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