I am writing a javascript program and I want to be able to store function calls that create 3D objects inside of an array. I want to be able to put 

```
draw_cylinder(0,0,3,2);
draw_sphere(0,0,5,3);
draw_cone(17,0,7,3);
draw_cube(-1,-1,2, 1,1,3);

```

into array `shapes[]` and then eventually run the program and have each function be called from the array.