static void WriteFields(List <GISField> fields, BinaryWriter bw)
{
for (int fieldindex = 0; fieldindex < fields.Count; fieldindex++)
{
GISField field = fields[fieldindex];
bw.Write(TypeToInt(field.datatype));
WriteString(field.name, bw);
}
}
static List <GISFeature> ReadFeatures(BinaryReader br, SHAPETYPE ShapeType, List <GISField> Fields, int FeatureCount)
{
List <GISFeature> Features = new List <GISFeature>();
for (int featureindex = 0; featureindex < FeatureCount; featureindex++)
{
GISFeature feature = new GISFeature(null, null);
if (ShapeType == SHAPETYPE.POINT)
{
GISVertex _location = ReadVertex(br);
feature.spatialpart = new GISPoint(_location);
}
else if (ShapeType == SHAPETYPE.LINE)
{
List <GISVertex> vs = new List <GISVertex>();
int vcount = br.ReadInt32();
for (int vc = 0; vc < vcount; vc++)
{
vs.Add(ReadVertex(br));
}
feature.spatialpart = new GISLine(vs);
}
else if (ShapeType == SHAPETYPE.POLYGON)
{
List <GISVertex> vs = new List <GISVertex>();
int vcount = br.ReadInt32();
for (int vc = 0; vc < vcount; vc++)
{
vs.Add(ReadVertex(br));
}
feature.spatialpart = new GISPolygon(vs);
}
GISAttribute ga = new GISAttribute();
for (int fieldindex = 0; fieldindex < Fields.Count; fieldindex++)
{
GISField field = Fields[fieldindex];
if (field.datatype == typeof(int))
{
ga.AddValue(br.ReadInt32());
}
else if (field.datatype == typeof(double))
{
ga.AddValue(br.ReadDouble());
}
else if (field.datatype == typeof(string))
{
ga.AddValue(ReadString(br));
}
}
feature.attributepart = ga;
Features.Add(feature);
}
return(Features);
}
static void WriteFeatures(GISLayer layer, BinaryWriter bw)
{
for (int featureindex = 0; featureindex < layer.Features.Count; featureindex++)
{
GISFeature feature = layer.Features[featureindex];
if (layer.ShapeType == SHAPETYPE.POINT)
{
WriteVertex(((GISPoint)feature.spatialpart).Location, bw);
}
else if (layer.ShapeType == SHAPETYPE.LINE)
{
GISLine line = (GISLine)(feature.spatialpart);
bw.Write(line.Vertexes.Count);
for (int vc = 0; vc < line.Vertexes.Count; vc++)
{
WriteVertex(line.Vertexes[vc], bw);
}
}
else if (layer.ShapeType == SHAPETYPE.POLYGON)
{
GISPolygon polygon = (GISPolygon)(feature.spatialpart);
bw.Write(polygon.Vertexes.Count);
for (int vc = 0; vc < polygon.Vertexes.Count; vc++)
{
WriteVertex(polygon.Vertexes[vc], bw);
}
}
for (int fieldindex = 0; fieldindex < layer.Fields.Count; fieldindex++)
{
GISField field = layer.Fields[fieldindex];
int tint = TypeToInt(field.datatype);
if (tint == 1)
{
bw.Write((int)(feature.getAttributeValue(fieldindex)));
}
else if (tint == 2)
{
bw.Write(Convert.ToDouble(feature.getAttributeValue(fieldindex)));
}
else if (tint == 3)
{
WriteString(feature.getAttributeValue(fieldindex).ToString(), bw);
}
}
}
}