CALCULATOR.PY

import cv2
from cvzone.HandTrackingModule import HandDetector

class Button:
    def __init__(self, pos, width, height, value):

        self.pos = pos
        self.width = width
        self.height = height
        self.value = value

    def draw(self, img):
        cv2.rectangle(img, self.pos, (self.pos[0] + self.width, self.pos[1] + self.height), (256, 256, 256), cv2.FILLED)
        cv2.rectangle(img, self.pos, (self.pos[0] + self.width, self.pos[1] + self.height), (0, 0, 0), 4)
        cv2.putText(img, self.value, (self.pos[0] + 40, self.pos[1] + 60), cv2.FONT_HERSHEY_PLAIN, 2, (50, 50, 50), 2)


cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)
cap.set(3, 1280)
cap.set(4, 720)
detector = HandDetector(detectionCon=0.8, maxHands=1)

buttonListValues = [['7', '8', '9', '*'], ['4', '5', '6', '-'], ['1', '2', '3', '+'], ['0', '/', '.', '=']]


buttonList = []
for x in range(4):
    for y in range(4):
        xpos = x*100 + 800
        ypos = y*100 + 150
        buttonList.append(Button((xpos, ypos), 100, 100, buttonListValues[y][x]))

myEquation = '10-5'

while True:
    success, img = cap.read()
    img = cv2.flip(img, 1)

    hands, img = detector.findHands(img, flipType=False)

    cv2.rectangle(img, (800, 70), (800 + 400, 70 + 100), (256, 256, 256), cv2.FILLED)
    cv2.rectangle(img, (800, 70), (800 + 400, 70 + 100), (0, 0, 0), 4)
    for button in buttonList:
        button.draw(img)

    if hands:
        lmList = hands[0]['lmList']
        length, _, img = detector.findDistance(lmList[8], lmList[12], img)
        print(length)
        x, y = lmList[8]

    cv2.putText(img, myEquation, (810, 130), cv2.FONT_HERSHEY_PLAIN, 4, (50, 50, 50), 4)

    cv2.imshow("Image", img)
    cv2.waitKey(1)