rotate a .gif image on google maps api v3?

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栀梦
栀梦 2020-11-28 13:48

I find lots of answers on this question but not one that works when using .gif images and not markers. To use .gif images (and also animated gifs) I use code (which works)<

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  • 2020-11-28 14:44

    Another way to do it is to use Custom Overlay.

        .
        .
        var overlay = new google.maps.OverlayView();
        overlay.draw = function() {
            this.getPanes().markerLayer.id = 'markerLayer';
        }
        overlay.setMap(map);
        .
        .
        var deg = 270;
        document.querySelector("#markerLayer img").style.transform = 'rotate(' + deg + 'deg)';
        .
    

    See this demo pen for more clarity.

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  • 2020-11-28 14:45

    The "store_id" property of the marker doesn't give you access to the DOM element which contains the image. If you have a unique icon for each marker, you can grab it using its URL with JQuery, then apply a CSS transform to it:

    $('img[src="http://www.geocodezip.com/mapIcons/boat-10-64.gif"]').css({
      'transform': 'rotate(45deg)'
    });
    

    Note: this will only work for markers with optimized: false

    • proof of concept fiddle
    • proof of concept fiddle rotating a .png image

    code snippet:

    function initialize() {
      var map = new google.maps.Map(
        document.getElementById("map_canvas"), {
          center: new google.maps.LatLng(37.47949, -122.083168),
          zoom: 13,
          mapTypeId: google.maps.MapTypeId.ROADMAP
        });
      var image = {
        url: 'http://www.geocodezip.com/mapIcons/boat-10-64.gif',
        size: new google.maps.Size(75, 75),
        origin: new google.maps.Point(0, 0),
        anchor: new google.maps.Point(0, 32),
        scaledSize: new google.maps.Size(50, 50)
      };
      var marker = new google.maps.Marker({
        position: map.getCenter(),
        map: map,
        icon: image,
        store_id: "mkrID",
        optimized: false
      });
      var rotationAngle = 10;
      google.maps.event.addListenerOnce(map, 'idle', function() {
        setInterval(function() {
          $('img[src="http://www.geocodezip.com/mapIcons/boat-10-64.gif"]').css({
            'transform': 'rotate(' + rotationAngle + 'deg)'
          });
          rotationAngle += 10;
        }, 1000);
      });
    }
    google.maps.event.addDomListener(window, "load", initialize);
    html,
    body,
    #map_canvas {
      height: 100%;
      width: 100%;
      margin: 0px;
      padding: 0px
    }
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
    <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
    <div id="map_canvas"></div>

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