2409.sagews

# --- global ---
display_points = Graphics()
n_points_global = 5

for i in range(n_points_global):
    display_points += point((round(10 * random(), 0), round(10 * random(), 0)))
            
@interact
def point_setting(
        point_operation = ['Reset', 'Add a point'],
        n_points_local = input_box(default = n_points_global, label = 'number of points:', width = 5)
    ):
    global display_points, n_points_global
    
    if point_operation == 'Add a point':
        display_points += point((round(10 * random(), 0), round(10 * random(), 0)))
        n_points_global += 1
        n_points_local = n_points_global
        point_operation = 'Reset'

    print "number of points = ", len(display_points)
    show(display_points, xmin = 0, xmax = 10, ymin = 0, ymax = 10)