protected override void Serialize(SharpMap.Layers.Layer layer, XmlElement lyrElement)
{
// << Check layer on null>>
if (layer == null)
{
lyrElement.InnerText = MapSerializerConst.NullValue;
}
else
{
//Add attr TYPE
XmlAttribute typeAttribute = lyrElement.OwnerDocument.CreateAttribute("Type");
typeAttribute.Value = layer.GetType().ToString();
lyrElement.Attributes.Append(typeAttribute);
switch (layer.GetType().ToString())
{
case "eidss.gis.Layers.EidssSystemDbLayer":
case "eidss.gis.Layers.EidssExtSystemDbLayer":
EidssDbLayerSerializer.Serialize((EidssDbLayer)layer, lyrElement);
break;
case "eidss.gis.Layers.EidssUserDbLayer":
case "eidss.gis.Layers.EidssUserBufZoneLayer":
EidssUserDbLayerSerializer.Serialize((EidssUserDbLayer)layer, lyrElement);
break;
case "eidss.gis.Layers.EidssLabelLayer":
case "eidss.gis.Layers.EidssSystemLabelLayer":
case "eidss.gis.Layers.EidssExtSystemLabelLayer":
EidssLabelLayerSerializer.Serialize((EidssLabelLayer)layer, lyrElement);
break;
case "GIS_V4.Layers.VectorLayer":
VectorLayerSerializer.Serialize((VectorLayer)layer, lyrElement);
break;
case "GIS_V4.Layers.LabelLayer":
LabelLayerSerializer.Serialize((LabelLayer)layer, lyrElement);
break;
case "GIS_V4.Layers.GdalRasterLayer":
GdalRasterLayerSerializer.Serialize((GdalRasterLayer)layer, lyrElement);
break;
case "GIS_V4.Layers.LayerGroup":
EidssLayerGroupSerializer.Instance.Serialize((LayerGroup)layer, lyrElement);
break;
case "GIS_V4.Layers.TileLayer":
TileLayerSerializer.Serialize((TileLayer)layer, lyrElement);
break;
default:
throw new NotImplementedException();
}
}
}
/// <summary>
/// 获得当前影像的范围
/// </summary>
/// <param name="fileName"></param>
/// <param name="isShapeFile"></param>
/// <param name="gcsWkt"></param>
/// <returns></returns>
public static Envelop GetEnvelop(string fileName, bool isShapeFile, string gcsWkt)
{
ICoordinateSystem srcCoor = null;
SharpMap.Layers.Layer layer = null;
if (isShapeFile)
{
SharpMap.Layers.VectorLayer l = new SharpMap.Layers.VectorLayer(Path.GetFileNameWithoutExtension(fileName));
l.DataSource = new SharpMap.Data.Providers.ShapeFile(fileName, true);
l.SRID = 4326;
srcCoor = ((SharpMap.Data.Providers.ShapeFile)l.DataSource).CoordinateSystem;
layer = l;
}
else
{
SharpMap.Layers.GdalRasterLayer l = new SharpMap.Layers.GdalRasterLayer(Path.GetFileNameWithoutExtension(fileName), fileName);
l.SRID = 4326;
l.Enabled = true;
srcCoor = l.GetProjection();
layer = l;
}
Envelop envelop = new Envelop();
//if (srcCoor != null)
//{
// CoordinateSystemFactory cFac = new CoordinateSystemFactory();
// ICoordinateSystem tarCoor = cFac.CreateFromWkt(gcsWkt);
// ICoordinateTransformation transform = null;
// try
// {
// transform = new CoordinateTransformationFactory().CreateFromCoordinateSystems(srcCoor, tarCoor);
// }
// catch (Exception e)
// {
// return new Envelop();
// }
// SharpMap.Geometries.BoundingBox imageBox = GeometryTransform.TransformBox(layer.Envelope, transform.MathTransform);
// envelop.North = imageBox.Top;
// envelop.South = imageBox.Bottom;
// envelop.West = imageBox.Left;
// envelop.East = imageBox.Right;
//}
//else
//{
envelop.East = layer.Envelope.Right;
envelop.West = layer.Envelope.Left;
envelop.North = layer.Envelope.Top;
envelop.South = layer.Envelope.Bottom;
//}
return(envelop);
}
