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View Full Version : How can I do realistic space explosion like movies??


Valter
08-08-2003, 10:03 AM
Hi all.

I'm have some questions about it. I'm try to make explosion with volume light, I liked, but I can't get results so realist as space movies.
So I'm think to use particles + Hypervoxels. I don't have idea how should be particles behavior to get a realistic explosion when add HV. I would appreciate if someone could tell me what's better way to do it. I really need realism.

thanks

Randog
08-08-2003, 11:02 AM
Originally posted by Valter
Hi all.

I'm have some questions about it. I'm try to make explosion with volume light, I liked, but I can't get results so realist as space movies.
So I'm think to use particles + Hypervoxels. I don't have idea how should be particles behavior to get a realistic explosion when add HV. I would appreciate if someone could tell me what's better way to do it. I really need realism.

thanks

There are many, many different elements that make up a space explosions when they are used in a film. Many times you have a combination of digitized practical explosions and cg elements.

If you have an image sequence of an explosion/fireball you could probably combine it/them with some LW work to to get a pretty decent effect.

Do not try to do it all in camera. Leave the final compositing to a compositing program - if you have one at your disposal.

While I know this probably not the answer(s) you were looking for, it is the most accurate.

Good Luck - I look forward to seeing some of your test.

robewil
08-08-2003, 11:15 AM
How can I do realistic space explosion like movies??
This is a trick question. There has never been a realistic space explosion in the history of cinema.

prospector
08-08-2003, 12:59 PM
Yea hu?

I don't remember anyone taking a stick of dynamite or can of gas and exploding it to see what one really looks like.

We all need to e-mail NASA and ask them to schedule that for the next mission and film it.

the ONLY thing we are sure of and they don't follow in the movies, is that in space no-one can hear you explode.
No air = no sound.

richpr
08-08-2003, 01:09 PM
no air/oxygen=no fire too... ;)

It seems a lot of stock explosions are used for that kinda thing... a bit like fire... Difficult to reproduce...

However, an elaborate setup with hypervoxels and particles should create something that might look convincing for some sort of space explosion...

I would probably use a plugin to break an object up and then have pieces fly out from the center of explosion. Pieces should rotate. The explosion would be hypervoxels... going from bright white, to blueish and perhaps red and yellow while fading out...

Typically other hypervoxels would make up black/grey smoke, but in space... There is no gravity either.... But there should be like remnants... I guess everything should look gaseous and fade away rather quickly...

richpr
08-08-2003, 01:16 PM
One example of an explosion in space and it's remnants is of course the supernova, however the scale is a bit different ;)

Oh and finally, the people over at LWG3D.org are pretty heavily into space things (Star Trek, Babylon, etc)... They could probaby tell you...

Valter
08-08-2003, 01:36 PM
Thanks Rick :)

I'll try to make an elaborate particles setup with many wind generator to make vortex inside particle explosion. Maybe work fine.

Thanks

Macet01
08-08-2003, 03:27 PM
If you go to preset central and look at the presets under ParticleFX>Scenes there is a d**m good space explosion scene there for download and reverse engineering.

Skonk
08-08-2003, 04:01 PM
a combo of lots of things would make a nice explosion.

HV's to create the fire and smoke, particles to create sparks (u can also turn each particle into an emiter so it leaves a trail behind it, very sexy), lensflares, make a flare suddenly grow HUGE right at the point of the explosion, so it whites out the screen almost, and then quickly fades away. Add chuncks of debris, linked to particles maybe.

I made a nice one ages ago but i lost it when my hard drive when fubar.

James..

Valter
08-10-2003, 07:47 AM
Hi guys thanks for reply.

Here is a test that I make using only 1 volume light. I'll try in the next test to make using particles and HV, because fire motion of explosion is not so good using only volume light textures.

cheers

papou
08-10-2003, 02:09 PM
try SGexplosion.p or C4 to explode your object and anim with some random rotation!
i think, you can push your Lens too.

richpr
08-10-2003, 04:21 PM
Nice start... try aiming a piece of debri just past the camera... always a nice effect, especially when rotated...

stib
08-11-2003, 12:07 AM
give the camera a shake as the explosion happens. This really increases the visual impact, without much extra work on your behalf. What looks good is if the camera gets knocked away from the explosion as the shockwave hits it.

Valter
08-11-2003, 12:56 AM
oh yeah piece fragments near of camera will be good. I will shake the camera. I did make another version with a large bright (full camera) in moment of explosion,I did think this last was better.

thanks guy =)

OFF
08-11-2003, 02:16 AM
http://www.newtek-europe.com/uk/community/lightwave/darkside/3.html

Maimo
08-11-2003, 02:22 AM
a shokwave would be cool. A transperent disk racing outward, you could use fractle noise and have the texture shrink in scale inward as the disk moves outward... or something like that.

Keyton
08-28-2003, 01:28 AM
"SGexplosion.p or C4 to explode your object and anim with some random rotation"

Dear Papou,

Where can I find these plugins?

Thanks,

Keyton

wizlon
08-28-2003, 03:02 AM
Here's my favourite, some other great stuff on this site also.

http://www.iedproyectos.com/ied/lem/lem05.htm

Space Explosion Scene Files:

http://www.iedproyectos.com/ied/lem/Archivos/Anular_exp.zip

Lee.