public void PolygonArea()
{
Coordinate[] coords = new Coordinate[20];
Random rnd = new Random();
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[20];
for (int i = 0; i < 19; i++)
{
coords[i] = new Coordinate(center.X + Math.Cos((i * 10) * Math.PI / 10), center.Y + (i * 10) * Math.PI / 10);
double x = coords[i].X;
double y = coords[i].Y;
GisSharpBlog.NetTopologySuite.Geometries.Coordinate c = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
coordscheck[i] = c;
}
coordscheck[19] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
coords[19] = new Coordinate(coords[0].X, coords[0].Y);
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
GeoAPI.Geometries.IPolygon polygonCheck = gf.CreatePolygon(ring, null);
Polygon pg = new Polygon(coords);
double areaCheck = polygonCheck.Area;
double area = pg.Area;
Assert.AreEqual(area, areaCheck);
}
public void Multipg()
{
Random rnd = new Random();
Polygon[] pg = new Polygon[50];
GeoAPI.Geometries.IPolygon[] pgcheck = new GeoAPI.Geometries.IPolygon[50];
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
for (int i = 0; i < 50; i++)
{
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
Coordinate[] coord = new Coordinate[36];
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[36];
for (int ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
double x = coord[ii].X;
double y = coord[ii].Y;
GisSharpBlog.NetTopologySuite.Geometries.Coordinate c = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
MultiPolygon mpg = new MultiPolygon(pg);
GeoAPI.Geometries.IMultiPolygon mpgcheck = gf.CreateMultiPolygon(pgcheck);
for (int ii = 0; ii < mpg.Coordinates.Count; ii++)
{
Assert.AreEqual(mpg.Coordinates[ii].X, mpgcheck.Coordinates[ii].X);
Assert.AreEqual(mpg.Coordinates[ii].Y, mpgcheck.Coordinates[ii].Y);
}
}
public void Overlaps()
{
var rnd = new Random();
var pg = new Polygon[50];
var pgcheck = new GeoAPI.Geometries.IPolygon[50];
var gf = new NetTopologySuite.Geometries.GeometryFactory();
var center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
for (var i = 0; i < 50; i++)
{
var coord = new Coordinate[36];
var coordscheck = new GeoAPI.Geometries.Coordinate[36];
for (var ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
var x = coord[ii].X;
var y = coord[ii].Y;
var c = new GeoAPI.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GeoAPI.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
for (var t = 0; t < 49; t++)
{
var g = pg[t].Overlaps(pg[t + 1]);
var gcheck = pgcheck[t].Overlaps(pgcheck[t + 1]);
Assert.AreEqual(g, gcheck);
}
}
public void Multipg()
{
Random rnd = new Random();
Polygon[] pg = new Polygon[50];
GeoAPI.Geometries.IPolygon[] pgcheck = new GeoAPI.Geometries.IPolygon[50];
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
for (int i = 0; i < 50; i++)
{
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
Coordinate[] coord = new Coordinate[36];
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[36];
for (int ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
double x = coord[ii].X;
double y = coord[ii].Y;
GisSharpBlog.NetTopologySuite.Geometries.Coordinate c = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
MultiPolygon mpg = new MultiPolygon(pg);
GeoAPI.Geometries.IMultiPolygon mpgcheck = gf.CreateMultiPolygon(pgcheck);
for (int ii = 0; ii < mpg.Coordinates.Count; ii++)
