use i_comparable::IComparableError;
use i_shape::IShape;

use point::Point3;
use ray::Ray3;

#[test]
fn test_intersect_ray_point() {
    //ray point intersection
    {
        let a = Ray3::init(&[20f64, 0f64, 0f64], &[1f64, 1f64, 1f64]);
        let b = Point3::init(&[25f64, 5f64, 5f64]);
        match a.get_intersect(&b) {
            (true, Some(loc)) => {
                assert!(loc.is_equal(&b._ori, 0.0001f64).unwrap());
            }
            _ => panic!("unexpected result for ray point intersection"),
        }
    }
    //ray point no intersection, point behind ray origin and direction
    {
        let a = Ray3::init(&[20f64, 0f64, 0f64], &[1f64, 1f64, 1f64]);
        let b = Point3::init(&[15f64, -5f64, -5f64]);
        match a.get_intersect(&b) {
            (false, None) => (),
            _ => panic!("unexpected result for ray point no intersection, point behind ray"),
        }
    }
    //ray point no intersection
    {
        let a = Ray3::init(&[20f64, 0f64, 0f64], &[1f64, 1f64, 1f64]);
        let b = Point3::init(&[25f64, 5f64, 5.1f64]);
        match a.get_intersect(&b) {
            (false, None) => (),
            _ => panic!("unexpected result for ray point no intersection"),
        }
    }

    //repeat the above tests but invoking the method on point
    //ray point intersection
    {
        let a = Ray3::init(&[20f64, 0f64, 0f64], &[1f64, 1f64, 1f64]);
        let b = Point3::init(&[25f64, 5f64, 5f64]);
        match b.get_intersect(&a) {
            (true, Some(loc)) => {
                assert!(loc.is_equal(&b._ori, 0.0001f64).unwrap());
            }
            _ => panic!("unexpected result for ray point intersection"),
        }
    }
    //ray point no intersection, point behind ray origin and direction
    {
        let a = Ray3::init(&[20f64, 0f64, 0f64], &[1f64, 1f64, 1f64]);
        let b = Point3::init(&[15f64, -5f64, -5f64]);
        match b.get_intersect(&a) {
            (false, None) => (),
            _ => panic!("unexpected result for ray point no intersection, point behind ray"),
        }
    }
    //ray point no intersection
    {
        let a = Ray3::init(&[20f64, 0f64, 0f64], &[1f64, 1f64, 1f64]);
        let b = Point3::init(&[25f64, 5f64, 5.1f64]);
        match b.get_intersect(&a) {
            (false, None) => (),
            _ => panic!("unexpected result for ray point no intersection"),
        }
    }
}