Interpolate a circle to another circle (number of points/2)

CircleTransformation.lua

local processPoints = function(shape1, shape2)
	local d = #shape1/#shape2 * 2
	local all = {}
	for i = 1, #shape1, 2 do
		all[i] = false
		if i % d == 1 then
			all[i] = true
		end
	end
	return all
end

local startTransform = function(t, from, to)
	local n = 1
	local m = 1
	for k,v in pairs(t) do
		local x = k
		local y = k + 1
		if v then
			flux.to(from, 4, { [x] = to[n], [y] = to[n+1] })
			n = n + 2
		else
			local x1 = m
			local y1 = m+1
			local x2 = m+2
			local y2 = m+3
			if x2 > #to then x2 = 1 end
			if y2 > #to then y2 = 2 end
			local mx = (to[x1] + to[x2])/2
			local my = (to[y1] + to[y2])/2
			flux.to(from, 4, { [x] = mx, [y] = my })
			m = m + 2
		end
	end
end

function doTest(n)
	local w = love.graphics.getWidth()
	local h = love.graphics.getHeight()
	circle = draft:circle(w/2, h/2, 512, n, "line")
	circle2 = draft:circle(w/2, h/2, 256, n/2, "line")
	rectangle = draft:rectangle(w/2, h/2, 128, 128, "line")

	points = processPoints(circle, circle2)
	startTransform(points, circle, circle2)
end