{
Assert.AreEqual(mpg.Coordinates[ii].X, mpgcheck.Coordinates[ii].X);
Assert.AreEqual(mpg.Coordinates[ii].Y, mpgcheck.Coordinates[ii].Y);
}
}
public void Multipg()
{
var rnd = new Random();
var pg = new Polygon[50];
var pgcheck = new GeoAPI.Geometries.IPolygon[50];
var gf = new NetTopologySuite.Geometries.GeometryFactory();
for (var i = 0; i < 50; i++)
{
var center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
var coord = new Coordinate[36];
var coordscheck = new GeoAPI.Geometries.Coordinate[36];
for (var ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
var x = coord[ii].X;
var y = coord[ii].Y;
var c = new GeoAPI.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GeoAPI.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
var ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
var mpg = new MultiPolygon(pg);
var mpgcheck = gf.CreateMultiPolygon(pgcheck);
for (var ii = 0; ii < mpg.Coordinates.Count; ii++)
{
Assert.AreEqual(mpg.Coordinates[ii].X, mpgcheck.Coordinates[ii].X);
Assert.AreEqual(mpg.Coordinates[ii].Y, mpgcheck.Coordinates[ii].Y);
}
}
public void PolygonEnvelopeArea()
{
var coords = new Coordinate[20];
var rnd = new Random();
var center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
var coordscheck = new GeoAPI.Geometries.Coordinate[20];
for (var i = 0; i < 19; i++)
{
coords[i] = new Coordinate(center.X + Math.Cos((i * 10) * Math.PI / 10), center.Y + (i * 10) * Math.PI / 10);
var x = coords[i].X;
var y = coords[i].Y;
var c = new GeoAPI.Geometries.Coordinate(x, y);
coordscheck[i] = c;
}
coordscheck[19] = new GeoAPI.Geometries.Coordinate(coords[0].X, coords[0].Y);
coords[19] = new Coordinate(coords[0].X, coords[0].Y);
var gf = new NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
GeoAPI.Geometries.IPolygon pgcheck = gf.CreatePolygon(ring, null);
var pg = new Polygon(coords);
var area = pg.Envelope.Area();
AssertExt.AreEqual15(area, pgcheck.Envelope.Area);
}
public void Multipg()
{
var rnd = new Random();
var pg = new Polygon[50];
var pgcheck = new GeoAPI.Geometries.IPolygon[50];
var gf = new NetTopologySuite.Geometries.GeometryFactory();
for (var i = 0; i < 50; i++)
{
var center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
var coord = new Coordinate[36];
var coordscheck = new GeoAPI.Geometries.Coordinate[36];
for (var ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
var x = coord[ii].X;
var y = coord[ii].Y;
var c = new GeoAPI.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GeoAPI.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
var ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
var mpg = new MultiPolygon(pg);
var mpgcheck = gf.CreateMultiPolygon(pgcheck);
for (var ii = 0; ii < mpg.Coordinates.Count; ii++)
{
Assert.AreEqual(mpg.Coordinates[ii].X, mpgcheck.Coordinates[ii].X);
Assert.AreEqual(mpg.Coordinates[ii].Y, mpgcheck.Coordinates[ii].Y);
}
}
public void Overlaps()
{
Random rnd = new Random();
Polygon[] pg = new Polygon[50];
GeoAPI.Geometries.IPolygon[] pgcheck = new GeoAPI.Geometries.IPolygon[50];
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
for (int i = 0; i < 50; i++)
{
Coordinate[] coord = new Coordinate[36];
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[36];
for (int ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
