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made sin use rads instead of deg

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This commit is contained in:
Maik Wild 2018-09-28 17:28:01 +02:00
parent 7e0194996d
commit b01cef726b
1 changed files with 4 additions and 4 deletions
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8
utils/math_fix.lua
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@ -1,9 +1,9 @@
local _sin = math.sin local tau = 2 * math.pi
local _cos = math.cos local half_pi = math.pi / 2
math.sin = function(x) math.sin = function(x)
local sign = 1 local sign = 1
x = x % 360 x = (x / tau * 360) % 360
if x < 0 then if x < 0 then
x = - x x = - x
sign = - sign sign = - sign
@ -16,5 +16,5 @@ math.sin = function(x)
end end
math.cos = function(x) math.cos = function(x)
return math.sin(x + 90) return math.sin(x + half_pi)
end end