HandTrackingModule.py

import cv2
import mediapipe as mp
import time
import math
from pynput.mouse import Button, Controller
mouse = Controller()

class handDetector():
    def __init__(self,mode=False,maxHands=2,detectionCon=0.5,trackCon=0.5):
        self.mode=mode
        self.maxHands=maxHands
        self.detectionCon=detectionCon
        self.trackCon=trackCon

        self.mpHands = mp.solutions.hands
        self.hands = self.mpHands.Hands(self.mode,self.maxHands,
                                        self.detectionCon,self.trackCon)
        self.mpDraw = mp.solutions.drawing_utils
        self.tipIds = [4,8,12,16,20]

    def findHands(self,img,draw=True):
        imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
        self.results = self.hands.process(imgRGB)
        #print(results.multi_hand_landmarks)

        if self.results.multi_hand_landmarks :
            for handLms in self.results.multi_hand_landmarks:
                if draw:
                    self.mpDraw.draw_landmarks(img, handLms, self.mpHands.HAND_CONNECTIONS)

        return img

    def findPosition(self, img, handNo=0, draw=True):
        xList = []
        yList = []
        bbox =  []
        self.lmList = []
        if self.results.multi_hand_landmarks:
            myHand=self.results.multi_hand_landmarks[handNo]
            for id, lm in enumerate(myHand.landmark):
                print(id,lm)
                h, w, c = img.shape
                cx, cy = int(lm.x*w),int(lm.y*h)
                xList.append(cx)
                yList.append(cy)
                #print(id, cx, cy)
                self.lmList.append([id, cx, cy])
                if draw:

                    cv2.circle(img, (cx, cy), 8, (255,0,0), cv2.FILLED)


            xmin , xmax = min(xList), max(xList)
            ymin , ymax = min(yList), max(yList)
            bbox = xmin, ymin, xmax, ymax


            if draw:
                cv2.rectangle(img, (bbox[0]-20,bbox[1]-20),
                            (bbox[2]+20,bbox[3]+20), (0,255,0), 2)

        return self.lmList, bbox

    def fingersUp(self):
        fingers = []
        # Thumb
        if self.lmList[self.tipIds[0]][1] > self.lmList[self.tipIds[0] - 1][1]:
            fingers.append(1)
        else:
            fingers.append(0)
        # 4 Fingers
        for id in range(1,5):
            if self.lmList[self.tipIds[id]][2] < self.lmList[self.tipIds[id] - 2][2]:
                fingers.append(1)
            else:
                fingers.append(0)
        return fingers

    def findDistance(self,p1,p2,img,draw=True):
        x1, y1 =self.lmList[p1][1],self.lmList[p1][2]
        x2, y2 = self.lmList[p2][1],self.lmList[p2][2]
        cx,cy = (x1+x2)//2, (y1+y2)//2

        if draw:
            cv2.circle(img, (x1,y1), 8, (255,0,255), cv2.FILLED)
            cv2.circle(img, (x2,y2), 8, (255,0,255), cv2.FILLED)
            cv2.line(img, (x1,y1),(x2,y2),(255,0,255),3)
            cv2.circle(img, (cx,cy), 8, (255,0,255), cv2.FILLED)

        length = math.hypot(x2 - x1, y2 - y1)
        return length,img,[x1,y1,x2,y2,cx,cy]
        #print(length)

def main():
    pTime = 0
    cTime = 0
    cap = cv2.VideoCapture(0)
    detector = handDetector()
    data_in = 0
    data_list = []
    while True:
        success, img = cap.read()
        out = img
        img = cv2.flip(img, 1)

        img = detector.findHands(img)

        lmList=detector.findPosition(img)
        #print(lmList)
        y = []
        x = []
        if len(lmList[0]) != 0 :
            for item in lmList[0]:
                #print(item)
                y.append(item[1])
                x.append(item[2])

            mouse_y = lmList[1][1]
            differnce = lmList[1][3] - mouse_y
            #print(differnce)
            for item in lmList[0]:
                check_y = item[2]
                if check_y == mouse_y:
                    mouse_x = item[1]
            #print(mouse_x, mouse_y)



            #mouse_y = mouse_y - 200

            #print("BEFORE", mouse.position)
            if differnce < 250:
                mouse.press(Button.left)
                mouse.release(Button.left)
                print("click")
            else:
                #print(mouse_y)
                mouse.position = (mouse_x, mouse_y)

            #print(y ,"found y ")
            #print(y)
            #max_y = max(y)
            #print(max_y)


        if len(lmList) >4:
            print(lmList[4], "Sep")

        cTime = time.time()
        fps = 1/(cTime-pTime)
        pTime = cTime

        cv2.putText(img,str(int(fps)),(10,70),cv2.FONT_HERSHEY_PLAIN,3,
                            (255,0,255),3)
        out = img
        cv2.imshow("image",out)
        cv2.waitKey(10)


if __name__ == "__main__":
    main()