MStatus splitUV::pruneUVs( MIntArray& validUVIndices )
//
// Description:
//
// This method will remove any invalid UVIds from the component list and UVId array.
// The benefit of this is to reduce the amount of extra processing that the node would
// have to perform. It will result in less iterations through the mesh as there are
// less UVs to search for.
//
{
MStatus status;
unsigned i;
MIntArray validUVIds;
for( i = 0; i < validUVIndices.length(); i++ )
{
int uvIndex = validUVIndices[i];
validUVIds.append( fSelUVs[uvIndex] );
}
// Replace the local int array of UVIds
//
fSelUVs.clear();
fSelUVs = validUVIds;
// Build the list of valid components
//
MFnSingleIndexedComponent compFn;
compFn.create( MFn::kMeshMapComponent, &status );
MCheckStatus( status, "compFn.create( MFn::kMeshMapComponent )" );
status = compFn.addElements( validUVIds );
MCheckStatus( status, "compFn.addElements( validUVIds )" );
MObject component = compFn.object();
// Replace the component list
//
MFnComponentListData compListFn;
compListFn.create();
status = compListFn.add( component );
MCheckStatus( status, "compListFn.add( component )" );
fComponentList = compListFn.object();
return status;
}
MStatus tm_polySlot::doIt( const MArgList& )
//
// Description:
// implements the MEL tm_polySlot command.
//
// Arguments:
// args - the argument list that was passes to the command from MEL
//
// Return Value:
// MS::kSuccess - command succeeded
// MS::kFailure - command failed (returning this value will cause the
// MEL script that is being run to terminate unless the
// error is caught using a "catch" statement.
//
{
#ifdef _DEBUG
cout << endl << "####################################################" << endl;
cout << "tm_polySlot::doIt - DEBUG version info:" << endl;
#endif
MStatus status;
// Parse the selection list for objects with selected UV components.
// To simplify things, we only take the first object that we find with
// selected UVs and operate on that object alone.
//
// All other objects are ignored and return warning messages indicating
// this limitation.
//
MGlobal::getActiveSelectionList( oldSelList );
MItSelectionList selListIter( oldSelList );
selListIter.setFilter( MFn::kMesh );
// The tm_polySlot node only accepts a component list input, so we build
// a component list using MFnComponentListData.
//
// MIntArrays could also be passed into the node to represent the edgesIds,
// but are less storage efficient than component lists, since consecutive
// components are bundled into a single entry in component lists.
//
MFnComponentListData compListFn;
compListFn.create();
bool found = false;
bool foundMultiple = false;
for( ; !selListIter.isDone(); selListIter.next() )
{
MDagPath dagPath;
MObject component;
selListIter.getDagPath( dagPath, component );
// Check for selected UV components
//
if( component.apiType() == MFn::kMeshEdgeComponent )
{
if( !found )
{
// The variable 'component' holds all selected components on the selected
// object, thus only a single call to MFnComponentListData::add() is needed
// to store the selected components for a given object.
//
compListFn.add( component );
// Copy the component list created by MFnComponentListData into our local
// component list MObject member.
//
fComponentList = compListFn.object();
// Locally store the actual edgesIds of the selected Edges so that this command
// can directly modify the mesh in the case when there is no history and
// history is turned off.
//
MFnSingleIndexedComponent compFn( component );
compFn.getElements( fSelEdges );
// Ensure that this DAG path will point to the shape of our object.
// Set the DAG path for the polyModifierCmd.
//
dagPath.extendToShape();
setMeshNode( dagPath );
found = true;
}
else
{
// Break once we have found a multiple object holding selected UVs, since
// we are not interested in how many multiple objects there are, only
// the fact that there are multiple objects.
