/// <summary>
/// Converts a MultiPolygon to <MultiPolygon Text> format, then Appends to it to the writer.
/// </summary>
/// <param name="multiPolygon">The MultiPolygon to process.</param>
/// <param name="level"></param>
/// <param name="writer">The output stream to Append to.</param>
protected void AppendMultiPolygonText(MultiPolygon multiPolygon, int level, StringWriter writer)
{
if (multiPolygon.isEmpty())
{
writer.Write("EMPTY");
}
else
{
int level2 = level;
bool doIndent = false;
writer.Write("(");
for (int i = 0; i < multiPolygon.getNumGeometries(); i++)
{
if (i > 0)
{
writer.Write(", ");
level2 = level + 1;
doIndent = true;
}
//AppendPolygonText((Polygon) multiPolygon.GetGeometryN(i), level2, doIndent, writer);
AppendPolygonText((Polygon)multiPolygon.getGeometryN(i), level2, doIndent, writer);
}
writer.Write(")");
}
}
/// <summary>
/// Returns the largest <b>Polygon</b> in terms of area contained in the <b>MultiPolygon</b>.
/// </summary>
/// <param name="multiPolygon">The <b>MultiPolygon</b>.</param>
/// <returns>The largest <b>Polygon</b> in terms of area contained in the <b>MultiPolygon</b>.</returns>
/// <exception cref="ArgumentException"><i>multiPolygon</i> does not contain any <b>Polygon</b> objects.</exception>
public static Polygon GetLargestPolygon(MultiPolygon multiPolygon)
{
if (multiPolygon.getNumGeometries() == 0)
{
throw new ArgumentException("MultiPolygon contains no polygons.", "multiPolygon");
}
Polygon largest = (Polygon)multiPolygon.getGeometryN(0);
for (int i = 0; i < multiPolygon.getNumGeometries(); i++)
{
if (multiPolygon.getGeometryN(i).getArea() > largest.getArea())
{
largest = (Polygon)multiPolygon.getGeometryN(i);
}
}
return(largest);
}
public void TestMultiPolygon1()
{
string wkt = "MULTIPOLYGON (((10 10, 10 20, 20 20, 20 15 , 10 10), (50 40, 50 50, 60 50, 60 40, 50 40)))";
GeometryFactory factory = new GeometryFactory();
Geometry geometry = new GeometryWKTReader(factory).Create(wkt);
MultiPolygon multiPolygon = (MultiPolygon)geometry;
//Assertion.AssertEquals("Multilinestring 1",2,multiPolygon.NumGeometries);
Geometry g = multiPolygon.getGeometryN(0);
Polygon poly1 = (Polygon)multiPolygon.getGeometryN(0);
LinearRing shell = poly1.shell;
LinearRing hole = poly1.holes[0];
Assertion.AssertEquals("MPS 1", 10.0, shell.getCoordinates()[0].x);
Assertion.AssertEquals("MPS 2", 10.0, shell.getCoordinates()[0].y);
Assertion.AssertEquals("MPS 3", 10.0, shell.getCoordinates()[1].x);
Assertion.AssertEquals("MPS 4", 20.0, shell.getCoordinates()[1].y);
Assertion.AssertEquals("MPS 5", 20.0, shell.getCoordinates()[2].y);
Assertion.AssertEquals("MPS 6", 20.0, shell.getCoordinates()[2].y);
Assertion.AssertEquals("MPS 7", 20.0, shell.getCoordinates()[3].x);
Assertion.AssertEquals("MPS 8", 15.0, shell.getCoordinates()[3].y);
Assertion.AssertEquals("MPS 9", 10.0, shell.getCoordinates()[4].x);
Assertion.AssertEquals("MPS 10", 10.0, shell.getCoordinates()[4].y);
Assertion.AssertEquals("MPS 11", 50.0, hole.getCoordinates()[0].x);
Assertion.AssertEquals("MPS 12", 40.0, hole.getCoordinates()[0].y);
Assertion.AssertEquals("MPS 13", 50.0, hole.getCoordinates()[1].x);
Assertion.AssertEquals("MPS 14", 50.0, hole.getCoordinates()[1].y);
Assertion.AssertEquals("MPS 15", 60.0, hole.getCoordinates()[2].x);
Assertion.AssertEquals("MPS 16", 50.0, hole.getCoordinates()[2].y);
Assertion.AssertEquals("MPS 17", 60.0, hole.getCoordinates()[3].x);
