import numpy as np
import cv2
import math
print("version openCV:"+str(  cv2.__version__ ))

img = cv2.imread('img.jpg')

print(img)
print(type(img))
print(img.shape)

print(img[637][633][:])

img[637][633][0]= 255
img[637][633][1]= 0
img[637][633][2]= 0

haut=60
larg=60
v0=264
u0=700
ball = img[v0:v0+haut, u0:u0+larg]
for n in range(3):
  v1=224
  u1=442
  img[v1:v1+haut, n*100+u1:n*100+u1+larg] = ball


cv2.line(img,(0,0),(511,511),(255,0,0),1,cv2.LINE_AA)

hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)

# define range of blue color in HSV
lower_green = np.array([35,0,0])
upper_green = np.array([85,255,255])

# Threshold the HSV image to get only blue colors
mask = cv2.inRange(hsv, lower_green, upper_green)

# Bitwise-AND mask and original image
res = cv2.bitwise_and(img,img, mask= mask)


for m in range(256):
  for n in range(256):
    img[n][m][0]= m
    img[n][m][1]= 0
    img[n][m][2]= n


for m in range(img.shape[1]):
  for n in range(img.shape[0]):
    g=(m%2)*255
    img[n][m][0]= g
    img[n][m][1]= g
    img[n][m][2]= g



#cv2.line(img,(0,0),(511,511),(255,0,0),1,cv2.LINE_4)


font = cv2.FONT_HERSHEY_SIMPLEX
cv2.putText(img,'OpenCV',(10,500), font, 4,(255,255,255),2,cv2.LINE_AA)


flags = [i for i in dir(cv2) if i.startswith('COLOR_')]
print(flags)

'''

Enumerator
FILLED 
Python: cv.FILLED
LINE_4 
Python: cv.LINE_4
4-connected line
LINE_8 
Python: cv.LINE_8
8-connected line
LINE_AA 
Python: cv.LINE_AA
antialiased line
'''
#cv2.imshow('image',img)

cv2.imshow('image',res)

cv2.waitKey(0)
cv2.destroyAllWindows()



#cv2.imwrite('imggray.png',img)
#cv2.imwrite('imggray.jpg',img)#cv2.imwrite('imggray.jpg',img)

cv2.imwrite('imgcolor.png',img)