Thanks for this! It’s the other way around, pCube3 goes into pCube2, but it
still works.
Looking closlier, I found that it does something sneaky. It *changes* the
rotate pivot on the destination. Or rather, the rotatePivotTranslate. So
rather than just affecting translate and rotate - which is what I want - it
most likely takes that worldmatrix and decomposes it into its components,
including pivots, and overwrites everything on the destination node. That’s
cool, but that’s cheating. :)
The only thing I want out of the worldmatrix is a rotate/translate for the
destination. That translates and orients the destination to match the
source.
And yes, sadly this needs to happen without cmds.xform, as it’s happening
inside the MPxNode::compute of a C++ plugin.
(Code formatting with “Markdown Here”, sent from my mailbox)
On Wed, 9 Sep 2020 at 11:08, Roy Nieterau <royniete...@gmail.com> wrote:
> Without taking the math in account for now. Are you required to do this
> with the API? :)
>
> Because maya.cmds.xform does take into account pivots, etc. For example
> this works for your setup:
>
> m = cmds.xform("pCube2", query=True, matrix=True, worldSpace=True)
> cmds.xform("pCube3", matrix=m, worldSpace=True)
>
> (What's with the new Google Groups look/layout? How can I get the code
> formatting in here?)
>
> Regarding the actual matrix math. Do note that the xform command
> documentation
> <https://help.autodesk.com/cloudhelp/2020/ENU/Maya-Tech-Docs/CommandsPython/xform.html>at
> the top states the order of transformation that Maya applies. It's quite
> involved but could help you reproduce it exactly.
>
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