double x = coord[ii].X;
double y = coord[ii].Y;
GisSharpBlog.NetTopologySuite.Geometries.Coordinate c = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
for (int t = 0; t < 49; t++)
{
bool g = pg[t].Overlaps(pg[t + 1]);
bool gcheck = pgcheck[t].Overlaps(pgcheck[t + 1]);
Assert.AreEqual(g, gcheck);
}
}
public void PolygonEnvelopeMaxMin()
{
Coordinate[] coords = new Coordinate[20];
Random rnd = new Random();
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[20];
for (int i = 0; i < 19; i++)
{
coords[i] = new Coordinate(center.X + Math.Cos((i * 10) * Math.PI / 10), center.Y + (i * 10) * Math.PI / 10);
double x = coords[i].X;
double y = coords[i].Y;
GisSharpBlog.NetTopologySuite.Geometries.Coordinate c = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
coordscheck[i] = c;
}
coordscheck[19] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coords[0].X, coords[0].Y);
coords[19] = new Coordinate(coords[0].X, coords[0].Y);
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
GeoAPI.Geometries.IPolygon pgcheck = gf.CreatePolygon(ring, null);
Polygon pg = new Polygon(coords);
AssertExt.AreEqual15(pg.Envelope.Maximum.X, pgcheck.EnvelopeInternal.MaxX);
AssertExt.AreEqual15(pg.Envelope.Maximum.Y, pgcheck.EnvelopeInternal.MaxY);
AssertExt.AreEqual15(pg.Envelope.Minimum.X, pgcheck.EnvelopeInternal.MinX);
AssertExt.AreEqual15(pg.Envelope.Minimum.Y, pgcheck.EnvelopeInternal.MinY);
}
protected override void OnRenderInternal(SharpMap.Map map, GeoAPI.Geometries.IPolygon polygon, System.Drawing.Graphics g)
{
var pt = polygon.Centroid;
g.RenderingOrigin =
System.Drawing.Point.Truncate(SharpMap.Utilities.Transform.WorldtoMap(pt.Coordinate, map));
base.OnRenderInternal(map, polygon, g);
}
protected override void OnRenderInternal(SharpMap.MapViewport map, GeoAPI.Geometries.IPolygon polygon, System.Drawing.Graphics g)
{
var pt = polygon.Centroid;
g.RenderingOrigin =
System.Drawing.Point.Truncate(map.WorldToImage(pt.Coordinate));
base.OnRenderInternal(map, polygon, g);
}
public void PolygonHoles()
{
Coordinate[] coords = new Coordinate[20];
Random rnd = new Random();
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
// Shell Coordinates
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[20];
for (int i = 0; i < 19; i++)
{
double x = center.X + Math.Cos((i * 10) * Math.PI / 10);
double y = center.Y + (i * 10) * Math.PI / 10;
coords[i] = new Coordinate(x, y);
coordscheck[i] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
}
coordscheck[19] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coords[0].X, coords[0].Y);
coords[19] = new Coordinate(coords[0].X, coords[0].Y);
// Shell Rings
LinearRing ring = new LinearRing(coords);
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.ILinearRing ringCheck = gf.CreateLinearRing(coordscheck);
// Hole Coordinates
GeoAPI.Geometries.ICoordinate[] coordsholecheck = new GeoAPI.Geometries.ICoordinate[20];
Coordinate[] coordshole = new Coordinate[20];
for (int i = 0; i < 20; i++)
{
double x = center.X + Math.Cos((i * 10) * Math.PI / 20);
double y = center.Y + (i * 10) * Math.PI / 20;
coordshole[i] = new Coordinate(x, y);
coordsholecheck[i] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
}
coordshole[19] = new Coordinate(coordshole[0].X, coordshole[0].Y);
