HW_4 Grading Scheme

Static Transformations:
  - program properly reads an external object definition (tested by
    correct rendering of a simple object with no transformations) (10)

  - handles and renders object with a single static translation (10)
  - handles and renders object with a single static rotation (10)
  - handles and renders object with a combined static translation and
    rotation (10)
  - ball interacts with static objects properly (10)

Dynamic Transformations:

  - handles and renders object with a combined static translation and
    rotation (10)
  - ball intersects properly with dynamic objects (15)
  - dynamic objects intersects properly with ball (15)
  - system waits to clear balls from dynamic objects path (10)