motionPathCmd.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.
// ==========================================================================
//+

#include <string.h>
#include <maya/MIOStream.h>
#include <maya/MFnPlugin.h>
#include <maya/MString.h>
#include <maya/MArgList.h>
#include <maya/MSelectionList.h>
#include <maya/MItSelectionList.h>
#include <maya/MGlobal.h>
#include <maya/MDagPath.h>
#include <maya/MFnMotionPath.h>
#include <maya/MFnDependencyNode.h>
#include <maya/MTime.h>
#include <maya/MPxCommand.h>

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

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

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

motionPath::~motionPath() {}

MStatus motionPath::doIt( const MArgList& )
{
        MObject                 mdepNode;
        MObject                 component;
        MDagPath                motionCurve;
        MDagPath                objectToAnimate;
        MStatus                 stat = MS::kSuccess;
        MTime                   startTime( 0.0 );
        MTime                   endTime( 48.0 );

        MSelectionList slist;
        MGlobal::getActiveSelectionList( slist );
        MItSelectionList itr( slist );

        for (; !itr.isDone(); itr.next() )
        {

                if ( !objectToAnimate.isValid() ) {
                        itr.getDagPath( objectToAnimate, component );
                }
                else if ( !motionCurve.isValid() ) {
                        itr.getDagPath( motionCurve, component );
                }
                else {
                        break;
                }
        }

        if ( (objectToAnimate.isValid()) && (motionCurve.isValid()) ) {

                MFnMotionPath fnMotionPath;
                mdepNode = fnMotionPath.create( motionCurve, objectToAnimate, 
                                                                        startTime, endTime );
        
//              MDagPath dagPath = fnMotionPath.pathObject();
//              MObject pathObj = dagPath.transform();
        }


        return stat;
}

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

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

        return status;
}

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

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

        return status;
}

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