Hi Marcus,
thanks for the reply. It's a very interesting approach!
I've tried it quickly but unfortunately it seems to not work for some
reason.
Here's my code...
import maya.OpenMaya as OM
# read the selection and get the MObject
sel_list = OM.MSelectionList()
OM.MGlobal.getActiveSelectionList(sel_list)
mesh_obj = OM.MObject()
target_obj = OM.MObject()
sel_list.getDependNode(0, mesh_obj)
# get the inMesh plug
dg_fn = OM.MFnDependencyNode(mesh_obj)
plug = dg_fn.findPlug('inMesh')
print plug.isNull()
# get the MObject from the plug
inMesh_obj = plug.asMObject()
# initialize the MFnMesh
fn_mesh = OM.MFnMesh(inMesh_obj)
# get the point array
point_array = OM.MPointArray()
fn_mesh.getPoints(point_array)
print source_point_array.length()
it works ok until the plug.asMObject() command.
I get
# Error: line 1: (kFailure): Unexpected Internal Failure
# Traceback (most recent call last):
# File "<maya console>", line 15, in <module>
# File
"c:\builds\maya-2014-w64\build\Release\runTime\Python\Lib\site-packages\maya\OpenMaya.py",
line 9233, in asMObject
# RuntimeError: (kFailure): Unexpected Internal Failure #
But if I create a cube, select the shape and run the script, then it works
fine.
I don't know where the problem comes from. Maybe it's a Maya bug, or maybe
is just something you can't do with referenced nodes.
If I try to import the object from reference and run the script again, I
still have the same error. I suspect that Maya handles reference node as
special nodes, thus it doesn't really fills in the correct data into the
inMesh attribute.
In my code I also put a call to print plug.isNull() which returns always
False (meaning that the plug is not empty), but still the plug.asMObject()
raise
an Unexpected Internal Failure
I also tried to list the attributes into the 'reference' node (the hidden
node, with the blue diamond icon) but I couldn't find anything interesting.
What do you think?
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