Adding tip to strands and driving the growth.

Discussions about SOFTIMAGEs© Interactive Creative Environment©
User avatar
pdesopo
Posts: 54
Joined: 08 Jul 2011, 21:49

Adding tip to strands and driving the growth.

Post by pdesopo » 01 Oct 2011, 08:14

Hi,

I've a simple scene with a basic growing strand setup. I'm trying to figure out how to add a tip to the strands like for example, a sphere right at the end of each strand.
It's something like what we see in the 3D view port when we preview any ICE simulation:

Image

I guess the second question is a harder task. I'd like to control the growth of the strands via a second mesh, so that I can move the controller to decide which strands make them growing.
Roughly sketched in this screen grab, where the transparent sphere should control the strands:

Image

Any help would be appreciated.
Thanks.

User avatar
Mathaeus
Posts: 1778
Joined: 08 Jun 2009, 19:11
Location: Zagreb, Croatia

Re: Adding tip to strands and driving the growth.

Post by Mathaeus » 01 Oct 2011, 09:20

Hi,

Here is one two-point cloud setup.

cheers

User avatar
pdesopo
Posts: 54
Joined: 08 Jul 2011, 21:49

Re: Adding tip to strands and driving the growth.

Post by pdesopo » 02 Oct 2011, 03:47

Thanks Mathaeus.

The balloon file is really interesting. I'm trying to duplicate that setup on my scene, somehow I cannot get it working. Is there any issue using that setup with a simulated ICE? I've some growing strands.

By the way, I made a rough animation in C4D to show what I meant about the growth controller:
http://phoenixart.com/temp/SI/093011/gr ... lowres.mov

I was wondering how to get a similar result in SI.

User avatar
pdesopo
Posts: 54
Joined: 08 Jul 2011, 21:49

Re: Adding tip to strands and driving the growth.

Post by pdesopo » 02 Oct 2011, 08:13

Mathaeus,

I've replaced the original grid in the balloon file with a sphere, so far so good.
Anyway, animating the strand length I get this weird issue:
(frame 0)
Image

(forward...)
Image

Some of the strands are moving toward the point 0,0,0.
Is there a way to fix this?

Thanks.

User avatar
Mathaeus
Posts: 1778
Joined: 08 Jun 2009, 19:11
Location: Zagreb, Croatia

Re: Adding tip to strands and driving the growth.

Post by Mathaeus » 02 Oct 2011, 13:13

Controller in c4d, this would be 'modulate by ...' in ICE, or you create some another way of connection.
It should work with simulated ICE tree, however you'll see 'final' result only by loading the cache.
Only 'driver' Point Cloud is for simulation.
Inverted direction, honestly I have no idea, never sow something like.