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ECS 175 Fall 2019 - Assignment 2 Manual
Author: lxylxy123456 (https://github.com/lxylxy123456/)

Run: run the following line, make sure `test_scene` is in same directory
    ./Project2

Specify scene file: the following command uses `bunny_scene` as scene file
	./Project2 bunny_scene

The layout of the screen follows the one given by test file:
	upper left is project to XY plane
		horizontal: x
		vertical: y
	upper right is project to YZ plane
		horizontal: x
		vertical: z
	lower left is project to XZ plane
		horizontal: y
		vertical: z

All interactions can be done by simply looking at the stdout output.
(So basically no need to read README any more)

Each time when anything (even hidden object) goes outside the bounding box, the
 program will ask whether a bounding box should be used, by printing this:

	Something is going out of [0, 1] x [0, 1] x [0, 1]
	Use bounding box to view the entire scene?
	0 = NO, 1 = YES: 

Simply enter 0 or 1 to either not use or use the bounding box.

To transform the objects on the screen, first enter operation code as an integer
 1. Show / hide polyhedra
 2. Translation
 3. Rotate
 4. Scale
 0. Quit

1. Show / hide polyhedra
	Then enter ID of polyhedra to show / hide. Numbering start at 0
	For example, hide / show polyhedra 3:
		3

2. Translation
	Then enter ID of polyhedra to translate and a translation vector as 3
	floating point numbers.
	For example, translate polyhedra 0 by vector (0.1, 0.2, 0.3):
		0
		0.1 0.2 0.3

3. Rotate
	Then enter ID of polyhedra, translation line's start and end point, and
	rotation angle. 
	For example, rotate polyhedra 1 w.r.t line (0.1, 0.2, 0.3) ->
	(0.4, 0.5, 0.6) by 30 degrees:
		1
		0.1 0.2 0.3
		0.4 0.5 0.6
		30

4. Scale
	Then enter ID of polyhedra, and scaling factor
	For example, scale polyhedra 2 by 2.5:
		2
		2.5

5. Animation
	./yaki_rabbit.sh
	./camera.py
	./HCC.py
	./rotate.py

0. Quit
	Bye