
#ifndef _MPxSpringNode
#define _MPxSpringNode
//
//-
// ==========================================================================
// 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// material (collectively the "Data") in these files contain unpublished 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:    MPxSpringNode
//
// *****************************************************************************
//
// CLASS DESCRIPTION (MPxSpringNode)
//
// MPxSpringNode allows the creation and manipulation of dependency graph
// nodes representing springs.  This is the top level of a hierarchy of
// spring node function sets.  It permits manipulation of the attributes
// common to all types of springs.
//
// *****************************************************************************

#if defined __cplusplus

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

// INCLUDED HEADER FILES


#include <maya/MStatus.h>
#include <maya/MObject.h>
#include <maya/MPxNode.h>
#include <maya/MPointArray.h>
#include <maya/MVectorArray.h>
#include <maya/MDoubleArray.h>


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

// DECLARATIONS

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

// CLASS DECLARATION (MPxSpringNode)

/// Base class for user defined spring law (OpenMayaFX)
/**
*/


// Manage dependency graph nodes representing springs

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

class OPENMAYAFX_EXPORT MPxSpringNode : public MPxNode
{
public:
	///
	MPxSpringNode();
	///
	virtual ~MPxSpringNode();

	///
	virtual MPxNode::Type	type() const;

	///
	virtual MStatus	applySpringLaw( double stiffness,
						double damping, double restLength,
						double endMass1, double endMass2,
						const MVector &endP1, const MVector &endP2,
						const MVector &endV1, const MVector &endV2,
						MVector &forceV1, MVector &forceV2 );


	/////////////////////////
	// Inherited attributes
	/////////////////////////

	// General attributes for spring.
	//
	/// from end weight attribute
	static MObject	mEnd1Weight;
	/// to end weight attribute
	static MObject	mEnd2Weight;

	/// delta time attribute
	static MObject	mDeltaTime;

protected:
// No protected members

private:
// No private members

	static void			initialSetup();
	static const char*	className();

};

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


//****************************************************************************
#endif /* __cplusplus */
#endif /* _MPxSpringNode */