//
foundMultiple = true;
break;
}
}
}
if( foundMultiple )
{
displayWarning("Found more than one object with selected Edges - Only operating on first found object.");
}
if( !found )
{
displayError( "tm_polySlot command failed: Unable to find selected edges" );
return MStatus::kFailure;
}
// Initialize the polyModifierCmd node type - mesh node already set
//
setModifierNodeType( tm_polySlotNode::id );
//##################################################################
alwaysWithConstructionHistory = true;
status = doModifyPoly();
if( !status){displayError( "tm_polySlot command failed!" );return status;}
//################################################################## get polymodifier node name and select it
getModifierNodeName();
newSelList.add( modifierNodeName);
MGlobal::setActiveSelectionList( newSelList);//, MGlobal::kAddToList);
//##################################################################
successResult();
return MStatus::kSuccess;
}
// ==========================================================================================================
// ==========================================================================================================
virtual MStatus compute(const MPlug& plug, MDataBlock& dataBlock)
{
// enable this node or not
if ( dataBlock.inputValue(aEnable).asBool() == false )
{
return MS::kSuccess;
}
// check if the inpute attribute is connected
// in Not, stop compute()
// in order to avoid crash when disconnect input attributes on the fly
//cout << "isPlugConnect: " << isPlugConnect(aVolumeObj) << endl;
if ( isPlugConnect(aSourceObj) == false || isPlugConnect(aVolumeObj) == false )
{
return MS::kSuccess;
}
// execution when output attr needs to be updated
if ( plug == aOutValue || plug == aOutMesh || plug == aOutCompList )
{
// test if input source object is a valid type
if ( dataBlock.inputValue(aSourceObj).type() != MFnData::kMesh )
{
MGlobal::displayInfo( MString("No Object Input!") );
return MS::kSuccess;
}
MObject sourceObj = dataBlock.inputValue(aSourceObj).asMeshTransformed();
MArrayDataHandle arrayHandle = dataBlock.inputValue(aVolumeObj);
arrayHandle.jumpToArrayElement(0);
MSelectionList sList; // add the vertice every ligal loop
for ( int idx=0; idx < arrayHandle.elementCount(); idx++, arrayHandle.next() )
{
// first, check if the sub-plug is un-connected
if ( isPlugConnect( aVolumeObj, idx ) == false )
{
cout << "No Data " << idx << endl;
continue;
}
// second, check if the input object is mesh
if ( arrayHandle.inputValue().type() != MFnData::kMesh )
{
return MS::kSuccess;
MGlobal::displayError( "input voulme objects is not mesh" );
}
// input volume object as Wrold mesh
MObject volumeObj = arrayHandle.inputValue().asMeshTransformed();
MFnMesh sourceMeshFn;
MFnMesh volumeMeshFn;
// third, test if the input obj is compatible with meshFn
if ( volumeMeshFn.hasObj(sourceObj) && volumeMeshFn.hasObj(volumeObj) )
{
volumeMeshFn.setObject(volumeObj);
// check if object is closed
if ( isClosedMesh(volumeObj) == false )
{
if ( dataBlock.inputValue(aClosedObj).asBool() == true )
{
//MGlobal::displayInfo( MString("The volume object is not closed!") );
continue;
}
}
sourceMeshFn.setObject( sourceObj );
int numVtx = sourceMeshFn.numVertices();
vector<int> tmpCompArray; // an temporary int array to store component index
// do hit test
// to check if each source's component is inside
//
for ( int i=0; i < numVtx; i++ )
{
// get each vertex of source object
MPoint srcVtx;
sourceMeshFn.getPoint( i, srcVtx, MSpace::kWorld );
// Test how much hit is for each vertex
// declare parameters for allIntersection()
MFloatPoint raySource;
raySource.setCast(srcVtx);
MFloatVector rayDirection(0, 0, 1);
MFloatPointArray hitPoints;
MIntArray hitFaces;
