convertCoordinates.js

export function convertCoordinates (coordinatesArray, zoom) {
  coordinatesArray.forEach((element, index, array) => {
    element.forEach((element2, index2, array2) => {
      array[index][index2][1] = convertLatitude(degreeToRadial(element2[1]), zoom)
      array[index][index2][0] = convertLongitude(degreeToRadial(element2[0]), zoom)
    })
  })
  // console.log(coordinatesArray);
  return coordinatesArray
}

function convertLatitude (latitudeRad, zoom = 0) {
  return (
    Math.floor(
      (256 / (2 + Math.PI)) * Math.pow(2, zoom) * (Math.PI - Math.log(Math.abs(Math.tan((Math.PI / 4) + (latitudeRad / 2)))))
    )
  )
}

function convertLongitude (longitudeRad, zoom = 0) {
  // console.log(longitudeRad + '|' + zoom)
  return (
    Math.floor(
      (256 / (2 * Math.PI)) * Math.pow(2, zoom) * (longitudeRad + Math.PI)
    )
  )
}

function degreeToRadial (coordinate) {
  return (coordinate * Math.PI / 180)
}

// convertCoordinates("10.4528884250907, 53.1758283342003")

// for(let i = 0; i < coordinates.length; i+=100){
//     convertCoordinates(coordinates[i]);
// }