extern crate cgmath;
use cgmath::*;
#[test]
fn test_line_intersection() {
let r1 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(0.25, 0.0));
let l1 = Line::new(Point2::new(1.5f32, 0.0), Point2::new(0.5, 0.0));
assert_eq!((r1, l1).intersection(), Some(Point2::new(0.5, 0.0)));
let r2 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(5.0, 0.0));
let l2 = Line::new(Point2::new(-11.0f32, 0.0), Point2::new(1.0, 0.0));
assert_eq!((r2, l2).intersection(), Some(Point2::new(0.0, 0.0)));
let r3 = Ray::new(Point2::new(0.0f32, 1.0), Vector2::new(0.0, -0.25));
let l3 = Line::new(Point2::new(0.0f32, 0.5), Point2::new(0.0, -0.5));
assert_eq!((r3, l3).intersection(), Some(Point2::new(0.0, 0.5)));
let r4 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(3.0, 0.0));
let l4 = Line::new(Point2::new(-10.0f32, 0.0), Point2::new(-5.0, 0.0));
assert_eq!((r4, l4).intersection(), None);
let r5 = Ray::new(Point2::new(5.0f32, 5.0), Vector2::new(40.0, 8.0));
let l5 = Line::new(Point2::new(5.0f32, 4.8), Point2::new(10.0, 4.1));
assert_eq!((r5, l5).intersection(), None);
let r6 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(10.0, 10.0));
let l6 = Line::new(Point2::new(0.0f32, 10.0), Point2::new(10.0, 0.0));
assert_eq!((r6, l6).intersection(), Some(Point2::new(5.0, 5.0)));
let r7 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(1.0, 1.0));
let l7 = Line::new(Point2::new(1.0f32, 0.0), Point2::new(1.0, 0.0));
assert_eq!((r7, l7).intersection(), None);
let r8 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(1.0, 0.0));
let l8 = Line::new(Point2::new(3.0f32, 0.0), Point2::new(3.0, 0.0));
assert_eq!((r8, l8).intersection(), Some(Point2::new(3.0, 0.0)));
let r9 = Ray::new(Point2::new(0.0f32, 0.0), Vector2::new(1.0, 0.0));
let l9 = Line::new(Point2::new(-1.0f32, 0.0), Point2::new(-1.0, 0.0));
assert_eq!((r9, l9).intersection(), None);
}