Ray strikes cone test fails

Hi,

I'm implementing cones, and I can't seem to figure out why the ray strikes cone (normal and parallel) tests fail.

My intersect function is here:

github.com/txus/rye/blob/master/src/shapes.rs#L509-L553

My test output shows the tests are failing this way:

---- shapes::tests::cone::ray_strikes_cone stdout ----
thread 'shapes::tests::cone::ray_strikes_cone' panicked at 'assertion failed: `(left == right)`
 left: `[]`,
right: `[8.66025, 8.66025]`', src/shapes.rs:1026:17
note: Run with `RUST_BACKTRACE=1` environment variable to display a backtrace.

---- shapes::tests::cone::ray_strikes_cone_parallel_to_one_of_its_halves stdout ----
thread 'shapes::tests::cone::ray_strikes_cone_parallel_to_one_of_its_halves' panicked at 'assertion failed: `(left == right)`
 left: `[0.70710677]`,
right: `[0.35355]`', src/shapes.rs:1037:13
I've tried to look at other people's implementations, but still can't figure it out