bool hit = volumeMeshFn.allIntersections( raySource,
rayDirection,
NULL,
NULL,
false,
MSpace::kWorld,
99999,
false,
NULL,
true,
hitPoints,
NULL,
&hitFaces,
NULL,
NULL,
NULL,
1e-6 );
if (hit)
{
int isInside = hitFaces.length() % 2;
// cout << "isInside: " << isInside << endl;
// if the mod is odd, it's inside
if ( isInside > 0 )
{
tmpCompArray.push_back(i);
}
}
}
// declare a dynamic array to recieve All elements from tmpCompArray
int* compArray = new int[tmpCompArray.size()];
// copy array data from tmpCompArray --> compArray
memcpy( &compArray[0], &tmpCompArray[0], sizeof( int ) * tmpCompArray.size() );
// the below processes are to collect component data, and then select them in viewport
//
// first, get dagPath from the source object
MDagPath dPathSrcObj = getConnectNodeDagPath(aSourceObj);
// second, get the selection list storing components by feeding comopnet array
MSelectionList vtxSelList = getVtxSelList( dPathSrcObj, compArray, tmpCompArray.size() );
sList.merge(vtxSelList);
delete [] compArray;
}
}
// end of loop
// if so, actively select these component
int compType = dataBlock.inputValue(aComponentType).asInt();
MSelectionList currCompSelList;
if( dataBlock.inputValue(aKeepSel).asBool() == true )
{
// clear if last-time is not keep selection
if (flag==0)
{
addSelComponentList.clear();
flag = 1;
}
else
{
addSelComponentList.merge(sList); // merge the accumulative components
currCompSelList = convertVtxSListToCompSList( addSelComponentList, compType );
MGlobal::setActiveSelectionList( currCompSelList, MGlobal::kReplaceList );
flag = 1;
}
}
else
{
addSelComponentList.clear(); // celar all components
addSelComponentList.merge(sList);
currCompSelList = convertVtxSListToCompSList( addSelComponentList, compType );
MGlobal::setActiveSelectionList( currCompSelList, MGlobal::kReplaceList );
flag = 0;
}
// keep this node selecting
if ( dataBlock.inputValue(aFixPanel).asBool() == true )
MGlobal::select( thisMObject(), MGlobal::kAddToList );
// **** OUTPUT ATTRIBUTE ****
MObject currCompList = getCompListFromSList( currCompSelList );
MFnComponentListData compListDataFn;
MObject currCompListData = compListDataFn.create(); // pointer to the component data
compListDataFn.add( currCompList );
dataBlock.outputValue(aOutCompList).set( currCompListData );
//
MFnMeshData outMeshDataFn;
MObject outObj = outMeshDataFn.create();
MFnMesh outMeshFn( outObj );
outMeshFn.copy( sourceObj, outObj );
dataBlock.outputValue(aOutMesh).set( outObj );
}
// end of if ( plug == aOutValue || plug == aOutMesh )
return MS::kSuccess;
}
MStatus tm_polySplit::doIt( const MArgList& args)
{
#ifdef _DEBUG
cout << endl << "####################################################" << endl;
cout << "tm_polySplit::doIt - DEBUG version info:" << endl;
#endif
MStatus status;
MGlobal::getActiveSelectionList( oldSelList );
MArgDatabase argData( syntax(), args);
//parse flags
//
if(argData.isFlagSet( loop_Flag))
{
cmd_flag_loop = true;
argData.getFlagArgument( loop_Flag, 0, cmd_flag_loop_mode);
argData.getFlagArgument( loop_Flag, 1, cmd_flag_loop_angle);
// argData.getFlagArgument( loop_Flag, 2, cmd_flag_loop_maxcount); // - max count;
}
else if(argData.isFlagSet( sel_Flag))
{
cmd_flag_loop = false;
cmd_flag_sel = true;
}
MSelectionList selectionList;
argData.getObjects( selectionList);
MItSelectionList selListIter( selectionList );
selListIter.setFilter( MFn::kMesh );
// The tm_polySplit node only accepts a component list input, so we build
// a component list using MFnComponentListData.
//
// MIntArrays could also be passed into the node to represent the edgesIds,
// but are less storage efficient than component lists, since consecutive
// components are bundled into a single entry in component lists.
