Ice mesh deformed by PointCloud: Need Help!

Discussions about SOFTIMAGEs© Interactive Creative Environment©
larikaram
Posts: 2
Joined: 25 Aug 2010, 10:27

Ice mesh deformed by PointCloud: Need Help!

Post by larikaram » 25 Aug 2010, 11:07

Hi guys!
I'm fairly new to Ice and i'm trying to deform a mesh with particles from a PointCloud (particles inside of the mesh) ~x( . With some research I have ended up building this ice tree! it works fine but there is a pop in the mesh points movement, its not fluid. I tried a linear interpolate, array average. fcurve nodes.. but no success!! how can i make the movement of the mesh more fluid like if the mesh was sliding on the particles .

Hope soon to be able to share my work with the community! :D
thx
lari

Image

User avatar
owei
Administrator
Posts: 840
Joined: 03 Jun 2009, 15:25
Location: Siegen/Germany

Re: Ice mesh deformed by PointCloud: Need Help!

Post by owei » 25 Aug 2010, 12:32

Hi!

Hm, you are in fact only using "closest location" to calculate the new particle position. This might cause this popping effect, because there will be only ONE closest location. You might try to use "closest locations" node and use an array average of those locations instead of just one (closest)point position. That will be not that exact because of the averaging..

hope this helps
oliver

larikaram
Posts: 2
Joined: 25 Aug 2010, 10:27

Re: Ice mesh deformed by PointCloud: Need Help!

Post by larikaram » 25 Aug 2010, 21:42

thx for the reply Oliver!

I tried to use a array average, but with no success too! maybe i didn't use it like i should, tried to place it just after the get point position and it didn't work!
Tried to add it and multiply it and the linear interpolation, but still no success...

any recommendation?? :-? i tried everything that was passing in my head but since i'm new to ice, i'm sure i did half of them wrong!! :)
thx again
Last edited by larikaram on 26 Aug 2010, 22:18, edited 1 time in total.

User avatar
Tekano
Posts: 488
Joined: 09 Jun 2009, 12:49
Location: London, UK

Re: Ice mesh deformed by PointCloud: Need Help!

Post by Tekano » 25 Aug 2010, 23:53

Hi, your tree looks like it should work, everything seems ok apart from what you have plugged into the blend of the linear interpolate node. have you tried this at 0.5 and you get correct results?

heres a simple compound example (attached) of particles deforming a grid, in order to make the grid go back to its original shape ive made another nonsimulated (put under modeling stack) ICE tree plugged in a get pointposition > set data Self.PointPosition_PreSimulate which stores the grids positions at frame 1
sideform_by_particle.jpg
You do not have the required permissions to view the files attached to this post.
Gossip is what no one claims to like, but everybody enjoys.

Ignasi
Posts: 1
Joined: 01 Oct 2010, 15:19

Re: Ice mesh deformed by PointCloud: Need Help!

Post by Ignasi » 01 Oct 2010, 15:21

I have used it today, many thanks for sharing it!