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;
}