MAYA : moving a single particle

hi
does anyone have any ideas on how to move eg particleShape1.id[1] to eg 10 in Y?

ctrl+a?

no
I want to just move the particle with id = 1 to the new position

ah
heh
I don't know
think you have to move the emitter

then i move all the particles

yes

couldn't you just select it and move it?
from the outliner

nopp, cant move it in 3d space
I konw there is possible to do it using expression, I am just having a hard time moving just one.

maybe in the componentEditor

h3ro: expressions is your friend =)

i know, but sometimes people you like hate you...just like expressions:P

hmm
like... lemme se now
something like: if particleID = 1{set translation or offset}
as a per particle attribute

how many particles you have ?

a lot:P

and that one is bothering you ?
maybe you can just kill it

I have to sett the particle possition for ca 2000 particles
I guess i can use the metod Shawn wrote in a loop?

so you want to move all particles ?
or only that one with ID == 1 ?

thought you wanted to move those who was emitted from a certain emitter?
and that several emitters are connected to same partShape?
create several emitters and make em emitt same particleShape?
and then translate the emitters to the different vertexes?

ok, this is what i try to do: I have lot of particles which do need to have the same position as the vertexes of a object (particleID1 = vertex1 and so on), but I only want this relationship in X and Z, not Y
the particles are beeing puched around, so i am trying to fix their postion with using expressions

maybe you should make 2 particle systems, one fully goaled, and the other aligning the x and y to the particles of the goaled one, after dynamics
i mean one particlesystem fully goaled to the object

Ted, look like something in the way i need
so, then particleShape1.pos = particleShape2.pos?
or will is still have to use if (id ==1) {stuff}

no unfortunatelly it is more complex than that
at least concerning getting and setting the position
unfortunatelly it has been a while since i needed such particle-expressions

thanks a lot anyway
just one more question, how can I use the data from a Xform command in a expression?

have you checked the developer mel-area of the manual ?
there are mostly examples

yes, but there are no examples of how to use it in an expression

what are you interested in in particular ?
which flag ?
there are 2 help lines about xform, you just have to supply the right values for the flags

I was thinking of maybe using the ouput from vector $a = `xform -q -ws -t polyVertex[1]` in the pos of the particle. if id =1, pos = $a.x,1,$a.z

but the matrix stuff is more complex
try it, i dont know if that works, sounds feasible

it does not work

xform is only for the transformation node
not for shape-information
like vertex-positions, i checked

you can use it to get vertex pos
wait, that did work...
dont know what i have done wrong, last time i tryed it did not work. Just did it again in order to get the error message

hmm i only read its for the transformation Node and that node is only for the whole object not for components, but if you say so

vector $posVert = `xform -q -ws -t pPlane1.vtx[1]`;
just added it in a loop, works like a dream

dreams can very quickly turn into nightmares =(

maybe...
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