コード例 #1
0
MObject lrutils::createJointFromLocation(MVectorArray location, MString prefix, unsigned int num, MObject parent) {
    MStatus status = MS::kFailure;
    MObject jointObj;

    //make joint object
    MDagModifier dagMod;
    jointObj = dagMod.createNode( "joint", MObject::kNullObj, &status );
    MyCheckStatus(status, "MDagModifier.createNode() failed");
    dagMod.doIt();
    //set position
    lrutils::setLocation(jointObj, location, MFnTransform::MFnTransform(), true, false, false);
    //set name        
    MString jointName = prefix + "_Skel" + boost::lexical_cast<string>(num).c_str() + "_JNT";
    dagMod.renameNode(jointObj, jointName);
    dagMod.doIt();
    MFnTransform jointFn(jointObj);
    
    //parent the joint to its parent, if not null
    if(parent != MObject::kNullObj) {
        MFnTransform parentFn(parent);
        MGlobal::executeCommand("parent " + jointFn.fullPathName() + " " + parentFn.fullPathName() + ";");
    }

    return jointObj;
}
コード例 #2
0
//-----------------------------------------------------------------------------
// Adds a color set to the input history of the passed mesh
//-----------------------------------------------------------------------------
MObject ValveMaya::AddColorSetToMesh(
	const MString &colorSetName,
	const MDagPath &mDagPath,
	MDagModifier &mDagModifier )
{
	if ( !mDagPath.hasFn( MFn::kMesh ) )
		return MObject::kNullObj;

	MFnMesh meshFn( mDagPath );
	MString uniqueColorSetName;

	{
		MStringArray colorSetNames;
		meshFn.getColorSetNames( colorSetNames );
		const uint nColorSets( colorSetNames.length() );
		for ( int i( 0 ); uniqueColorSetName.length() == 0; ++i )
		{
			uniqueColorSetName = colorSetName;
			if ( i > 0 )
			{
				uniqueColorSetName += i;
			}
			for ( uint j( 0U ); j != nColorSets; ++j )
			{
				if ( uniqueColorSetName == colorSetNames[ j ] )
				{
					uniqueColorSetName.clear();
					break;
				}
			}
		}
	}

	// Create a 'createColorSet' node
	MObject ccsObj( mDagModifier.MDGModifier::createNode( "createColorSet" ) );
	mDagModifier.doIt();
	const MFnDependencyNode ccsFn( ccsObj );
	MPlug csnP( ccsFn.findPlug( "colorSetName" ) );
	csnP.setValue( uniqueColorSetName );

	// Insert it in the history of the mesh
	MPlug inMeshP( meshFn.findPlug( "inMesh" ) );
	MPlugArray mPlugArray;
	if ( inMeshP.connectedTo( mPlugArray, true, false ) && mPlugArray.length() )
	{
		mDagModifier.disconnect( mPlugArray[ 0 ], inMeshP );
		mDagModifier.connect( mPlugArray[ 0 ], ccsFn.findPlug( "inputGeometry" ) );
	}

	mDagModifier.connect( ccsFn.findPlug( "outputGeometry" ), inMeshP );
	mDagModifier.doIt();

	return ccsObj;
}
コード例 #3
0
ファイル: translatorUtil.cpp プロジェクト: 400dama/USD
/* static */
bool
PxrUsdMayaTranslatorUtil::CreateNode(
        const MString& nodeName,
        const MString& nodeTypeName,
        MObject& parentNode,
        MStatus* status,
        MObject* mayaNodeObj)
{
    // XXX:
    // Using MFnDagNode::create() results in nodes that are not properly
    // registered with parent scene assemblies. For now, just massaging the
    // transform code accordingly so that child scene assemblies properly post
    // their edits to their parents-- if this is indeed the best pattern for
    // this, all Maya*Reader node creation needs to be adjusted accordingly (for
    // much less trivial cases like MFnMesh).
    MDagModifier dagMod;
    *mayaNodeObj = dagMod.createNode(nodeTypeName, parentNode, status);
    CHECK_MSTATUS_AND_RETURN(*status, false);
    *status = dagMod.renameNode(*mayaNodeObj, nodeName);
    CHECK_MSTATUS_AND_RETURN(*status, false);
    *status = dagMod.doIt();
    CHECK_MSTATUS_AND_RETURN(*status, false);

    return TF_VERIFY(not mayaNodeObj->isNull());
}
コード例 #4
0
MStatus lrutils::makeHomeNull(MObject obj, MFnTransform& transformFn, MObject& groupObj) {
    MStatus status = MS::kFailure;
    
    status = transformFn.setObject(obj);
    MyCheckStatusReturn(status, "invalid MObject provided for MFnTransform.setObject()");

    if( status == MS::kSuccess ) {
        MDagModifier dagMod;
        groupObj = dagMod.createNode( "transform", MObject::kNullObj, &status );
        MyCheckStatusReturn(status, "MDagModifier.createNode() failed");
        dagMod.doIt();

        MFnTransform groupFn;
        groupFn.setObject(groupObj);
        groupFn.set(transformFn.transformation());
        groupFn.addChild(obj);
        
        MString groupName = transformFn.name();
        groupName = groupName.substring(0, groupName.numChars() - 4);
        groupName += "GRP";
        groupFn.setName(groupName);
        
