protected override void Init()
{
_isReady = true;
_isInited = true;
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
}
protected override void Init()
{
if (_reader == null)
{
BeginRead();
}
string prjFile = Path.Combine(Path.GetDirectoryName(_fileUrl),
Path.GetFileNameWithoutExtension(_fileUrl) + ".prj");
try
{
_spatialRef = SpatialReferenceFactory.GetSpatialReferenceByPrjFile(prjFile);
}
catch (Exception ex)
{
Log.WriterException(ex);
}
_fullEnvelope = _reader.Envelope.Clone() as Envelope;
AdjustZeroWidthEnvelope(_fullEnvelope);
_shapeType = _reader.ShapeType;
_coordType = _spatialRef != null && _spatialRef.ProjectionCoordSystem != null ? enumCoordinateType.Projection : enumCoordinateType.Geographic;
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_fields = _reader.Fields;
_isInited = true;
}
public MemoryDataSource(string name,
enumShapeType shapeType
)
: base(name)
{
_shapeType = shapeType;
_coordType = enumCoordinateType.Geographic;
_gridDefinition = new GridDefinition(360, 180);
_fullEnvelope = new Envelope(-180, -90, 180, 90);
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_grid = new Grid(0, _fullEnvelope.Clone() as Envelope, new Feature[] { });
}
public MemoryDataSource(string name,
enumShapeType shapeType,
enumCoordinateType coordType,
Envelope fullEnvelope
)
: base(name)
{
_shapeType = shapeType;
_coordType = enumCoordinateType.Geographic;
_gridDefinition = new GridDefinition((float)(fullEnvelope.Width + float.Epsilon),
(float)(fullEnvelope.Height + float.Epsilon));
_fullEnvelope = fullEnvelope;
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_grid = new Grid(0, _fullEnvelope.Clone() as Envelope, new Feature[] { });
}
protected override void Init()
{
if (_reader == null)
{
BeginRead();
}
if (_reader != null)
{
_spatialRef = _reader.SpatialReference;
_coordType = _spatialRef != null && _spatialRef.ProjectionCoordSystem != null ? enumCoordinateType.Projection : enumCoordinateType.Geographic;
_fields = _reader.Fields;
_fullEnvelope = _reader.Envelope.Clone() as Envelope; //这个非常重要
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_shapeType = _reader.ShapeType;
_isInited = true;
}
}
protected override void Init()
{
FetClassProperty pro = GetFetClassProperty();
if (pro != null)
{
_fields = pro.Fields;
_fullEnvelope = pro.FullEnvelope.Clone() as Envelope;
_shapeType = pro.ShapeType;
_spatialRef = pro.SpatialReference;
_coordType = pro.CoordinateType;
_featureCount = pro.FeatureCount;
if (_shapeType == enumShapeType.Point)
{
TryAdjustGridDefinition();
}
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_isInited = true;
}
}
