private static void Insert(IEnumerable<Envelope> sourceData, ISpatialIndex<object> index)
{
foreach (var envelope in sourceData)
{
index.Insert(envelope, envelope);
}
}
private void Insert(IList<Envelope> sourceData, ISpatialIndex<object> index)
{
foreach (var envelope in sourceData)
{
index.Insert(envelope, envelope);
}
}
/// <summary>
/// Creates a new <c>FindOverlapsQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="closedShape">The closed shape defining the search area.</param>
/// <param name="spatialType">The type of objects to look for.</param>
internal FindOverlapsQuery(ISpatialIndex index, IPosition[] closedShape, SpatialType spatialType)
{
m_ClosedShape = new ClosedShape(closedShape);
m_Points = new List<PointFeature>(100);
m_Result = new List<ISpatialObject>(100);
// If we are looking for points or lines, locate points that overlap. Note that
// if the user does not actually want points in the result, we still do a point
// search, since it helps with the selection of lines.
if ((spatialType & SpatialType.Point)!=0 || (spatialType & SpatialType.Line)!=0)
{
index.QueryWindow(m_ClosedShape.Extent, SpatialType.Point, OnPointFound);
// Remember the points in the result if the caller wants them
if ((spatialType & SpatialType.Point)!=0)
m_Result.AddRange(m_Points.ToArray());
}
// Find lines (this automatically includes lines connected to the points we just found)
if ((spatialType & SpatialType.Line)!=0)
index.QueryWindow(m_ClosedShape.Extent, SpatialType.Line, OnLineFound);
// Find any overlapping text
if ((spatialType & SpatialType.Text)!=0)
index.QueryWindow(m_ClosedShape.Extent, SpatialType.Text, OnTextFound);
m_Result.TrimExcess();
m_Points = null;
}
private static void BenchmarkSearch(ISpatialIndex index, int rounds)
{
var query = new KnnQuery
{
Coordinate = new GeoCoordinate(52.3667, 4.900),
MaxDistance = 10000,
MaxResults = 15
};
Console.Write("Searching top {0} within {1} m from [{2}] .. ", query.MaxResults, query.MaxDistance, query.Coordinate);
var total = 0L;
var timer = new Stopwatch();
for (int i = rounds; i > 0; i--)
{
timer.Restart();
index.KnnSearch(query);
timer.Stop();
total += timer.ElapsedMilliseconds;
}
Console.WriteLine("ok ({0} ms)", total / rounds);
}
private void DoTest(ISpatialIndex<object> index, double queryEnvelopeExtent, IList<Envelope> sourceData)
{
Console.WriteLine("---------------");
Console.WriteLine("Envelope Extent: " + queryEnvelopeExtent);
int extraMatchCount = 0;
int expectedMatchCount = 0;
int actualMatchCount = 0;
int queryCount = 0;
for (double x = 0; x < CELL_EXTENT * CELLS_PER_GRID_SIDE; x += queryEnvelopeExtent)
{
for (double y = 0; y < CELL_EXTENT * CELLS_PER_GRID_SIDE; y += queryEnvelopeExtent)
{
Envelope queryEnvelope = new Envelope(x, x + queryEnvelopeExtent, y, y + queryEnvelopeExtent);
var expectedMatches = IntersectingEnvelopes(queryEnvelope, sourceData);
var actualMatches = index.Query(queryEnvelope);
Assert.IsTrue(expectedMatches.Count <= actualMatches.Count);
extraMatchCount += (actualMatches.Count - expectedMatches.Count);
expectedMatchCount += expectedMatches.Count;
actualMatchCount += actualMatches.Count;
Compare(expectedMatches, actualMatches);
queryCount++;
}
}
Console.WriteLine("Expected Matches: " + expectedMatchCount);
Console.WriteLine("Actual Matches: " + actualMatchCount);
Console.WriteLine("Extra Matches: " + extraMatchCount);
Console.WriteLine("Query Count: " + queryCount);
Console.WriteLine("Average Expected Matches: " + (expectedMatchCount/(double)queryCount));
Console.WriteLine("Average Actual Matches: " + (actualMatchCount/(double)queryCount));
Console.WriteLine("Average Extra Matches: " + (extraMatchCount/(double)queryCount));
}
/// <summary>
/// Creates a new <c>FindPointQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="point">The position of interest</param>
internal FindPointQuery(ISpatialIndex index, IPointGeometry p)
{
m_Point = p;
m_Result = null;
IWindow w = new Window(p, p);
index.QueryWindow(w, SpatialType.Point, OnQueryHit);
}
/// <summary>
/// Creates a new <c>FindPointContainerQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="point">The position you want the container for</param>
internal FindPointContainerQuery(ISpatialIndex index, IPointGeometry p)
{
m_Point = p;
m_Result = null;
IWindow w = new Window(p, p);
index.QueryWindow(w, SpatialType.Polygon, OnQueryHit);
// If we didn't get a result, but we skipped some candidates, check them now.
