mazth 0.6.0

Matrix utilities.
Documentation 
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use i_comparable::IComparableError;
use i_shape::IShape;

use sphere::Sphere;

use mat::Mat3x1;

#[test]
fn test_intersect_sphere_sphere() {
    //Sphere Sphere intersection
    {
        let a = Sphere::init(&[10f64, 0f64, 0f64], 5f64);
        let b = Sphere::init(&[20f64, 0f64, 0f64], 5f64);
        match a.get_intersect(&b) {
            (true, Some(loc)) => {
                assert!(loc
                    .is_equal(
                        &Mat3x1 {
                            _val: [15f64, 0f64, 0f64]
                        },
                        0.0001f64
                    )
                    .unwrap());
            }
            _ => panic!("unexpected result for ray sphere intersection"),
        }
    }
    //Sphere Sphere intersection
    {
        let a = Sphere::init(&[10f64, 0f64, 0f64], 5f64);
        let b = Sphere::init(&[13f64, 4f64, 0f64], 5f64);
        match a.get_intersect(&b) {
            (true, Some(loc)) => {
                println!("loc: {:?}", loc);
                assert!(loc
                    .is_equal(
                        &Mat3x1 {
                            _val: [11.5f64, 2f64, 0f64]
                        },
                        0.0001f64
                    )
                    .unwrap());
            }
            _ => panic!("unexpected result for ray sphere intersection"),
        }
    }

    //Sphere Sphere no intersection
    {
        let a = Sphere::init(&[10f64, 0f64, 0f64], 5f64);
        let b = Sphere::init(&[20f64, 0.1f64, 0f64], 5f64);
        match a.get_intersect(&b) {
            (false, None) => (),
            _ => panic!("unexpected result for ray sphere intersection"),
        }
    }
}