coordsholecheck[19] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coordshole[0].X, coordshole[0].Y);
// Hole LinearRing Arrays
LinearRing hole = new LinearRing(coordshole);
ILinearRing[] holes = new ILinearRing[1];
GeoAPI.Geometries.ILinearRing holeCheck = gf.CreateLinearRing(coordsholecheck);
GeoAPI.Geometries.ILinearRing[] holescheck = new GeoAPI.Geometries.ILinearRing[1];
holes[0] = hole;
holescheck[0] = holeCheck;
Polygon pg = new Polygon(ring, holes);
GeoAPI.Geometries.IPolygon polygonCheck = gf.CreatePolygon(ringCheck, holescheck);
double areaCheck = polygonCheck.Area;
double area = pg.Area;
Assert.AreEqual(area, areaCheck);
}
private static GeoAPIMultiPolygon FromMultiPolygon(IMultiPolygon geometry, GeoAPIGeometryFactory factory, bool copyUserData)
{
var dsPolygons = new GeoAPI.Geometries.IPolygon[geometry.NumGeometries];
for (var i = 0; i < dsPolygons.Length; i++)
{
dsPolygons[i] = FromPolygon((IPolygon)geometry.GetGeometryN(i), factory, copyUserData);
}
var result = factory.CreateMultiPolygon(dsPolygons);
if (copyUserData)
{
result.UserData = geometry.UserData;
}
return(result);
}
public void Intersection()
{
var rnd = new Random();
var pg = new Polygon[50];
var pgcheck = new GeoAPI.Geometries.IPolygon[50];
var gf = new NetTopologySuite.Geometries.GeometryFactory();
var center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
for (var i = 0; i < 50; i++)
{
var coord = new Coordinate[36];
var coordscheck = new GeoAPI.Geometries.Coordinate[36];
for (var ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
var x = coord[ii].X;
var y = coord[ii].Y;
var c = new GeoAPI.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GeoAPI.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
for (var t = 0; t < 49; t++)
{
var g = pg[t].Intersection(pg[t + 1]);
var gcheck = pgcheck[t].Intersection(pgcheck[t + 1]);
for (var j = 0; j < g.Coordinates.Count; j++)
{
Assert.AreEqual(g.Coordinates[j].X, gcheck.Coordinates[j].X);
Assert.AreEqual(g.Coordinates[j].Y, gcheck.Coordinates[j].Y);
}
}
}
private void LoadParcels(List <PointD> pt, Color color, string labelname)
{
SharpMap.Map map = new SharpMap.Map();
List <GeoAPI.Geometries.Coordinate> vertices = new List <GeoAPI.Geometries.Coordinate>();
foreach (PointD i in pt)
{
GeoAPI.Geometries.Coordinate p = new GeoAPI.Geometries.Coordinate();
p.X = i.X;
p.Y = i.Y;
vertices.Add(p);
}
GeoAPI.Geometries.Coordinate l = new GeoAPI.Geometries.Coordinate();
l.X = pt[0].X;
l.Y = pt[0].Y;
vertices.Add(l);
//Collection<GeoAPI.Geometries.IGeometry> geom = new Collection<GeoAPI.Geometries.IGeometry>();
GeometryFactory gf = new NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.ILinearRing shell = gf.CreateLinearRing(vertices.ToArray());
GeoAPI.Geometries.IPolygon polygon = gf.CreatePolygon(shell, null);
SharpMap.Data.Providers.GeometryProvider geomProvider = new SharpMap.Data.Providers.GeometryProvider(polygon);
SharpMap.Layers.VectorLayer layerParcels = new SharpMap.Layers.VectorLayer("Parcels");
SharpMap.Styles.VectorStyle style = new SharpMap.Styles.VectorStyle();
style.Fill = new SolidBrush(Color.FromArgb(200, color));
style.Outline = new Pen(new SolidBrush(color));
layerParcels.Style = style;
layerParcels.Style.EnableOutline = true;
layerParcels.DataSource = geomProvider;
layerParcels.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
