Sinus Computercraft

term.setBackgroundColor(colors.black)
term.clear()
local w, h = term.getSize()
x = 1
y0 = math.ceil(h/2)

for i = 0,w,1 do
term.setCursorPos(i,y0)
write("-")
end

for i = 0,h,1 do
term.setCursorPos(x+1,i)
write("|")
end

term.setTextColor(colors.lime)
for i = 0,2.1*math.pi,0.1 do
y = (math.sin(i)*15)
x = x+1
term.setCursorPos(x,y+y0)
--paintutils.drawPixel(x,y+y0,colors.green)
write("·")
end

term.setCursorPos(3,1)