//
MFnComponentListData compListFn;
compListFn.create();
bool found = false;
bool foundMultiple = false;
MObject meshObj;
for( ; !selListIter.isDone(); selListIter.next() )
{
MDagPath dagPath;
MObject component;
selListIter.getDagPath( dagPath, component );
meshObj = dagPath.node();
// Check for selected Edges components
//
if( component.apiType() == MFn::kMeshEdgeComponent )
{
if( !found )
{
// The variable 'component' holds all selected components on the selected
// object, thus only a single call to MFnComponentListData::add() is needed
// to store the selected components for a given object.
//
compListFn.add( component );
// Copy the component list created by MFnComponentListData into our local
// component list MObject member.
//
fComponentList = compListFn.object();
// Locally store the actual edgesIds of the selected Edges so that this command
// can directly modify the mesh in the case when there is no history and
// history is turned off.
//
MFnSingleIndexedComponent compFn( component );
compFn.getElements( fSelEdges );
// Ensure that this DAG path will point to the shape of our object.
// Set the DAG path for the polyModifierCmd.
//
dagPath.extendToShape();
setMeshNode( dagPath );
found = true;
}
else
{
// Break once we have found a multiple object holding selected UVs, since
// we are not interested in how many multiple objects there are, only
// the fact that there are multiple objects.
//
foundMultiple = true;
break;
}
}
}
#ifdef _DEBUG
cout << endl << "########################## checking arguments:" << endl;
cout << endl << "fSelEdges = ";for(unsigned i=0;i<fSelEdges.length();i++) cout << fSelEdges[i] << " ";cout << endl;
#endif
if( foundMultiple )
{
displayWarning("Found more than one object with selected Edges - Only operating on first found object.");
}
if( !found )
{
displayError( "tm_polySplit command failed: Unable to find selected edges" );
return MStatus::kFailure;
}
// Initialize the polyModifierCmd node type - mesh node already set
//
setModifierNodeType( tm_polySplitNode::id );
//##################################################################
alwaysWithConstructionHistory = true;
status = doModifyPoly();
if( !status){displayError( "tm_polySplit command failed!" );return status;}
//################################################################## get polymodifier node name and select it
getModifierNodeName();
newSelList.add( modifierNodeName);
MGlobal::setActiveSelectionList( newSelList);//, MGlobal::kAddToList);
//##################################################################
setResult( modifierNodeName);
return MStatus::kSuccess;
/*
cout<<endl<<"**********"<<endl;return MStatus::kSuccess;
*/
}
bool tm_polyExtract::extractFaces_Func( MSelectionList &selectionList, MStringArray &node_names)
{
MStatus status;
MObject meshObj;
status = selectionList.getDependNode( 0, meshObj);
if(!status){MGlobal::displayError("tm_polyExtract::extractFaces_Func: Can't find object !");return false;}
MFnMesh meshFn( meshObj, &status);
if(!status){MGlobal::displayError("tm_polyExtract::extractFaces_Func: Non mesh object founded !");return false;}
MDagPath meshDagPath_first, meshDagPath;
selectionList.getDagPath( 0, meshDagPath_first);
MObject multiFaceComponent;
MIntArray inputFacesArray;
inputFacesArray.clear();
inputFacesArray.setSizeIncrement( 4096);
MFnComponentListData compListFn;
compListFn.create();
for (MItSelectionList faceComponentIter(selectionList, MFn::kMeshPolygonComponent); !faceComponentIter.isDone(); faceComponentIter.next())
