K Means Clustering

iamVFX · Post by **iamVFX** » 14 Oct 2012, 07:54

Can you rephrase the question please?

Bullit · Post by **Bullit** » 14 Oct 2012, 09:30

Ok. Thinking about it again it is more the case of turning several objects into a unique object conforming to a reference form.

iamVFX · Post by **iamVFX** » 14 Oct 2012, 11:52

K Means Clustering compound provides unique island indices by which you can filter and move points as if they were a separate object, if you mean it

[rimg=250]http://img59.imageshack.us/img59/9571/30fb5cfd29454a4388e3ac0.png[/rimg]

Bullit · Post by **Bullit** » 14 Oct 2012, 14:39

But unique objects are necessary for export for other packages i think.

gustavoeb · Post by **gustavoeb** » 14 Oct 2012, 18:55

Looks very intersting for stone walls, or stone giant creatures and stuff...

good job

Ahmidou · Post by **Ahmidou** » 14 Oct 2012, 21:39

@bullit: Then script it, polygon island are easy to isolate via the SDK! And by the way, you can't create new objects with ICE

Falam · Post by **Falam** » 14 Oct 2012, 22:24

iamVFX wrote:K Means Clustering compound provides unique island indices by which you can filter and move points as if they were a separate object, if you mean it

[rimg=250]http://img59.imageshack.us/img59/9571/30fb5cfd29454a4388e3ac0.png[/rimg]

Beep, Beep, back up for a minute

This compound can take a solid object, and break it up as though it was modeled separately, is that what I read correctly ?

iamVFX · Post by **iamVFX** » 15 Oct 2012, 04:19

Falam wrote:Beep, Beep, back up for a minute This compound can take a solid object, and break it up as though it was modeled separately, is that what I read correctly ?

Not exactly... It breaks up geometry on islands, as if you break object with some sort of shatter tool but within of ice. And by breaks up I mean just gives the unique indices to random polygon clusters (see the screenshot from the first post).

If you want to break up the geometry by its existing polygon islands, see Guillaume's Polygon Islands Transformation using ICE, it's pretty effin awesome tool for all sorts of procedural animations.

gustavoeb wrote:Looks very intersting for stone walls, or stone giant creatures and stuff...

With such power we can make Flintstones movie!

But really not just for stones... The only limit is your imagination.

[rimg=650]http://img202.imageshack.us/img202/9987/b120de02b3c841afb3d6f43.png[/rimg]

Rork · Post by **Rork** » 15 Oct 2012, 08:16

very cool!

keep them coming, this kind of stuff should be shown out of the forums more often.

we're not just a particle app people!!

rob

iamVFX · Post by **iamVFX** » 15 Mar 2013, 18:04

Compound is updated, now you can feed custom array of center points to it

Mr.Core · Post by **Mr.Core** » 23 Mar 2013, 00:20

Yes, you can! Everyone can, I continue my K.I.S.S. workflow. And the most funniest part - that formula that you showed me - I don't understand it and I'm not used it

I guess that's not KISS, but partial understanding of the k-means article. What you show here is just a search for closest center from array of centers to each particle. And looks like you can improve this bruteforce search by get rid of the last "Find In array Node"
I got 3.3 sec against 5.0 when did this removing on 1k centers.

iamVFX · Post by **iamVFX** » 23 Mar 2013, 08:34

This is embarrassing

You're right, there's no need for second Find in Array node

olivier jeannel · Post by **olivier jeannel** » 15 Apr 2013, 12:49

Hi there,
Trying to reproduce the "Transferring cluster ids to disconnected island polygons" Ice Tree http://img542.imageshack.us/img542/2598/0d727d412162497faefb6bf.png
I get context troubles either connecting the "Cluster To Center Indices" output to the disconnect Islands" input or
to the "3d vector to 4d vector" input.

(Ice tree is on the Dragon polymesh) (but doesn't work either on the pointcloud)

I'm missing something probably obvious here...

A little help ?

iamVFX · Post by **iamVFX** » 15 Apr 2013, 13:06

Dive into the K Means Clustering compound and replace Get Point ID and Get Point Position nodes to Get Polygon Index and Get Polygon Position respectively

olivier jeannel · Post by **olivier jeannel** » 15 Apr 2013, 13:30

... I love you man

iamVFX · Post by **iamVFX** » 15 Apr 2013, 14:55

do not

K Means Clustering

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