    }

    return status;
}
コード例 #5
0
ファイル: blendshape.cpp プロジェクト: MrLobo/El-Rayo-de-Zeus
	// Break connections to this blendshape
	void BlendShape::breakConnections()
	{
		MStatus stat;
		MDagModifier dagModifier;
		// Clear the stored connections
		m_weightConnections.clear();
		// Save node connections and break them
		MPlug weightsPlug = m_pBlendShapeFn->findPlug("weight",true);
		for (int i=0; i<weightsPlug.evaluateNumElements(); i++)
		{
			MPlug wPlug = weightsPlug.elementByPhysicalIndex(i);
			MPlugArray srcConnections;
			MPlugArray dstConnections;
			wPlug.connectedTo(srcConnections,false,true);
			wPlug.connectedTo(dstConnections,true,false);
			weightConnections wcon;
			for (int j=0; j<srcConnections.length(); j++)
			{
				wcon.srcConnections.append(srcConnections[j]);
				dagModifier.disconnect(wPlug,srcConnections[j]);
				dagModifier.doIt();
			}
			for (int j=0; j<dstConnections.length(); j++)
			{
				wcon.dstConnections.append(dstConnections[j]);
				stat = dagModifier.disconnect(dstConnections[j],wPlug);
				if (MS::kSuccess != stat)
				{
					std::cout << "Error trying to disconnect plug " << wPlug.name().asChar() << " and plug " << dstConnections[j].name().asChar() << "\n";
					std::cout << stat.errorString().asChar() << "\n";
					std::cout.flush();
				}
				stat = dagModifier.doIt();
				if (MS::kSuccess != stat)
				{
					std::cout << "Error trying to disconnect plug " << wPlug.name().asChar() << " and plug " << dstConnections[j].name().asChar() << "\n";
					std::cout << stat.errorString().asChar() << "\n";
					std::cout.flush();
				}
			}
			m_weightConnections.push_back(wcon);
		}
	}
コード例 #6
0
ファイル: blendshape.cpp プロジェクト: MrLobo/El-Rayo-de-Zeus
	// Restore connections on this blendshape
	void BlendShape::restoreConnections()
	{
		MDagModifier dagModifier;
		// Recreate stored connections on the weight attributes
		MPlug weightsPlug = m_pBlendShapeFn->findPlug("weight",true);
		for (int i=0; i<weightsPlug.evaluateNumElements(); i++)
		{
			MPlug wPlug = weightsPlug.elementByPhysicalIndex(i);
			weightConnections& wcon = m_weightConnections[i];
			for (int j=0; j<wcon.srcConnections.length(); j++)
			{
				dagModifier.connect(wPlug,wcon.srcConnections[j]);
				dagModifier.doIt();
			}
			for (int j=0; j<wcon.dstConnections.length(); j++)
			{
				dagModifier.connect(wcon.dstConnections[j],wPlug);
				dagModifier.doIt();
			}
		}
	}
コード例 #7
0
/* static */
bool
UsdMayaTranslatorCamera::Read(
        const UsdGeomCamera& usdCamera,
        MObject parentNode,
        const UsdMayaPrimReaderArgs& args,
        UsdMayaPrimReaderContext* context)
{
    if (!usdCamera) {
        return false;
    }

    const UsdPrim& prim = usdCamera.GetPrim();
    const SdfPath primPath = prim.GetPath();

    MStatus status;

    // Create the transform node for the camera.
    MObject transformObj;
    if (!UsdMayaTranslatorUtil::CreateTransformNode(prim,
                                                       parentNode,
                                                       args,
                                                       context,
                                                       &status,
                                                       &transformObj)) {
        return false;
    }

    // Create the camera shape node.
    MDagModifier dagMod;
    MObject cameraObj = dagMod.createNode(_tokens->MayaCameraTypeName.GetText(),
                                          transformObj,
                                          &status);
    CHECK_MSTATUS_AND_RETURN(status, false);
    status = dagMod.doIt();
    CHECK_MSTATUS_AND_RETURN(status, false);
    TF_VERIFY(!cameraObj.isNull());

    MFnCamera cameraFn(cameraObj, &status);
    CHECK_MSTATUS_AND_RETURN(status, false);
    const std::string cameraShapeName = prim.GetName().GetString() +
        _tokens->MayaCameraShapeNameSuffix.GetString();
    cameraFn.setName(cameraShapeName.c_str(), &status);
    CHECK_MSTATUS_AND_RETURN(status, false);
    if (context) {
        const SdfPath shapePrimPath = primPath.AppendChild(TfToken(cameraShapeName));
        context->RegisterNewMayaNode(shapePrimPath.GetString(), cameraObj);
    }

    return _ReadToCamera(usdCamera, cameraFn, args, context);
}
コード例 #8
0
MStatus lrutils::makeGroup(MObject & obj, MString name) {
    MStatus status = MS::kFailure;

    MDagModifier dagMod;
    MObject groupObj = dagMod.createNode( "transform", MObject::kNullObj, &status );
    MyCheckStatusReturn(status, "MDagModifier.createNode() failed");
    dagMod.doIt();

    MFnTransform groupFn;
    groupFn.setObject(groupObj);
    MString groupName = name;
    groupName += "_GRP";
    groupFn.setName(groupName);

    obj = groupObj;

    return status;
}
コード例 #9
0
ファイル: MVGMesh.cpp プロジェクト: jonntd/mayaMVG
void MVGMesh::setIsActive(const bool isActive) const
{
    MStatus status;

    // Check is flag exists
    MFnMesh fn(_dagpath);
    MPlug mvgPlug = fn.findPlug(_MVG, false, &status);
    if(!status && !isActive)
        return;
    if(!status && isActive)
    {
        // Create MayaMVG attribute
        MDagModifier dagModifier;
        MFnNumericAttribute nAttr;
        MObject mvgAttr = nAttr.create(_MVG, "mvg", MFnNumericData::kBoolean);
        status = dagModifier.addAttribute(_object, mvgAttr);
        CHECK(status)
        dagModifier.doIt();
        mvgPlug = fn.findPlug(_MVG, false, &status);
    }
    status = mvgPlug.setValue(isActive);
    CHECK(status)
    if(isActive)
    {
        status = MGlobal::executePythonCommand("from mayaMVG import scale");
        CHECK(status)
        MString cmd;
        // Retrieve transform node
        cmd.format("scale.getParent(\"^1s\")", _dagpath.fullPathName());
        MString transform;
        status = MGlobal::executePythonCommand(cmd, transform);
        // Freeze transform mesh
        cmd.format("makeIdentity -apply true \"^1s\"", transform);
        status = MGlobal::executeCommand(cmd);
        CHECK(status)
        // Lock node
        cmd.format("scale.lockNode(\"^1s\", True)", transform);
        status = MGlobal::executePythonCommand(cmd);
        CHECK(status)
    }
    else
    {
コード例 #10
0
ファイル: MeshGitCmd.cpp プロジェクト: legarlin/MeshGit
void MeshGitCmd::connectNodes(MString nodeName, MString locatorName){
	MGlobal::displayInfo("Connecting " + nodeName + " and " + locatorName);
	MStatus status;

	//Get Node Object
	MSelectionList nodeList;
	status = nodeList.add(nodeName);
	MObject nodeObject;
	status = nodeList.getDependNode(0, nodeObject);
	reportError(status);

	//Get Viz Object
	MSelectionList vizList;
	status = vizList.add(locatorName);
	MObject vizObject;
	status = vizList.getDependNode(0, vizObject);
	reportError(status);

	//Create Node Fn
	MeshGitFn mgFn;
	status = mgFn.setObject(nodeObject);
	reportError(status);
	