{
faceComponentIter.getDagPath(meshDagPath, multiFaceComponent);
if(!(meshDagPath_first == meshDagPath))
{
MGlobal::displayError("tm_polyExtract::extractFaces_Func: Different meshes faces founded !");
return false;
}
if (!multiFaceComponent.isNull())
{
for (MItMeshPolygon faceIter(meshDagPath, multiFaceComponent); !faceIter.isDone(); faceIter.next())
{
int faceIndex = faceIter.index();
#ifdef _DEBUG
infoMStr += faceIndex;
infoMStr += " ";
#endif
inputFacesArray.append( faceIndex);
compListFn.add( multiFaceComponent );
}
}
}
if( inputFacesArray.length() == 0)
{
MGlobal::displayError("tm_polyExtract::extractFaces_Func: No faces founded !");
return false;
}
#ifdef _DEBUG
MGlobal::displayInfo( infoMStr);
#endif
meshFn.setObject( meshDagPath_first);
meshObj = meshFn.object();
// MDagModifier dagModifier;
MFnDagNode meshDagNodeFn;
MFnDependencyNode depNodeFn;
meshDagNodeFn.setObject( meshDagPath_first);
MString meshName = meshDagNodeFn.name();
MObject outMesh_attrObject = meshDagNodeFn.attribute( "outMesh");
// ----------------------------------- duplicate shape
MObject duplicated_meshObjectA;
MObject duplicated_meshObjectB;
MObject inMesh_attrObjectA;
MObject inMesh_attrObjectB;
/*
MStringArray commandResult;
MSelectionList selList;
MGlobal::executeCommand( "duplicate " + meshDagNodeFn.name(), commandResult, 1, 1);
selList.add( commandResult[0]);
selList.getDependNode( 0, duplicated_meshObjectA);
meshDagNodeFn.setObject( duplicated_meshObjectA);
meshDagNodeFn.setName( meshName + "_tA");
duplicated_meshObjectA = meshDagNodeFn.child(0);
meshDagNodeFn.setObject( duplicated_meshObjectA);
meshDagNodeFn.setName( meshName + "_sA");
inMesh_attrObjectA = meshDagNodeFn.attribute( "inMesh");
meshDagNodeFn.setObject( meshDagPath_first);
selList.clear();
MGlobal::executeCommand( "duplicate " + meshDagNodeFn.name(), commandResult, 1, 1);
selList.add( commandResult[0]);
selList.getDependNode( 0, duplicated_meshObjectB);
meshDagNodeFn.setObject( duplicated_meshObjectB);
meshDagNodeFn.setName( meshName + "_tB");
duplicated_meshObjectB = meshDagNodeFn.child(0);
meshDagNodeFn.setObject( duplicated_meshObjectB);
meshDagNodeFn.setName( meshName + "_sB");
inMesh_attrObjectB = meshDagNodeFn.attribute( "inMesh");
*/
duplicated_meshObjectA = meshDagNodeFn.duplicate();
meshDagNodeFn.setObject( duplicated_meshObjectA);
meshDagNodeFn.setName( meshName + "_tA");
duplicated_meshObjectA = meshDagNodeFn.child(0);
meshDagNodeFn.setObject( duplicated_meshObjectA);
meshDagNodeFn.setName( meshName + "_sA");
inMesh_attrObjectA = meshDagNodeFn.attribute( "inMesh");
meshDagNodeFn.setObject( meshDagPath_first);
duplicated_meshObjectB = meshDagNodeFn.duplicate();
meshDagNodeFn.setObject( duplicated_meshObjectB);
meshDagNodeFn.setName( meshName + "_tB");
duplicated_meshObjectB = meshDagNodeFn.child(0);
meshDagNodeFn.setObject( duplicated_meshObjectB);
meshDagNodeFn.setName( meshName + "_sB");
inMesh_attrObjectB = meshDagNodeFn.attribute( "inMesh");
// ----------------------------------- create node deleteComponent
MDGModifier dgModifier;
MObject deleteComponent_nodeObjectA = dgModifier.createNode( MString("deleteComponent"));
depNodeFn.setObject( deleteComponent_nodeObjectA );
MObject deleteComponent_attrObjectA( depNodeFn.attribute( "deleteComponents" ));
MObject inputGeometry_attrObjectA( depNodeFn.attribute( "inputGeometry" ));
MObject outputGeometry_attrObjectA( depNodeFn.attribute( "outputGeometry" ));
dgModifier.doIt();
depNodeFn.setName( "dfA_" + meshName);
