
#ifndef _MFnExpression
#define _MFnExpression
//
//-
// ==========================================================================
// Copyright (C) 1995 - 2006 Autodesk, Inc., and/or its licensors.  All 
// rights reserved.
// 
// The coded instructions, statements, computer programs, and/or related 
// material (collectively the "Data") in these files contain unpublished 
// information proprietary to Autodesk, Inc. ("Autodesk") and/or its 
// licensors,  which is protected by U.S. and Canadian federal copyright law 
// and by international treaties.
// 
// The Data may not be disclosed or distributed to third parties or be 
// copied or duplicated, in whole or in part, without the prior written 
// consent of Autodesk.
// 
// The copyright notices in the Software and this entire statement, 
// including the above license grant, this restriction and the following 
// disclaimer, must be included in all copies of the Software, in whole 
// or in part, and all derivative works of the Software, unless such copies 
// or derivative works are solely in the form of machine-executable object 
// code generated by a source language processor.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND. 
// AUTODESK DOES NOT MAKE AND HEREBY DISCLAIMS ANY EXPRESS OR IMPLIED 
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// ==========================================================================
//+
//
// CLASS:    MFnExpression
//
// *****************************************************************************
//
// CLASS DESCRIPTION (MFnExpression)
//
// Function set for expressions.
//
// *****************************************************************************

#if defined __cplusplus

// *****************************************************************************

// INCLUDED HEADER FILES


#include <maya/MFnDependencyNode.h>
#include <maya/MObject.h>
#include <maya/MString.h>

// *****************************************************************************

// DECLARATIONS

class MDoubleArray;
class MPtrBase;

// *****************************************************************************

// CLASS DECLARATION (MFnExpression)

/// Expression function set. (OpenMaya) (OpenMaya.py)
/**

*/
#ifdef _WIN32
#pragma warning(disable: 4522)
#endif // _WIN32

class OPENMAYA_EXPORT MFnExpression : public MFnDependencyNode
{ 
	declareMFn( MFnExpression, MFnDependencyNode ); 

public:
	
	///
	enum UnitConversion {
		/// convert all units
		kAll,
		/// do not do any unit conversion
		kNone,
		/// only convert angular units
		kAngularOnly
	};

	///
	MObject  		create( const MString & expression,
							MObject & object = MObject::kNullObj,
							MStatus * ReturnStatus = NULL );

	///
	MString			expression( MStatus * ReturnStatus = NULL);
	///
	MStatus			setExpression( const MString & expression );

	///
	MStatus			getDefaultObject( MObject & object );
	///
	MStatus			setDefaultObject( MObject & object );
	///
	bool			isAnimated( MStatus * ReturnStatus = NULL );
	///
	MStatus			setAnimated( bool value = false );

	///
	MStatus			evaluate( MDoubleArray & result );

	///
	UnitConversion  unitConversion( MStatus * ReturnStatus = NULL ) const;
	///
	MStatus         setUnitConversion( UnitConversion conversion );
							
BEGIN_NO_SCRIPT_SUPPORT:

 	declareMFnConstConstructor( MFnExpression, MFnDependencyNode );
	///		NO SCRIPT SUPPORT
	MStatus			getExpression( MString & expression );
	
END_NO_SCRIPT_SUPPORT:

protected:
// No protected members

private:
// No private members

}; 

#ifdef _WIN32
#pragma warning(default: 4522)
#endif // _WIN32

#endif /* __cplusplus */
#endif /* _MFnExpression */
