neviyn/raytracer_nim
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neviyn 2020-07-21 13:49:33 +01:00
parent 733838778a
commit 464401781e
1 changed files with 1 additions and 3 deletions
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src/tuple.nim
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@ -22,9 +22,7 @@ proc normalize*(tup: Tuple4): Tuple4 =
let mag = tup.magnitude()
Tuple4(x: tup.x / mag, y: tup.y / mag, z: tup.z / mag, w: tup.w / mag)
proc dot*(lhs: Tuple4, rhs: Tuple4): float = lhs.x * rhs.x + lhs.y * rhs.y + lhs.z * rhs.z + lhs.w * rhs.w
proc cross*(lhs: Tuple4, rhs: Tuple4): Tuple4 = vector(lhs.y * rhs.z - lhs.z * rhs. y,
lhs.z * rhs.x - lhs.x * rhs.z,
lhs.x * rhs.y - lhs.y * rhs.x)
proc cross*(lhs: Tuple4, rhs: Tuple4): Tuple4 = vector(lhs.y * rhs.z - lhs.z * rhs.y, lhs.z * rhs.x - lhs.x * rhs.z, lhs.x * rhs.y - lhs.y * rhs.x)
when isMainModule:
import unittest