private void CenterMap()
{
mapCenter.Latitude = Latitude;
mapCenter.Longitude = Longitude;
mapWorldCenter.x = GoogleMapUtil.LonToX(mapCenter.Longitude);
mapWorldCenter.y = GoogleMapUtil.LatToY(mapCenter.Latitude);
mapScale.x = GoogleMapUtil.CalculateScaleX(Latitude, MapTileSizePixels, MapTileScale, MapTileZoomLevel);
mapScale.y = GoogleMapUtil.CalculateScaleY(Longitude, MapTileSizePixels, MapTileScale, MapTileZoomLevel);
var lon1 = GoogleMapUtil.AdjustLonByPixels(Longitude, -MapTileSizePixels / 2, MapTileZoomLevel);
var lat1 = GoogleMapUtil.AdjustLatByPixels(Latitude, MapTileSizePixels / 2, MapTileZoomLevel);
var lon2 = GoogleMapUtil.AdjustLonByPixels(Longitude, MapTileSizePixels / 2, MapTileZoomLevel);
var lat2 = GoogleMapUtil.AdjustLatByPixels(Latitude, -MapTileSizePixels / 2, MapTileZoomLevel);
mapEnvelope = new MapEnvelope(lon1, lat1, lon2, lat2);
lon1 = GoogleMapUtil.AdjustLonByPixels(Longitude, -MapTileSizePixels * 3 / 2, MapTileZoomLevel);
lat1 = GoogleMapUtil.AdjustLatByPixels(Latitude, MapTileSizePixels * 3 / 2, MapTileZoomLevel);
lon2 = GoogleMapUtil.AdjustLonByPixels(Longitude, MapTileSizePixels * 3 / 2, MapTileZoomLevel);
lat2 = GoogleMapUtil.AdjustLatByPixels(Latitude, -MapTileSizePixels * 3 / 2, MapTileZoomLevel);
mapBounds = new MapEnvelope(lon1, lat1, lon2, lat2);
}
public override VectorData LoadElements(CullState cullState)
{
VectorElementVector elements = new VectorElementVector();
MapEnvelope mapViewBounds = cullState.GetProjectionEnvelope(this.Projection);
MapPos min = mapViewBounds.Bounds.Min;
MapPos max = mapViewBounds.Bounds.Max;
// Run query here
LoadData(elements, min, max, cullState.ViewState.Zoom);
return(new VectorData(elements));
}
