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如何利用Skyline的TerraExplorer Pro 6.5提供的API接口实现矢量图层数据的动态投影

Skyline 支持国内常见的地图投影坐标系，包括WGS84、Beijing54、西安80、2000坐标系等，也可以自定义坐标系，比如一些做过参数变换加密的坐标系等。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
    <script type="text/javascript">
        function Test() {
            try {
                var sg = CreateSGObj();
                //alert(sg.CoordServices.SourceCoordinateSystem.WellKnownText);
                ConvertPos(-635585.73259, 4582417.28002);
            }
            catch (e) {
                alert(e);
            }
        }

        function ConvertPos(x,y) {
            try {
                var sg = CreateSGObj();
                var fCoord = CreateCoord1();
                //alert(fCoord.WellKnownText);
                var tCoord = CreateCoord2();
                //alert(tCoord.WellKnownText);
                var Coord2D = sg.CoordServices.Reproject(fCoord, tCoord, x, y);
                alert(Coord2D);
                sg.Navigate.FlyTo(Coord2D);
            }
            catch (e) {
                alert(e);
            }
        }

        function CreateCoord1() {
            var sg = CreateSGObj();
            return sg.CoordServices.CreateCoordinateSystem("PROJCS["Xian 1980 / 3-degree Gauss-Kruger CM 132E",GEOGCS["Xian 1980",DATUM["Xian_1980",SPHEROID["IAG 1975",6378140,298.257,AUTHORITY["EPSG","7049"]],AUTHORITY["EPSG","6610"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4610"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",132],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["X",NORTH],AXIS["Y",EAST],AUTHORITY["EPSG","2389"]]");
        }

        function CreateCoord2() {
            var sg = CreateSGObj();
            //return sg.CoordServices.CreateCoordinateSystem("GEOGCS['WGS84 Coordinate System',DATUM['WGS 1984',SPHEROID['WGS1984',6378137,298.257223563],TOWGS84[0,0,0,0,0,0,0],AUTHORITY['EPSG','6326']],PRIMEM['Greenwich',0],UNIT['degree',0.0174532925199433],AUTHORITY['EPSG','4326'],AUTHORITY['SBMG','LAT-LONG,LAT-LONG,WGS84,METERS']]");
            return sg.CoordServices.SourceCoordinateSystem;
        }
                
        //------------------------------------------------------------
        // 创建sgworld对象  赵贺 2011.04.07.
        //------------------------------------------------------------
        function CreateSGObj() {
            var obj = $("sgworld");
            if (obj == null) {
                obj = document.createElement('object');
                document.body.appendChild(obj);
                obj.name = "sgworld";
                obj.id = "sgworld";
                obj.classid = "clsid:3a4f9197-65a8-11d5-85c1-0001023952c1";
            }
            return obj;
        }
        function $(id) {
            return window.document.getElementById(id);
        }
    </script>
</head>
<body >
    <input id="Button1" type="button" value="button" onclick="Test()" />
    <OBJECT ID="TerraExplorer3DWindow" CLASSID="CLSID:3a4f9192-65a8-11d5-85c1-0001023952c1" width="600px" height="400px" ></OBJECT>
    <OBJECT ID="TerraExplorerInformationWindow" CLASSID="CLSID:3a4f9193-65a8-11d5-85c1-0001023952c1" width="300px" height="400px" ></OBJECT>
</body>
</html>

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原文地址：https://www.cnblogs.com/yitianhe/p/3419194.html