typedef struct vector $\{$

double arr$[4]$;

$\}$ vector;

typedef vector point;

typedef struct polygon $\{$

int num$\_$points;

point $**$point$\_$arr;

unsigned char r;

unsigned char g;

unsigned char b;

$\}$ polygon;

typedef struct object $\{$

point location;

matrix orientation;

int num$\_$polygons;

int num$\_$points;

polygon $*$polygons;

point $*$points;

$\}$ object;