Hi Adam,
unfortunatly the velocity vectors of particles are not 'deformed' with the
deformer.
a while ago I used this particle event to let the cloud with the event to
follow another cloud.
to the particle cloud you have to create a new event,choose script and
execute evrry n frame.
your target cloud has to be named in this case "cloud_T" and has to have the
same amount of particles like your following cloud.
there's a rnd factor which you can skip and the *10 defines how fast they
follow the other cloud.
could also be linked to a slider...
hope that helps,
cheers,
Juan
event-script in vb:
===================================
set scn_root = Application.ActiveProject.ActiveScene.Root
set cloud_a = scn_root.FindChild("cloud_T")
posList = inParticleCollection.PositionArray
veloList = inParticleCollection.velocityArray
posList_a = cloud_a.Particles.PositionArray
set cloud_a_trnsfrm = cloud_a.Kinematics.Global.Transform
rnd(-1)
for a = 0 to inParticleCollection.Count - 1
'store original position
origposx = posList(0,a)
origposy = posList(1,a)
origposz = posList(2,a)
set global_prtlc_a_pos = XSIMath.MapObjectPositionToWorldSpace(
cloud_a_trnsfrm, cloud_a.Particles(a).Position )
'set new position
posList(0,a) = global_prtlc_a_pos.x
posList(1,a) = global_prtlc_a_pos.y
posList(2,a) = global_prtlc_a_pos.z
'get direction
dirx = posList(0,a) - origposx
diry = posList(1,a) - origposy
dirz = posList(2,a) - origposz
veloList(0,a) = dirx * rnd * 10
veloList(1,a) = diry * rnd * 10
veloList(2,a) = dirz * rnd * 10
next
'apply the changes
inParticleCollection.VelocityArray = veloList
===================================
===================================
end of script
===================================
===================================
-----Original Message-----
From: Adam Seeley [mailto:adam.seeley(at)clearpost.co.uk]
Sent: 03 March 2006 18:13
To: XSI(at)Softimage.COM
Subject: RE: [SPAM] Deforming particle instances
Hi Morgan,
Well you would have thought that would do the trick but nope.
Adam.
-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM]On Behalf
Of Morgan Evans
Sent: 03 March 2006 17:52
To: XSI(at)Softimage.COM
Subject: RE: [SPAM] Deforming particle instances
Adam,
In PType -> General -> under rotation velocity there is a tick box for
"Align on Velocity". This will get the particle facing the direction you
want. Once you've ticked that, goto instancing and make sure that
Rotation is set to "From Particle". That should do the trick.
Be careful to make sure that the object you are instancing is facing the
correct direction first. Try putting the object under a null and then
rotating it to guarantee that it is pointing the way you want.
Morgan
Character TD, Passion Pictures
-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf
Of Adam Seeley
Sent: 03 March 2006 17:32
To: XSI(at)Softimage.COM
Subject: [SPAM] Deforming particle instances
Hi,
Is there a way to get the instances on a particle cloud to follow the
actual direction of the particles after a deformation applied to the
cloud?
I thought this function had been added but I may have dreamt that.
There used to be a scipt around to update the motion vectors of a
particle cloud but I'm having trouble finding that as well!
Any help thankfuly recieved.
Ta much,
Adam.
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