	//Create viz fn
	MFnDependencyNode vizFn(vizObject, &status);

	//Get the node plug
	MPlug nodePlug = mgFn.findPlug("message", true, &status);
	reportError(status);

	//Get the viz plug 
	MPlug vizPlug = vizFn.findPlug(MeshGitLocatorNode::meshGitNodeConnection, true,
            &status);

	//Connect the plugs 
	
	MDagModifier modifier;
	status = modifier.connect(nodePlug,vizPlug);
	reportError(status);
	status = modifier.doIt();

}
コード例 #11
0
//------------------------------------------------------------------------------
//
bool CacheRepresentation::activate()
{
   AssemblyDefinition* const assembly =
      dynamic_cast< AssemblyDefinition* >( getAssembly() );
   if ( assembly == 0 ) {
      return false;
   }

   // Create a gpuCache node, and parent it to our container.
   MDagModifier dagMod;   
   MStatus status;
   MObject cacheObj = dagMod.createNode(
      MString("gpuCache"), assembly->thisMObject(), &status);

   if (status != MStatus::kSuccess) {
      int	isLoaded = false;
      // Validate that the gpuCache plugin is loaded.
      MGlobal::executeCommand( "pluginInfo -query -loaded gpuCache", isLoaded );
	  if(!isLoaded){	     
	     MString errorString = MStringResource::getString(rCreateGPUCacheNodeError, status);	     
	     MGlobal::displayError(errorString);	    
      }
      return false;
   }
   status = dagMod.doIt();
   if (status != MStatus::kSuccess) {
      return false;
   }
      
   // Set the cache attribute to point to our Alembic file.
   MFnDependencyNode cache(cacheObj);
   MPlug fileName = cache.findPlug(MString("cacheFileName"), true, &status);
   if (status != MStatus::kSuccess) {
      return false;
   }
   fileName.setValue(assembly->getRepData(getName()));

   return status == MStatus::kSuccess;
}
コード例 #12
0
//-----------------------------------------------------------------------------
// Creates a vstAttachment Locator
//-----------------------------------------------------------------------------
MStatus CVstAttachmentCmd::DoCreate()
{
	MDagModifier *mDagModifier( new MDagModifier );

	if ( !mDagModifier )
	{
		merr << "Can't create new MDagModifier" << std::endl;
		return MS::kFailure;
	}

	MString optName( "vstAttachment" );
	if ( m_mArgDatabase->isFlagSet( kOptName ) )
	{
		m_mArgDatabase->getFlagArgument( kOptName, 0, optName );
	}

	// Create the helper bone locator's transform
	MObject xObj = mDagModifier->createNode( "transform" );
	mDagModifier->doIt();

	if ( xObj.isNull() )
	{
		merr << "Can't create new transform node" << std::endl;
		return MS::kFailure;
	}

	// name the shape & the transform the same thing
	mDagModifier->renameNode( xObj, optName );
	mDagModifier->doIt();

	MObject vstAttachmentObj = mDagModifier->createNode( "vstAttachment", xObj );

	if ( vstAttachmentObj.isNull() )
	{
		merr << "Can't create new vstAttachment node" << std::endl;
		mDagModifier->undoIt();
		return MS::kFailure;
	}

	// name the shape & the transform the same thing
	mDagModifier->renameNode( vstAttachmentObj, MFnDependencyNode( xObj ).name() );
	mDagModifier->doIt();

	m_undoable = true;
	m_mDagModifier = mDagModifier;

	if ( m_mArgDatabase->isFlagSet( kOptParent ) )
	{
		MSelectionList mSelectionList;
		m_mArgDatabase->getObjects( mSelectionList );
		for ( MItSelectionList sIt( mSelectionList, MFn::kDagNode ); !sIt.isDone(); sIt.next() )
		{
			MDagPath mDagPath;
			if ( sIt.getDagPath( mDagPath ) )
			{
				m_mDagModifier->reparentNode( xObj, mDagPath.node() );
				m_mDagModifier->doIt();
				break;
			}
		}
	}

	// Save the current selection just in case we want to undo stuff
	MGlobal::getActiveSelectionList( m_mSelectionList );

	MDagPath xDagPath;
	MDagPath::getAPathTo( xObj, xDagPath );
	MGlobal::select( xDagPath, MObject::kNullObj, MGlobal::kReplaceList );
	setResult( xDagPath.partialPathName() );

	return MS::kSuccess;
}
コード例 #13
0
MStatus CVstAimCmd::redoIt()
{
	MStatus mStatus;

	if ( !mStatus )
	{
		setResult( MString( "Cannot parse command line" ) + mStatus.errorString() );
		return MS::kFailure;
	}

	if ( m_mArgDatabase->isFlagSet( kHelp ) )
	{
		PrintHelp();
	}
	else
	{
		// See if there are two object specified

		MDagPath mDagPath;
		MSelectionList optSelectionList;

		// Validate specified items to whole dag nodes
		{
			MSelectionList tmpSelectionList;
			m_mArgDatabase->getObjects( tmpSelectionList );
			for ( MItSelectionList sIt( tmpSelectionList, MFn::kDagNode ); !sIt.isDone(); sIt.next() )
			{
				if ( sIt.getDagPath( mDagPath ) )
				{
					optSelectionList.add( mDagPath, MObject::kNullObj, true );
				}
			}
		}

		if ( m_mArgDatabase->isFlagSet( "create" ) || optSelectionList.length() >= 2 && m_mArgDatabase->numberOfFlagsUsed() == 0 )
		{
			// Error if there aren't at least two
			if ( optSelectionList.length() < 2 )
			{
				displayError( GetName() + " needs at least two objects specified or selected when -create is used" );
				return MS::kFailure;
			}

			// Get name command line arg
			MString optName;
			if ( m_mArgDatabase->isFlagSet( "name" ) )
			{
				m_mArgDatabase->getFlagArgument( "name", 0, optName );
			}

			m_undoable = true;
			m_mDagModifier = new MDagModifier;

			MObject vstAimObj( m_mDagModifier->MDGModifier::createNode( GetName() ) );
			if ( m_mDagModifier->doIt() != MS::kSuccess )
			{
				displayError( MString( "Couldn't create " ) + GetName() + " node" );
				m_mDagModifier->undoIt();
				delete m_mDagModifier;
				m_mDagModifier = NULL;
				m_undoable = false;

				return MS::kFailure;
			}

			m_mDagModifier->renameNode( vstAimObj, optName.length() ? optName : GetName() );
			if ( m_mDagModifier->doIt() != MS::kSuccess )
			{
				if ( optName.length() )
				{
					displayWarning( MString( "Couldn't rename newly created vstNode \"" ) + optName + "\"" );
				}
			}

