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from imutils.video import VideoStream
from imutils import face_utils
import datetime
import math
import argparse
import imutils
import time
import dlib
import cv2


def calcDist(a,b):
	return math.sqrt((a[0]-b[0])*(a[0]-b[0]) + (a[1]-b[1])*(a[1]-b[1]))

def findDist(mat):
	oo = calcDist(shape[0], shape[16])
	om = (calcDist(shape[0], shape[8]) + calcDist(shape[8], shape[16]) )/ 2
	egeg = calcDist(shape[36], shape[39])
	eded = calcDist(shape[42], shape[45])
	bgbd = calcDist(shape[48], shape[54])
	ngnd = calcDist(shape[31], shape[35])

	return  [oo, om, egeg, eded, bgbd, ngnd]

def dist2vect(vect1, vect2):
	tmp = 0
	for a in range(len(vect1)):
		tmp += int((vect1[a] - vect2[a])) * int((vect1[a] - vect2[a]))
	return tmp

ap = argparse.ArgumentParser()

args = vars(ap.parse_args())

detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor('shape_predictor_68_face_landmarks.dat')

vs = VideoStream(usePiCamera=args["picamera"] > 0).start()


val = []
while True:

	frame = vs.read()
	frame = imutils.resize(frame, width=400)
	gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
	rects = detector(gray, 0)
	tmp = []

	for rect in rects:

		shape = predictor(gray, rect)
		shape = face_utils.shape_to_np(shape)
		tmp = findDist(shape)

		for (x, y) in shape:
			cv2.circle(frame, (x, y), 1, (0, 0, 255), -1)

	cv2.imshow("Frame", frame)
	key = cv2.waitKey(1) & 0xFF
	if key == ord("s"):
		val = tmp
	if key == ord("a"):
		try:
			a = dist2vect(val, tmp)
			if a < 100:
				for i in range(0, 16):
					cv2.line(image,(shape[i][0],shape[i][1]),(shape[i+1][0], shape[i+1][1]), (255,255,0), 2)
		except:
			pass
	if key == ord("q"):
		break

cv2.destroyAllWindows()
vs.stop()


usage: __main__.py [-h]
__main__.py: error: unrecognized arguments: -f C:\Users\Aoda\AppData\Roaming\jupyter\runtime\kernel-9b1d24a9-0009-40fb-ac92-089534c4d784.json
An exception has occurred, use %tb to see the full traceback.

SystemExit: 2

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