Re: Particle event problem...

[Dan Yargici <dan(at)imajonline.com>]

Hi Mathieu,

Thanks for your help, it's *really* appreciated... :)

Right now I'm not using any deformations, just 1 goal and 1 turbulence. :)

What I'm trying to do here is achieve the Finding Nemo school of fish 
effect where they form into various shapes/formations.

Here is where I am now:
http://www.danyargici.com/MEDIA/MOVIES/fish_school_anim_test.mpg

The problem, as you can see, is that some of my fish currently swim on 
their sides at various points of the animation.  Now, these are just 
low-poly stand-ins; if I use the real fish, with larger fins and all the 
rest, this becomes *very* noticable.  What I really need is the result I 
get with 'Align on velocity' switched on, just with an up vector.  At 
first I thought I might be able to use a particle event to correct the 
rotations, but this is always overridden by the 'Align on velocity'.

The trouble is, I noticed this after the clients started jumping with 
joy and patting me on the back because they were so happy with where it 
was going..... doh!

Like I said, any help you can offer, even just a hint, would be *hugely* 
appreciated.

Cheers,

DAN

Mathieu Leclaire wrote:

> Are your particles deformed by a curve? Because I think that if it's the
> case, the scripted event will be called before the curve deformation which
> means the velocity is the one before the curve deformation is called... you
> can use something like this if you want where "Set oCrv =
> Dictionary.GetObject("crvlist")" is where your script extracts the curve so
> just change "crvlist" by the name of your curve. I'm assuming here that your
> particles are shooting straight up on emission starting at Y=0 and that's
> why on "EvaluateCurveAt( oCrv , aPtPos(1,i)/oCrvL, True, posx, posy, posz,
> tanx, tany, tanz, normx, normy, normz )" I do "aPtPos(1,i)/oCrvL" which
> divides your particle Y value by your curve's length which gives me the
> percentage of the particle on the curve and from there I can extract the
> tangency of the curve at that percentage which gives you the correct
> velocity direction after the deformation.
>
>  

---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi