4. Tp Born Position

Tp Born Position

  • H

    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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED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

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  • H

    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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED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)

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  • H

    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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED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

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  • H

    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.

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  • H

    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 :-)

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