public override string AsWKT()
{ // "LINESTRING (10 20, 30 40, 50 60)"
// "MULTILINESTRING ((10 10, 20 20, 10 40), (40 40, 30 30, 40 20, 30 10), (40 40, 30 30, 40 20, 30 10))"
// "POLYGON ((10 10, 20 20, 10 40), (40 40, 30 30, 40 20, 30 10), (40 40, 30 30, 40 20, 30 10))"
// "MULTIPOLYGON (((10 10, 20 20, 10 40), (40 40, 30 30, 40 20, 30 10), (40 40, 30 30, 40 20, 30 10)))"
int count = this.Polygons.Count;
if (count < 1)
{
return(null);
}
MG_Polygon p = (MG_Polygon)this.Polygons[0];
string front = "{0} ({1}";
front = String.Format(front, this.Type.ToString(), p.AsWKT_Reduced());
string m = ", {0}";
string mid = "";
for (int i = 1; i < count; i++)
{
MG_Polygon pp = (MG_Polygon)this.Polygons[i];
mid += String.Format(m, pp.AsWKT_Reduced());
}
string end = ")";
return(front + mid + end);
}
public MG_Feature(MG_Feature f)
{
this.FieldSet = new MG_FieldSet();
this.ValueSet = new MG_ValueSet();
this.Geometry = new MG_Geometry();
this.Symbol = new MG_Symbol();
for (int i = 0; i < f.GetFieldCount(); i++)
{
MG_Field field = f.GetFieldSet().GetAt(i);
MG_Field newField = new MG_Field(field);
this.FieldSet.Add(newField);
MG_Value value = f.GetValue(i);
MG_Value newValue = new MG_Value(value);
this.ValueSet.Add(newValue);
}
MG_Geometry g = f.GetGeometry();
MG_Geometry newGeom = new MG_Geometry();
switch (g.Type)
{
case MG_GeometryType.NONE:
break;
case MG_GeometryType.POINT:
newGeom = new MG_Point(g as MG_Point);
break;
case MG_GeometryType.MULTIPOINT:
newGeom = new MG_MultiPoint(g as MG_MultiPoint);
break;
case MG_GeometryType.LINESTRING:
newGeom = new MG_LineString(g as MG_LineString);
break;
case MG_GeometryType.MULTILINESTRING:
newGeom = new MG_MultiLineString(g as MG_MultiLineString);
break;
case MG_GeometryType.POLYGON:
newGeom = new MG_Polygon(g as MG_Polygon);
break;
case MG_GeometryType.MULTIPOLYGON:
newGeom = new MG_MultiPolygon(g as MG_MultiPolygon);
break;
}
this.Geometry = newGeom;
MG_Symbol newSymbol = new MG_Symbol(f.GetSymbol());
this.Symbol = newSymbol;
}
public MG_MultiPolygon(MG_MultiPolygon mp)
{
this.Type = MG_GeometryType.MULTIPOLYGON;
this.Polygons = new List <MG_Polygon>();
if (mp != null)
{
for (int i = 0; i < mp.Count(); i++)
{
MG_Polygon p = new MG_Polygon(mp.GetAt(i));
this.Polygons.Add(p);
}
}
}
public MG_Polygon(MG_Polygon p)
{
this.Type = MG_GeometryType.POLYGON;
this.LineStrings = new List <MG_LineString>();
if (p != null)
{
for (int i = 0; i < p.Count(); i++)
{
MG_LineString l = new MG_LineString(p.GetAt(i));
this.LineStrings.Add(l);
}
}
}
public MG_Polygon(MG_Polygon p)
{
this.Type = MG_GeometryType.POLYGON;
this.LineStrings = new List<MG_LineString>();
if (p != null)
{
for (int i = 0; i < p.Count(); i++)
{
MG_LineString l = new MG_LineString(p.GetAt(i));
this.LineStrings.Add(l);
}
}
}
public MG_Feature(MG_Feature f)
{
this.FieldSet = new MG_FieldSet();
this.ValueSet = new MG_ValueSet();
this.Geometry = new MG_Geometry();
this.Symbol = new MG_Symbol();
for (int i = 0; i < f.GetFieldCount();i++ )
{
MG_Field field = f.GetFieldSet().GetAt(i);
