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# moveCurveCVsCmd.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.
    // ==========================================================================
    //+

    //
    //      Iterates over selected CVs - sets CV to world 0.0
    //

    #include <maya/MIOStream.h>
    #include <maya/MPxCommand.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/MDagPath.h>
    #include <maya/MFnPlugin.h>
    #include <maya/MFnNurbsCurve.h>
    #include <maya/MItCurveCV.h>

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

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

    moveCurveCVs::~moveCurveCVs() {}

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

    MStatus moveCurveCVs::doIt( const MArgList& )
    {
        MStatus stat;

        // Create a selection list iterator
        // set the filter moveCurveCVsComponents
        //
        MSelectionList list;
        MGlobal::getActiveSelectionList( list );
        MItSelectionList * iter = new MItSelectionList( list,
                                                        MFn::kCurveCVComponent,
                                                        &stat );

        if ( MS::kSuccess == stat ) {
            MDagPath    mdagPath;       // Item dag path
            MObject     mComponent;     // Current component
            double      coord[4] = {0.0,0.0,0.0,0.0};
            MPoint      point( coord );

            // Iterate over all selected curves
            //
            for ( ; !iter->isDone(); iter->next() )
            {
                // Create a function set to operate on selected curves
                //
                iter->getDagPath( mdagPath, mComponent );
                MItCurveCV fnmoveCurveCVs( mdagPath, mComponent, &stat );

                if ( MS::kSuccess == stat ) {
                    for ( ; !fnmoveCurveCVs.isDone(); fnmoveCurveCVs.next() )
                    {
                        fnmoveCurveCVs.setPosition( point, MSpace::kWorld );
                    }
                    fnmoveCurveCVs.updateCurve();
                }
                else {
                    cerr << "Function set error\n";
                }
            }
        }
        else {
            cerr << "Error creating selection list iterator\n";
        }
        return stat;
    }

    MStatus initializePlugin( MObject obj )
    {
        MStatus   status;
        MFnPlugin plugin( obj, PLUGIN_COMPANY, "3.0", "Any");

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

        return status;
    }

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

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

        return status;
    }