1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
package sims.test
import org.scalatest.FlatSpec
import org.scalatest.matchers.ShouldMatchers
import sims.math._
import sims.collision._
class LinearOverlapTest extends FlatSpec with ShouldMatchers {
"A segment" should "throw IllegalArgumentException if both of its " +
"vertices degenerate into a single one" in {
evaluating { val s1 = Segment(Vector2D(0,0), Vector2D(0,0)) } should produce [IllegalArgumentException]
}
it should "not intersect with itself" in {
val s1 = Segment(Vector2D(2, 2), Vector2D(3, 5))
s1 intersection s1 should equal (None)
}
"Two segments" should "have an intersection point if they intersect" in {
val s1 = Segment(Vector2D(0, 0), Vector2D(3, 1))
val s2 = Segment(Vector2D(0, 1), Vector2D(3, -2))
s1 intersection s2 should not equal (None)
}
it should "have an intersection point if they share a vertice" in {
val s1 = Segment(Vector2D(1, 2), Vector2D(3, 1))
val s2 = Segment(Vector2D(3, 1), Vector2D(3, -2))
s1 intersection s2 should not equal (None)
}
it should "have an intersection point if one contains one of the other's vertices" in {
val s1 = Segment(Vector2D(2, 4), Vector2D(3, 100))
val s2 = Segment(Vector2D(1, 3), Vector2D(3, 5))
s1 intersection s2 should not equal (None)
}
it should "not have an intersection point if they are parallel" in {
val s1 = Segment(Vector2D(0, 0), Vector2D(3, 1))
val s2 = Segment(Vector2D(0, 1), Vector2D(3, 2))
s1 intersection s2 should equal (None)
}
it should "not have an intersection point if they are parallel and lie on each other" in {
val s1 = Segment(Vector2D(2, 2), Vector2D(6, 6))
val s2 = Segment(Vector2D(3, 3), Vector2D(4, 4))
s1 intersection s2 should equal (None)
}
"A ray and a segment" should "have an intersection point if they intersect" in {
val r1 = Ray(Vector2D(3, 5), Vector2D(3, -1))
val s1 = Segment(Vector2D(6.32, math.sqrt(4.0)), Vector2D(10, 15.5))
r1 intersection s1 should not equal (None)
}
it should "have an intersection point if they share a vertice" in {
val r1 = Ray(Vector2D(3, 4), Vector2D(2, 1))
val s1 = Segment(Vector2D(0, 10), Vector2D(3, 4))
r1 intersection s1 should not equal (None)
}
it should "have an intersection point if the ray contains one of the segment's vertices" in {
val r1 = Ray(Vector2D(0, 0), Vector2D(1, 2))
val s1 = Segment(Vector2D(2, 4), Vector2D(5, 4))
r1 intersection s1 should not equal (None)
}
it should "have an intersection point if the segment contains the ray's vertice" in {
val r1 = Ray(Vector2D(0, math.Pi), Vector2D(1, 2))
val s1 = Segment(Vector2D(0, 0), Vector2D(0, 4))
r1 intersection s1 should not equal (None)
val r2 = Ray(Vector2D(2, 3), Vector2D(-2, -1))
val s2 = Segment(Vector2D(0, 4), Vector2D(4, 2))
r2 intersection s2 should not equal (None)
}
it should "not have an intersection point if they are parallel" in {
val r1 = Ray(Vector2D(2, 3), Vector2D(3, 4))
val s1 = Segment(Vector2D(1, 4), Vector2D(4, 8))
r1 intersection s1 should equal (None)
}
it should "not have an intersection point if they lie on each other" in {
val r1 = Ray(Vector2D(0, 1), Vector2D(2, 3))
val s1 = Segment(Vector2D(-1, 0), Vector2D(4, 4))
r1 intersection s1 should equal (None)
}
}
|