if (m_Result==null && m_Candidates!=null)
{
// If NONE of the polygon's islands enclose the search position, that's
// the result we want.
foreach (Polygon cand in m_Candidates)
{
Debug.Assert(cand.HasAnyIslands);
if (!cand.HasIslandEnclosing(m_Point))
{
m_Result = cand;
return;
}
}
}
}
/// <summary>
/// Creates a new <c>FindPolygonLabelQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="polygon">The polygon that needs to be associated with a label</param>
internal FindPolygonLabelQuery(ISpatialIndex index, Polygon polygon)
{
m_Polygon = polygon;
m_Result = null;
if (!polygon.HasAnyIslands)
index.QueryWindow(m_Polygon.Extent, SpatialType.Text, OnTextFound);
}
/// <summary>
/// Creates a new <c>FindPointsOnLineQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="line">The line of interest.</param>
/// <param name="wantEnds">Specify true if you want points coincident with the line ends.</param>
/// <param name="tol">The search tolerance (expected to be greater than zero).</param>
internal FindPointsOnLineQuery(ISpatialIndex index, LineGeometry line, bool wantEnds, ILength tol)
{
m_Line = line;
m_Tolerance = tol.Meters;
m_Result = new List<PointFeature>();
IWindow w = m_Line.Extent;
index.QueryWindow(w, SpatialType.Point, OnQueryHit);
}
/// <summary>
///
/// </summary>
private void BuildQuadtree()
{
_quadtree = new Quadtree <ILinearRing>();
for (int i = 0; i < _rings.Count; i++)
{
ILinearRing ring = _rings[i];
Envelope env = ring.EnvelopeInternal;
_quadtree.Insert(env, ring);
}
}
private void BuildIndex()
{
_index = new STRtree <LineString>();
for (int i = 0; i < _rings.Count; i++)
{
var ring = (LinearRing)_rings[i];
var env = ring.EnvelopeInternal;
_index.Insert(env, ring);
}
}
/// <summary>
/// Detects intersections
/// </summary>
/// <param name="index">The spatial index to search</param>
private void FindIntersections(ISpatialIndex index)
{
// Get the window of the candidate object and add on a 2mm buffer (on the ground). This is
// intended to help cover the fact that some circular arcs may be inaccurate by that much.
Window searchwin = new Window(m_Geom.Extent);
ILength dim = new Length(0.002);
searchwin.Expand(dim);
index.QueryWindow(searchwin, SpatialType.Line, OnQueryHit);
m_Result.TrimExcess();
}
/// <summary>
/// Creates a new <c>FindIntersectionsQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// <para/>
/// Use this constructor when intersecting something that has already been added to
/// the spatial index. This ensures that the line is not intersected with itself.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="line">The line feature to intersect.</param>
/// <param name="wantEndEnd">Specify true if you want end-to-end intersections in the results.</param>
internal FindIntersectionsQuery(ISpatialIndex index, LineFeature line, bool wantEndEnd)
{
if (index == null)
throw new ArgumentNullException("FindIntersectionsQuery");
m_Feature = line;
m_Geom = GetUnsectionedLineGeometry(line.LineGeometry);
m_WantEndEnd = wantEndEnd;
m_Result = new List<IntersectionResult>(100);
FindIntersections(index);
}
/// <summary>
/// Handles the event that occurs when the <see cref="Items"/> property is set on this element.
/// </summary>
/// <param name="oldItems">The old value of <see cref="Items"/>.</param>
/// <param name="newItems">The new value of <see cref="Items"/>.</param>
protected virtual void OnItemsChanged(ISpatialIndex oldItems, ISpatialIndex newItems)
{
if (oldItems != null)
{
oldItems.Changed -= Items_Changed;
}
if (newItems != null)
{
newItems.Changed += Items_Changed;
}
Items_Changed(this, EventArgs.Empty);
}
/// <summary>
/// Creates a new <c>DrawQuery</c> that refers to the specified feature type(s),
/// drawing the results of the spatial query to the specified display.
