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VEShape.SetMinZoomLevel Method

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Sets the minimum zoom level at which the shape is visible.


VEShape.SetMinZoomLevel(level);

Parameters

Parameter Description

level

An integer specifying the minimum zoom level.

This method throws an exception if the level parameter is either less than 1 or greater than the current maximum zoom level.

The default minimum zoom level for a shape is 1.

If the minimum and maximum zoom levels are equal, the shape is visible only at that zoom level.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
   <head>
      <title></title>
      <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

      <script type="text/javascript" src="http://ecn.dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=6.3"></script>

      <script type="text/javascript">
         var map = null;
         var zLevel;
         var minZoom = 3;
         var maxZoom = 6;

         var kindaRed   = new VEColor(255,   0,   0, 0.7);
         var kindaGreen = new VEColor(0,   255,   0, 0.7);
         var kindaBlue  = new VEColor(0,     0, 255, 0.7);

         var shape1 = null;
         var shape2 = null;
         var shape3 = null;

         var topLeftS1  = new VELatLong(45.33, -111.27);
         var topRightS1 = new VELatLong(45.33,  -96.86);
         var botRightS1 = new VELatLong(37.30,  -96.86);
         var botLeftS1  = new VELatLong(37.30, -111.27);

         var topLeftS2  = new VELatLong(41.24, -109.51);
         var topRightS2 = new VELatLong(41.24,  -94.39);
         var botRightS2 = new VELatLong(33.50,  -94.39);
         var botLeftS2  = new VELatLong(33.50, -109.51);

         var topLeftS3  = new VELatLong(49.32, -104.32);
         var topRightS3 = new VELatLong(49.32,  -89.47);
         var botRightS3 = new VELatLong(36.88,  -89.47);
         var botLeftS3  = new VELatLong(36.88, -104.32);

         function GetMap()
         {
            map = new VEMap('myMap');
            map.LoadMap();

            shape1 = new VEShape(VEShapeType.Polygon, new Array(topLeftS1, topRightS1, botRightS1, botLeftS1));
            shape1.HideIcon();
            shape1.SetFillColor(kindaRed);

            zLevel = shape1.GetMinZoomLevel();

            if(zLevel == null || zLevel < minZoom)
            {
               shape1.SetMinZoomLevel(minZoom);
            }

            zLevel = shape1.GetMaxZoomLevel();

            if(zLevel == null || zLevel > maxZoom)
            {
               shape1.SetMaxZoomLevel(maxZoom);
            }

            shape2 = new VEShape(VEShapeType.Polygon, new Array(topLeftS2, topRightS2, botRightS2, botLeftS2));
            shape2.HideIcon();
            shape2.SetFillColor(kindaGreen);

            zLevel = shape2.GetMinZoomLevel();

            if(zLevel == null || zLevel < minZoom)
            {
               shape2.SetMinZoomLevel(minZoom);
            }

            zLevel = shape2.GetMaxZoomLevel();

            if(zLevel == null || zLevel > maxZoom)
            {
               shape2.SetMaxZoomLevel(maxZoom);
            }

            shape3 = new VEShape(VEShapeType.Polygon, new Array(topLeftS3, topRightS3, botRightS3, botLeftS3));
            shape3.HideIcon();
            shape3.SetFillColor(kindaBlue);

            zLevel = shape3.GetMinZoomLevel();

            if(zLevel == null || zLevel < minZoom)
            {
               shape3.SetMinZoomLevel(minZoom);
            }

            zLevel = shape3.GetMaxZoomLevel();

            if(zLevel == null || zLevel > maxZoom)
            {
               shape3.SetMaxZoomLevel(maxZoom);
            }

            map.AddShape(shape1);
            map.AddShape(shape2);
            map.AddShape(shape3);
         }

         function MoveShape(s)
         {
            // Get current highest zindex
            var zindex = shape1.GetZIndexPolyShape();
            var tz;

            tz = shape2.GetZIndexPolyShape();

            if(tz > zindex)
            {
               zindex = tz;
            }

            tz = shape3.GetZIndexPolyShape();

            if(tz > zindex)
            {
               zindex = tz;
            }

            // Increment new high zindex
            zindex++;

            if(s == "1")
            {
               shape1.SetZIndex(null, zindex);
            }

            if(s == "2")
            {
               shape2.SetZIndex(null, zindex);
            }

            if(s == "3")
            {
               shape3.SetZIndex(null, zindex);
            }
         }
      </script>
   </head>
   <body onload="GetMap();">
      <div id='myMap' style="position:relative; width:600px; height:400px;"></div>
      <p>&nbsp;</p>
      <input id="btnMvS1" type="button" value="Move Red Shape to front" name="moves1" onclick="MoveShape('1');">
      <br/>
      <input id="btnMvS2" type="button" value="Move Green Shape to front" name="moves2" onclick="MoveShape('2');">
      <br/>
      <input id="btnMvS3" type="button" value="Move Blue Shape to front" name="moves3" onclick="MoveShape('3');">
   </body>
</html>

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