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595 jab 1 
/* ----------------------------------------------------------------------- *
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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 Grid2D.h
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 * @brief A simple 2D grid template that is often useful.
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 */
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#ifndef __UTIL_GRID2D_H
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#define __UTIL_GRID2D_H
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#include <vector>
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#include "../CGLA/Vec2i.h"
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namespace Util
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{
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	template<class T>
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	class Grid2D
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	{
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		int XDIM, YDIM;
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		std::vector<T> pixels;
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	public:
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		~Grid2D() {}
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		Grid2D(int i, int j, const T& val): XDIM(i), YDIM(j), pixels(i*j, val) {}
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		Grid2D(int i, int j): XDIM(i), YDIM(j), pixels(i*j) {}
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		Grid2D(): XDIM(0), YDIM(0) {}
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		void resize(int i, int j)
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				{
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						XDIM = i;
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						YDIM = j;
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						pixels.resize(i*j);
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				}
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		const T& operator()(int i, int j) const
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		{
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		  assert(i>=0 && i< XDIM);
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		  assert(j>=0 && j< YDIM);
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		  return pixels[j*XDIM+i];
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		}
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		T& operator()(int i, int j)
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		{
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		  assert(i>=0 && i< XDIM);
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		  assert(j>=0 && j< YDIM);
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		  return pixels[j*XDIM+i];
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		}
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		const T& operator()(const CGLA::Vec2i& p) const
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		{
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		  assert(p[0]>=0 && p[0]< XDIM);
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		  assert(p[1]>=0 && p[1]< YDIM);
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		  return pixels[p[1]*XDIM+p[0]];
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		}
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		T& operator()(const CGLA::Vec2i& p)
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		{
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		  assert(p[0]>=0 && p[0]< XDIM);
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		  assert(p[1]>=0 && p[1]< YDIM);
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		  return pixels[p[1]*XDIM+p[0]];
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		}
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		int get_xdim() const {return XDIM;}
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		int get_ydim() const {return YDIM;}
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	};
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}
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#endif