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HybridDog 2014-02-22 22:40:17 +01:00
parent 63fca47f33
commit 33093457f4
1 changed files with 15 additions and 0 deletions
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15
init.lua
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@ -136,3 +136,18 @@ function vector.straightdelay(s, v, a)
end
return (math.sqrt(v*v+2*a*s)-v)/a
end
-- needs to get reworked
function vector.sun_dir(t)
if t < 0.25
or t > 0.75 then
return
end
local p2
if t > 0.5 then
p2 = {x=-4, y=1/(2*t-1), z=0}
else
p2 = {x=4, y=1/(1-2*t), z=0}
end
return vector.direction({x=0,y=0,z=0}, p2)
end