mapBox1.ActiveTool = SharpMap.Forms.MapBox.Tools.Pan;
var fdt = new SharpMap.Data.FeatureDataTable();
fdt.Columns.Add(new System.Data.DataColumn("id", typeof(uint)));
fdt.Columns.Add(new System.Data.DataColumn("label", typeof(string)));
var fdr = (SharpMap.Data.FeatureDataRow)fdt.NewRow();
fdr.ItemArray = new object[] { 1, labelname };
fdr.Geometry = polygon;
fdt.AddRow(fdr);
var dataprovider = new SharpMap.Data.Providers.GeometryFeatureProvider(fdt);
var ll = new SharpMap.Layers.LabelLayer("llayer");
ll.DataSource = dataprovider;
ll.LabelColumn = "label";
ll.Style.Font = new Font("Eurostile Extended", 16, FontStyle.Bold);
mapBox1.Map.Layers.Add(layerParcels);
mapBox1.Map.Layers.Add(ll);
mapBox1.Map.ZoomToExtents();
mapBox1.Refresh();
}
private static GeoAPIMultiPolygon FromMultiPolygon(IMultiPolygon geometry, GeoAPIGeometryFactory factory, bool copyUserData)
{
var dsPolygons = new GeoAPI.Geometries.IPolygon[geometry.NumGeometries];
for (var i = 0; i < dsPolygons.Length; i++)
dsPolygons[i] = FromPolygon((IPolygon)geometry.GetGeometryN(i), factory, copyUserData);
var result = factory.CreateMultiPolygon(dsPolygons);
if (copyUserData)
result.UserData = geometry.UserData;
return result;
}
public void Overlaps()
{
Random rnd = new Random();
Polygon[] pg = new Polygon[50];
GeoAPI.Geometries.IPolygon[] pgcheck = new GeoAPI.Geometries.IPolygon[50];
GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory gf = new GisSharpBlog.NetTopologySuite.Geometries.GeometryFactory();
Coordinate center = new Coordinate((rnd.NextDouble() * 360) - 180, (rnd.NextDouble() * 180) - 90);
for (int i = 0; i < 50; i++)
{
Coordinate[] coord = new Coordinate[36];
GeoAPI.Geometries.ICoordinate[] coordscheck = new GeoAPI.Geometries.ICoordinate[36];
for (int ii = 0; ii < 36; ii++)
{
coord[ii] = new Coordinate(center.X + Math.Cos((ii * 10) * Math.PI / 10), center.Y + (ii * 10) * Math.PI / 10);
double x = coord[ii].X;
double y = coord[ii].Y;
GisSharpBlog.NetTopologySuite.Geometries.Coordinate c = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(x, y);
coordscheck[ii] = c;
}
coord[35] = new Coordinate(coord[0].X, coord[0].Y);
coordscheck[35] = new GisSharpBlog.NetTopologySuite.Geometries.Coordinate(coordscheck[0].X, coordscheck[0].Y);
GeoAPI.Geometries.ILinearRing ring = gf.CreateLinearRing(coordscheck);
pgcheck[i] = gf.CreatePolygon(ring, null);
pg[i] = new Polygon(coord);
}
for (int t = 0; t < 49; t++)
{
bool g = pg[t].Overlaps(pg[t + 1]);
bool gcheck = pgcheck[t].Overlaps(pgcheck[t + 1]);
Assert.AreEqual(g, gcheck);
}
}
public static void Test()
{
string s1 = "POLYGON((7.5999034 47.5506347,7.5997595 47.5507183,7.5998959 47.5508256,7.5999759 47.5508885,7.6001195 47.550805,7.5999034 47.5506347))";
string s2 = "POLYGON((7.6003356 47.5509754,7.6001195 47.550805,7.5999759 47.5508885,7.6000322 47.5509328,7.6001926 47.551059,7.6003356 47.5509754))";
s1 = "POLYGON((7.5999034 47.5506347,7.6001195 47.550805,7.5999759 47.5508885,7.5998959 47.5508256,7.5997595 47.5507183,7.5999034 47.5506347))";
s2 = "POLYGON((7.6003356 47.5509754,7.6001926 47.551059,7.6000322 47.5509328,7.5999759 47.5508885,7.6001195 47.550805,7.6003356 47.5509754))";
// NetTopologySuite.Geometries.Implementation.CoordinateArraySequenceFactory
// GeoAPI.Geometries.IGeometryFactory geoFactory = new NetTopologySuite.Geometries.GeometryFactory();
