Particles to curves

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Hi,

I have done some research and I havent yet found any solution how to convert particles to curve like bezier or NURBS. Another issue is how can I born 1 particle per/frame in houdini? These are pretty beginner questions but I dont want to give up.. I want to learn new things because I see theres no limits in houdini Maybe someone could help me with this issue?

Example: I have 6 emitters which are emitting particles and some particles are born twice per frame even if there is born propability 1 and 1 so I assume that I get 1 particle per/emitter/frame is this correct. How I should build this so that I get particles to curves? I think first thing is to get the particle id:s in order

felixi
-felixi-
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Tervetuloa!

A constant birth rate of $FPS does birth 1 per frame for me.
Impulse birth rate of 1 births one particle per cook, so I guess in
some cases it might be a bit off.

For the curve generation you could generate a line with as many points as you have particles, and then move the curve points to particles with $TX2 etc in a Point SOP (see attachment).

As usual with Houdini, there are probably many ways to skin a cat - Trail SOP might be worth a look as well.

eetu.

Attachments:
felixi_particlecurve_01.hip (44.0 KB)

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Simple scene , that might help

Rob
Edited by - Dec. 3, 2008 06:39:16

Attachments:
rse_emitStream.hip (68.3 KB)

Gone fishing
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There's also a nice example similar to this on the ice cream thread on odforce.

http://forums.odforce.net/index.php?showtopic=7902 [forums.odforce.net]

Look at the .hip file posted by aracid.
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circusmonkey
Simple scene , that might help

Rob

A small typo in there, the group parameter in the popnet Source SOP
should be grp_points instead of group1..

That's what one gets for trying to make things more legible by renaming nodes..

eetu.
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Fixed ….that's what happens when you work late
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These are very nice examples. Thanks!

I will do some exploring and I try to get some results for my scene
-felixi-
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