Parent and Unparent in OpenMaya?

[João Victor]

Hi guys, could somebody help me in a doubt?

I am trying to parent B to A, then move A, then unparent B. But at the end of these operations, B can´t return to his original position, he must keeps where A brought him.
How can I do that in the API?

My current code is:

q1 = getMObject("A")

q2 = getMObject("B")

p = new_om.MFnDagNode(q1)

p.addChild(q2)

u = new_om.MDagModifier()

u.reparentNode(q2)   # here B returns to original position, thats the problem

u.doIt()

Thanks a lot!

[tomas mikulak]

Hi,

I am not into API yet, but what if you also parented a locator under A with same position and rotation as B and after unparenting B just set it's transforms according to locator still under A

Bad?

tomas

st 17. 3. 2021 o 21:20 João Victor <joaovi...@gmail.com> napísal(a):

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[João Victor]

thanks a lot for the suggestion Tomas!

but I can´t use CMDS for parenting the new "helper locator",  because I am looking for reduce the time of the loop.. and it have to be made about 30k times in the loop. For this reason I am trying to use the api instead of CMDS. :)

[tomas mikulak]

and if you just use variable to save world matrix of parented B and after unparent just use data. Still guessing, don't know how slow it might be 

st 17. 3. 2021 o 21:32 João Victor <joaovi...@gmail.com> napísal(a):

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[João Victor]

Let me check if I got..
If I:
1) store the matrix of the B ("ORIGINAL_B_pos") (before parenting to A)

2) parent B to A

3) move A (which will bring B to another place, to "NEW_B_pos")
4) unparent B (so B will go back to "ORIGINAL_B_pos" )
5) apply matrix in B (after this 5th step, B will go to "NEW_B_pos" ?)

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