Minetest-WorldEditAdditions/worldeditadditions/utils/numbers.lua

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2020-05-11 01:02:02 +00:00
-- From http://lua-users.org/wiki/SimpleRound
2020-05-11 23:38:42 +00:00
function worldeditadditions.round(num, numDecimalPlaces)
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local mult = 10^(numDecimalPlaces or 0)
return math.floor(num * mult + 0.5) / mult
end
function worldeditadditions.hypotenuse(x1, y1, x2, y2)
local xSquare = math.pow(x1 - x2, 2);
local ySquare = math.pow(y1 - y2, 2);
return math.sqrt(xSquare + ySquare);
end
function worldeditadditions.sum(list)
if #list == 0 then return 0 end
local sum = 0
for i,value in ipairs(list) do
sum = sum + value
end
return sum
end
function worldeditadditions.average(list)
print("[DEBUG] averaging "..#list.." numbers")
if #list == 0 then return 0 end
return worldeditadditions.sum(list) / #list
end
--- Returns the minetest.get_us_time() in ms
-- @return float
function worldeditadditions.get_ms_time()
return minetest.get_us_time() / 1000
end
function worldeditadditions.eta(existing_times, times_total_count)
print("[DEBUG] eta got "..#existing_times.." numbers")
local average = worldeditadditions.average(
worldeditadditions.table_get_last(existing_times, 25)
)
local times_left = times_total_count - #existing_times
if times_left == 0 then return 0 end
return average * times_left
end