/// <summary>
/// This method gets the map object out of the mapfactory with given mapalias and
/// Adds a point feature into a temp layer, exports it to memory stream and streams it back to client.
/// </summary>
/// <remarks>None</remarks>
public override void Process()
{
// Extract points from the string
System.Drawing.Point [] points = this.ExtractPoints(this.DataString);
MapControlModel model = MapControlModel.GetModelFromSession();
model.SetMapSize(MapAlias, MapWidth, MapHeight);
MapInfo.Mapping.Map map = model.GetMapObj(MapAlias);
if (map == null)
{
return;
}
// There will be only one point, convert it to spatial
MapInfo.Geometry.DPoint point;
map.DisplayTransform.FromDisplay(points[0], out point);
IMapLayer lyr = map.Layers[SampleConstants.TempLayerAlias];
if (lyr == null)
{
TableInfoMemTable ti = new TableInfoMemTable(SampleConstants.TempTableAlias);
// Make the table mappable
ti.Columns.Add(ColumnFactory.CreateFeatureGeometryColumn(map.GetDisplayCoordSys()));
ti.Columns.Add(ColumnFactory.CreateStyleColumn());
Table table = MapInfo.Engine.Session.Current.Catalog.CreateTable(ti);
map.Layers.Insert(0, new FeatureLayer(table, "templayer", SampleConstants.TempLayerAlias));
}
lyr = map.Layers[SampleConstants.TempLayerAlias];
if (lyr == null)
{
return;
}
FeatureLayer fLyr = lyr as FeatureLayer;
MapInfo.Geometry.Point geoPoint = new MapInfo.Geometry.Point(map.GetDisplayCoordSys(), point);
// Create a Point style which is a red pin point.
SimpleVectorPointStyle vs = new SimpleVectorPointStyle();
vs.Code = 67;
vs.Color = Color.Red;
vs.PointSize = Convert.ToInt16(24);
vs.Attributes = StyleAttributes.PointAttributes.BaseAll;
vs.SetApplyAll();
// Create a Feature which contains a Point geometry and insert it into temp table.
Feature pntFeature = new Feature(geoPoint, vs);
MapInfo.Data.Key key = fLyr.Table.InsertFeature(pntFeature);
// Send contents back to client.
MemoryStream ms = model.GetMap(MapAlias, MapWidth, MapHeight, ExportFormat);
StreamImageToClient(ms);
}