Assertion.AssertEquals("MPS 18", 40.0, hole.getCoordinates()[3].y);
Assertion.AssertEquals("MPS 19", 50.0, hole.getCoordinates()[4].x);
Assertion.AssertEquals("MPS 20", 40.0, hole.getCoordinates()[4].y);
string wkt2 = new GeometryWKTWriter().Write(multiPolygon);
Assertion.AssertEquals("wkt", true, Compare.WktStrings(wkt, wkt2));
}
private static Geometry Simplify(MultiPolygon multipolygon, double tolerance)
{
GeometryFactory gf = new GeometryFactory();
Polygon[] generalizedPolygons = new Polygon[multipolygon.getNumGeometries()];
for (int i = 0; i < generalizedPolygons.Length; i++)
{
Polygon polygon = (Polygon)multipolygon.getGeometryN(i);
generalizedPolygons[i] = Simplify(polygon, tolerance);
}
MultiPolygon multiPolygon = gf.createMultiPolygon(generalizedPolygons);
return(multiPolygon);
}
/// <summary>
/// Converts a MultiPolygon to <MultiPolygon Text> format, then Appends to it to the writer.
/// </summary>
/// <param name="multiPolygon">The MultiPolygon to process.</param>
/// <param name="writer">The output stream to Append to.</param>
public void AppendMultiPolygonText(MultiPolygon multiPolygon, TextWriter writer)
{
if (multiPolygon.isEmpty())
{
writer.Write("EMPTY");
}
else
{
//writer.Write("M");
for (int i = 0; i < multiPolygon.getNumGeometries(); i++)
{
/*if (i > 0 && (i<multiPolygon.GetNumGeometries()-1) )
* {
* writer.Write(", ");
* }*/
AppendPolygonText((Polygon)multiPolygon.getGeometryN(i), writer);
}
//writer.Write("Z");
}
}
private void WriteMultiPolygon(MultiPolygon mp, WKBByteOrder byteOrder)
{
// Write byte order
_writer.Write((byte)byteOrder);
// Write type
this.WriteType(mp, byteOrder);
// Get the number of polygons in this multipolygon.
int numpolygons = mp.getNumGeometries();
// Write the number of polygons.
this.Write((uint)numpolygons, byteOrder);
for (int i = 0; i < numpolygons; i++)
{
// Write each polygon.
this.WritePolygon((Polygon)mp.getGeometryN(i), byteOrder);
}
}
private int GetNumParts(Geometry geometry)
{
int numParts = 0;
if (geometry is MultiPolygon)
{
numParts = 0;
MultiPolygon multiPolygon = (MultiPolygon)geometry;
for (int i = 0; i < multiPolygon.getNumGeometries(); i++)
{
numParts = numParts + GetNumParts(multiPolygon.getGeometryN(i));
}
}
else if (geometry is Polygon)
{
numParts = ((Polygon)geometry).getNumInteriorRing() + 1;
}
else
{
throw new InvalidOperationException("Should not get here.");
}
return(numParts);
}
/// <summary>
/// Converts a MultiPolygon to <MultiPolygon Text> format, then Appends to it to the writer.
/// </summary>
/// <param name="multiPolygon">The MultiPolygon to process.</param>
/// <param name="level"></param>
/// <param name="writer">The output stream to Append to.</param>
protected void AppendMultiPolygonText(MultiPolygon multiPolygon, int level, StringWriter writer)
{
if ( multiPolygon.isEmpty() )
{
writer.Write("EMPTY");
}
else
{
int level2 = level;
bool doIndent = false;
writer.Write("(");
for (int i = 0; i < multiPolygon.getNumGeometries(); i++)
{
if (i > 0)
{
writer.Write(", ");
level2 = level + 1;
doIndent = true;
}
//AppendPolygonText((Polygon) multiPolygon.GetGeometryN(i), level2, doIndent, writer);
AppendPolygonText((Polygon) multiPolygon.getGeometryN(i), level2, doIndent, writer);
}
writer.Write(")");
}
}
private void WriteMultiPolygon(MultiPolygon mp, WKBByteOrder byteOrder)
{
// Write byte order
_writer.Write((byte)byteOrder);
// Write type
this.WriteType(mp, byteOrder);
// Get the number of polygons in this multipolygon.
