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javascript - geoxml v3 在使用多个 KML 文件时突出显示多边形

转载 作者：行者123 更新时间：2023-11-30 00:21:17 31 4
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需要一张葡萄牙 map ，用户可以在点击时选择地区，我关注了this example和 this one .问题是我为每个要绘制为多边形的地区使用 KML 文件，而不是为所有地区多边形使用 KML。

已经在这里搜索了很多问题，还尝试更改 useTheData () 回调函数以包含一个额外的 for 循环，如下所示，但没有成功...

    function useTheData(doc) {

        var sidebarHtml = '<table><tr><td><a href="javascript:showAll();">Show All</a></td></tr>';

        for (var j = 0; j < doc.length ; j++) { 
          ...
        }
        sidebarHtml += "</table>";

        document.getElementById("map_barralateral").innerHTML = sidebarHtml;
    };

将鼠标悬停在 map 上的地区工作正常，但是当单击侧边栏上的突出显示链接时，它默认突出显示使用列表的最后一个 KML 文件创建的多边形...

有办法解决这个问题吗？

我的完整代码在这里:http://afonsogomes.com/mapas 

<!DOCTYPE html>
<html lang="pt">

<head>
    <meta charset="utf-8">
    <title>XXXXX</title>
    <style>
    html,body {margin: 0;padding: 0;}
    #map_canvas, #map_barralateral {width: 300px;height: 500px;margin: 0;padding: 0;float: left;background-color: #e5e3df;}
    #map_canvas{height: 520px;}
    #map_barralateral{width: 300px;font-family: Arial, sans-serif;font-size: 12px;padding: 10px;}
    #loaddiv {width: 620px;background-color: #78A04C;border: none;padding: 20px 0;font-family: Arial, sans-serif;color: #FFF;font-weight: 700;text-align: center;position: absolute;left: 0;top: 200px;margin: 0 auto;filter: alpha(opacity=90);opacity: .90;z-index: 100;}
    </style>
    <script src="../js/jquery-1.11.1.min.js"></script>
    <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
    <script type="text/javascript" src="http://geoxml3.googlecode.com/svn/branches/polys/geoxml3.js"></script>
    <script type="text/javascript" src="http://geoxml3.googlecode.com/svn/trunk/ProjectedOverlay.js"></script>

    <script>
        var geoXml = null;
        var geoXmlDoc = null;
        var map = null;
        var myLatLng = null;
        var myGeoXml3Zoom = true;
        var sidebarHtml = "";

        var filename_example = ["kml/porto.kml", "kml/faro.kml", "kml/braganca.kml", "kml/evora.kml"];
        function initialize() {
           myLatLng = new google.maps.LatLng(39.96293, -8.03770);

            var myOptions = {
                zoom: 18,
                center: myLatLng,

                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            map = new google.maps.Map(document.getElementById("map_canvas"),
                myOptions);

            showLoad();

            geoXml = new geoXML3.parser({
                map: map,
                zoom: myGeoXml3Zoom,
                suppressInfoWindows: true,
                singleInfoWindow: false,
                afterParse: useTheData
            });
            google.maps.event.addListener(geoXml, 'parsed', function () {
                hideLoad();
            });

            geoXml.parse(filename_example);
        };

        function kmlHighlightPoly(poly) {
            for (var i = 0; i < geoXmlDoc.gpolygons.length; i++) {
                if (i == poly) {
                    geoXmlDoc.gpolygons[i].setOptions({ fillColor: "#0000FF", strokeColor: "#0000FF" });
                } else {
                    geoXmlDoc.gpolygons[i].setOptions({ fillColor: "#FF0000", strokeColor: "#FF0000" });
                }
            }
        }

        function showAll() {
            map.fitBounds(geoXmlDoc.bounds);
            for (var i = 0; i < geoXmlDoc.gpolygons.length; i++) {
                geoXmlDoc.gpolygons[i].setMap(map);
            }
        }

        function highlightPoly(poly) {
            google.maps.event.addListener(poly, "mouseover", function () {
                poly.setOptions({ fillColor: "#FF0000", strokeColor: "#FF0000" });
            });
            google.maps.event.addListener(poly, "mouseout", function () {
                poly.setOptions({ fillColor: "#78A04C", strokeColor: "#78A04C", fillOpacity: 0.4 });
            });
        }

        function useTheData(doc) {

            var sidebarHtml = '<table><tr><td><a href="javascript:showAll();">Show All</a></td></tr>';

            for (var j = 0; j < doc.length ; j++) { // Added by me to parse all kml files to the map

                geoXmlDoc = doc[j];
                for (var i = 0; i < doc[j].gpolygons.length; i++) {
                    sidebarHtml += '<tr><td>' + doc[j].placemarks[i].name + ' - <a   href="javascript:kmlHighlightPoly(' + j + ');">highlight</a><br></td></tr>';
                    highlightPoly(doc[j].gpolygons[i]);
                }
            }
            sidebarHtml += "</table>";

            document.getElementById("map_barralateral").innerHTML = sidebarHtml;
        };

        function hideLoad() {
            var loaddiv = document.getElementById("loaddiv");
            if (loaddiv == null) {
                alert("Sorry can't find the loaddiv");
                return;
            }
            loaddiv.style.visibility = "hidden";
        }

        function showLoad() {
            var loaddiv = document.getElementById("loaddiv");
            if (loaddiv == null) {
                alert("Sorry can't find your loaddiv");
                return;
            }
            loaddiv.style.visibility = "visible";
        }
    </script>
</head>

<body onload="initialize()">
    <div id="loaddiv">A carregar.....&#160;&#160;&#160; Por favor aguarde!</div>
    <div id="map_canvas"></div>
    <div id="map_barralateral"></div>
    <div id="map_status"></div>
</body>
</html>

最佳答案

您还需要修改 kmlHighlightPoly 以考虑使用多个 KML 文件:

function kmlHighlightPoly(doc,poly) {
  for (var j=0; j < geoXmlDoc.length; j++) {
    for (var i = 0; i < geoXmlDoc[doc].gpolygons.length; i++) {
        if ((j == doc) && (i == poly)) {
            geoXmlDoc[j].gpolygons[i].setOptions({ fillColor: "#FF0000", strokeColor: "#FF0000" });
        } else {
            geoXmlDoc[j].gpolygons[i].setOptions({ fillColor: "#78A04C", strokeColor: "#78A04C", fillOpacity: 0.4 });
        }
    }
  }
}

并更改 useTheData 以将文档传递给 kmlHighlightPoly 函数。

function useTheData(doc) {
    var sidebarHtml = '<table><tr><td><a href="javascript:showAll();">Show All</a></td></tr>';

    for (var j = 0; j < doc.length ; j++) { // Added by me to parse all kml files to the map

        geoXmlDoc = doc;
        for (var i = 0; i < doc[j].gpolygons.length; i++) {
            sidebarHtml += '<tr><td>' + doc[j].placemarks[i].name + ' - <a   href="javascript:kmlHighlightPoly('+j+','+i+');">highlight</a><br></td></tr>';
            highlightPoly(doc[j].gpolygons[i]);
        }
    }
    sidebarHtml += "</table>";
    document.getElementById("map_barralateral").innerHTML = sidebarHtml;
};

working example

关于javascript - geoxml v3 在使用多个 KML 文件时突出显示多边形，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33036622/

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