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Fix #2389

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This commit is contained in:
Mostafa Saad
2023-03-17 00:29:50 +02:00
parent bfb231fb8a
commit 5fdc9fa3b6
1 changed files with 4 additions and 4 deletions
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8
core/math/linalg/extended.odin
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@@ -429,11 +429,11 @@ reflect :: proc(I, N: $T) -> (out: T) where IS_ARRAY(T), IS_FLOAT(ELEM_TYPE(T))
b := N * (2 * dot(N, I))
return I - b
}
refract :: proc(I, N: $T) -> (out: T) where IS_ARRAY(T), IS_FLOAT(ELEM_TYPE(T)) {
dv := dot(N, I)
k := 1 - eta*eta - (1 - dv*dv)
refract :: proc(I, Normal: $V/[$N]$E, eta: E) -> (out: V) where IS_ARRAY(V), IS_FLOAT(ELEM_TYPE(V)) {
dv := dot(Normal, I)
k := 1 - eta*eta * (1 - dv*dv)
a := I * eta
b := N * eta*dv*math.sqrt(k)
b := Normal * (eta*dv+math.sqrt(k))
return (a - b) * E(int(k >= 0))
}