Draw a clock: Difference between revisions

=={{header|Ruby}}==

{{libheader|Shoes}}

[[File:shoes_clock.png|thumb|Sample display of Ruby solution]]

<lang ruby>Shoes.app(:width=>205, :height => 228, :title => "A Clock") do

def draw_ray(width, start, stop, ratio)

angle = Math::PI * 2 * ratio - Math::PI/2

strokewidth width

cos = Math::cos(angle)

sin = Math::sin(angle)

line 101+cos*start, 101+sin*start, 101+cos*stop, 101+sin*stop

end

def update

t = Time.now

@time.text = t.strftime("%H:%M:%S")

h, m, s = (t.hour % 12).to_f, t.min.to_f, t.sec.to_f

s += t.to_f - t.to_i # add the fractional seconds

@hands.clear do

draw_ray(3, 0, 70, (h + m/60)/12)

draw_ray(2, 0, 90, (m + s/60)/60)

draw_ray(1, 0, 95, s/60)

end

end

# a place for the text display

@time = para(:align=>"center", :family => "monospace")

# draw the clock face

stack(:width=>203, :height=>203) do

strokewidth 1

fill gradient(deepskyblue, aqua)

oval 1, 1, 200

fill black

oval 98, 98, 6

# draw the minute indicators

0.upto(59) {|m| draw_ray(1, (m % 5 == 0 ? 96 : 98), 100, m.to_f/60)}

end.move(0,23)

# the drawing area for the hands

@hands = stack(:width=>203, :height=>203) {}.move(0,23)

animate(5) {update}

end</lang>