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comanche
06-30-2003, 06:40 PM
Hi all,

is there a way to achive an explosion like effect to objects in LW, like you can see in the Qt movie? I've used a simple ring object to demo the effect I'm after, but it could be any geometry.

Searching on flay for 'explosion' shows a few results. So any hint ("take THIS plugin to achive the effect") is highly appreciated.

QT Movie (500kb) (http://www.calmbach.com/demo/explosion.mov)

Cheers,
Andreas

HowardM
06-30-2003, 07:20 PM
I dont understand?
How did you do it in the QT?
Polygon size?
Anyways, there is C4 and SG_Explosion to blow stuff up and Crack_it to break it up.

aurora
06-30-2003, 08:32 PM
I've used SG_Explosion2 and it works pretty decently. Naturally tweaking makes it better. I can't remember where to find SG_Explosion2 but you can find CrackIt for it here

http://www.infoseek.livedoor.com/~f_ichikawa/plugin-page.html#CrackIt

Howard - I Love your new signature!!!

aurora
06-30-2003, 08:33 PM
It figures I just found it. Heres the link for SG_Explosion2
http://www.informatik.hu-berlin.de/~goetsch/Englisch/ExploMain_e.html

Kvaalen
06-30-2003, 08:34 PM
I think that Kaboom uses particles to make the fragements fly away. In that case you can make the particles explode outwards and then back in. I've never used it so I'm not sure.

C4 has the option of making an envlope for the power and giving it an inverse value makes it explode backwards (if you understand what I mean), but even though there is an envlope it only uses the value at the initial time. :shrug:

Something else you can do to work around it is: lets say you have a camera that goes from frame 0 to 60, have a clone that goes from 0 to 60 but with the keyframes inversed. then render from frame 0 to 30 with the first camera and from 30 to 0 (make sure the frame step is set to -1) with the second camera.

I can try to show you an example if you don't understand.

comanche
06-30-2003, 10:58 PM
Thanks everybody. I'll give the free plugs a try ('cause it's just an exercise I don't want to spend money on it now).

Aurora: thanks for the link!

HowardM: it's done in Cinema. I want to try something similar in LW - just to learn Lightwave!

Kvaalen: I understand, thanks!

So thanks again for all your help. (If someone has any further tips, please let me know)


Cheers,
Andreas

HowardM
06-30-2003, 11:02 PM
ok, well you can use an emitter to blow out particles, that have linked object pieces...then use a Gravity to suck the particles back in....

comanche
06-30-2003, 11:17 PM
I'll have a look at the particles solution. Thanks, Howard.

Cheers,
Andreas

Chagidiel
06-30-2003, 11:23 PM
Just a little annotation about C4 and SG_Explosion.

They are the same thing, written by the same author Sebastian Goetsch (SG). Only that C4 is a newer and better version of SG_Explosion with several additional features the latter does not have (timewarp for example).

C4 site (http://www.informatik.hu-berlin.de/~goetsch/C4/)

Cheers

Skidbladnir
07-01-2003, 12:02 AM
If you are using C4 you can easily achieve this 'reassembling' effect with an envelope on the timewarp parameter.
Simply set a key 1.0 at the first frame and -1.0 at the last frame of the animation.

Kvaalen
07-01-2003, 12:12 AM
Originally posted by Chagidiel
Just a little annotation about C4 and SG_Explosion.

They are the same thing, written by the same author Sebastian Goetsch (SG). Only that C4 is a newer and better version of SG_Explosion with several additional features the latter does not have (timewarp for example).

C4 site (http://www.informatik.hu-berlin.de/~goetsch/C4/)

Cheers


Yep! C4 has more advantages and is better, but there are still some stuff I like better with SG_Explosion. :thumbsup:

Originally posted by Skidbladnir
If you are using C4 you can easily achieve this 'reassembling' effect with an envelope on the timewarp parameter.
Simply set a key 1.0 at the first frame and -1.0 at the last frame of the animation.

I posted this option in my earlier post and I also explained why it won't work. :shrug:

Skidbladnir
07-01-2003, 03:10 AM
@Kvaalen:
It's the timewarp that needs the envelope, not the power parameter.
Fading from +1.0 to -1.0 will produce exactly the effect from the QT movie

Kvaalen
07-01-2003, 08:13 AM
Originally posted by Skidbladnir
@Kvaalen:
It's the timewarp that needs the envelope, not the power parameter.
Fading from +1.0 to -1.0 will produce exactly the effect from the QT movie

Ah! It works! :thumbsup:

I just tried it and it works great.

comanche
07-01-2003, 08:42 AM
Thanks a lot for all the input! So C4 seems to be the tool I was looking for.

:thumbsup: :thumbsup: :thumbsup:

Cheers,
Andreas

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