Google Map Polygon save in database

Question

User-792764019 posted

Hi,

       I am using Google Map in my application (asp.net and c#) and drawing Polygon on map, now i have to save this polygon in database.But i m not getting how can i get this polygon on my page .DB i m using sql server.

Please can any body help me .

Thanks

VD

Answer 1

User-1446685904 posted

You need to store the latitude and longitude that you get from the polygon.  I had created such application to store the latitude and longitude and i need to produce a circle based on those values.  The below given function expalins this:

  function DrawCircle(point, center) {
            polySmallRadius = document.getElementById('ctl00_body_txtRadius').value;
            if (polySmallRadius == '' || polySmallRadius == null) {
                alert('Please enter Radius');
                return false;
            }

            if (center == 1)
                map.setCenter(new GLatLng(point.y, point.x), polySmallRadius);

            var polyPoints = Array();
            var mapNormalProj = G_NORMAL_MAP.getProjection();
            var mapZoom = map.getZoom();
            var clickedPixel = mapNormalProj.fromLatLngToPixel(point, mapZoom);

            var polyNumSides = 10;
            var polySideLength = 360 / polyNumSides;


            polyNumSides = 20;
            polySideLength = 18;

            for (var a = 0; a < (polyNumSides + 1); a++) {
                var aRad = polySideLength * a * (Math.PI / 180);
                var polyRadius = polySmallRadius;
                var pixelX = clickedPixel.x + polyRadius * Math.cos(aRad);
                var pixelY = clickedPixel.y + polyRadius * Math.sin(aRad);
                var polyPixel = new GPoint(pixelX, pixelY);
                var polyPoint = mapNormalProj.fromPixelToLatLng(polyPixel, mapZoom);
                polyPoints.push(polyPoint);
            }
            var polygon = new GPolygon(polyPoints, "#000000", 2, .5, "#00ff00", .5);
            map.addOverlay(polygon);
        }