def draw_stickers(self, frame, stickers, offset_x, offset_y):
"""Draws the given stickers onto the given frame."""
index = -1
for row in range(3):
for col in range(3):
index += 1
x1 = (offset_x + STICKER_AREA_TILE_SIZE *
col) + STICKER_AREA_TILE_GAP * col
y1 = (offset_y + STICKER_AREA_TILE_SIZE *
row) + STICKER_AREA_TILE_GAP * row
x2 = x1 + STICKER_AREA_TILE_SIZE
y2 = y1 + STICKER_AREA_TILE_SIZE
# shadow
cv2.rectangle(frame, (x1, y1), (x2, y2), (0, 0, 0), -1)
# foreground color
cv2.rectangle(
frame, (x1 + 1, y1 + 1), (x2 - 1, y2 - 1),
ColorDetector.get_prominent_color(stickers[index]), -1)
