forked from mtcontrib/vector_extras
update
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15
init.lua
15
init.lua
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@ -136,3 +136,18 @@ function vector.straightdelay(s, v, a)
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end
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return (math.sqrt(v*v+2*a*s)-v)/a
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end
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-- needs to get reworked
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function vector.sun_dir(t)
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if t < 0.25
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or t > 0.75 then
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return
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end
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local p2
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if t > 0.5 then
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p2 = {x=-4, y=1/(2*t-1), z=0}
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else
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p2 = {x=4, y=1/(1-2*t), z=0}
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end
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return vector.direction({x=0,y=0,z=0}, p2)
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end
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