belt_length

gistfile1.txt

import cv2
import numpy as np
import math

imgSize = 600,600, 3
coreCenter = 300,300
coreSize = 50
beltThickness = .045
beltLength = 5025
segmentStart = coreCenter[0], coreCenter[1] + coreSize
distanceFromCore = coreSize
measuredDistance = 0

img = np.zeros((imgSize), np.uint8)
cv2.circle(img, coreCenter, coreSize, (123,123,123), -1)

def distance(a,b):
    return math.sqrt((a[0]-b[0])**2 + (a[1]-b[1])**2)

for i in range(beltLength):
    angle = i / 100.0
    segmentEndX = math.sin(angle) * distanceFromCore + coreCenter[0]
    segmentEndY = math.cos(angle) * distanceFromCore + coreCenter[1]
    segmentEnd = tuple(np.array((segmentEndX, segmentEndY), int))
        
    cv2.line(img, segmentStart, segmentEnd, (255,255,255), 1)

    measuredDistance += distance(segmentStart, segmentEnd)
    distanceFromCore += beltThickness
    segmentStart = segmentEnd

print(measuredDistance)
cv2.imshow('img', img)
cv2.imwrite('/home/stephen/Desktop/belt.png', img)
cv2.waitKey()
cv2.destroyAllWindows()