node_names.append( depNodeFn.name());
MObject deleteComponent_nodeObjectB = dgModifier.createNode( MString("deleteComponent"));
depNodeFn.setObject( deleteComponent_nodeObjectB );
MObject deleteComponent_attrObjectB( depNodeFn.attribute( "deleteComponents" ));
MObject inputGeometry_attrObjectB( depNodeFn.attribute( "inputGeometry" ));
MObject outputGeometry_attrObjectB( depNodeFn.attribute( "outputGeometry" ));
dgModifier.doIt();
depNodeFn.setName( "dfB_" + meshName);
node_names.append( depNodeFn.name());
// ----------------------------------- set attribute deleteComponent.deleteComponents
MObject componentList_object = compListFn.object();
MPlug deleteComponents_plugA( deleteComponent_nodeObjectA, deleteComponent_attrObjectA );
status = deleteComponents_plugA.setValue( componentList_object );
MIntArray invertedFaces;
int numPolygons = meshFn.numPolygons();
invertedFaces.setLength( numPolygons - inputFacesArray.length());
int selFace = 0;
int invFace = 0;
for( int f = 0; f < numPolygons; f++)
{
if( f == inputFacesArray[selFace])
selFace++;
else
invertedFaces[invFace++] = f;
}
MFnSingleIndexedComponent singleIndexedComponentFn( meshObj);
singleIndexedComponentFn.create( MFn::kMeshPolygonComponent);
singleIndexedComponentFn.addElements( invertedFaces);
compListFn.clear();
compListFn.create();
componentList_object = singleIndexedComponentFn.object();
compListFn.add( componentList_object);
componentList_object = compListFn.object();
MPlug deleteComponents_plugB( deleteComponent_nodeObjectB, deleteComponent_attrObjectB );
status = deleteComponents_plugB.setValue( componentList_object );
// ------------------------------------- connecting plugs
/**/
dgModifier.connect(
meshObj, outMesh_attrObject,
deleteComponent_nodeObjectA, inputGeometry_attrObjectA
);
dgModifier.connect(
deleteComponent_nodeObjectA, outputGeometry_attrObjectA,
duplicated_meshObjectA, inMesh_attrObjectA
);
dgModifier.connect(
meshObj, outMesh_attrObject,
deleteComponent_nodeObjectB, inputGeometry_attrObjectB
);
dgModifier.connect(
deleteComponent_nodeObjectB, outputGeometry_attrObjectB,
duplicated_meshObjectB, inMesh_attrObjectB
);
dgModifier.doIt();
// ---------------------------------- assigning shading group
/**/
meshDagNodeFn.setObject( meshDagPath_first);
MObject instObjGroups_attrObject = meshDagNodeFn.attribute( "instObjGroups");
MPlug instObjGroups_plug( meshObj, instObjGroups_attrObject);
instObjGroups_plug = instObjGroups_plug.elementByPhysicalIndex(0);
MPlugArray instObjGroups_plug_connectionsArray;
instObjGroups_plug.connectedTo( instObjGroups_plug_connectionsArray, false, true);
if( instObjGroups_plug_connectionsArray.length() > 0)
{
MPlug dagSetMembers_plug = instObjGroups_plug_connectionsArray[0];
MObject shadingSetNode_object = dagSetMembers_plug.node();
MFnSet setFn( shadingSetNode_object);
setFn.addMember( duplicated_meshObjectA);
setFn.addMember( duplicated_meshObjectB);
//depNodeFn.setObject(shadingSetNode_object);
//MGlobal::displayInfo( depNodeFn.name());
}
// ------------------------------------------------------------
return true;
}
MStatus meshOp::doIt( const MArgList& argList )
//
// Description:
// implements the MEL meshOp command.
//
// Arguments:
// argList - the argument list that was passes to the command from MEL
//
// Return Value:
// MS::kSuccess - command succeeded
// MS::kFailure - command failed (returning this value will cause the
// MEL script that is being run to terminate unless the
// error is caught using a "catch" statement.