MG_Field newField = new MG_Field(field);
this.FieldSet.Add(newField);
MG_Value value = f.GetValue(i);
MG_Value newValue = new MG_Value(value);
this.ValueSet.Add(newValue);
}
MG_Geometry g = f.GetGeometry();
MG_Geometry newGeom = new MG_Geometry();
switch (g.Type)
{
case MG_GeometryType.NONE:
break;
case MG_GeometryType.POINT:
newGeom = new MG_Point(g as MG_Point);
break;
case MG_GeometryType.MULTIPOINT:
newGeom = new MG_MultiPoint(g as MG_MultiPoint);
break;
case MG_GeometryType.LINESTRING:
newGeom = new MG_LineString(g as MG_LineString);
break;
case MG_GeometryType.MULTILINESTRING:
newGeom = new MG_MultiLineString(g as MG_MultiLineString);
break;
case MG_GeometryType.POLYGON:
newGeom = new MG_Polygon(g as MG_Polygon);
break;
case MG_GeometryType.MULTIPOLYGON:
newGeom = new MG_MultiPolygon(g as MG_MultiPolygon);
break;
}
this.Geometry = newGeom;
MG_Symbol newSymbol = new MG_Symbol(f.GetSymbol());
this.Symbol = newSymbol;
}
private void testGeometry()
{
MG_Point p = new MG_Point(100, 200);
string type = p.Type.ToString();
string wkt = p.AsWKT();
string wkt_reduced = p.AsWKT_Reduced();
byte[] wkb = p.AsWKB();
MG_MultiPoint mp = new MG_MultiPoint();
for (int i = 0; i < 10; i++)
{
MG_Point pp = new MG_Point(i, i);
mp.Add(pp);
}
type = mp.Type.ToString();
wkt = mp.AsWKT();
wkt_reduced = mp.AsWKT_Reduced();
wkb = mp.AsWKB();
MG_LineString l = new MG_LineString();
for (int i = 0; i < 10; i++)
{
MG_Point pp = new MG_Point(i, i);
l.Add(pp);
}
type = l.Type.ToString();
wkt = l.AsWKT();
wkt_reduced = l.AsWKT_Reduced();
wkb = l.AsWKB();
MG_MultiLineString ml = new MG_MultiLineString();
for (int i = 0; i < 5; i++)
{
MG_LineString l2 = new MG_LineString();
for (int j = 0; j < 3; j++)
{
MG_Point pp = new MG_Point(i, j);
l2.Add(pp);
}
ml.Add(l2);
}
type = ml.Type.ToString();
wkt = ml.AsWKT();
wkt_reduced = ml.AsWKT_Reduced();
wkb = ml.AsWKB();
MG_Polygon pg = new MG_Polygon();
for (int i = 0; i < 5; i++)
{
MG_LineString l2 = new MG_LineString();
for (int j = 0; j < 3; j++)
{
MG_Point pp = new MG_Point(i, j);
l2.Add(pp);
}
pg.Add(l2);
}
type = pg.Type.ToString();
wkt = pg.AsWKT();
wkt_reduced = pg.AsWKT_Reduced();
wkb = pg.AsWKB();
}
public void Remove(MG_Polygon p)
{
this.Polygons.Remove(p);
}
public void Add(MG_Polygon p)
{
this.Polygons.Add(p);
}
public static void RenderPolygon(Graphics g, Pen pen, MG_MapView mapview, MG_Polygon polygon)
{
int countLineString = polygon.Count();
for (int i = 0; i < countLineString; i++)
{
MG_LineString lineString = polygon.GetAt(i);
int countPoint = lineString.Count();
if (countPoint < 3)
return;
Point[] points = new Point[countPoint];
for (int j = 0; j < countPoint; j++)
{
MG_Point mp = lineString.GetAt(j);
points[j] = AsPoint(mp, mapview);
}
//FillPolygon(g, brush, points);
//Pen pen = new Pen(Color.Red, 1);
DrawPolygon(g, pen, points);
}
}
public MG_ToolDrawPolygon(MG_Layer layer, MG_MapView mapview)
: base(MG_ToolType.Tool_DrawPolygon, layer, mapview)
{
this.LineString = new MG_LineString();
this.Polygon = new MG_Polygon();
}