			// Set options on the newly create vstAim node

			MFnDependencyNode vstAimFn( vstAimObj );

			MPlug sP;
			MPlug dP;

			if ( m_mArgDatabase->isFlagSet( kAim ) )
			{
				MVector aim;
				m_mArgDatabase->getFlagArgument( kAim, 0, aim.x );
				m_mArgDatabase->getFlagArgument( kAim, 1, aim.y );
				m_mArgDatabase->getFlagArgument( kAim, 2, aim.z );

				sP = vstAimFn.findPlug( "aimX" );
				sP.setValue( aim.x );

				sP = vstAimFn.findPlug( "aimY" );
				sP.setValue( aim.y );

				sP = vstAimFn.findPlug( "aimZ" );
				sP.setValue( aim.z );
			}

			if ( m_mArgDatabase->isFlagSet( kUp ) )
			{
				MVector up;
				m_mArgDatabase->getFlagArgument( kUp, 0, up.x );
				m_mArgDatabase->getFlagArgument( kUp, 1, up.y );
				m_mArgDatabase->getFlagArgument( kUp, 2, up.z );

				sP = vstAimFn.findPlug( "upX" );
				sP.setValue( up.x );

				sP = vstAimFn.findPlug( "upY" );
				sP.setValue( up.y );

				sP = vstAimFn.findPlug( "upZ" );
				sP.setValue( up.z );
			}

			// Now connect up the newly created vstAim node

			MDagPath toAim;
			optSelectionList.getDagPath( 1, toAim );
			const MFnDagNode toAimFn( toAim );

			if ( toAim.hasFn( MFn::kJoint ) )
			{
				MPlug joP( toAimFn.findPlug( "jointOrient" ) );
				if ( !joP.isNull() )
				{
					MAngle jox, joy, joz;
					joP.child( 0 ).getValue( jox );
					joP.child( 1 ).getValue( joy );
					joP.child( 2 ).getValue( joz );
					if ( abs( jox.value() ) > FLT_EPSILON || abs( joy.value() ) > FLT_EPSILON || abs( joz.value() ) > FLT_EPSILON )
					{
						mwarn << "Joint orient on node being constrained is non-zero ( " << jox.asDegrees() << " " << joy.asDegrees() << " " << joz.asDegrees() << " ), setting to 0" << std::endl;
						joP.child( 0 ).setValue( MAngle( 0.0 ) );
						joP.child( 1 ).setValue( MAngle( 0.0 ) );
						joP.child( 2 ).setValue( MAngle( 0.0 ) );
					}
				}
			}

			if ( toAim.hasFn( MFn::kTransform ) )
			{
				MPlug mP( toAimFn.findPlug( "rotateAxis" ) );
				if ( !mP.isNull() )
				{
					MAngle rx, ry, rz;
					mP.child( 0 ).getValue( rx );
					mP.child( 1 ).getValue( ry );
					mP.child( 2 ).getValue( rz );
					if ( abs( rx.value() ) > FLT_EPSILON || abs( ry.value() ) > FLT_EPSILON || abs( rz.value() ) > FLT_EPSILON )
					{
						mwarn << "Rotate Axis on node being constrained is non-zero ( " << rx.asDegrees() << " " << ry.asDegrees() << " " << rz.asDegrees() << " ), setting to 0" << std::endl;
						mP.child( 0 ).setValue( MAngle( 0.0 ) );
						mP.child( 1 ).setValue( MAngle( 0.0 ) );
						mP.child( 2 ).setValue( MAngle( 0.0 ) );
					}
				}
			}

			MDagPath aimAt;
			optSelectionList.getDagPath( 0, aimAt );
			const MFnDagNode aimAtFn( aimAt );

			// toAim.rotateOrder -> vstAim.rotateOrder
			sP = toAimFn.findPlug( "rotateOrder" );
			dP = vstAimFn.findPlug( "rotateOrder" );
			m_mDagModifier->connect( sP, dP );

			// toAim.translate -> vstAim.translate
			sP = toAimFn.findPlug( "translate" );
			dP = vstAimFn.findPlug( "translate" );
			m_mDagModifier->connect( sP, dP );

			// toAim.parentMatrix[ instance ] -> vstAim.parentSpace
			sP = toAimFn.findPlug( "parentMatrix" );
			sP = sP.elementByLogicalIndex( toAim.instanceNumber() );
			dP = vstAimFn.findPlug( "parentSpace" );
			m_mDagModifier->connect( sP, dP );

			// aimAt.worldMatrix[ instance ] -> vstAim.aimSpace
			sP = aimAtFn.findPlug( "worldMatrix" );
			sP = sP.elementByLogicalIndex( aimAt.instanceNumber() );
			dP = vstAimFn.findPlug( "aimSpace" );
			m_mDagModifier->connect( sP, dP );

			// vstAim.rotation -> toAim.rotation
			// These have to be connected individually because Maya plays stupid tricks
			// with rotateOrder if they aren't
			sP = vstAimFn.findPlug( "rotateX" );
			dP = toAimFn.findPlug( "rotateX" );
			m_mDagModifier->connect( sP, dP );

			sP = vstAimFn.findPlug( "rotateY" );
			dP = toAimFn.findPlug( "rotateY" );
			m_mDagModifier->connect( sP, dP );

			sP = vstAimFn.findPlug( "rotateZ" );
			dP = toAimFn.findPlug( "rotateZ" );
			m_mDagModifier->connect( sP, dP );

			if ( m_mDagModifier->doIt() != MS::kSuccess )
			{
				displayWarning( MString( GetName() ) + ": Couldn't connect everything when creating" );
			}

			// Save the current selection just in case we want to undo stuff
			MGlobal::getActiveSelectionList( m_mSelectionList );

