/* Copyright (c) <2003-2011> <Julio Jerez, Newton Game Dynamics>
* 
* This software is provided 'as-is', without any express or implied
* warranty. In no event will the authors be held liable for any damages
* arising from the use of this software.
* 
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
* 
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software. If you use this software
* in a product, an acknowledgment in the product documentation would be
* appreciated but is not required.
* 
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 
* 3. This notice may not be removed or altered from any source distribution.
*/

#include "dgPhysicsStdafx.h"
#include "dgBody.h"
#include "dgWorld.h"
#include "dgCollision.h"

//dgInitRtti(dgCollision);

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
dgCollision::dgCollision(dgMemoryAllocator* const allocator, dgUnsigned32 signature, const dgMatrix& matrix, dgCollisionID id)
//	:dgRef() 
{
	m_rtti = 0;
	m_refCount = 1;
	m_userDataID = 0;
	m_collsionId = id;
	m_signature = signature;
	m_allocator = allocator;
//	m_maxDistanceTravel = dgFloat32 (0.0f);
//	m_omegaDistanceBound = dgFloat32 (0.0f);
	SetOffsetMatrix (matrix);
}

dgCollision::dgCollision (dgWorld* const world, dgDeserialize deserialization, void* const userData)
{
	dgInt32 signature[4];
	deserialization (userData, &signature, sizeof (signature));
	deserialization (userData, &m_offset, sizeof (dgMatrix));
	
	m_rtti = 0;
	m_refCount = 1;
	m_signature = dgUnsigned32 (signature[0]);
	m_userDataID = dgUnsigned32 (signature[2]);
	m_allocator = world->GetAllocator();
	m_collsionId = dgCollisionID (signature[1]);
}

dgCollision::~dgCollision()
{
}

dgUnsigned32 dgCollision::Quantize(dgFloat32 value)
{
	return dgUnsigned32 (value * 1024.0f);
}

dgUnsigned32 dgCollision::MakeCRC(void *buffer, int size)
{
	dgUnsigned32 crc;

	crc = dgCRC (buffer, size);
	return crc;
}


void dgCollision::SetOffsetMatrix (const dgMatrix& matrix)
{
	m_offset = matrix;
	m_offset[0][3] = dgFloat32 (0.0f);
	m_offset[1][3] = dgFloat32 (0.0f);
	m_offset[2][3] = dgFloat32 (0.0f);
	m_offset[3][3] = dgFloat32 (1.0f);

#ifdef _DEBUG
	dgFloat32 det;
	det = (m_offset.m_front * m_offset.m_up) % m_offset.m_right;
	_ASSERTE (det > dgFloat32 (0.999f));
	_ASSERTE (det < dgFloat32 (1.001f));
#endif
}


void* dgCollision::GetUserData () const
{
	return NULL;
}

void dgCollision::SetUserData (void* const userData)
{
}


void dgCollision::GetCollisionInfo(dgCollisionInfo* info) const
{
//	memset (info, 0, sizeof (dgCollisionInfo));
	info->m_offsetMatrix = dgGetIdentityMatrix();
	info->m_collisionType = m_collsionId;
	info->m_refCount = GetRefCount();
	info->m_userDadaID = dgInt32 (SetUserDataID());
}

void dgCollision::SerializeLow (dgSerialize callback, void* const userData) const
{
	dgInt32 signature[4];
	signature[0] = dgInt32 (GetSignature ());
	signature[1] = GetCollisionPrimityType ();
	signature[2] = dgInt32 (SetUserDataID());
	signature[3] = 0;

	callback (userData, &signature, sizeof (signature));
	callback (userData, &m_offset, sizeof (dgMatrix));
}

/*
void dgCollision::Serialize(dgSerialize callback, void* const userData) const
{
	_ASSERTE (0);
}
*/