local opus = {
	'fffff00',
	'ffff07000',
	'ff00770b00 4444',
	'ff077777444444444',
	'f07777744444444444',
	'f0000777444444444',
	'070000111744444',
	'777770000',
	'7777000000',
	'70700000000',
	'077000000000',
}

local hex = {
	['0'] = 0xF0F0F04F,
	['1'] = 0xF2B2334F,
	['2'] = 0xE57FD84F,
	['3'] = 0x99B2F24F,
	['4'] = 0xDEDE6C4F,
	['5'] = 0x7FCC194F,
	['6'] = 0xF2B2CC4F,
	['7'] = 0x4C4C4C4F,
	['8'] = 0x9999994F,
	['9'] = 0x4C99B24F,
	['a'] = 0xB266E54F,
	['b'] = 0x3366CC4F,
	['c'] = 0x7F664C4F,
	['d'] = 0x57A64E4F,
	['e'] = 0xCC4C4C4F,
--  ['f'] = 0x191919FF, -- transparent
}

local function update()
	local canvas  = device['plethora:glasses'] and device['plethora:glasses'].canvas()
	if canvas then
		local Tween  = require('ui.tween')

		canvas.clear()
		local w, h = canvas.getSize()
		local pos = { x = w / 2, y = h / 2 - 30 }
		local group = canvas.addGroup(pos)
		local function drawLine(k, line)
			for i = 1, #line do
				local pix = hex[line:sub(i, i)]
				if pix then
					group.addRectangle(i*1.5, k*2.25, 1.5, 2.25, pix)
				end
			end
		end

		for k,line in ipairs(opus) do
			drawLine(k, line)
		end
		os.sleep(.5)
		local tween = Tween.new(40, pos, { x = w - 60, y = h - 30 }, 'outBounce')
		repeat
			local finished = tween:update(1)
			os.sleep(0)
			group.setPosition(pos.x, pos.y)
		until finished
	end
end

kernel.run({
	title = 'opus',
	env = _ENV,
	hidden = true,
	fn = update,
})