local t=0; local cx,cy=320,240; local speed=2
local scale={300,200,120}; local k={5,7,3}

function love.load()
  love.window.setMode(640,480)
  love.graphics.setBackgroundColor(0,0,0)
end

function love.update(dt)
  t=t+dt*speed
end

function love.draw()
  for l=1,3 do
    for theta=0,math.pi*8,0.01 do
      local r=scale[l]*math.cos(k[l]*theta+t*l*0.5)
      local x=cx+r*math.cos(theta)
      local y=cy+r*math.sin(theta)
      local c=math.floor(theta*50+t*50*l)%256
      love.graphics.setColor(c/255,((c*2)%256)/255,(c*3)%256/255,1)
      love.graphics.points(x,y)
    end
  end
  for r=50,400,50 do
    for i=1,r do
      local angle=i*math.pi*2/r+t
      local x=cx+r*math.cos(angle)
      local y=cy+r*math.sin(angle)
      love.graphics.setColor(1,1,1,0.3)
      love.graphics.points(x,y)
    end
  end
end