			MGlobal::select( vstAimObj, MGlobal::kReplaceList );
			setResult( vstAimFn.name() );
		}
		else if ( m_mArgDatabase->isFlagSet( "select" ) )
		{
			MSelectionList mSelectionList;
			MDagPath mDagPath;

			for ( MItDag dagIt; !dagIt.isDone(); dagIt.next() )
			{
				if ( MFnDependencyNode( dagIt.item() ).typeName() == GetName() )
				{
					dagIt.getPath( mDagPath );
					mSelectionList.add( mDagPath, MObject::kNullObj, true );
				}
			}

			if ( mSelectionList.length() )
			{
				m_undoable = true;
				// Save the current selection just in case we want to undo stuff
				MGlobal::getActiveSelectionList( m_mSelectionList );
				MGlobal::setActiveSelectionList( mSelectionList, MGlobal::kReplaceList );
			}
		}
		else
		{
			displayError( GetName() + ": No valid operation specified via command line arguments\n" );
		}
	}

	return MS::kSuccess;
}
コード例 #14
0
//------------------------------------------------------------------------------
//
bool LocatorRepresentation::activate()
{
   MPxAssembly* const assembly = getAssembly();

   // Create a locator node, and parent it to our container.
   MDagModifier dagMod;
   MStatus status;
   dagMod.createNode(MString("locator"), assembly->thisMObject(), &status);   
  
   if (status != MStatus::kSuccess) {
      return false;
   }
   status = dagMod.doIt();
   if (status != MStatus::kSuccess) {
      return false;
   }

   // If we have annotation text, create an annotation shape, and a
   // transform for it.  Parent the annotation transform to the assembly.
   if (fAnnotation.numChars() > 0) {
      MObject transformObj = dagMod.createNode(
         MString("transform"), assembly->thisMObject(), &status);

      if (status != MStatus::kSuccess) {
         return false;
      }

	  MString  annotationName =  "annotation";
	  // the + "#" forces Maya to rename using integers for unique names
	  MString  transformName = annotationName + "#";
      dagMod.renameNode(transformObj, transformName);
 
      status = dagMod.doIt();
      if (status != MStatus::kSuccess) {
         return false;
      }

      MObject annotationObj = dagMod.createNode(
         MString("annotationShape"), transformObj, &status);

      if (status != MStatus::kSuccess) {
         return false;
      }
      status = dagMod.doIt();
      if (status != MStatus::kSuccess) {
         return false;
      }

      // Set the annotation text.
      MFnDependencyNode annotation(annotationObj);
      MPlug text = annotation.findPlug(MString("text"), true, &status);
      if (status != MStatus::kSuccess) {
         return false;
      }
      text.setValue(fAnnotation);

      // Get rid of the arrow: our annotation doesn't need to be
      // offset from the locator for readability, since the locator
      // has no volume.  Therefore, we don't need an arrow to point
      // from the annotation back to the object.
      MPlug displayArrow =
         annotation.findPlug(MString("displayArrow"), true, &status);
      if (status != MStatus::kSuccess) {
         return false;
      }
      displayArrow.setValue(false);
   }
   
   return status == MStatus::kSuccess;
}
コード例 #15
0
MStatus	Molecule3Cmd::redoIt()
{
	MStatus stat;
	MDagPath dagPath;
	MFnMesh meshFn;
		
	// Create a ball
	int nBallPolys;
	MPointArray ballVerts;
	MIntArray ballPolyCounts;
	MIntArray ballPolyConnects;
	MFloatArray ballUCoords;
	MFloatArray ballVCoords;
	MIntArray ballFvUVIDs;
	genBall( MPoint::origin, ballRodRatio * radius.value(), segs, nBallPolys, 
			 ballVerts, ballPolyCounts, ballPolyConnects,
			 true, ballUCoords, ballVCoords, ballFvUVIDs );
		
	unsigned int i, j, vertOffset;
	MPointArray meshVerts;
	MPoint p0, p1;
	MObject objTransform;
	
	// Setup for rods
	int nRodPolys;
	MPointArray rodVerts;
	MIntArray rodPolyCounts;
	MIntArray rodPolyConnects;
	MFloatArray rodUCoords;
	MFloatArray rodVCoords;
	MIntArray rodFvUVIDs;
	
	// Setup for newMesh
	int nNewPolys;
	MPointArray newVerts;
	MIntArray newPolyCounts;
	MIntArray newPolyConnects;
	MFloatArray newUCoords;
	MFloatArray newVCoords;
	MIntArray newFvUVIDs;
	
	int uvOffset; 
	MDagModifier dagMod;
	MFnDagNode dagFn;
	
	objTransforms.clear();
	
	// Iterate over the meshes
	unsigned int mi;
	for( mi=0; mi < selMeshes.length(); mi++ )
	{								
		dagPath = selMeshes[mi];
		meshFn.setObject( dagPath );
		
		uvOffset = 0;
		nNewPolys = 0;
		newVerts.clear();
		newPolyCounts.clear();
		newPolyConnects.clear();
		newUCoords.clear();
		newVCoords.clear();
		newFvUVIDs.clear();
		
		// Generate balls
		meshFn.getPoints( meshVerts, MSpace::kWorld );
		for( i=0; i < meshVerts.length(); i++ )
		{
			vertOffset = newVerts.length();
			
			// Add the ball to the new mesh
			nNewPolys += nBallPolys;
			
			// Move the ball vertices to the mesh vertex. Add it to the newMesh
			for( j=0; j < ballVerts.length(); j++ )
				newVerts.append( meshVerts[i] + ballVerts[j] );
				
			for( j=0; j < ballPolyCounts.length(); j++ )
				newPolyCounts.append( ballPolyCounts[j] );
				
			for( j=0; j < ballPolyConnects.length(); j++ )
				newPolyConnects.append( vertOffset + ballPolyConnects[j] );
		
			// Only add the uv coordinates once, since they are shared
			// by all balls
			if( i == 0 )
			{
				for( j=0; j < ballUCoords.length(); j++ )
				{
					newUCoords.append( ballUCoords[j] );
					newVCoords.append( ballVCoords[j] );
				}				
			}
			
			for( j=0; j < ballFvUVIDs.length(); j++ )
			{
				newFvUVIDs.append( uvOffset + ballFvUVIDs[j] );
			}
		}
		
		uvOffset = newUCoords.length();
		
		// Generate rods
		int nRods = 0;
		MItMeshEdge edgeIter( dagPath );
		for( ; !edgeIter.isDone(); edgeIter.next(), nRods++  )
		{	
			p0 = edgeIter.point( 0, MSpace::kWorld );		
			p1 = edgeIter.point( 1, MSpace::kWorld );
			
			// N.B. Generate the uv coordinates only once since they
			// are referenced by all rods
			genRod( p0, p1, 
					radius.value(), segs, nRodPolys, 
					rodVerts, rodPolyCounts, rodPolyConnects,
					nRods == 0,	rodUCoords, rodVCoords,
					rodFvUVIDs ); 

			vertOffset = newVerts.length();
			
