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# translateCmd.cpp

    //-
    // ==========================================================================
    // Copyright 1995,2006,2008 Autodesk, Inc. All rights reserved.
    //
    // Use of this software is subject to the terms of the Autodesk
    // license agreement provided at the time of installation or download,
    // or which otherwise accompanies this software in either electronic
    // or hard copy form.
    // ==========================================================================
    //+

    //
    //      Translate selected objects
    //

    #include <maya/MIOStream.h>

    #include <maya/MPxCommand.h>
    #include <maya/MFnPlugin.h>
    #include <maya/MString.h>
    #include <maya/MArgList.h>
    #include <maya/MGlobal.h>
    #include <maya/MSelectionList.h>
    #include <maya/MItSelectionList.h>
    #include <maya/MPoint.h>
    #include <maya/MVector.h>
    #include <maya/MDagPath.h>

    #include <maya/MItCurveCV.h>
    #include <maya/MItSurfaceCV.h>
    #include <maya/MItMeshVertex.h>

    class translate : public MPxCommand
    {
    public:
                        translate() {};
        virtual         ~translate();

        MStatus         doIt( const MArgList& args );
        static void*    creator();
    };

    translate::~translate() {}

    void* translate::creator()
    {
        return new translate();
    }

    // If given no arguments, translate all selected objects by 1 unit on
    // the X axis.  If 3 double parameters are given, they specify the X,
    // Y, and Z components of the vector to translate objects by.
    MStatus translate::doIt( const MArgList& args )
    {
        MStatus stat;
        MVector     vector( 1.0, 0.0, 0.0 );

        if ( args.length() == 3 )  {
            unsigned i = 0;
            vector = args.asVector(i,3);
        }

        // Create a selection list iterator
        //
        MSelectionList slist;
        MGlobal::getActiveSelectionList( slist );
        MItSelectionList iter( slist, MFn::kInvalid, &stat );

        if ( MS::kSuccess == stat ) {
            MDagPath    mdagPath;       // Item dag path
            MObject     mComponent;     // Current component

            // Translate all selected objects
            //
            for ( ; !iter.isDone(); iter.next() )
            {
                // Get path and possibly a component
                //
                iter.getDagPath( mdagPath, mComponent );

                MItCurveCV cvFn( mdagPath, mComponent, &stat );
                if ( MS::kSuccess == stat ) {
                    for ( ; !cvFn.isDone(); cvFn.next() ) {
                        if ( MS::kFailure == cvFn.translateBy( vector ) ) {
                            cerr << "Error setting CV\n";
                        }
                    }
                    cvFn.updateCurve();
                }

                MItSurfaceCV sCvFn( mdagPath, mComponent, true, &stat );
                if ( MS::kSuccess == stat ) {
                    for ( ; !sCvFn.isDone(); sCvFn.nextRow() ) {
                        for ( ; !sCvFn.isRowDone(); sCvFn.next() ) {
                            if ( MS::kFailure == sCvFn.translateBy( vector ) ) {
                                cerr << "Error setting CV\n";
                            }
                        }
                    }
                    sCvFn.updateSurface();
                }

                MItMeshVertex vtxFn( mdagPath, mComponent, &stat );
                if ( MS::kSuccess == stat ) {
                    for ( ; !vtxFn.isDone(); vtxFn.next() ) {
                        if ( MS::kFailure == vtxFn.translateBy( vector ) ) {
                            cerr << "Error setting Vertex\n";
                        }
                    }
                    vtxFn.updateSurface();
                }

            }
        }
        else {
            cerr << "Error creating selection list iterator\n";
        }
        return MS::kSuccess;
    }

    //
    // The following routines are used to register/unregister
    // the command we are creating within Maya
    //
    MStatus initializePlugin( MObject obj )
    {
        MStatus   status;
        MFnPlugin plugin( obj, PLUGIN_COMPANY, "3.0", "Any");

        status = plugin.registerCommand( "translate", translate::creator );
        if (!status) {
            status.perror("registerCommand");
            return status;
        }

        return status;
    }

    MStatus uninitializePlugin( MObject obj)
    {
        MStatus   status;
        MFnPlugin plugin( obj );

        status = plugin.deregisterCommand( "translate" );
        if (!status) {
            status.perror("deregisterCommand");
            return status;
        }

        return status;
    }