Post by danylo on Jan 26, 2020 16:56:26 GMT
Hello there!
Currently I'm on Ch. 5 and trying to implement this test:
Scenario: Intersecting a scaled sphere with a ray
Given r ← ray(point(0, 0, -5), vector(0, 0, 1))
And s ← sphere()
When set_transform(s, scaling(2, 2, 2))
And xs ← intersect(s, r)
Then xs.count = 2
And xs[0].t = 3
And xs[1].t = 7
The problem is - both of answers I get are exactly half of expected. So xs[0].t = 1.5 and xs[1].t = 3.5
Every other test I've implemented before works correctly. Is there a book mistake, or I should check the code?
Currently I'm on Ch. 5 and trying to implement this test:
Scenario: Intersecting a scaled sphere with a ray
Given r ← ray(point(0, 0, -5), vector(0, 0, 1))
And s ← sphere()
When set_transform(s, scaling(2, 2, 2))
And xs ← intersect(s, r)
Then xs.count = 2
And xs[0].t = 3
And xs[1].t = 7
The problem is - both of answers I get are exactly half of expected. So xs[0].t = 1.5 and xs[1].t = 3.5
Every other test I've implemented before works correctly. Is there a book mistake, or I should check the code?