Issue 290 in alembic: "-sl" option in Maya AbcExport does nothing

[ale...@googlecode.com]

Status: New
Owner: ----
Labels: Type-Defect FoundBy-Community

New issue 290 by syoyofuj...@gmail.com: "-sl" option in Maya AbcExport does
nothing
http://code.google.com/p/alembic/issues/detail?id=290

What steps will reproduce the problem?

Use Alembic 1.1(from source)
AbcExport -j "-sl -file /path/to/file.abc"


Please provide any additional information below.

"-sl" option(which do exporting only selected nodes) does nothing in
AbcExport.cpp ...

else if (jobArgs.useSelectionList)
{
MSelectionList activeList;
MGlobal::getActiveSelectionList(activeList);
if (activeList.length() == 0)
{
MString errorMsg =
"-selection specified but nothing is actively
selected.";
MGlobal::displayError(errorMsg);
return MS::kFailure;
}
}

[ale...@googlecode.com]

Comment #1 on issue 290 by miller.lucas: "-sl" option in Maya AbcExport
does nothing
http://code.google.com/p/alembic/issues/detail?id=290

Did you have anything selected in your scene?

I just tested this and it's exporting what I have selected.

[ale...@googlecode.com]

Updates:
Status: Done

Comment #2 on issue 290 by miller.lucas: "-sl" option in Maya AbcExport
does nothing
http://code.google.com/p/alembic/issues/detail?id=290

Also the code you quoted in AbcExport.cpp is just a quick check for
correctness.

The logic that does the real thing is here:
http://code.google.com/p/alembic/source/browse/maya/AbcExport/AbcWriteJob.cpp?name=1_01_00#260

[ale...@googlecode.com]

Comment #3 on issue 290 by syoyofuj...@gmail.com: "-sl" option in Maya

AbcExport does nothing
http://code.google.com/p/alembic/issues/detail?id=290

Yes > Did you have anything selected in your scene?

1) Create a simple plane geometry & select it in Maya
2) AbcExport -j "-sl -file /path/to/file.abc";

Then, what I actually get is,

$ ls -la file.abc
-rw-r--r-- 1 syoyo staff 4487 Sep 7 02:37 geometry.abc

// Alembic file info:
# of children: 1
ScalarProperty name=statistics:interpretation=:datatype=string:numsamps=1
ScalarProperty
name=.childBnds:interpretation=box:datatype=float64_t[6]:numsamps=1
Xform:
trans
Object: name = /pPlane1
CompoundProperty name=.xform:schema=AbcGeom_Xform_v3
ScalarProperty name=.ops:interpretation=:datatype=uint8_t:numsamps=1
ArrayProperty
name=.animChans:interpretation=:datatype=uint32_t:numsamps=1
ScalarProperty
name=isNotConstantIdentity:interpretation=:datatype=bool_t:numsamps=1
ScalarProperty name=.inherits:interpretation=:datatype=bool_t:numsamps=1
ScalarProperty
name=.vals:interpretation=:datatype=float64_t[3]:numsamps=1
# of samples: 0
min time : 0
max time : 0

There are node info, but lacks any primitive parameters(e.g. P, N)

3) AbcExport -j "-root |pPlane1 -file /path/to/file.abc";

When I specify a geometry explicitly, which gives,

$ ls -la file.abc
-rw-r--r-- 1 syoyo staff 9686 Sep 7 02:32 file.abc

// Alembic file info:
# of children: 1
ScalarProperty name=statistics:interpretation=:datatype=string:numsamps=1
ScalarProperty
name=.childBnds:interpretation=box:datatype=float64_t[6]:numsamps=1
Xform:
trans
Object: name = /pPlane1
CompoundProperty name=.xform:schema=AbcGeom_Xform_v3
ScalarProperty name=.ops:interpretation=:datatype=uint8_t:numsamps=1
ArrayProperty
name=.animChans:interpretation=:datatype=uint32_t:numsamps=1
ScalarProperty
name=isNotConstantIdentity:interpretation=:datatype=bool_t:numsamps=1
ScalarProperty name=.inherits:interpretation=:datatype=bool_t:numsamps=1
ScalarProperty
name=.vals:interpretation=:datatype=float64_t[3]:numsamps=1
PolyMesh:
# of samples = 1
# of positions = 4
# of counts = 1
Object: name = /pPlane1/pPlaneShape1
CompoundProperty name=.geom:schema=AbcGeom_PolyMesh_v1
ArrayProperty
name=.faceCounts:interpretation=:datatype=int32_t:numsamps=1
ArrayProperty
name=.faceIndices:interpretation=:datatype=int32_t:numsamps=1
ArrayProperty
name=P:interpretation=point:datatype=float32_t[3]:numsamps=1
ArrayProperty
name=N:interpretation=normal:datatype=float32_t[3]:numsamps=1
ScalarProperty
name=.selfBnds:interpretation=box:datatype=float64_t[6]:numsamps=1
# of samples: 1
min time : 0
max time : 0



As far as I know, I didn't get this strange behavior in Alembic 1.0.4.

FYI, I'm using Maya 2012 x64 SP on Mac SnowLeopard.

[ale...@googlecode.com]

Comment #4 on issue 290 by syoyofuj...@gmail.com: "-sl" option in Maya

AbcExport does nothing
http://code.google.com/p/alembic/issues/detail?id=290

I mean "-sl" option works correctly > As far as I know, I didn't get this

[ale...@googlecode.com]

Comment #5 on issue 290 by miller.lucas: "-sl" option in Maya AbcExport
does nothing
http://code.google.com/p/alembic/issues/detail?id=290

When you create the plane (via polyPlane for example), only the parent
transform is actually selected by default.

[ale...@googlecode.com]

Comment #6 on issue 290 by syoyofuj...@gmail.com: "-sl" option in Maya

AbcExport does nothing
http://code.google.com/p/alembic/issues/detail?id=290

So did you changed the behavior of "-sl" in ver 1.1 from 1.0.4? I think
only exporting transformation node is meaning less in most case.

[ale...@googlecode.com]

Comment #7 on issue 290 by miller.lucas: "-sl" option in Maya AbcExport
does nothing
http://code.google.com/p/alembic/issues/detail?id=290

Yes, there was this change:
http://code.google.com/r/millerlucas-dev/source/detail?r=157df2c32ff09148af5311672f791d1e151ea9d5

Exporting only transforms is a valid workflow.

If you find that using -selection is deficient because you do not want to
select the appropriate meshes, you can use -root to write out all nodes at
and below the specified node.

[ale...@googlecode.com]

Comment #8 on issue 290 by syoyofuj...@gmail.com: "-sl" option in Maya

AbcExport does nothing
http://code.google.com/p/alembic/issues/detail?id=290

Hmm...

So what is best way to export multple selection nodes including its child
shape nodes(selection done on Maya viewport will select xfrom node) as easy
as previous "-sl" option?

[ale...@googlecode.com]

Comment #9 on issue 290 by miller.lucas: "-sl" option in Maya AbcExport
does nothing
http://code.google.com/p/alembic/issues/detail?id=290

You can select things in the Maya viewport and press the down key, that
should select the shapes in most cases.