/******************************************************************************
	libx42pp - skinned vertex animation library (C++ API)
	Copyright (C) 2007 HermitWorks Entertainment Corporation

	This program is free software; you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the Free
	Software Foundation; either version 2 of the License, or (at your option)
	any later version.

	This program is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
	or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
	for more details.

	You should have received a copy of the GNU General Public License along
	with this program; if not, write to the
	
		Free Software Foundation, Inc.
		51 Franklin Street, Fifth Floor
		Boston, MA  02110-1301, USA.
******************************************************************************/

#include "local.h"

namespace x42
{
namespace geom
{

aabb aabb::operator | ( const vec3 &v ) const
{
	aabb ret = *this;
	ret |= v;

	return ret;
}
aabb& aabb::operator |= ( const vec3 &v )
{
	if( is_empty() )
	{
		mins = v;
		maxs = v;
	}
	else
	{
		mins = min( mins, v );
		maxs = max( maxs, v );
	}

	return *this;
}

aabb aabb::operator | ( const aabb &b ) const
{
	aabb ret = *this;
	ret |= b;

	return ret;
}
aabb& aabb::operator |= ( const aabb &b )
{
	if( is_empty() )
	{
		mins = b.mins;
		maxs = b.maxs;
	}
	else if( !b.is_empty() )
	{
		mins = min( mins, b.mins );
		maxs = max( maxs, b.maxs );
	}
	//else *this = *this
	
	return *this;
}

aabb aabb::operator & ( const aabb &b ) const
{
	aabb ret = *this;
	ret &= b;

	return ret;
}
aabb& aabb::operator &= ( const aabb &b )
{
	if( is_empty() || b.is_empty() )
	{
		*this = aabb::empty();
	}
	else
	{
		mins = max( mins, b.mins );
		maxs = min( maxs, b.maxs );
	}

	return *this;
}

bool aabb::is_empty( void ) const
{
	return
		mins.x > maxs.x ||
		mins.y > maxs.y ||
		mins.z > maxs.z;
}

bool aabb::contains( const vec3 &v ) const
{
	return
		(mins.x <= v.x && maxs.x >= v.x) &&
		(mins.y <= v.y && maxs.y >= v.y) &&
		(mins.z <= v.z && maxs.z >= v.z);
}

};
};