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@@ -245,7 +245,7 @@ quat = {
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mul = function(q, r, out)
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out = out or q
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local qx, qy, qz, qw = q:unpack()
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- local rx, ry, rz, rw = q:unpack()
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+ local rx, ry, rz, rw = r:unpack()
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out.x = qx * rw + qw * rx - qy * rz - qz * ry
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out.y = qy * rw + qw * ry - qz * rx - qx * rz
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out.z = qz * rw + qw * rz - qx * ry - qy * rx
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bjorn