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add indexed setter for quat

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Ryan Oldenburg 2020-03-17 16:20:33 -05:00
parent b1f828ad55
commit a81545eb97
1 changed files with 11 additions and 0 deletions
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src/vmath.nim
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@ -1191,6 +1191,17 @@ proc `*`*(q: Quat, v: Vec3): Vec3 =
result.y = iy * qw + iw * -qy + iz * -qx - ix * -qz result.y = iy * qw + iw * -qy + iz * -qx - ix * -qz
result.z = iz * qw + iw * -qz + ix * -qy - iy * -qx result.z = iz * qw + iw * -qz + ix * -qy - iy * -qx
proc `[]=`*(a: var Quat, i: int, b: float32) =
assert(i == 0 or i == 1 or i == 2 or i == 3)
if i == 0:
a.x = b
elif i == 1:
a.y = b
elif i == 2:
a.z = b
elif i == 3:
a.w = b
proc mat3*(q: Quat): Mat3 = proc mat3*(q: Quat): Mat3 =
var xx = q.x * q.x var xx = q.x * q.x
var xy = q.x * q.y var xy = q.x * q.y