#ifndef COORD_H
#define COORD_H

#include <stdint.h>

typedef struct coord
{
  uint16_t x; /* 16 bits should be enough (65536 pixels) */
  uint16_t y;
} coord_t;

#define SET_COORD( coord, cx, cy ) \
  ({ (coord).x = (cx); (coord).y = (cy); })

typedef struct rect
{
  coord_t p0;
  coord_t p1;
} rect_t;

#define SET_RECT( rect, cx, cy, cw, ch ) \
  ({ SET_COORD( (rect).p0, (cx), (cy) ); SET_COORD( (rect).p1, (cw), (ch) ); })


/**
 * Converts a pair ( x, y ) to a linear coordinate, given the rectangle is
 * 'width' units large.
 */
#define QUAD_TO_LIN( width, x, y )  ( (x) + (y) * (width) )


typedef struct coord3d
{
  uint16_t x;
  uint16_t y;
  uint16_t z;
} coord3d_t;

#define SET_COORD3D( coord, cx, cy, cz ) \
  ({ (coord).x = (cx); (coord).y = (cy); (coord).z = (cz); })

/**
 * Converts a triple ( x, y, z ) to a linear coordinate, given the
 * parallelogram is 'w' units large and 'h' units height
 */
#define CUB_TO_LIN( w, h, x, y, z ) ( (x) + (y) * (w) + (z) * (w) * (h) )


#endif /* COORD_H */