谷歌地图fitBounds填充？

问题描述

我们希望在我们的Google地图应用中使用。我们看到了一些例子，但它没有像预期的那样工作。我们试图让div作为google maps控制器，手动扩展边界，但没有任何效果......

We want something like this leaflet fitBounds in our google maps application. We saw a few examples but it doesn't worked as expected. We tried to make the div as a google maps controller, extend the bounds manually but nothing from that worked...

function zoomToBounds(polygon){
bounds = new google.maps.LatLngBounds();
$.each(polygon, function( key, latLng ) {
    bounds.extend(new google.maps.LatLng(latLng.lat, latLng.lng));
});    

/////////////////////////////////////////////////////////////
// We saw a solution like this, but the zooming is a problem
//
// Extend bounds with a fake point:
/////////////////////////////////////////////////////////////
/*
if (this.map.getProjection()) {
    proj = this.map.getProjection();
    latlng = bounds.getSouthWest();
    swPoint = proj.fromLatLngToPoint(latlng);
    latlng2 = proj.fromPointToLatLng({
      x: swPoint.x - 10,
      y: swPoint.y
    });
    bounds.extend(latlng2);
}*/

this.map.fitBounds(bounds);
}

推荐答案

解决方案。

if (this.map.getProjection()) {
    var offsetx = 200;
    var offsety = 0;

    var point1 = this.map.getProjection().fromLatLngToPoint(bounds.getSouthWest());
    this.map.fitBounds(bounds);

    var point2 = new google.maps.Point(
        ( (typeof(offsetx) == 'number' ? offsetx : 0) / Math.pow(2, this.map.getZoom()) ) || 0,
        ( (typeof(offsety) == 'number' ? offsety : 0) / Math.pow(2, this.map.getZoom()) ) || 0
    );          

    var newPoint = this.map.getProjection().fromPointToLatLng(new google.maps.Point(
        point1.x - point2.x,
        point1.y + point2.y
    ));

    bounds.extend(newPoint);
    this.map.fitBounds(bounds);
}

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