[Maya-Python] one transform node with more shape mode

[miarmy]

hi! first, i write this code:

MSelectionList selectionList;
MGlobal::getActiveSelectionList(selectionList);
//first selection :
MDagPath dag_path;
MItSelectionList kDagNodeSelectionList(selectionList, MFn::kDagNode);

kDagNodeSelectionList.getDagPath(dag_path);

MObject obj;
//get shape :
dag_path.extendToShape();
obj = dag_path.node();
MFnDependencyNode meshObj(obj);

in transform node with one shape or mesh node, this code is true and
it Give us the only mesh, But if the transform node had more shape node,
How to find individual shapes?

[Justin Israel]

Looking at the API docs, extendToShape() says it will fail if the transform
has more than one immediate shape:
http://help.autodesk.com/cloudhelp/2018/ENU/Maya-SDK/cpp_ref/class_m_dag_path.html#a658d9664035ff84ffefa217c0e45cc88

There looks to be 2 more calls that might suit your needs:

MStatus extendToShapeDirectlyBelow( unsigned int index )
MStatus numberOfShapesDirectlyBelow( unsigned int & num ) const

So you can check if the transform node has more than one shape, and get the
exact shape index you are after.

- Justin

Post by miarmy
MSelectionList selectionList;
MGlobal::getActiveSelectionList(selectionList);
MDagPath dag_path;
MItSelectionList kDagNodeSelectionList(selectionList, MFn::kDagNode);
kDagNodeSelectionList.getDagPath(dag_path);
MObject obj;
dag_path.extendToShape();
obj = dag_path.node();
MFnDependencyNode meshObj(obj);
in transform node with one shape or mesh node, this code is true and
it Give us the only mesh, But if the transform node had more shape node,
How to find individual shapes?
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