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/* ----------------------------------------------------------------------- *
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 * This file is part of GEL, http://www.imm.dtu.dk/GEL
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 * Copyright (C) the authors and DTU Informatics
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 * For license and list of authors, see ../../doc/intro.pdf
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 * ----------------------------------------------------------------------- */
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/**
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 * @file AABox.h
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 * @brief Axis aligned bounding box class.
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 */
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#ifndef __GEOMETRY_AABOX__H
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#define __GEOMETRY_AABOX__H
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#include <iostream>
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#include <vector>
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#include "Triangle.h"
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namespace Geometry
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{
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  const float DIST_THRESH = 5.0e-4f;
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  class AABox
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  {
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	CGLA::Vec3f pmin, pmax, interior_point;
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  public:
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	AABox() {}
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	AABox(const CGLA::Vec3f& _pmin, const CGLA::Vec3f& _pmax,
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		  const CGLA::Vec3f& _interior_point):
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	pmin(_pmin), pmax(_pmax), interior_point(_interior_point)
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	{
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      for(int i=0;i<3;++i)
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		if((pmax[i]-pmin[i]) < DIST_THRESH)
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		{
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			pmax[i] += DIST_THRESH/2.0f;
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			pmin[i] -= DIST_THRESH/2.0f;
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		}
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	  assert(pmin.all_le(interior_point));
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	  assert(pmax.all_ge(interior_point));
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	}
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	const CGLA::Vec3f& get_pmin() const {return pmin;}
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	const CGLA::Vec3f& get_pmax() const {return pmax;}
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	bool intersect(const CGLA::Vec3f&, const CGLA::Vec3f&) const;
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	void minmax_sq_dist(const CGLA::Vec3f& p, float& dmin, float& dmax) const;
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	static AABox box_triangle(const Triangle&);
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	static AABox box_and_split(const std::vector<Triangle>& invec,
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							   std::vector<Triangle>& lvec,
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							   std::vector<Triangle>& rvec);
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  };
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}
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#endif