NetTopologySuite.IO.WKTReader wr = new NetTopologySuite.IO.WKTReader();
Wgs84Coordinates[] coords1 = PolygonParsingExtensions.PolygonStringToCoordinates(s1);
Wgs84Coordinates[] coords2 = PolygonParsingExtensions.PolygonStringToCoordinates(s2);
var lr = new NetTopologySuite.Geometries.LinearRing(coords1.ToNetTopologyCoordinates());
System.Console.WriteLine(lr.IsValid);
var x = new NetTopologySuite.Geometries.Polygon(new NetTopologySuite.Geometries.LinearRing(coords1.ToNetTopologyCoordinates()));
System.Console.WriteLine(x.IsValid);
NetTopologySuite.Geometries.GeometryFactory geomFactory = new NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.IPolygon poly1 = geomFactory.CreatePolygon(coords1.ToNetTopologyCoordinates());
GeoAPI.Geometries.IPolygon poly2 = geomFactory.CreatePolygon(coords2.ToNetTopologyCoordinates());
/*
* GeoAPI.Geometries.IPolygon poly1 = (GeoAPI.Geometries.IPolygon)wr.Read(s1);
* GeoAPI.Geometries.IPolygon poly2 = (GeoAPI.Geometries.IPolygon)wr.Read(s2);
*/
poly1.SRID = 4326;
poly2.SRID = 4326;
CalculateArea2(coords1);
CalculateArea2(coords2);
System.Console.WriteLine(poly1.Area);
System.Console.WriteLine(poly2.Area);
GeoAPI.Geometries.IPolygon poly3quick = (GeoAPI.Geometries.IPolygon)poly1.Union(poly2);
System.Console.WriteLine(poly3quick.IsValid);
// https://gis.stackexchange.com/questions/209797/how-to-get-geometry-points-using-geo-api
System.Console.Write(poly1.IsValid);
System.Console.Write(poly2.IsValid);
System.Collections.Generic.List <GeoAPI.Geometries.IGeometry> lsPolygons =
new System.Collections.Generic.List <GeoAPI.Geometries.IGeometry>();
lsPolygons.Add(poly1);
lsPolygons.Add(poly2);
GeoAPI.Geometries.IGeometry ig = NetTopologySuite.Operation.Union.CascadedPolygonUnion.Union(lsPolygons);
System.Console.WriteLine(ig.GetType().FullName);
GeoAPI.Geometries.IPolygon poly3 = (GeoAPI.Geometries.IPolygon)ig;
System.Console.WriteLine(poly3);
// POLYGON ((7.5997595 47.5507183, 7.5999034 47.5506347, 7.6001195 47.550805, 7.6003356 47.5509754
// , 7.6001926 47.551059, 7.6000322 47.5509328, 7.5999759 47.5508885
// , 7.5998959 47.5508256, 7.5997595 47.5507183))
System.Console.WriteLine(poly3.Shell.Coordinates);
/*
* // GeoAPI.Geometries.IPolygon poly3 = (GeoAPI.Geometries.IPolygon)ig;
* NetTopologySuite.Geometries.MultiPolygon poly3a = (NetTopologySuite.Geometries.MultiPolygon)ig;
* GeoAPI.Geometries.IGeometry ig2 = poly3a.ConvexHull();
* System.Console.WriteLine(ig2.GetType().FullName);
*/
// GeoAPI.Geometries.IPolygon poly4 = (GeoAPI.Geometries.IPolygon)ig2;
// System.Console.WriteLine(poly4);
System.Console.WriteLine("--- Press any key to continue --- ");
System.Console.ReadKey();
} // End Sub Test
public static void TestUnion()
{
string s1 = "POLYGON((8.3038582 47.0506309,8.3038611 47.050588,8.3038772 47.0504833,8.3041581 47.0505083,8.3041532 47.0506229,8.303965 47.0506089,8.3039616 47.0506342,8.3038582 47.0506309))";
string s2 = "POLYGON((8.3041532 47.0506229,8.3041581 47.0505083,8.3042898 47.0505392,8.3042879 47.050571,8.3042854 47.0506139,8.3041532 47.0506229))";
string s3 = "POLYGON((8.3042879 47.050571,8.30442 47.05058,8.3044327 47.0507439,8.3043001 47.0507637,8.3042885 47.0506777,8.3042854 47.0506139,8.3042879 47.050571))";
