def draw_vertical_rainbow_frame_at(self, time):
time %= self._duration_in_miliseconds
known_time_points = [0, self._duration_in_miliseconds]
known_colors = [self._start_colors, self._end_colors]
time_to_interpolate = [time]
interpolated_colors = interpolate(known_time_points, known_colors,
time_to_interpolate)
colors = interpolated_colors[0]
left_color = colors[0]
right_color = colors[1]
self.draw_vertical_rainbow(Color.from_float_array(left_color),
Color.from_float_array(right_color))
def _draw_vertical_rainbow(self, known_coordinates, known_colors):
coordinates_to_interpolate = generate_range_points(
0, self._width - 1, self._width)
interpolated_colors = interpolate(known_coordinates, known_colors,
coordinates_to_interpolate)
for x in range(self._width):
for y in range(self._height):
color = Color.from_float_array(interpolated_colors[x])
self._image.putpixel((x, y), color.get_as_tuple())
