38 lines
550 B
Lua
38 lines
550 B
Lua
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local M = {}
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function M.v3_length_squared(v)
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local x2 = v.x * v.x
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local y2 = v.y * v.y
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local z2 = v.z * v.z
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return x2 + y2 + z2
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end
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function M.v3_normalized(v)
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local length = math.sqrt(M.v3_length_squared(v))
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local new_vec = {
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x = v.x / length,
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y = v.y / length,
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z = v.z / length,
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}
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return new_vec
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end
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function M.v3_mult(v, f)
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return {
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x = v.x * f,
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y = v.y * f,
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z = v.z * f,
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}
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end
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function M.v3_add(v1, v2)
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return {
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x = v1.x + v2.x,
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y = v1.y + v2.y,
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z = v1.z + v2.z,
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}
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end
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return M
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