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Vector extension: Unary minus, pow

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This commit is contained in:
Lars Mueller 2020-12-27 23:22:28 +01:00
parent 0ddc554ac0
commit 900249f8f7
1 changed files with 8 additions and 0 deletions
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8
vector.lua
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@ -97,12 +97,20 @@ function combinator(f)
end end
end end
function invert(v)
for key, value in pairs(v) do
v[key] = -value
end
end
add, add_scalar = combinator(function(a, b) return a + b end) add, add_scalar = combinator(function(a, b) return a + b end)
subtract, subtract_scalar = combinator(function(a, b) return a - b end) subtract, subtract_scalar = combinator(function(a, b) return a - b end)
multiply, multiply_scalar = combinator(function(a, b) return a * b end) multiply, multiply_scalar = combinator(function(a, b) return a * b end)
divide, divide_scalar = combinator(function(a, b) return a / b end) divide, divide_scalar = combinator(function(a, b) return a / b end)
pow, pow_scalar = combinator(function(a, b) return a ^ b end)
metatable.__add = add metatable.__add = add
metatable.__unm = invert
metatable.__sub = subtract metatable.__sub = subtract
metatable.__mul = multiply metatable.__mul = multiply
metatable.__div = divide metatable.__div = divide