private static Geometry GetGeometryFromBuffer(byte[] geomBuffer, SpatialReference sr)
{
var geomType = GetGeometryType(geomBuffer);
switch (geomType)
{
case GeometryType.Point:
{
int offset = 4;
double x = DoubleWithNaN(BitConverter.ToDouble(geomBuffer, offset));
offset += 8;
double y = DoubleWithNaN(BitConverter.ToDouble(geomBuffer, offset));
var mp = MapPointBuilderEx.FromEsriShape(geomBuffer, sr);
//System.Diagnostics.Debug.WriteLine($@"x: {x} = {mp.X} y: {y} = {mp.Y}");
return(mp);
}
case GeometryType.Polyline:
{
var line = PolylineBuilderEx.FromEsriShape(geomBuffer, sr);
return(line);
}
case GeometryType.Polygon:
{
var poly = PolygonBuilderEx.FromEsriShape(geomBuffer, sr);
return(poly);
}
}
return(null);
}
/// <summary>
/// Custom interface specific to the way the sample is implemented.
/// </summary>
public PluginRow FindRow(long oid, IEnumerable <string> columnFilter, SpatialReference srout)
{
Geometry shape = null;
List <object> values = new List <object>();
var row = _table.Rows.Find(oid);
//The order of the columns in the returned rows ~must~ match
//GetFields. If a column is filtered out, an empty placeholder must
//still be provided even though the actual value is skipped
var columnNames = this.GetFields().Select(col => col.Name.ToUpper()).ToList();
foreach (var colName in columnNames)
{
if (columnFilter.Contains(colName))
{
//special handling for shape
if (colName == "SHAPE")
{
var buffer = row["SHAPE"] as Byte[];
shape = MapPointBuilderEx.FromEsriShape(buffer, _sr);
if (srout != null)
{
if (!srout.Equals(_sr))
{
shape = GeometryEngine.Instance.Project(shape, srout);
}
}
values.Add(shape);
}
else
{
values.Add(row[colName]);
}
}
else
{
values.Add(System.DBNull.Value);//place holder
}
}
return(new PluginRow()
{
Values = values
});
}