Smoke anyone?

[fxgogo]

Post us a pic to see where you are at. I had started some experiments on smoke a while back. I have a thread somewhere on this C4d forum. That might help. I hope to carry on with that soon......time allowing.......:)

http://www.cgtalk.com/showthread.php?s=&threadid=7865

[anobrin]

You mean like this????

http://66.70.166.29/promo/smokae2.mov

[matty2x4]

anobrin : kind of, but way more violent, fast and straight. (like an exhaust pipe)
fxgogo : After looking at yours then going back to myne... the answer is no. Im not gonna post any pics myne look crap! I think im way off the mark. Did you use any plugins? I will keep trying and mybee post somthing soon.
matty

[fxgogo]

I did not use any plug-ins. Just the basic tools. I feel I am still way of the mark like you, but I will work on it a bit more soon. Have a look at that thread for the settings I used. As for the movement of the particle, I have not thought of that yet myself, but I would think I would use multiple emmitters with quite a few froces acting on them.

[matty2x4]

ok here is my exhaust smoke so far...
I still think it looks more like a mud hoze. It will usually be on a dark background, ive used white here to get an idea of whats going on.

http://www.angelfire.com/amiga/matty/anims/smoketest.html

2x4

[fxgogo]

Ok, I would suggest more transparency on the particles. Bigger particles with a fresnel on the alpha channel to make the edges have soft edges. And yes give it a go on black

[kiwi]

Also try experimenting with noise in spotlights...might work if there is enough lights.Even better put the lights in an emitter :)


Stu.

[say-g]

what happens when you put a light in and emmiter ?

[kiwi]

It becomes just as any particle would :) You can put anything in an emitter I believe,within reason though.


Stu.

[Cinema1954]

Here's a link to an image I did testing lights in an emitter to make smoke: http://www.renderosity.com/viewed.ez?galleryid=250358&Start=1&Artist=Cinema1954&ByArtist=Yes

[matty2x4]

ok so I put fresnal in the alpha... looked much better, but not quite right. I then had the great idea of putting a object blur on the paritcles (not much). It was looking great, how ever after 3(ish) days to render 9 small frames it finally came up with the old faith full "not enought memory" I will rerender a single frame to post soon, but can any one think of a less system intencive variation on the aformentioned?? I am about to give up on my smoke idea it was only ment to suplement a wip not take it over.
2x4

[say-g]

nice smoke cinema, i got nfi how ppl utilize particles to do shit for them D: its all bloody h4x

[Cinema1954]

say-g...

Emitters are really pretty simple... you put stuff in them, and bunches of them come out!

The trick is in making those bunches of things look like something other than bunches of things. By dropping a visible light into an emitter then playing with birth rate, scaling, speed, etc. (and modifiers like gravity, fan, randomize, and so on), you can make a pretty cool-looking glowing gaseous thing. Make the lights black, and you've got dark billowing smoke.

Play with it!

[matty2x4]

I cant seem to get the end scale setting to work...
I would like the far particles to fade away/smaller. I type in .5 (it is 1) "ok" and then reopen the emitter and its back to 1? well here is a pic of what it looks like at the mo... movie to follow soon.
2x4

[matty2x4]

and here is the movie... its small!
http://www.angelfire.com/amiga/matty/anims/smoketest.html

[Pate]

Originally posted by matty2x4
I cant seem to get the end scale setting to work...
I would like the far particles to fade away/smaller. I type in .5 (it is 1) "ok" and then reopen the emitter and its back to 1?


Do you have a parameter track for the emitter in your timeline?
I think that would cause such behaviour...

At least I have many times wondered why various settings do not stick, only to find I have a parameter track that overrides the settings whenever I move the time slider.. :rolleyes:

Pate

[Bucko]

A way to make thick smoke without Pyro:
Create an emitter, point it upwards.
Create a light:
General->Color it black, make it visible or volumetric, make noise visible, check No light Radiation
Visiblity->Choose a good inner distance, set outer to 50% more. Brightness 100%, dust 100%.
Noise->Hard turbulence (or whatever), uncheck local coordinates, set velocity vector to x=0, y=1,z=0 and speed to whatever you like (try going a bit slower than the emitter speed).
Put the light into the emitter and thick billowing smoke will come out.

Shadows? Sadly C4D 7.x does not allow particles to be billboards but with some Coffee and/or C4D8 perhaps render a smokepuff againt white, create a black texture with the smokepuff render as alpha, put it on a disk the same size as the light, have it facing the sun/light, give it a render tag with cast shadows, not seen by camera.

Flames? That's the subject of another post.

BTW Does anybody know if particles can have track tags in R8? You can do LOTS of fast particle effects if billboarding is possible.

[matty2x4]

to tell you the truth I have given up on smoke, its to hard, is to slow, dosent look convincing, takes up to much RAM and processor power and most of all pisses me of to no end.
I will however give your version a try Bucko it sounds good, thanks
I have pretty much decided to look into smoke as a post effect.
matty

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