splitUVCmd.h

//-
// ==========================================================================
// 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.
// ==========================================================================
//+

#ifndef _splitUVCmd
#define _splitUVCmd
// 
// File: splitUVCmd.h
//
// MEL Command: splitUV
//
// Author: Lonnie Li
//
// Overview:
//
//              The purpose of the splitUV command is to unshare (split) any selected UVs
//              on a given object.
//
// How it works:
//
//              This command is based on the polyModifierCmd. It relies on the polyModifierCmd
//              to manage "how" the effects of the splitUV operation are applied (ie. directly
//              on the mesh or through a modifier node). See polyModifierCmd.h for more details
//
//              To understand the algorithm behind the splitUV operation, refer to splitUVFty.h.
//
// Limitations:
//
//              (1) Can only operate on a single mesh at a given time. If there are more than one
//                      mesh with selected UVs, only the first mesh found in the selection list is
//                      operated on.
//

#include "polyModifierCmd.h"
#include "splitUVFty.h"

// Function Sets
//
#include <maya/MFnComponentListData.h>

// Forward Class Declarations
//
class MArgList;

class splitUV : public polyModifierCmd
{

public:
        // Public Methods //

                                splitUV();
        virtual         ~splitUV();

        static          void* creator();

        bool            isUndoable() const;

        MStatus         doIt( const MArgList& );
        MStatus         redoIt();
        MStatus         undoIt();

        // polyModifierCmd Methods //

        MStatus         initModifierNode( MObject modifierNode );
        MStatus         directModifier( MObject mesh );

private:
        // Private Methods //

        bool            validateUVs();
        MStatus         pruneUVs( MIntArray& validUVIndices );

        // Private Data //

        // Selected UVs
        //
        // Note: The MObject, fComponentList, is only ever accessed on a single call to the plugin.
        //               It is never accessed between calls and is stored on the class for access in the
        //               overriden initModifierNode() method.
        //
        MObject                                         fComponentList;
        MIntArray                                       fSelUVs;

        // splitUV Factory
        //
        splitUVFty                              fSplitUVFactory;
};

#endif