#ifndef _Box_hpp_

#define _Box_hpp_

/**

* a 'Box' is 3 pairs of ints, where each pair specifies a lower

* and upper bound for one of the 3 spatial dimensions.

*

* This struct stores the 3 pairs as a simple array of 6 ints,

* but defines the bracket operator so that it can be referenced

* using 2-dimensional array notation like this:

* int xmin = box[0][0]; int xmax = box[0][1];

* int ymin = box[1][0]; int ymax = box[1][1];

* int zmin = box[2][0]; int zmax = box[2][1];

*/

struct Box {

int ranges[6];

int* operator[](int xyz) { return &ranges[xyz*2]; }

const int* operator[](int xyz) const { return &ranges[xyz*2]; }

};

#endif