			// Add the rod to the mesh
			nNewPolys += nRodPolys;
			
			for( i=0; i < rodVerts.length(); i++ )
				newVerts.append( rodVerts[i] );
				
			for( i=0; i < rodPolyCounts.length(); i++ )
				newPolyCounts.append( rodPolyCounts[i] );
				
			for( i=0; i < rodPolyConnects.length(); i++ )
				newPolyConnects.append( vertOffset + rodPolyConnects[i] );

			// First rod
			if( nRods == 0 )
			{
				// Add rod's uv coordinates to the list
				for( i=0; i < rodUCoords.length(); i++ )
				{
					newUCoords.append( rodUCoords[i] );
					newVCoords.append( rodVCoords[i] );
				}
			}
			
			// Set the face-vertex-uvIDs
			for( i=0; i < rodFvUVIDs.length(); i++ )
			{
				newFvUVIDs.append( uvOffset + rodFvUVIDs[i] );
			}
		}
		
		objTransform = meshFn.create( newVerts.length(), nNewPolys, newVerts, 
									  newPolyCounts, newPolyConnects,
									  newUCoords, newVCoords, 
									  MObject::kNullObj, &stat ); 
		if( !stat )
		{
			MGlobal::displayError( MString( "Unable to create mesh: " ) + stat.errorString() );
			return stat;
		}	
		
		objTransforms.append( objTransform );
				
		meshFn.assignUVs( newPolyCounts, newFvUVIDs );
				
		meshFn.updateSurface();
		
		// Rename transform node
		dagFn.setObject( objTransform );
		dagFn.setName( "molecule" );
				
		// Put mesh into the initial shading group
		dagMod.commandToExecute( MString( "sets -e -fe initialShadingGroup " ) + meshFn.name() );
	}

	// Select all the newly created molecule meshes
	MString cmd( "select -r" );
	for( i=0; i < objTransforms.length(); i++ )
	{
		dagFn.setObject( objTransforms[i] );
		cmd += " " + dagFn.name();	
	}

	dagMod.commandToExecute( cmd );
	
	return dagMod.doIt();
}
コード例 #16
0
void EntityNode::LoadArt()
{
    MStatus stat;
    bool callbackRemoved = false;
    if( s_EditNodeAddedCBId != -1 )
    {
        MDGMessage::removeCallback( s_EditNodeAddedCBId );
        s_EditNodeAddedCBId = -1;
        callbackRemoved = true;
    }

    UnloadArt();

    MString artFilePath;
    GetArtFilePath( artFilePath );
    std::cout << "Importing from: " << artFilePath.asTChar() << "..." << std::endl;

    // add the callback to catch all the imported objects
    MObjectArray objectArrays[NodeArrays::Count];
    s_ImportNodeAddedCBId = MDGMessage::addNodeAddedCallback( ImportNodeAddedCallback, kDefaultNodeType, &objectArrays );

    // import stuff
    MFileIO::import( artFilePath, NULL, false );

    // remove the callback
    MDGMessage::removeCallback( s_ImportNodeAddedCBId );

    // add all imported stuff under this guy's transform
    MFnDagNode nodeFn( thisMObject() );
    for( u32 i=0; i<objectArrays[NodeArrays::KeepNodes].length(); ++i )
    {
        if( objectArrays[NodeArrays::KeepNodes][i].isNull() )
        {
            continue;
        }

        MObjectHandle handle( objectArrays[NodeArrays::KeepNodes][i] );
        if ( !handle.isValid() )
        {
            continue;
        }

        // We should be getting only MFnDagNode in here, but just in case
        MFnDagNode dagFn( objectArrays[NodeArrays::KeepNodes][i], &stat );
        if ( stat == MStatus::kSuccess )
        {
            stat = dagFn.setDoNotWrite( true );
        }
        else
        {
            MFnDependencyNode depNodeFn( objectArrays[NodeArrays::KeepNodes][i], &stat );
            stat = depNodeFn.setDoNotWrite( true );
        }

#ifdef _DEBUG
        MString name = dagFn.name();
        MString type = dagFn.typeName();
        std::string nodeTypeStr( objectArrays[NodeArrays::KeepNodes][i].apiTypeStr() );

        if ( name.length() )
        {
            std::cout << " - Importing Child: " << name.asTChar() << " " << type.asTChar() << "(" << nodeTypeStr << ")" << std::endl;
        }
#endif

        AddImportNode( objectArrays[NodeArrays::KeepNodes][i] );   
        nodeFn.addChild( objectArrays[NodeArrays::KeepNodes][i] );
    }

    for( u32 i=0; i<objectArrays[NodeArrays::DeleteNodes].length(); ++i )
    {
        MGlobal::deleteNode( objectArrays[NodeArrays::DeleteNodes][i] );
    }

    MFnDagNode otherFn;
    for( u32 i=0 ; i<nodeFn.childCount(); ++i )
    {
        MObject child = nodeFn.child( i );
        if( !child.hasFn( MFn::kDagNode ) ) 
        {
            continue;
        }

        otherFn.setObject( child );
        if( otherFn.typeId() == EntityNode::s_TypeID )
        {
            MDagModifier mod;
            u32 numChild = otherFn.childCount();
            for( u32 j = 0; j < numChild; ++j )
            {
                stat = mod.reparentNode( otherFn.child( j ), thisMObject() );
            }
            mod.doIt();

            MGlobal::deleteNode( child );
            break;
        }
    }

    std::cout << "Done" << std::endl;

}
コード例 #17
0
ファイル: HesperisCmd.cpp プロジェクト: spinos/aphid
MStatus HesperisCmd::attachSelected(const Vector3F & offsetV)
{
	MGlobal::displayInfo(MString(" attach to grow mesh ") + m_growMeshName);
	MSelectionList selList;
    MGlobal::getActiveSelectionList(selList);
    
	MItSelectionList iter( selList );
	
	MDagPath apath;		
	iter.getDagPath( apath );
		
	MObject otrans = apath.node();
	if(!otrans.hasFn(MFn::kTransform)) {
		MGlobal::displayWarning("must select a transform/group to attach to grow mesh");
		return MS::kFailure;
	}
	
