Module:Ups and downs sharpness

Module documentation[view] [edit] [history] [purge]

This module should not be invoked directly; use its corresponding template instead: Template:Ups and downs sharpness.

This module automatically creates a table with the combinations of symbols to notate a given edo using Kite's ups and downs notation.

Introspection summary for Module:Ups and downs sharpness

Functions provided (1)
Line	Function	Params
11	`ud_sharpness` (invokable)	`(frame)`

Lua modules required (1)
Variable	Module	Functions used
utils	Module:Utils	dependency not used

No function descriptions were provided. The Lua code may have further information.

-- unfinished module!
local p = {}
local utils = require("Module:Utils")

-- calculate amount of steps for sharp/flat
local function sharp_n(edo)
	return (7 * math.floor((edo * math.log(3) / math.log(2)) + 0.5)) - (11 * edo) -- mapping of augmented unison
end

-- generate table
function p.ud_sharpness(frame)
	local sharp = sharp_n(frame.args["edo"])
	local thead = {"{| class=\"wikitable center-all\"\n"}
	local tlabel = {"|-\n! Step offset\n{{!}}'''0'''"}
	local tsharp = {"|-\n! Sharp symbol\n| rowspan=\"2\" | &nbsp;[[File:Heji18.svg|15px]]"}
	local tflat = {"|-\n! Flat symbol"}
	
	for i=1, (sharp*2+1) do
		if i % sharp == 0 then
			table.insert(tlabel, "'''" .. i .. "'''")
		else
			table.insert(tlabel, "" .. i)
		end
	end
	thead = thead .. table.concat(tlabel, "\n|") .. "\n|}"
	return frame:preprocess(thead)
end

return p