//
{
MStatus status;
bool badArgument = false;
// Only one parameter is expected to be passed to this command: the mesh
// operation type. Get it, validate it or stop prematurely
//
if (argList.length() == 1)
{
int operationTypeArgument = argList.asInt(0);
if (operationTypeArgument < 0
|| operationTypeArgument > kMeshOperationCount - 1)
{
badArgument = true;
}
else
{
fOperation = (MeshOperation)operationTypeArgument;
}
}
else badArgument = true;
if (badArgument)
{
cerr << "Expecting one parameter: the operation type." << endl;
cerr << "Valid types are: " << endl;
cerr << " 0 - Subdivide edge(s)." << endl;
cerr << " 1 - Subdivide face(s)." << endl;
cerr << " 2 - Extrude edge(s)." << endl;
cerr << " 3 - Extrude face(s)." << endl;
cerr << " 4 - Collapse edge(s)." << endl;
cerr << " 5 - Collapse face(s)." << endl;
cerr << " 6 - Duplicate face(s)." << endl;
cerr << " 7 - Extract face(s)." << endl;
cerr << " 8 - Split face(s)." << endl;
cerr << " 8 - Chamfer vertex(s)." << endl;
displayError(" Expecting one parameter: the operation type.");
return MS::kFailure;
}
// Each mesh operation only supports one type of components
//
MFn::Type componentType = meshOpFty::getExpectedComponentType(fOperation);
// Parse the selection list for selected components of the right type.
// To simplify things, we only take the first object that we find with
// selected components and operate on that object alone.
//
// All other objects are ignored and return warning messages indicating
// this limitation.
//
MSelectionList selList;
MGlobal::getActiveSelectionList( selList );
MItSelectionList selListIter( selList );
selListIter.setFilter( MFn::kMesh );
// The meshOperation node only accepts a component list input, so we build
// a component list using MFnComponentListData.
//
// MIntArrays could also be passed into the node to represent the ids,
// but are less storage efficient than component lists, since consecutive
// components are bundled into a single entry in component lists.
//
MFnComponentListData compListFn;
compListFn.create();
bool found = false;
bool foundMultiple = false;
for( ; !selListIter.isDone(); selListIter.next() )
{
MDagPath dagPath;
MObject component;
selListIter.getDagPath( dagPath, component );
// Check for selected components of the right type
//
if( component.apiType() == componentType )
{
if( !found )
{
// The variable 'component' holds all selected components
// on the selected object, thus only a single call to
// MFnComponentListData::add() is needed to store the selected
// components for a given object.
//
compListFn.add( component );
// Copy the component list created by MFnComponentListData
// into our local component list MObject member.
//
fComponentList = compListFn.object();
// Locally store the actual ids of the selected components so
// that this command can directly modify the mesh in the case
// when there is no history and history is turned off.
//
MFnSingleIndexedComponent compFn( component );
// Ensure that this DAG path will point to the shape
// of our object. Set the DAG path for the polyModifierCmd.
//
dagPath.extendToShape();
setMeshNode( dagPath );
found = true;
}
else
{
// Break once we have found a multiple object holding
// selected components, since we are not interested in how
// many multiple objects there are, only the fact that there
// are multiple objects.
//
foundMultiple = true;
break;
}
}
}
if( foundMultiple )
{
displayWarning("Found more than one object with selected components.");
displayWarning("Only operating on first found object.");
}
// Initialize the polyModifierCmd node type - mesh node already set
//
setModifierNodeType( meshOpNode::id );
if( found )
{
// Now, pass control over to the polyModifierCmd::doModifyPoly() method
// to handle the operation.
//
status = doModifyPoly();
if( status == MS::kSuccess )
{
setResult( "meshOp command succeeded!" );
}
else
{
displayError( "meshOp command failed!" );
}
}
else
{
displayError(
"meshOp command failed: Unable to find selected components" );
status = MS::kFailure;
}
return status;
}
