Particles along path

#1

Hi!

I have a question/problem concerning particles.

I have a image with an car. Over this Image I want to animate particles which behave like smoke in a wind-tunnel.

If i create a spline for the particles - they don’t follow that spline - they just emitte from/on it.

So, how can i create a particle system that follows a path?

I hope you can help me.

Many thanks in advanced.

Cheers,

mzee

#2

I think what you are looking for is something from 3d like a path follow/constraint.

So far I know you can’t do it that way in combustion, but…

you can draw some deflectors over the shape of the car and place your smoke emitter in front of it.

hope that helps.

#3

Thanks for the quick reply :thumbsup:
It’s really a pity that this doesn’t work as i thought i could work - i think i will do it in 3d because using deflectors seams to me a litte bit circumstantial.
Any other suggestions to solve this problem?

#4

If you are using Combustion 4 there is a new expression for moving an object along a defined path. CB.GetXPathFrom and CB.GetYPathFrom can be found in the “Creating a Motion Path from a Polygon” section in the help. Also you should be using a point emitter and animate/track that to the footage.

Hope this helps,
-Eric

#5

Thanks for the tip! Sounds good to me - i will try it later on! :thumbsup:

#6

hi!!

you can do the particles along path by using tracker in combustion…

follow the below steps:

take a smoke particle
put the particle wherever u want
click tracker window
select position -> (one box will display in the screen, u have to choose one reference point for the partcle tracking (like near place dark color point), this is for position)
if u have ratotaion also then select rotation , then do same thing,

then select “select all tracks” option, (if u select position and rotation, or else don’t select)

then click on analyze (">" symbol), automatically it will creates a path.

after analyzing click on “off” option

then play, the particle will go along the path.

#7

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