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// Copyright (c) 2008-2020 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.

#pragma once

#include "NvCloth/Fabric.h"
#include "NvCloth/Range.h"
#include "CuContextLock.h"
#include "CuDeviceVector.h"

namespace nv
{

namespace cloth
{

struct CuTether
{
	CuTether(uint16_t, uint16_t);
	uint16_t mAnchor;
	uint16_t mLength;
};

class CuFabric : private CuContextLock, public Fabric
{
	CuFabric(const CuFabric&); // not implemented
	CuFabric& operator = (const CuFabric&); // not implemented

  public:
	CuFabric(CuFactory& factory, uint32_t numParticles, Range<const uint32_t> phaseIndices, Range<const uint32_t> sets,
	         Range<const float> restvalues, Range<const float> stiffnessValues, Range<const uint32_t> indices, Range<const uint32_t> anchors,
	         Range<const float> tetherLengths, Range<const uint32_t> triangles, uint32_t id);

	virtual ~CuFabric();

	virtual Factory& getFactory() const;

	virtual uint32_t getNumPhases() const;
	virtual uint32_t getNumRestvalues() const;
	virtual uint32_t getNumStiffnessValues() const;

	virtual uint32_t getNumSets() const;
	virtual uint32_t getNumIndices() const;

	virtual uint32_t getNumParticles() const;

	virtual uint32_t getNumTethers() const;

	virtual uint32_t getNumTriangles() const;

	virtual void scaleRestvalues(float);
	virtual void scaleTetherLengths(float);

public:
	CuFactory& mFactory;

	uint32_t mNumParticles;

	CuDeviceVector<uint32_t> mPhases; // index of set to use
	CuDeviceVector<uint32_t> mSets;   // offset of first restvalue, with 0 prefix

	CuDeviceVector<float> mRestvalues;
	CuDeviceVector<float> mStiffnessValues;
	CuDeviceVector<uint16_t> mIndices;

	CuDeviceVector<CuTether> mTethers;
	float mTetherLengthScale;

	CuDeviceVector<uint16_t> mTriangles;

	Vector<uint32_t>::Type mNumConstraintsInPhase;
	Vector<CuDevicePointer<const float> >::Type mRestvaluesInPhase;
	Vector<CuDevicePointer<const float> >::Type mStiffnessValuesInPhase;
	Vector<CuDevicePointer<const uint16_t> >::Type mIndicesInPhase;

	uint32_t mId;
};
}
}