[Maya-Python] Maya command and complex argument

[Rémi Deletrain]

Hi everybody,

Is it possible to give to Maya complex command arguments like a
MMatrixArray?
I am looking to make the equivalent of a bake in maya but without having
the source. I only have matrix data in a file.
I have a solution that works in python but it is slow given the number of
iteration.

[Michael Boon]

I don't understand. Do you mean launch Maya from the command line, with a
lot of data as arguments to the call?
Command line calls are limited to 32k characters, I think, but you're still
writing and reading all your matrix data as text, so I wouldn't expect it
to be any faster.
Reading the data from a file using Python would be the best way to do it, I
expect. If you're using the same data a lot of times you could read it once
from a text file, then Pickle it into a binary file (or save it into a Maya
binary), which would be a lot faster to read.

Post by Rémi Deletrain
Hi everybody,
Is it possible to give to Maya complex command arguments like a
MMatrixArray?
I am looking to make the equivalent of a bake in maya but without having
the source. I only have matrix data in a file.
I have a solution that works in python but it is slow given the number of
iteration.

[Marcus Ottosson]

Now I also don't understand.

I thought he was referring to the Maya command *plug-in*, MPxCommand
<http://help.autodesk.com/view/MAYAUL/2017/ENU/?guid=__py_ref_class_open_maya_1_1_m_px_command_html>,
and the argument it can get, MArgList
<http://help.autodesk.com/view/MAYAUL/2017/ENU/?guid=__py_ref_class_open_maya_1_1_m_arg_list_html>
which
I think is limited to simple types like strings and floats.

Post by Michael Boon
I don't understand. Do you mean launch Maya from the command line, with a
lot of data as arguments to the call?
Command line calls are limited to 32k characters, I think, but you're
still writing and reading all your matrix data as text, so I wouldn't
expect it to be any faster.
Reading the data from a file using Python would be the best way to do it,
I expect. If you're using the same data a lot of times you could read it
once from a text file, then Pickle it into a binary file (or save it into a
Maya binary), which would be a lot faster to read.

Post by Rémi Deletrain
Hi everybody,
Is it possible to give to Maya complex command arguments like a
MMatrixArray?
I am looking to make the equivalent of a bake in maya but without having
the source. I only have matrix data in a file.
I have a solution that works in python but it is slow given the number of
iteration.

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[Rémi Deletrain]

Thank you for your answers.

Yes I spoke to Maya MPxCommand.
I wanted to know if it was possible to return arguments more complex than
int, bool, float and string.
Marcus a répondu à ma question.

for speed my process I must to change my workflow I think for works with
MPxCommand.

[Michael Boon]

Now it makes sense to me :)
Sorry I don't have any answers though.

Post by Rémi Deletrain
Thank you for your answers.
Yes I spoke to Maya MPxCommand.
I wanted to know if it was possible to return arguments more complex than
int, bool, float and string.
Marcus a répondu à ma question.
for speed my process I must to change my workflow I think for works with
MPxCommand.

[Rémi Deletrain]

Too bad I'll do otherwise then. :)