let GPS_position;

​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  textSize(32);

  if (GPS_position) {

    text("latitude: " + GPS_position.coords.latitude, 5, 100);

    text("longitude: " + GPS_position.coords.longitude, 5, 200);

  }

  navigator.geolocation.getCurrentPosition(

    // Success callback

    (position) => {

      console.log("pos");

      GPS_position = position;

      /*

          position is an object containing various information about

          the acquired device location:

​

          position = {

              coords: {

                  latitude - Geographical latitude in decimal degrees.

                  longitude - Geographical longitude in decimal degrees. 

                  altitude - Height in meters relative to sea level.

                  accuracy - Possible error margin for the coordinates in meters. 

                  altitudeAccuracy - Possible error margin for the altitude in meters. 

                  heading - The direction of the device in degrees relative to north. 

                  speed - The velocity of the device in meters per second.

              }

              timestamp - The time at which the location was retrieved.

          }

          */

    },

​

    // Optional error callback

    function (error) {

      console.log(error);

      /* 

          In the error object is stored the reason for the failed attempt:

​

          error = {

              code - Error code representing the type of error 

                      1 - PERMISSION_DENIED

                      2 - POSITION_UNAVAILABLE

                      3 - TIMEOUT

​

              message - Details about the error in human-readable format.

          }

          */

    },

  );

}

​