string s4 = "POLYGON((8.304174 47.050784,8.3041695 47.0507507,8.3041592 47.0506835,8.3041585 47.0506448,8.3042166 47.0506438,8.3042225 47.0506777,8.3042885 47.0506777,8.3043001 47.0507637,8.304174 47.050784))";
Wgs84Coordinates[] coords1 = PolygonParsingExtensions.PolygonStringToCoordinates(s1);
Wgs84Coordinates[] coords2 = PolygonParsingExtensions.PolygonStringToCoordinates(s2);
Wgs84Coordinates[] coords3 = PolygonParsingExtensions.PolygonStringToCoordinates(s3);
Wgs84Coordinates[] coords4 = PolygonParsingExtensions.PolygonStringToCoordinates(s4);
NetTopologySuite.Geometries.GeometryFactory geomFactory = new NetTopologySuite.Geometries.GeometryFactory();
GeoAPI.Geometries.IPolygon poly1 = geomFactory.CreatePolygon(coords1.ToNetTopologyCoordinates());
GeoAPI.Geometries.IPolygon poly2 = geomFactory.CreatePolygon(coords2.ToNetTopologyCoordinates());
GeoAPI.Geometries.IPolygon poly3 = geomFactory.CreatePolygon(coords3.ToNetTopologyCoordinates());
GeoAPI.Geometries.IPolygon poly4 = geomFactory.CreatePolygon(coords4.ToNetTopologyCoordinates());
System.Collections.Generic.List <GeoAPI.Geometries.IGeometry> lsPolygons =
new System.Collections.Generic.List <GeoAPI.Geometries.IGeometry>();
lsPolygons.Add(poly1);
lsPolygons.Add(poly2);
lsPolygons.Add(poly3);
lsPolygons.Add(poly4);
GeoAPI.Geometries.IGeometry ig = NetTopologySuite.Operation.Union.CascadedPolygonUnion.Union(lsPolygons);
System.Console.WriteLine(ig.GetType().FullName);
GeoAPI.Geometries.IPolygon unionPolygon = (GeoAPI.Geometries.IPolygon)ig;
System.Console.WriteLine(poly3);
System.Console.WriteLine(unionPolygon.Shell.Coordinates);
System.Collections.Generic.List <Wgs84Coordinates> coords = new System.Collections.Generic.List <Wgs84Coordinates>();
for (int i = 0; i < unionPolygon.Shell.Coordinates.Length; ++i)
{
coords.Add(new Wgs84Coordinates(unionPolygon.Shell.Coordinates[i].X, unionPolygon.Shell.Coordinates[i].Y));
}
coords = PolygonParsingExtensions.ToCounterClockWise(coords);
// Close polygon if unclosed
if (coords[0].Latitude != coords[coords.Count - 1].Latitude || coords[0].Longitude != coords[coords.Count - 1].Longitude)
{
coords.Add(coords[0]);
}
string insertString = @"
DECLARE @GB_UID AS uniqueidentifier;
DECLARE @SO_UID AS uniqueidentifier;
SET @GB_UID = NULLIF('abc', '');
SET @SO_UID = NULLIF('', '');
DELETE FROM T_ZO_Objekt_Wgs84Polygon WHERE ZO_OBJ_WGS84_GB_UID = @GB_UID;
/*
INSERT INTO T_ZO_Objekt_Wgs84Polygon
(
ZO_OBJ_WGS84_UID
,ZO_OBJ_WGS84_GB_UID
,ZO_OBJ_WGS84_SO_UID
,ZO_OBJ_WGS84_Sort
,ZO_OBJ_WGS84_GM_Lat
,ZO_OBJ_WGS84_GM_Lng
)
*/";
for (int i = 0; i < coords.Count; ++i)
{
if (i != 0)
{
insertString += " \r\n\r\n\r\nUNION ALL \r\n\r\n";
}
insertString += $@"
SELECT
NEWID() AS ZO_OBJ_WGS84_UID
,CAST(@GB_UID AS uniqueidentifier) AS ZO_OBJ_WGS84_GB_UID
,CAST(@SO_UID AS uniqueidentifier) AS ZO_OBJ_WGS84_SO_UID
,CAST({i.ToString(System.Globalization.CultureInfo.InvariantCulture)} AS integer) + 1 AS ZO_OBJ_WGS84_Sort
,{coords[i].Latitude.ToString(System.Globalization.CultureInfo.InvariantCulture)} AS ZO_OBJ_WGS84_GM_Lat -- decimal(23, 20)
,{coords[i].Longitude.ToString(System.Globalization.CultureInfo.InvariantCulture)} AS ZO_OBJ_WGS84_GM_Lng -- decimal(23, 20) ";
}
insertString += " \r\n; \r\n\r\n";
System.Console.WriteLine(insertString);
System.Console.WriteLine("--- Press any key to continue --- ");
System.Console.ReadKey();
}
