public virtual Vertex this[int index] {
get {
return(index < Count?CreateVertex(
MiApi.mitab_c_get_vertex_x(Part.Feature.Handle, Part.Index, index),
MiApi.mitab_c_get_vertex_y(Part.Feature.Handle, Part.Index, index)) : null);
}
}
public virtual Topology.Geometries.Coordinate this[int index]
{
get
{
return(index < Count ? new Topology.Geometries.Coordinate(MiApi.mitab_c_get_vertex_x(Part.Feature.Handle, Part.Index, index), MiApi.mitab_c_get_vertex_y(Part.Feature.Handle, Part.Index, index)) : null);
}
}
public void Dispose(bool disposing)
{
if (disposing && !disposed)
{
MiApi.mitab_c_destroy_feature(this.Handle);
disposed = true;
}
}
protected internal Feature(Layer layer, int featureId)
{
this.Id = featureId;
this.Layer = layer;
this.Handle = MiApi.mitab_c_read_feature(layer.Handle, featureId);
this.Type = MiApi.mitab_c_get_type(Handle);
this.Parts = CreateParts(this);
}
protected internal Fields(Layer layer) : base(MiApi.mitab_c_get_field_count(layer.Handle))
{
fields = new Field[Count];
for (int i = 0; i < Count; i++)
{
fields[i] = CreateField(layer, i);
}
}
protected internal Field(Layer layer, int i)
{
this.Layer = layer;
this.Index = i;
this.Name = MiApi.mitab_c_get_field_name(layer.Handle, i);
this.Type = MiApi.mitab_c_get_field_type(layer.Handle, i);
this.Precision = (short)MiApi.mitab_c_get_field_precision(layer.Handle, i);
this.Width = MiApi.mitab_c_get_field_width(layer.Handle, i);
}
protected internal Layer(string fileName)
{
this.Handle = MiApi.mitab_c_open(fileName);
if (this.Handle == IntPtr.Zero)
{
throw new FileNotFoundException("File " + fileName + " not found", fileName);
}
this.Fields = CreateFields();
this.Features = CreateFeatures();
this.FileName = fileName;
}
protected internal DataValues(Feature feature) : base(MiApi.mitab_c_get_field_count(feature.Layer.Handle))
{
Values = new object[Count];
for (int i = 0; i < Count; i++)
{
switch (feature.Layer.Fields[i].Type)
{
case FieldType.TABFT_Char:
Values[i] = MiApi.mitab_c_get_field_as_string(feature.Handle, i);
break;
case FieldType.TABFT_Date:
double d = MiApi.mitab_c_get_field_as_double(feature.Handle, i);
if (d == 0)
{
Values[i] = null;
}
else
{
int year = (int)(d / 10000);
int month = (int)((d - year * 10000) / 100);
int day = (int)(d - year * 10000 - month * 100);
Values[i] = new DateTime(year, month, day);
}
break;
case FieldType.TABFT_Decimal:
Values[i] = MiApi.mitab_c_get_field_as_double(feature.Handle, i);
break;
case FieldType.TABFT_Float:
Values[i] = (float)MiApi.mitab_c_get_field_as_double(feature.Handle, i);
break;
case FieldType.TABFT_Integer:
Values[i] = (int)MiApi.mitab_c_get_field_as_double(feature.Handle, i);
break;
case FieldType.TABFT_Logical:
Values[i] = MiApi.mitab_c_get_field_as_string(feature.Handle, i) == "T"? true : false;
break;
case FieldType.TABFT_SmallInt:
Values[i] = (short)MiApi.mitab_c_get_field_as_double(feature.Handle, i);
break;
}
}
}
public Feature GetFirst()
{
return(this[MiApi.mitab_c_next_feature_id(Layer.Handle, -1)]);
}
protected internal Features(Layer layer) :
base(MiApi.mitab_c_get_feature_count(layer.Handle))
{
this.Layer = layer;
}
public override bool MoveNext()
{
return((eIdx = MiApi.mitab_c_next_feature_id(layer.Handle, eIdx)) != -1);
}
/// <summary>
/// Convenience method to return the next Feature in the file.
/// </summary>
/// <returns>A following feature in the file.</returns>
public Feature GetNext()
{
return(new Feature(this.Layer, MiApi.mitab_c_next_feature_id(Layer.Handle, this.Id)));
}
protected internal Parts(Feature feature) : base(MiApi.mitab_c_get_parts(feature.Handle))
{
this.Feature = feature;
}
protected internal Vertices(Part part) :
base(MiApi.mitab_c_get_vertex_count(part.Feature.Handle, part.Index))
{
this.Part = part;
}
/// <summary>
/// Returns a double representation of this fields value for the given feature.
/// </summary>
/// <param name="feature">The feature to find the fields value for.</param>
/// <returns>A double representation of this fields value for the given feature</returns>
public double GetValueAsDouble(Feature feature)
{
return(MiApi.mitab_c_get_field_as_double(feature.Handle, this.Index));
}
/// <summary>
/// Returns a string representation of this fields value for the given feature.
/// </summary>
/// <param name="feature">The feature to find the fields value for.</param>
/// <returns>A string representation of this fields value for the given feature</returns>
public string GetValueAsString(Feature feature)
{
return(MiApi.mitab_c_get_field_as_string(feature.Handle, this.Index));
}