	ASearchHelper searcher;
	MDagPath meshGrp;
	if(!searcher.dagByFullName(m_growMeshName.asChar(), meshGrp)) {
		MGlobal::displayWarning(MString("cannot find grow mesh by name ")+m_growMeshName);
		return MS::kFailure;
	}
	MObject ogrow = meshGrp.node();
	if(!ogrow.hasFn(MFn::kTransform)) {
		MGlobal::displayWarning("-gm must be a transform/group");
		return MS::kFailure;
	}
	
	MStatus stat;
    MDGModifier modif;
	MDagModifier dmodif;
	MObject hestranslate = modif.createNode("hesperisTranslateNode", &stat);
	modif.doIt();
    
    if(hestranslate.isNull()) {
		MGlobal::displayWarning("cannot create hes translate node");
		return MS::kFailure;
	}
	
	MFnDependencyNode fhest(hestranslate);
	MFnDependencyNode fgrow(ogrow);
	
	modif.connect(fgrow.findPlug("boundingBoxMinX", true), fhest.findPlug("bBoxMinX", true));
	modif.connect(fgrow.findPlug("boundingBoxMinY", true), fhest.findPlug("bBoxMinY", true));
	modif.connect(fgrow.findPlug("boundingBoxMinZ", true), fhest.findPlug("bBoxMinZ", true));
	modif.connect(fgrow.findPlug("boundingBoxMaxX", true), fhest.findPlug("bBoxMaxX", true));
	modif.connect(fgrow.findPlug("boundingBoxMaxY", true), fhest.findPlug("bBoxMaxY", true));
	modif.connect(fgrow.findPlug("boundingBoxMaxZ", true), fhest.findPlug("bBoxMaxZ", true));
	
	MPlug psrcwpmat = fgrow.findPlug("parentMatrix", true, &stat);
	if(!stat) MGlobal::displayInfo("cannot find plug worldParentMatrix");
	modif.connect(psrcwpmat, fhest.findPlug("inParentMatrix", true));
	modif.doIt();
	
    MFnDependencyNode ftrans(otrans);

	dmodif.connect(fhest.findPlug("outTranslateX", true), ftrans.findPlug("translateX", true));
	dmodif.connect(fhest.findPlug("outTranslateY", true), ftrans.findPlug("translateY", true));
	dmodif.connect(fhest.findPlug("outTranslateZ", true), ftrans.findPlug("translateZ", true));
	stat = dmodif.doIt();
	if(!stat) MGlobal::displayInfo(MString("cannot make some connections to ")+ftrans.name());
    
    fhest.findPlug("offsetX").setValue((double)-offsetV.x);
    fhest.findPlug("offsetY").setValue((double)-offsetV.y);
    fhest.findPlug("offsetZ").setValue((double)-offsetV.z);
    return MS::kSuccess;
}
コード例 #18
0
ファイル: Utility.cpp プロジェクト: andreaforapani/vHelix
	MStatus HelixBase_RemoveAllAimConstraints(MObject & helixBase, const char *type) {
		MStatus status;

		MFnDagNode this_dagNode(helixBase, &status);

		if (!status) {
			status.perror("MFnDagNode::#ctor");
			return status;
		}

		unsigned int this_childCount = this_dagNode.childCount(&status);
		bool foundAimConstraint = false;
		MDagModifier dagModifier;

		if (!status) {
			status.perror("MFnDagNode::childCount");
			return status;
		}

		for(unsigned int i = 0; i < this_childCount; ++i) {
			MObject child_object = this_dagNode.child(i, &status);

			if (!status) {
				if (status == MStatus::kInvalidParameter) {
					/*
					 * There seems to be a bug in Maya when opening an already existing file that nodes are reported to have children but the MFnDagNode::child will fail
					 */

					return MStatus::kSuccess;
				}
				status.perror("MFnDagNode::child");
				return status;
			}

			MFnDagNode child_dagNode(child_object, &status);

			if (!status) {
				status.perror("MFnDagNode::#ctor");
				return status;
			}

			if (child_dagNode.typeName() == "aimConstraint") {
				foundAimConstraint = true;
				//std::cerr << "Found an old aimconstraint to delete named: " << child_dagNode.name().asChar() << std::endl;

				// DEBUG:

				/*if (child_object.isNull()) {
					std::cerr << "The object is null! terminating!" << std::endl;
					return MStatus::kSuccess;
				}*/

				// This is the operation that crashes Maya when creating a "New scene"

				if (!(status = dagModifier.deleteNode(child_object))) {
					status.perror("MDagModifier::deleteNode");
					return status;
				}
			}
		}

		// Execute deletion and reset transformation into translation only

		if (foundAimConstraint) {
			if (!(status = dagModifier.doIt())) {
				status.perror("MDagModifier::doIt");
				return status;
			}

			MFnTransform this_transform(helixBase, &status);

			if (!status) {
				status.perror("MFnTransform::#ctor");
				return status;
			}

			double rotation[] = { 0.0, 0.0, 0.0 };
			if (!(status = this_transform.setRotation(rotation, MTransformationMatrix::kXYZ))) {
				status.perror("MFnTransform::setRotation");
				return status;
			}
		}

		return MStatus::kSuccess;
	}
コード例 #19
0
bool ToMayaLocatorConverter::doConversion( IECore::ConstObjectPtr from, MObject &to, IECore::ConstCompoundObjectPtr operands ) const
{
	ConstCoordinateSystemPtr coordSys = IECore::runTimeCast<const CoordinateSystem>( from );
	if ( !coordSys )
	{
		IECore::msg( IECore::Msg::Warning, "ToMayaLocatorConverter::doConversion",  "The source object is not an IECore::CoordinateSystem." );
		return false;
	}
	
	// check if incoming object is a locator itself
	MObject locatorObj;
	if ( to.hasFn( MFn::kLocator ) )
	{
		locatorObj = to;
	}
	
	// check if incoming object is a parent of an existing locator
	if ( locatorObj.isNull() )
	{
		MFnDagNode fnTo( to );
		for ( unsigned i=0; i < fnTo.childCount(); ++i )
		{
			MObject child = fnTo.child( i );
			if ( child.hasFn( MFn::kLocator ) )
			{
				locatorObj = child;
				break;
			}
		}
	}
	
	// make a new locator and parent it to the incoming object
	if ( locatorObj.isNull() )
	{
		if ( !MFnTransform().hasObj( to ) )
		{
			IECore::msg( IECore::Msg::Warning, "ToMayaLocatorConverter::doConversion",  "Unable to create a locator as a child of the input object." );
			return false;
		}
		
