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1Tutorials LightWave 3D Break a box from the sky! Empty Tutorials LightWave 3D Break a box from the sky! Qua Jan 26, 2011 4:03 am

Admin

Admin
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by Demian Kurejwowski
Tutorials LightWave 3D Break a box from the sky! Pixel_black
Download source
files here.
Tutorials LightWave 3D Break a box from the sky! Pixel_black


I saw this animation in the Lost
Pencil Animation Studios homepage, they also
are giving the scene, I made it using other plug-in,
I want to participle and help other that started
like me.

In this tutorial I will show
you how to use the SG_Explosion2, Crack
It!
, and Jolt! plug-ins,
so you can have more tools in the future for
your projects.

Tutorials LightWave 3D Break a box from the sky! Image002
Tutorials LightWave 3D Break a box from the sky! Image001

Theory:

SG_Explosion2 takes
all the adjacent polygons of a piece, and understand
that this is a fragment of geometry.
[Tens de ter uma conta e sessão iniciada para poderes visualizar este link]

The Crack it! plug-in
will cut the mesh that you have into breakable
pieces so SG_Explosion2 can explode
them. [Tens de ter uma conta e sessão iniciada para poderes visualizar este link]

The Jolt! plug-in will
make our camera (or any other object) shake when
some thing happens. Comes with lightwave. (Example: Shake
the camera as if some horrible huge creature
jumps on the ground.)

Create a box with the default
settings, and save it as cracktutorial.lwo

Tutorials LightWave 3D Break a box from the sky! Image025

In the second layer, create
a box. This one will be our floor.

Tutorials LightWave 3D Break a box from the sky! Image005

Excellent!!! Now, we are going
to cut into pieces the box so it can break, for
this we are using the Crack It! plug-in.
Run it (look for it under Construct Tab |
Additional
).

Tutorials LightWave 3D Break a box from the sky! Image006

Set Iterations to 6, Randomness
in Direction
to 60, and Randomness
in Proportion
ot 40.

Feel free to play with the
settings. No matter which settings you use, they
won't affect the tutorial.

Don't check the option for Distribute
Pieces to Empty Layers One by One
.

Tutorials LightWave 3D Break a box from the sky! Image027

This is what happened after
I set my settings (6,100,100). Now my cube has
been broken into many chunky pieces. The SG_Explosion2 plug-in,
works on polys that are connected and takes them
as an object to send it away (this is why we
use the Crack It! plug-in, it cuts it
for us).

Save your object (with the 3
layer the box, the floor, and the cracked box
from layer 1), and send it to Layout.

Tutorials LightWave 3D Break a box from the sky! Image028

You can delete layer one from Layout.
We are not going to be using it.

Open the object properties for
layer 3, and add the SG_Explosion2 displacement.

Tutorials LightWave 3D Break a box from the sky! Image012

Now, be patient. It is now computing
all the information of the polygons so it can
explode them with the default settings. If the
mesh is too high, you can go back to Modeler and
select less polys (less blocks). I made this
tutorial on a P4 1.4Ghz with 128Mb of RAM and
a Ge-Force2 MX, and it worked fine.

The
problem with this plug-in is that every time
you move something in Modeler, or sometimes
in the same object in Layout, it makes funny
stuff with the explosion. Don't worry. Just
copy the SG_Explosion2 displacement, remove,
and paste!!! It will recalculate the polys.


The
plug-in has no bouncing option, so the polys
stay in place once they touch the ground.


As you can see, we have an explosion
for everywhere. We have to fix this. So, for
now, we are going to set the parameters to break
the box like its coming from the sky.

Tutorials LightWave 3D Break a box from the sky! Image029

These are the settings I used:


  • Center: X=0 Y=0 Z=0
  • Initial frame: 20 (check the box "As frame",
    so the action will start at that frame)
  • Velocity: 100
  • Acceleration: -10
  • Power: 5
  • +/-: 2
  • Range: 2 meters (How far will the pieces
    go?)
  • Duration: 50 (How many frames will be animated?)
  • Vertical and Horizontal Attenuation: 30%
    (experiment!!)
  • Angular Velocity: 180°
  • Gravity: 9.81
  • Randseed: 50,000
  • Restrict Trajectory: uncheck
  • Trajectory distortion: check
  • Max Distortion: 180°
  • Ground Collision: check
  • Ground Level: 0 meters


Done? Ok. That's how it looks
like when it breaks. No.

We have to animate the box falling
from the sky.
<table align="center" border="1" cellpadding="5" cellspacing="0">
<tr>
<td>1 key frame</td>
<td>2 key frame</td>
</tr>
<tr>
<td>Frame=0
Y=8 meters
</td>
<td>Frame=20 (when SG_Explosion2 takes
action, right?)
Y= 0 meter
</td>
</tr>
</table>

Let's add a little bit more
action. Add a null to the scene. Call it smoke,
and make it particle emitter.

Tutorials LightWave 3D Break a box from the sky! Image030

Now, you have a different way
to animate the smoke, add the null to layer 3,
and generate particles by Collision Event,
and set the floor as a Collision Object,
or by my way (I like to do it this way because
you have more control over the particles).

Ok, in this step, you will be
adding the settings for the smoke. The only tab
we are going to be modifying is the Motion tab.
Under this, set the Vector Y to 10mm, Explosion to
1, and Vibration to .1

Tutorials LightWave 3D Break a box from the sky! Image031

Tutorials LightWave 3D Break a box from the sky! Image032

Now, we have to animate the
generation of particles by hand. So, open the Graph
Editor
with the small E next to Birth
Rate
under the Generation tab,

Tutorials LightWave 3D Break a box from the sky! Image033

and set to more keyframes.
<table align="center" border="1" cellpadding="5" cellspacing="0">
<tr>
<td>1 key</td>
<td>2 key</td>
<td>3 key</td>
</tr>
<tr>
<td>Frame: 0
Value: 0
Incoming Curve: TCB Spline
</td>
<td>Frame: 20
Value: 120
Incoming Curve: Stepped
</td>
<td>Frame: 35
Value: 0
Incoming Curve: TCB Spline
</td>
</tr>
</table>

For final detail add Hypervoxels,
you can use the Smoke preset.

Easy! Right?

Now, select the camera at frame
0, and use these settings:


  • X: 0 meters
  • Y: 5.5 meters
  • Z: -8.5 meters
  • H: 0°
  • P: 40°
  • B: 0°


Now, press the m key,
so the Motion option comes up. Now,
under the IK tab, add Modifier.
Look for Jolt!.

Tutorials LightWave 3D Break a box from the sky! Image023

Tutorials LightWave 3D Break a box from the sky! Image024

It's very simple to use, don't
be afraid.


In the Keyframe tab, take the Jolt! key
bar to frame 20 (remember? The entire explosion
and all the mambo jambo is going on!!!).

Create the key. Now, you have
a key, but you have to tell Jolt! what
you want to happen.

You can set the settings as
you want, but the people who made this plug-in
gave us a fast option, under the keyframe you
press the Heavy button.

Leave the check for Falloff,
you don't want to be jumping all the time.

Setting the camera Motion
Blur
to 50% well be fine, check the Particle
Blur
too.

The tutorial is over but you
will find my scene different, because I added
some other stuff.

SG_Explosion2 doesn't
have a Bounce option. I added some particles
and set the floor as a collision plane, and made
Hypervoxels to look like other parts of the box.
I also added another layer with another cracked
box, to create more parts (with the same settings).
]

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