hand distance finder.py

import random
import cv2
from cvzone.HandTrackingModule import HandDetector
import math
import numpy as np
import cvzone
import time

# Webcam
cap = cv2.VideoCapture(0)
cap.set(3, 1280)
cap.set(4, 720)

# Hand Detector
detector = HandDetector(detectionCon=0.8, maxHands=1)

# Find Function
# x is the raw distance y is the value in cm
x = [300, 245, 200, 170, 145, 130, 112, 103, 93, 87, 80, 75, 70, 67, 62, 59, 57]
y = [20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100]
coff = np.polyfit(x, y, 2)  # y = Ax^2 + Bx + C

# Game Variables
cx, cy = 250, 250
color = (255, 0, 255)
counter = 0
score = 0
timeStart = time.time()
totalTime = 2000

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

    if time.time()-timeStart < totalTime:

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

        if hands:
            lmList = hands[0]['lmList']
            x, y, w, h = hands[0]['bbox']
            x1, y1,_ = lmList[5]
            x2, y2,_ = lmList[17]

            distance = int(math.sqrt((y2 - y1) * 2 + (x2 - x1) * 2))
            A, B, C = coff
            distanceCM = A * distance ** 2 + B * distance + C
            # print(distanceCM, distance)

            if distanceCM < 40:
                if x < cx < x + w and y < cy < y + h:
                    counter = 1
            cv2.rectangle(img, (x, y), (x + w, y + h), (255, 0, 255), 3)
            cvzone.putTextRect(img, f'{int(distanceCM)} cm', (x + 5, y - 10))

        if counter:
            counter += 1
            color = (0, 255, 0)
            if counter == 3:
                cx = random.randint(100, 1100)
                cy = random.randint(100, 600)
                color = (255, 0, 255)
                score +=1
                counter = 0

        # Draw Button
        cv2.circle(img, (cx, cy), 30, color, cv2.FILLED)
        cv2.circle(img, (cx, cy), 10, (255, 255, 255), cv2.FILLED)
        cv2.circle(img, (cx, cy), 20, (255, 255, 255), 2)
        cv2.circle(img, (cx, cy), 30, (50, 50, 50), 2)

        # Game HUD
        # cvzone.putTextRect(img, f'Time: {int(totalTime-(time.time()-timeStart))}',
        #                    (1000, 75), scale=3, offset=20)
        # cvzone.putTextRect(img, f'Score: {str(score).zfill(2)}', (60, 75), scale=3, offset=20)
    else:
        cvzone.putTextRect(img, 'Game Over', (400, 400), scale=5, offset=30, thickness=7)
        cvzone.putTextRect(img, f'Your Score: {score}', (450, 500), scale=3, offset=20)
        cvzone.putTextRect(img, 'Press R to restart', (460, 575), scale=2, offset=10)



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

    if key == ord('r'):
        timeStart = time.time()
        score = 0