def _get_roi(size, ratio=0.42, position='tl'):
'''
根据缩放比计算指定的举行区域的坐标
Parameters
:param size: 图像大小
:param ratio: 缩放比
:param position: 缩放方式
'''
width, height = Util.round_int(size[0] * ratio), Util.round_int(size[1] *
ratio)
if position == 'tl':
x, y = 0, 0
elif position == 'tr':
x, y = size[0] - width, 0
elif position == 'bl':
x, y = 0, size[1] - height
elif position == 'br':
x, y = size[0] - width, size[1] - height
return (x, y, width, height)
def _get_tip_position(array, contour, verbose=False):
approx_contour = cv2.approxPolyDP(contour,
0.08 * cv2.arcLength(contour, True),
True)
convex_points = cv2.convexHull(approx_contour, returnPoints=True)
cx, cy = 999, 999
for point in convex_points:
cur_cx, cur_cy = point[0][0], point[0][1]
if verbose:
cv2.circle(array, (cur_cx, cur_cy), 4, _COLOR_GREEN, 4)
if (cur_cy < cy):
cx, cy = cur_cx, cur_cy
(screen_x, screen_y) = pyautogui.size()
height, width, _ = array.shape
x = Util.round_int((float(cx)) / (width - 0) * (screen_x + 1))
y = Util.round_int((float(cy)) / (height - 0) * (screen_y + 1))
return (array, (x, y))
