How would I create a function that would check if a coordinate is within a certain map boundary?

Question

I work at a pizza place and I thought it would be fun to create code to check if a location is within our delivery zone, instead of checking the giant ugly map that we have. I've already created code to convert a street address to coords, but how can I do the rest? Our delivery zone has tons of zigzags so I can't use a basic shape.

Delivery Zone for refs:

Answer 1

Use https://agromonitoring.com/create-polygon?lat=39.2323&lon=-121.311&zoom=7&op=truecolor&from=s2 to define a geofence which is basically a set of lat/long coordinates that represent the vertices of your polygon. Store these vertices as a list of tuples, let's call it serviceAreaCoordinates.

import picket

fence = picket.Fence()
# serviceAreaCoordinates is a list of tuples containing lat, long
for coordinate in serviceAreaCoordinates:
    fence.add_point(tuple(coordinate))

answer = fence.check_point(deliveryLocationCoordinate)

Answer 2

If I look on your image my first impression is that your red contour line, that defines the border of your delivery area, could be very easy extracted as a contour with opencv. Then you will get as result of this a list with coordinates of the red line. If a customer calls, then you already calculate his coordinates. Then you can test your address coordinates against the contour coordinates.

Step1: Take a look at how to get contours (really not difficult with opencv for python): https://learnopencv.com/contour-detection-using-opencv-python-c/

Step2: Take a look at this post to check if a point is inside a contour: How to check if point is placed inside contour?