mirror of
https://github.com/codeninjasllc/codecombat.git
synced 2024-11-29 02:25:37 -05:00
82 lines
2.7 KiB
CoffeeScript
82 lines
2.7 KiB
CoffeeScript
|
describe 'Rectangle', ->
|
||
|
|
Rectangle = require 'lib/world/rectangle'
|
||
|
|
Vector = require 'lib/world/vector'
|
||
|
|
|
||
|
|
it 'contains its own center', ->
|
||
|
|
rect = new Rectangle 0, 0, 10, 10
|
||
|
|
expect(rect.containsPoint(new Vector 0, 0)).toBe true
|
||
|
|
|
||
|
|
it 'contains a point when rotated', ->
|
||
|
|
rect = new Rectangle 0, -20, 40, 40, 3 * Math.PI / 4
|
||
|
|
p = new Vector 0, 2
|
||
|
|
expect(rect.containsPoint(p, true)).toBe true
|
||
|
|
|
||
|
|
it 'correctly calculates distance to a faraway point', ->
|
||
|
|
rect = new Rectangle 100, 50, 20, 40
|
||
|
|
p = new Vector 200, 300
|
||
|
|
d = 10 * Math.sqrt(610)
|
||
|
|
expect(rect.distanceToPoint(p)).toBeCloseTo d
|
||
|
|
rect.rotation = Math.PI / 2
|
||
|
|
d = 80 * Math.sqrt(10)
|
||
|
|
expect(rect.distanceToPoint(p)).toBeCloseTo d
|
||
|
|
|
||
|
|
it 'does not modify itself or target Vector when calculating distance', ->
|
||
|
|
rect = new Rectangle -100, -200, 1, 100
|
||
|
|
rect2 = rect.copy()
|
||
|
|
p = new Vector -100.25, -101
|
||
|
|
p2 = p.copy()
|
||
|
|
rect.distanceToPoint(p)
|
||
|
|
expect(p.x).toEqual p2.x
|
||
|
|
expect(p.y).toEqual p2.y
|
||
|
|
expect(rect.x).toEqual rect2.x
|
||
|
|
expect(rect.y).toEqual rect2.y
|
||
|
|
expect(rect.width).toEqual rect2.width
|
||
|
|
expect(rect.height).toEqual rect2.height
|
||
|
|
expect(rect.rotation).toEqual rect2.rotation
|
||
|
|
|
||
|
|
it 'correctly calculates distance to contained point', ->
|
||
|
|
rect = new Rectangle -100, -200, 1, 100
|
||
|
|
rect2 = rect.copy()
|
||
|
|
p = new Vector -100.25, -160
|
||
|
|
p2 = p.copy()
|
||
|
|
expect(rect.distanceToPoint(p)).toBe 0
|
||
|
|
rect.rotation = 0.00000001 * Math.PI
|
||
|
|
expect(rect.distanceToPoint(p)).toBe 0
|
||
|
|
|
||
|
|
it 'has predictable vertices', ->
|
||
|
|
rect = new Rectangle 50, 50, 100, 100
|
||
|
|
v = rect.vertices()
|
||
|
|
expect(v[0].x).toEqual 0
|
||
|
|
expect(v[0].y).toEqual 0
|
||
|
|
expect(v[1].x).toEqual 0
|
||
|
|
expect(v[1].y).toEqual 100
|
||
|
|
expect(v[2].x).toEqual 100
|
||
|
|
expect(v[2].y).toEqual 100
|
||
|
|
expect(v[3].x).toEqual 100
|
||
|
|
expect(v[3].y).toEqual 0
|
||
|
|
|
||
|
|
it 'has predictable vertices when rotated', ->
|
||
|
|
rect = new Rectangle 50, 50, 100, 100, Math.PI / 4
|
||
|
|
v = rect.vertices()
|
||
|
|
d = (Math.sqrt(2 * 100 * 100) - 100) / 2
|
||
|
|
expect(v[0].x).toBeCloseTo -d
|
||
|
|
expect(v[0].y).toBeCloseTo 50
|
||
|
|
expect(v[1].x).toBeCloseTo 50
|
||
|
|
expect(v[1].y).toBeCloseTo 100 + d
|
||
|
|
expect(v[2].x).toBeCloseTo 100 + d
|
||
|
|
expect(v[2].y).toBeCloseTo 50
|
||
|
|
expect(v[3].x).toBeCloseTo 50
|
||
|
|
expect(v[3].y).toBeCloseTo -d
|
||
|
|
|
||
|
|
it 'is its own AABB when not rotated', ->
|
||
|
|
rect = new Rectangle 10, 20, 30, 40
|
||
|
|
aabb = rect.axisAlignedBoundingBox()
|
||
|
|
for prop in ["x", "y", "width", "height"]
|
||
|
|
expect(rect[prop]).toBe aabb[prop]
|
||
|
|
|
||
|
|
it 'is its own AABB when rotated 180', ->
|
||
|
|
rect = new Rectangle 10, 20, 30, 40, Math.PI
|
||
|
|
aabb = rect.axisAlignedBoundingBox()
|
||
|
|
for prop in ["x", "y", "width", "height"]
|
||
|
|
expect(rect[prop]).toBe aabb[prop]
|