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

#pragma once

#include "StackAllocator.h"
#include <foundation/Px.h>
#include "Simd.h"

namespace nv
{
namespace cloth
{

class SwCloth;
struct SwClothData;

typedef StackAllocator<16> SwKernelAllocator;

template <typename T4f>
class SwSelfCollision
{
	typedef typename Simd4fToSimd4i<T4f>::Type Simd4i;

  public:
	SwSelfCollision(SwClothData& clothData, SwKernelAllocator& alloc);
	~SwSelfCollision();

	void operator()();

	static size_t estimateTemporaryMemory(const SwCloth&);

  private:
	SwSelfCollision& operator = (const SwSelfCollision&); // not implemented
	static size_t getBufferSize(uint32_t);

	template <bool useRestParticles>
	void collideParticles(T4f&, T4f&, const T4f&, const T4f&);

	template <bool useRestParticles>
	void collideParticles(const uint32_t*, uint16_t, const uint16_t*, uint32_t);

	T4f mCollisionDistance;
	T4f mCollisionSquareDistance;
	T4f mStiffness;

	SwClothData& mClothData;
	SwKernelAllocator& mAllocator;

  public:
	mutable uint32_t mNumTests;
	mutable uint32_t mNumCollisions;
};

//explicit template instantiation declaration
#if NV_SIMD_SIMD
extern template class SwSelfCollision<Simd4f>;
#endif
#if NV_SIMD_SCALAR
extern template class SwSelfCollision<Scalar4f>;
#endif


} // namespace cloth

} // namespace nv