		MDagModifier dagMod;
		locatorObj = dagMod.createNode( "locator", to );
		dagMod.renameNode( locatorObj, coordSys->getName().c_str() );
		if ( !dagMod.doIt() )
		{
			IECore::msg( IECore::Msg::Warning, "ToMayaLocatorConverter::doConversion",  "Unable to modify the DAG correctly." );
			dagMod.undoIt();
			return false;
		}
	}
	
	if ( locatorObj.isNull() )
	{
		IECore::msg( IECore::Msg::Warning, "ToMayaLocatorConverter::doConversion",  "Unable to find or create a locator from the input object." );
		return false;
	}
	
	MFnDagNode fnLocator( locatorObj );
	
	Imath::M44f m = coordSys->getTransform()->transform();
	Imath::V3f s,h,r,t;
	Imath::extractSHRT(m, s, h, r, t);

	/// obtain local position and scale from locator
	MStatus st;
	MPlug positionPlug = fnLocator.findPlug( "localPositionX", &st );
	if ( !st ) return false;
	positionPlug.setValue(t[0]);
	positionPlug = fnLocator.findPlug( "localPositionY", &st );
	if ( !st ) return false;
	positionPlug.setValue(t[1]);
	positionPlug = fnLocator.findPlug( "localPositionZ", &st );
	if ( !st ) return false;
	positionPlug.setValue(t[2]);

	MPlug scalePlug = fnLocator.findPlug( "localScaleX", &st );
	if ( !st ) return false;
	scalePlug.setValue(s[0]);
	scalePlug = fnLocator.findPlug( "localScaleY", &st );
	if ( !st ) return false;
	scalePlug.setValue(s[1]);
	scalePlug = fnLocator.findPlug( "localScaleZ", &st );
	if ( !st ) return false;
	scalePlug.setValue(s[2]);

	return true;
}
コード例 #20
0
ファイル: CameraHelper.cpp プロジェクト: BigRoy/Maya-devkit
MObject create(Alembic::AbcGeom::ICamera & iNode, MObject & iParent)
{
    Alembic::AbcGeom::ICameraSchema schema = iNode.getSchema();
    MString name(iNode.getName().c_str());

    MFnCamera fnCamera;
    MObject obj = fnCamera.create(iParent);
    fnCamera.setName(name);

    // we need to read this to determine the film fit
    Alembic::AbcGeom::CameraSample samp;
    iNode.getSchema().get(samp);

    std::size_t numOps = samp.getNumOps();
    if (numOps > 0)
    {
        std::string hint = samp[0].getHint();
        if (hint == "filmFitFill")
        {
            fnCamera.setFilmFit(MFnCamera::kFillFilmFit);
        }
        else if (hint == "filmFitHorz")
        {
            fnCamera.setFilmFit(MFnCamera::kHorizontalFilmFit);
        }
        else if (hint == "filmFitVert")
        {
            fnCamera.setFilmFit(MFnCamera::kVerticalFilmFit);
        }
        else if (hint == "filmFitOver")
        {
            fnCamera.setFilmFit(MFnCamera::kOverscanFilmFit);
        }
    }

    if (schema.isConstant())
    {

        // no center of interest
        fnCamera.setFocalLength(samp.getFocalLength());
        fnCamera.setLensSqueezeRatio(samp.getLensSqueezeRatio());
        // camera scale might be in the 3x3

        // weirdo attrs that are in inches
        fnCamera.setHorizontalFilmAperture(samp.getHorizontalAperture()/2.54);
        fnCamera.setVerticalFilmAperture(samp.getVerticalAperture()/2.54);
        fnCamera.setHorizontalFilmOffset(samp.getHorizontalFilmOffset()/2.54);
        fnCamera.setVerticalFilmOffset(samp.getVerticalFilmOffset()/2.54);

        // film fit offset might be in the 3x3

        if (samp.getOverScanLeft() == samp.getOverScanRight() &&
            samp.getOverScanTop() == samp.getOverScanBottom() &&
            samp.getOverScanLeft() == samp.getOverScanTop())
        {
            fnCamera.setOverscan(samp.getOverScanLeft() + 1.0);
        }
        else
        {
            MString warn = iNode.getName().c_str();
            warn += " has unsupported overscan values.";
            MGlobal::displayWarning(warn);
        }

        fnCamera.setNearClippingPlane(samp.getNearClippingPlane());
        fnCamera.setFarClippingPlane(samp.getFarClippingPlane());

        // prescale, film translate H, V, roll pivot H,V, film roll value
        // post scale might be in the 3x3

        fnCamera.setFStop(samp.getFStop());
        fnCamera.setFocusDistance(samp.getFocusDistance());

        MTime sec(1.0, MTime::kSeconds);
        fnCamera.setShutterAngle(Alembic::AbcGeom::DegreesToRadians(
            360.0 * (samp.getShutterClose()-samp.getShutterOpen()) *
            sec.as(MTime::uiUnit()) ));

        for (std::size_t i = 0; i < numOps; ++i)
        {
            Alembic::AbcGeom::FilmBackXformOp & op = samp[i];
            if (op.getHint() == "filmFitOffs")
            {
                double val = op.getChannelValue(0) *
                    samp.getHorizontalAperture() / 5.08;

                if (val != 0.0)
                {
                    fnCamera.setFilmFitOffset(val);
                }
                else
                {
                    fnCamera.setFilmFitOffset(op.getChannelValue(1) *
                        samp.getHorizontalAperture() / 5.08);
                }
            }
            else if (op.getHint() == "preScale")
            {
                fnCamera.setPreScale(1.0/op.getChannelValue(0));
            }
            else if (op.getHint() == "filmTranslate")
            {
                fnCamera.setFilmTranslateH(op.getChannelValue(0));
                fnCamera.setFilmTranslateV(op.getChannelValue(1));
            }
            else if (op.getHint() == "postScale")
            {
                fnCamera.setPostScale(1.0/op.getChannelValue(0));
            }
            else if (op.getHint() == "cameraScale")
            {
                fnCamera.setCameraScale(op.getChannelValue(0));
            }
        }
    }

    // extra transform node is unfortuneatly automatically created above the
    // camera, let's do some reparenting and delete that extra transform
    MDagPath path;
    fnCamera.getPath(path);
    MObject camObj = path.node();

    MDagModifier dagMod;
    dagMod.reparentNode(camObj, iParent);
    dagMod.doIt();
    dagMod.deleteNode(obj);
    dagMod.doIt();

    return camObj;
}