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View Full Version : A car, a wet road and lots of spray


pixelshaker
01-25-2008, 10:35 AM
Hello all,

to make it short: though i am a maya veteran i have no expercience with particles. I´ve attached a picture of a car that drives on a wet road and i have to rebuild this for a hires (8000x6000 pixels) still image.

Sure i could use photorefs and do this conventional in photoshop. but the goal is as always to get rid of stockmaterial.

I think particles should do that job and a think as well that in this case no real water sim (realflow e.g.) is needed. Maybe i am wrong.

The main problem is to get those bigger splashes of water. the fine spray should be easily done, but i have no idea how to form those water stream that flow along the car, splitting of and building the bigger splases on the ground.

maybe someone could give me an idea how to do this.

many many thanx!

optimus008
01-26-2008, 10:39 PM
Hmm you could try blobby particles, look at this tutorial and see if it has anything you could use.


http://www.mtmckinley.net/tut12.html

axiomatic
01-28-2008, 02:57 AM
for a single frame, you could use a particle flow along a surface and/or along curves to simulate that sort of parthing. if you wanted the small particles simulated aswell you could use some MEL to pick randomly pick up particles based on some locators and divert them with another goal. the particle collision event editor is also your friend here, as well as some mid point goals and turbulance to throw in more streams etc.

i don't really every feel happy with the results from blobby particles per se. i'd be thinking about taking an particle pass to use for displacement in PS, or something like mr. mercury in AE.

pixelshaker
01-28-2008, 10:12 AM
thanks for your help :)

i finally used a simple surface emitter with some air and turbulence fields and randomized emission rates.

i´ve attached a quick hardware rendered particles pass. note that this is just a basis to work on, nothing final ;)

TAVO
01-29-2008, 03:49 PM
well, if it is nothing final i think you could get a great shot, it looks really well.

Wick3dParticle
01-29-2008, 07:36 PM
Thats a good start!
Dont be afraid to blur the hell out of things. Also, try adding some blobby particles like mentioned before. You will need to blur the blobbies in your compositing software...but they would look great. A work around to using a compositing program (if you want to do it all in maya) is to instance spheres to the blobby particles and do a 2d motion blur on it when rendering.

Good Luck!

~Ilan

thehive
01-29-2008, 08:38 PM
can u post more pic na how your doing this porj nice sutff

axiomatic
01-30-2008, 12:29 AM
looks good. if you put the ridge of the car in and turn on collisions you should be able to get them following the geometry in runnels too :)

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