creating cig smoke that reacts to a bullet passing

[tuna]

maya fluid effects can simulate polygons and nurbs passing through them. its not hard and its damn quick.

[mtheory]

I'd just use an emitter for the smoke and make the bullet an active rigid body.

[acidream]

the idea mtheory suggested would work. I might add that if the rigid body alone is not causing the smoke to react enough, then you could parent a radial field to the bullet, so as it passes through the smoke it will push the particles away.

sb

[tomb]

If you don't have Fluid FX try using cloud particles and an Air field with the Wake option enabled, crank up the magnitude and attentuation then parent it to the bullet.

[MIN_ELLIOT]

I have fuild effect, but have not use it yet Im trying to get the bullet to have a trail on it from the smoke to follow after it cut through it and I want to achieve a photo realistic quality

[tomb]

Well that's simple. Make the bullet a particle emitter and turn up the rate as soon as it hits the smoke. To get the interaction with the smoke use the Air field as I explained above. For rendering Particle Cloud or Smoke (from the FX menu) would be best.

edit: That's if you don't want to try fluids...

[Kabab]

Use fluids for sure on this one maybe start of by using the smoke example they have for cigarette smoke.

Just make the bullet a collision object with the fluid, the size shap and speed of the bullet will determin the motion of the smoke should look very realistic.

[MIN_ELLIOT]

I will give it a try and see if it works thanks question for you how can I all get the bullet to give off a trail in the distance like the bullet effect use in the matrix?

[tomb]

I think quite a few people have copied this effect before but here goes:
Make a tourus, squash it, decrease it's height ratio and keyframe the radius getting bigger. Duplicate it a few times with "Upstream Graph" to retain the keyframes. Offset the animations by a few frames progressively on each tourus and space them out a bit. A raytraced glass shader will do the trick and put your footage on a card behind so it has something to refract.

Here's an animated gif of what i'm explaining, just a playblast...

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