}//End of method Initialize_dot_clock
protected void All_systems_go(Object sender, EventArgs events)//Event handler of the start button.
{ //The motion clock will either pause or resume
if (this_is_first_click_on_start_button)
{ //This section updates the position of the ball one time when the start button is first clicked. This is necessary when-
//refresh_rate > dot_update_rate. The location of the ball will be displayed incorrectly in the interval between the
//first click on the start button and the first tic of the dot_motion_clock. Therefore, the following section performs
//a one-time update of the position of the ball.
curve_algorithms.get_next_coordinates(amplitude, coefficient, delta, ref t, out x, out y);
//Convert the Cartesian coordinates to scaled coordinates for viewing on a monitor
x_scaled_double = scale_factor * x + offset;
y_scaled_double = (double)form_height / 2.0 - scale_factor * y;
this_is_first_click_on_start_button = false;
if (x_scaled_double > (double)(form_width - 1))
{
dot_motion_clock.Enabled = false;
graphic_area_refresh_clock.Enabled = false;
System.Console.WriteLine("Both clocks have stopped. 1 You may close the window.");
} //End of if
} //End of section updating the position of the ball one time
if (motion_clock_active)
{
dot_motion_clock.Enabled = false;
graphic_area_refresh_clock.Enabled = false;
start_button.Text = "Resume";
}
else
{
dot_motion_clock.Enabled = true;
graphic_area_refresh_clock.Enabled = true;
start_button.Text = "Pause";
}
motion_clock_active = !motion_clock_active;
}//End of method All_system_go
} //End of Manage_spiral_clock
//The next method updates the x and y coordinates of the dot that is tracing the sine curve.
protected void Update_the_position_of_the_dot(System.Object sender, ElapsedEventArgs an_event)
{ //Call a method to compute the next pair of Cartesian coordinates for the moving particle.
curve_algorithms.get_next_coordinates(amplitude, coefficient, delta, ref t, out x, out y);
//Convert the Cartesian coordinates to scaled coordinates for viewing on a monitor
x_scaled_double = scale_factor * x + offset;
y_scaled_double = (double)form_height / 2.0 - scale_factor * y;
if (x_scaled_double > (double)(form_width - 1))
{
dot_refresh_clock.Enabled = false;
graphic_area_refresh_clock.Enabled = false;
System.Console.WriteLine("Both clocks have stopped. You may close the window.");
}
} //End of method Update_the_position_of_the_dot
