Tp Born Position

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 03/03/2012 at 17:28, xxxxxxxx wrote:

Hi all,
I'm trying to storage the position of all particles of a group when were born.
Here's my code:

tp = doc.GetParticleSystem()

TpGroupA = op[c4d.ID_USERDATA,1]

cntGroupA = TpGroupA.NumParticles()
PPGroupA = TpGroupA.GetParticles()

PPGroupStart = c4d.Vector
PPGroupStartPos = []

for i in xrange (cntGroupA) :
if tp.IsBorn(i)==True:
PPGroupStart = tp.Position(PPGroupA _)
tp.SetPData(i,0,PPGroupStart) # I have created a Channels (vector) where storage the position
PPGroupStartPos.append(tp.GetPData(i,0))

But it works only when I play the scene from the first frame... If I jump from a frame to another the Channel value became "None"

What's wrong in this code?
There's another way retrive the born position of particle?

Cheers

Luther

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 06/03/2012 at 17:35, xxxxxxxx wrote:

not sure hat is going wrong, but the setup looks quite compilacted. why don't you use just a python node with a TpParticle input port and plug a PPass node into it ? the *code *would be :

import c4d
  
mycache = []
  
def main() :
    if tp.IsBorn(pid) :
        tp.SetPData(pid, 0, tp.Position(pid)) 
        mycache.append(tp.Position(pid))

can't see a reason to do the iteration stuff yourself (ps : tp as the documents master particle system is predefined and pid is the name of my TpParticle input port)

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 09/03/2012 at 05:44, xxxxxxxx wrote:

Hi Little Devil,
thank you so much for you reply. I'm a little bit confused, I think that I don't understand very well what do you suggest.
I attach my c4d scene, so you can see what I really want to do:
https://docs.google.com/open?id=0B4E_u8h_R81SSGdrX1BnZkdTRm1Nb0VLblM5VVZuUQ

Another thing, in a older your post I read that if I want to generate all particles at frame 0 I have to cache first my particle. Can you write me a little example of this code?

Cheers

Luther

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 09/03/2012 at 13:37, xxxxxxxx wrote:

i think i am getting something wrong, it is very simple, i have attached an example.

http://www.2shared.com/file/mpgLW-\_R/LineStartPGroup002.html

to your second question : can't see a reason for this, please explain what you want to achieve. basicly it would be the same. check if it is frame 0, check if particle id is related to a born particle and then do something with this id.

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 13/03/2012 at 06:02, xxxxxxxx wrote:

Hi Little Devil,
sorry for the late responce... Thank you so much for you reply, now I have understand.
For the second question, never mind... I was confused