MObject createShadingGroup(const MString& iName)
{
MStatus status;
MFnSet fnSet;
MSelectionList selList;
MObject shadingGroup = fnSet.create(selList,
MFnSet::kRenderableOnly,
&status);
if (status != MS::kSuccess)
{
MString theError("Could not create shading engine: ");
theError += iName;
MGlobal::displayError(theError);
return shadingGroup;
}
fnSet.setName(iName);
return shadingGroup;
}
MStatus AlembicAssignFacesetCommand::doIt(const MArgList& args)
{
ESS_PROFILE_SCOPE("AlembicAssignFacesetCommand::doIt");
MStatus status;
MArgParser argData(syntax(), args, &status);
if (argData.isFlagSet("help"))
{
MGlobal::displayInfo("[ExocortexAlembic]: ExocortexAlembic_assignFaceset command:");
MGlobal::displayInfo(" -a : attribute of the shape with the faceset indices");
MGlobal::displayInfo(" -m : mesh to assign the faceset on");
//MGlobal::displayInfo(" -s : set to assign the faceset on");
return MS::kSuccess;
}
/*
if (!argData.isFlagSet("xset"))
{
MGlobal::displayError("[ExocortexAlembic]: ExocortexAlembic_assignFaceSets command missing set");
return MS::kFailure;
}
//*/
if (!argData.isFlagSet("attribute"))
{
MGlobal::displayError("[ExocortexAlembic]: ExocortexAlembic_assignFaceSets command missing attribute");
return MS::kFailure;
}
if (!argData.isFlagSet("mesh"))
{
MGlobal::displayError("[ExocortexAlembic]: ExocortexAlembic_assignFaceSets command missing mesh");
return MS::kFailure;
}
// load the mesh!
MString argstr;
MSelectionList sl;
argstr = argData.flagArgumentString("mesh", 0);
sl.add(argstr);
MDagPath dagp;
sl.getDagPath(0, dagp);
MFnMesh fnMesh(dagp, &status);
if (status != MS::kSuccess)
{
MGlobal::displayError("invalid mesh shape");
return MS::kFailure;
}
// check if the attribute is valid
argstr = argData.flagArgumentString("attribute", 0);
MObject attr = fnMesh.attribute(argstr);
MFnAttribute mfnAttr(attr);
MPlug plug = fnMesh.findPlug(attr, true);
if (!mfnAttr.isReadable() || plug.isNull())
{
MGlobal::displayError("invalid attribute");
return MS::kFailure;
}
MFnIntArrayData arr(plug.asMObject(), &status); // read the attribute
if (status != MS::kSuccess || arr.length() == 0)
{
MGlobal::displayError("invalid attribute");
return MS::kFailure;
}
{
MObject oMesh = fnMesh.object();
MSelectionList faces;
int pol_idx = 0, facesetIdx = 0;
for (MItMeshPolygon iter(oMesh); !iter.isDone(); iter.next(), ++pol_idx)
{
if (pol_idx == arr[facesetIdx])
{
faces.add(iter.currentItem());
++facesetIdx;
if (facesetIdx == arr.length())
break;
}
}
MFnSet fnSet;
MObject oSet = fnSet.create(sl, MFnSet::kFacetsOnly, &status);
if (!status)
{
MGlobal::displayError("invalid set: " + status.errorString());
return MS::kFailure;
}
setResult(fnSet.name());
}
return MS::kSuccess;
}