/*This file is part of the FEBio source code and is licensed under the MIT license
listed below.

See Copyright-FEBio.txt for details.

Copyright (c) 2020 University of Utah, The Trustees of Columbia University in 
the City of New York, and others.

Permission is hereby granted, free of charge, to any person obtaining a copy
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#pragma once
#include "FEElasticMaterial.h"
#include "FEDamageMaterialPoint.h"
#include "FEDamageCriterion.h"
#include "FEDamageCDF.h"

//-----------------------------------------------------------------------------
// This material models damage in any hyper-elastic materials.

class FEDamageMaterial : public FEElasticMaterial
{
public:
	FEDamageMaterial(FEModel* pfem);
    
public:
	//! calculate stress at material point
	mat3ds Stress(FEMaterialPoint& pt) override;
    
	//! calculate tangent stiffness at material point
	tens4ds Tangent(FEMaterialPoint& pt) override;
    
	//! calculate strain energy density at material point
	double StrainEnergyDensity(FEMaterialPoint& pt) override;
    
    //! damage
    double Damage(FEMaterialPoint& pt);
    
	//! data initialization and checking
	bool Init() override;
    
	// returns a pointer to a new material point object
	FEMaterialPoint* CreateMaterialPointData() override
	{
		return new FEDamageMaterialPoint(m_pBase->CreateMaterialPointData());
	}
    
    // get the elastic material
    FEElasticMaterial* GetElasticMaterial() override { return m_pBase; }
    
public:
    FEElasticMaterial*  m_pBase;    // base elastic material
	FEDamageCDF*        m_pDamg;    // damage model
	FEDamageCriterion*  m_pCrit;    // damage criterion

	DECLARE_FECORE_CLASS();
};
