require("gd")

im = gd.createTrueColor(80, 80)
assert(im)

black = im:colorAllocate(0, 0, 0)
white = im:colorAllocate(255, 255, 255)
im:filledEllipse(40, 40, 70, 50, white)

im:png("./output/ellipse_out.png")