int numpolygons = mp.getNumGeometries();
// Write the number of polygons.
this.Write((uint)numpolygons, byteOrder);
for (int i = 0; i < numpolygons; i++)
{
// Write each polygon.
this.WritePolygon((Polygon)mp.getGeometryN(i), byteOrder);
}
}
/// <summary>
/// Convert a JTS Geometry to a WayDataBlock list.
/// </summary>
/// <param name="geometry">
/// a geometry object which should be converted </param>
/// <returns> a list of WayBlocks which you can use to save the way. </returns>
public static IList <WayDataBlock> toWayDataBlockList(Geometry geometry)
{
IList <WayDataBlock> res = new List <WayDataBlock>();
if (geometry is MultiPolygon)
{
MultiPolygon mp = (MultiPolygon)geometry;
for (int i = 0; i < mp.NumGeometries; i++)
{
Polygon p = (Polygon)mp.getGeometryN(i);
IList <int?> outer = toCoordinateList(p.ExteriorRing);
if (outer.Count / 2 > 0)
{
IList <IList <int?> > inner = new List <IList <int?> >();
for (int j = 0; j < p.NumInteriorRing; j++)
{
IList <int?> innr = toCoordinateList(p.getInteriorRingN(j));
if (innr.Count / 2 > 0)
{
inner.Add(innr);
}
}
res.Add(new WayDataBlock(outer, inner));
}
}
}
else if (geometry is Polygon)
{
Polygon p = (Polygon)geometry;
IList <int?> outer = toCoordinateList(p.ExteriorRing);
if (outer.Count / 2 > 0)
{
IList <IList <int?> > inner = new List <IList <int?> >();
for (int i = 0; i < p.NumInteriorRing; i++)
{
IList <int?> innr = toCoordinateList(p.getInteriorRingN(i));
if (innr.Count / 2 > 0)
{
inner.Add(innr);
}
}
res.Add(new WayDataBlock(outer, inner));
}
}
else if (geometry is MultiLineString)
{
MultiLineString ml = (MultiLineString)geometry;
for (int i = 0; i < ml.NumGeometries; i++)
{
LineString l = (LineString)ml.getGeometryN(i);
IList <int?> outer = toCoordinateList(l);
if (outer.Count / 2 > 0)
{
res.Add(new WayDataBlock(outer, null));
}
}
}
else if (geometry is LinearRing || geometry is LineString)
{
IList <int?> outer = toCoordinateList(geometry);
if (outer.Count / 2 > 0)
{
res.Add(new WayDataBlock(outer, null));
}
}
else if (geometry is GeometryCollection)
{
GeometryCollection gc = (GeometryCollection)geometry;
for (int i = 0; i < gc.NumGeometries; i++)
{
IList <WayDataBlock> recursiveResult = toWayDataBlockList(gc.getGeometryN(i));
foreach (WayDataBlock wayDataBlock in recursiveResult)
{
IList <int?> outer = wayDataBlock.OuterWay;
if (outer.Count / 2 > 0)
{
res.Add(wayDataBlock);
}
}
}
}
return(res);
}
/// <summary>
/// Converts a MultiPolygon to <MultiPolygon Text> format, then Appends to it to the writer.
/// </summary>
/// <param name="multiPolygon">The MultiPolygon to process.</param>
/// <param name="writer">The output stream to Append to.</param>
public void AppendMultiPolygonText(MultiPolygon multiPolygon, TextWriter writer)
{
if (multiPolygon.isEmpty())
{
writer.Write("EMPTY");
}
else
{
//writer.Write("M");
for (int i = 0; i < multiPolygon.getNumGeometries(); i++)
{
/*if (i > 0 && (i<multiPolygon.GetNumGeometries()-1) )
{
writer.Write(", ");
}*/
AppendPolygonText((Polygon) multiPolygon.getGeometryN(i), writer);
}
//writer.Write("Z");
}
}
