hands.py

#!/usr/bin/env python3
"""
@Filename:    HandCoords.py
@Author:      dulanj
@Time:        2021-09-23 15.32
"""
import numpy as np


class Point:
    def __init__(self, point):
        self.x = point.x
        self.y = point.y
        self.z = point.z

    def get(self):
        return np.array([self.x, self.y, self.z])

    def __sub__(self, other):
        return np.linalg.norm(self.get() - other.get())


class Finger:
    def __init__(self, landmarks):
        self.tip = Point(landmarks[3])
        self.dip = Point(landmarks[2])
        self.pip = Point(landmarks[1])
        self.mcp = Point(landmarks[0])


class Hand:
    def __init__(self, hand_lmk):
        landmarks = hand_lmk.landmark
        self.thumb = Finger(landmarks[1:5])
        self.index = Finger(landmarks[5:9])
        self.middle = Finger(landmarks[9:13])
        self.ring = Finger(landmarks[13:17])
        self.pinky = Finger(landmarks[17:21])
        self.palm = Point(landmarks[0])

        x_coords = [lmk.x for lmk in landmarks]
        y_coords = [lmk.y for lmk in landmarks]
        self.width = np.max(x_coords) - np.min(x_coords)
        self.height = np.max(y_coords) - np.min(y_coords)


class Hands:
    def __init__(self, results):
        self.left = None
        self.right = None
        self.areAvailable = False
        if results.multi_hand_landmarks:
            for handType, handLms in zip(results.multi_handedness, results.multi_hand_landmarks):
                if handType.classification[0].label == "Right":
                    self.left = Hand(handLms)
                else:
                    self.right = Hand(handLms)
                self.areAvailable = True


if __name__ == '__main__':
    class P:
        x = 0
        y = 0
        z = 0

    p1 = P
    p1.x = 1
    p1.y = 1
    p1.z = 0

    pt1 = Point(p1)

    p2 = P
    p2.x = 5
    p2.y = 4
    p2.z = 0

    pt2 = Point(p2)

    print(pt2-pt1)