Heart

def heart(size)
        size.times do |iy|
                line = ''
                y = -iy.to_f / size * 3 + 1.5
                fp = 1.0
                size.times do |ix|
                        x = ix.to_f / size * 3 - 1.5
                        f = (x**2+y**2-1)**3 - x**2*y**3
                        line += (f*fp < 0 || f < 0.0001) ? '#' : ' '
                        fp = f
                end
                puts line
        end
end

heart(80)