23 lines
580 B
Lua
23 lines
580 B
Lua
-- LUALOCALS < ---------------------------------------------------------
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local math, vector
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= math, vector
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local math_atan2
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= math.atan2
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-- LUALOCALS > ---------------------------------------------------------
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vector.dot = vector.dot or function(a, b)
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return a.x * b.x + a.y * b.y + a.z * b.z
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end
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vector.cross = vector.cross or function(a, b)
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return {
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x = a.y * b.z - a.z * b.y,
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y = a.z * b.x - a.x * b.z,
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z = a.x * b.y - a.y * b.x
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}
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end
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vector.angle = vector.angle or function(a, b)
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return math_atan2(vector.length(vector.cross(a, b)), vector.dot(a, b))
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end
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