, and you can see that, sure enough,
it kind of does a little wave, there.
And again, this is all animation
that, other than adding a pose, I didn't actually have to create.
So that's it for bones and springiness.
So please join me next time as we cover
some other great features in Flash Professional CS5.
[Executive Producer, Bob Dorlon; Producer, Karl Miller]
[Director/VFX, Kush Amerasinghe; DP/Post Production, Erik Espera]
[Adobe TV Productions, tv.adobe.com]
