#Ricardo Hernanadez
import numpy as np
import cv2

cap = cv2.VideoCapture(0)

# take first frame of the video
ret,frame = cap.read()

# setup initial location of window
refPt = []
cropping = False
cont = 0
r = 0
c = 0
def draw_rect(event,x,y,flags,param):
	global cont, r,c
	if event == cv2.EVENT_LBUTTONDOWN:
		cont = cont + 1		
		r = y
		c = x
	#elif event == cv2.EVENT_LBUTTONUP:
		
	

cv2.namedWindow('image')
cv2.setMouseCallback('image',draw_rect)
r1 = 0
c1 = 0

while(cont < 3):
	ret ,frame = cap.read()
	print cont
	#print r, c
	if cont == 1:
		r1 = r
		c1 = c
	elif cont == 2:
		h = r - r1
		w = c - c1
	cv2.imshow('image',frame)
	#cv2.imshow('dst',dst)
        k = cv2.waitKey(60) & 0xff
        if k == 27:
            break

#r,h,c,w = 250,90,400,125  # simply hardcoded the values
c = c1
r = r1
print c, r, w, h
track_window = (c,r,w,h)

# set up the ROI for tracking
roi = frame[r:r+h, c:c+w]
hsv_roi =  cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv_roi, np.array((0., 60.,32.)), np.array((180.,255.,255.)))
roi_hist = cv2.calcHist([hsv_roi],[0],mask,[180],[0,180])
cv2.normalize(roi_hist,roi_hist,0,255,cv2.NORM_MINMAX)

# Setup the termination criteria, either 10 iteration or move by atleast 1 pt
term_crit = ( cv2.TERM_CRITERIA_EPS | cv2.TERM_CRITERIA_COUNT, 10, 1 )

while(1):
    ret ,frame = cap.read()

    if ret == True:
        hsv = cv2.cvtColor(frame, cv2.COLOR_BGR2HSV)
        dst = cv2.calcBackProject([hsv],[0],roi_hist,[0,180],1)

        # apply meanshift to get the new location
        ret, track_window = cv2.meanShift(dst, track_window, term_crit)

        # Draw it on image
        x,y,w,h = track_window
        img2 = cv2.rectangle(frame, (x,y), (x+w,y+h), 255,2)
        cv2.imshow('image',frame)
	#cv2.imshow('dst',dst)

        k = cv2.waitKey(60) & 0xff
        if k == 27:
            break
        else:
            cv2.imwrite(chr(k)+".jpg",img2)

    else:
        break

cv2.destroyAllWindows()
cap.release()