public ObjectModels.Common.IEnvelope GetEnvelope()
{
var env = _geom.Envelope();
var ll = env.GetLowerLeftCoordinate();
var ur = env.GetUpperRightCoordinate();
return(ObjectFactory.CreateEnvelope(ll.X, ll.Y, ur.X, ur.Y));
}
/// <summary>
/// Установка зумирования и активной выборки (запуск через командную строку - отсюда название)
/// </summary>
/// <param name="sel_base">выборка, которую следует отобразить</param>
internal static void ThroughAssZoomAndSelection(MgSelectionBase sel_base)
{
internal_saved_selection = AcMapFeatureEntityService.AddFeaturesToSelectionSet(null, sel_base); // преобразование в SelectionSet и обратно,
sel_base = AcMapFeatureEntityService.GetSelection(internal_saved_selection); // иначе дает сбой метод GetSelectedFeatures()
MgEnvelope extents = new MgEnvelope();
MgReadOnlyLayerCollection layers = sel_base.GetLayers();
foreach (MgLayerBase layer in layers)
{
MgFeatureReader ftr_reader = sel_base.GetSelectedFeatures(layer, layer.FeatureClassName, false);
string geom_prop_name = ftr_reader.GetClassDefinition().DefaultGeometryPropertyName;
while (ftr_reader.ReadNext())
{
MgByteReader byte_reader = ftr_reader.GetGeometry(geom_prop_name);
MgAgfReaderWriter agf_reader_writer = new MgAgfReaderWriter();
MgGeometry curr_geom = agf_reader_writer.Read(byte_reader);
extents.ExpandToInclude(curr_geom.Envelope());
}
}
// зумирование и вызов функции выбора через командную строку
Core.no_handle_selection = true; // чтобы изменение выборки не обрабатывалось
string zoom_str;
if ((extents.Width == 0) && (extents.Width == extents.Height))
{
zoom_str = "'_zoom _c "
+ extents.LowerLeftCoordinate.X.ToString() + "," + extents.LowerLeftCoordinate.Y.ToString() + " ";
}
else
{
zoom_str = "'_zoom _w "
+ (extents.LowerLeftCoordinate.X - extents.Width / 2).ToString()
+ ","
+ (extents.LowerLeftCoordinate.Y - extents.Height / 2).ToString()
+ " "
+ (extents.UpperRightCoordinate.X + extents.Width / 2).ToString()
+ ","
+ (extents.UpperRightCoordinate.Y + extents.Height / 2).ToString();
}
Core.SendStringToExecute(zoom_str + "\n"
+ "ThroughAssZoomAndSelectionHelperFunction\n"
, true, false, false);
}
public override void Invoke()
{
var viewer = this.Viewer;
var sel = viewer.GetSelection();
var selLayers = sel.GetLayers();
if (selLayers == null)
{
MessageBox.Show(Strings.TextNoSelection);
return;
}
//This doesn't work :(
//
//var provider = viewer.GetProvider();
//var featSvc = (MgFeatureService)provider.CreateService(MgServiceType.FeatureService);
//var ext = sel.GetExtents(featSvc);
//var ll = ext.LowerLeftCoordinate;
//var ur = ext.UpperRightCoordinate;
//viewer.ZoomToExtents(ll.X, ll.Y, ur.X, ur.Y);
MgEnvelope env = new MgEnvelope();
if (_agfRw == null)
{
_agfRw = new MgAgfReaderWriter();
}
for (var i = 0; i < selLayers.GetCount(); i++)
{
var layer = selLayers.GetItem(i);
var fr = sel.GetSelectedFeatures(layer, layer.FeatureClassName, false);
try
{
string geomName = layer.GetFeatureGeometryName();
while (fr.ReadNext())
{
if (!fr.IsNull(geomName))
{
MgByteReader agf = null;
MgGeometry geom = null;
try
{
agf = fr.GetGeometry(geomName);
geom = _agfRw.Read(agf);
env.ExpandToInclude(geom.Envelope());
}
finally
{
if (agf != null)
{
agf.Dispose();
agf = null;
}
if (geom != null)
{
geom.Dispose();
geom = null;
}
}
}
}
}
finally
{
fr.Close();
}
}
var ll = env.LowerLeftCoordinate;
var ur = env.UpperRightCoordinate;
viewer.ZoomToExtents(ll.X, ll.Y, ur.X, ur.Y);
}