/// </summary>
/// <param name="index">The index to query</param>
/// <param name="display">The display to draw to</param>
/// <param name="style">The drawing style</param>
/// <param name="types">The type(s) of spatial feature to draw</param>
public DrawQuery(ISpatialIndex index, ISpatialDisplay display, IDrawStyle style, SpatialType types)
{
m_Display = display;
m_Style = style;
m_DoPaint = false;
Timer t = new Timer(500);
t.Elapsed += new ElapsedEventHandler(Timer_Elapsed);
t.Start();
index.QueryWindow(m_Display.Extent, types, OnQueryHit);
t.Close();
display.PaintNow();
}
/// <summary>
/// Initializes a new instance of the <see cref="CadastralFile"/> class.
/// </summary>
/// <param name="name">The name of the xml file</param>
/// <param name="data">The data that was deserialized</param>
internal CadastralFile(string name, GeoSurveyPacketData data)
{
m_Name = Path.GetFileName(name);
m_Data = data;
m_Extent = new Window(m_Data.points);
m_Points = new Dictionary <int, IPoint>(m_Data.points.Length);
IEditSpatialIndex index = new SpatialIndex();
foreach (Point p in m_Data.points)
{
index.Add(p);
m_Points.Add(p.pointNo, p);
}
foreach (Plan plan in m_Data.plans)
{
foreach (Parcel parcel in plan.parcels)
{
// Relate the parcel to it's plan
parcel.Plan = plan;
foreach (Line line in parcel.lines)
{
Debug.Assert(line.From == null && line.To == null);
// Relate the line to the parcel that it is part of
line.Parcel = parcel;
line.From = m_Points[line.fromPoint];
line.To = m_Points[line.toPoint];
if (line.centerPointSpecified)
{
line.Center = m_Points[line.centerPoint];
}
index.Add(line);
}
/*
* foreach (LinePoint lp in parcel.linePoints)
* {
* // Relate to the parcel it's referenced by
*
* // Relate the associated point
* }
*/
}
}
m_Index = index;
}
public void DistanceUnitTest()
{
Assert.Inconclusive("TODO");
ISpatialIndex target = CreateISpatialIndex(); // TODO: Initialize to an appropriate value
IGeometry geometry1 = null; // TODO: Initialize to an appropriate value
IGeometry geometry2 = null; // TODO: Initialize to an appropriate value
float expected = 0F; // TODO: Initialize to an appropriate value
float actual;
actual = target.Distance(geometry1, geometry2);
Assert.AreEqual(expected, actual);
}
public void DistanceUnitTest1()
{
Assert.Inconclusive("TODO");
ISpatialIndex target = CreateISpatialIndex(); // TODO: Initialize to an appropriate value
AGraphElement graphElement1 = null; // TODO: Initialize to an appropriate value
AGraphElement graphElement2 = null; // TODO: Initialize to an appropriate value
float expected = 0F; // TODO: Initialize to an appropriate value
float actual;
actual = target.Distance(graphElement1, graphElement2);
Assert.AreEqual(expected, actual);
}
/// <summary>
/// Creates a new <c>DrawQuery</c> that refers to the specified feature type(s),
/// drawing the results of the spatial query to the specified display.
/// </summary>
/// <param name="index">The index to query</param>
/// <param name="display">The display to draw to</param>
/// <param name="style">The drawing style</param>
/// <param name="types">The type(s) of spatial feature to draw</param>
public DrawQuery(ISpatialIndex index, ISpatialDisplay display, IDrawStyle style, SpatialType types)
{
m_Display = display;
m_Style = style;
m_DoPaint = false;
Timer t = new Timer(500);
t.Elapsed += new ElapsedEventHandler(Timer_Elapsed);
t.Start();
index.QueryWindow(m_Display.Extent, types, OnQueryHit);
t.Close();
display.PaintNow();
}
public IEnumerable <TItem> ElementsIn(Rectangle bounds)
{
if (_index == null)
{
_index = new SpatialQuadTreeIndex <TItem> {
BoundsOf = item => new Rectangle(this.GetLocation(item), this.GetSize(item)),
HasBounds = item => this.HasLocation(item) && this.HasSize(item)
};
_index.AddRange(this.changedLocations.Keys);
}
var result = _index.Query(bounds);
return(result);
}
/// <summary>
/// Creates a new <c>FindIntersectionsQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// <para/>
/// Use this constructor when intersecting something that has already been added to
/// the spatial index. This ensures that the line is not intersected with itself.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="line">The line feature to intersect.</param>
/// <param name="wantEndEnd">Specify true if you want end-to-end intersections in the results.</param>
internal FindIntersectionsQuery(ISpatialIndex index, LineFeature line, bool wantEndEnd)
{
if (index == null)
{
throw new ArgumentNullException("FindIntersectionsQuery");
}
m_Feature = line;
m_Geom = GetUnsectionedLineGeometry(line.LineGeometry);
m_WantEndEnd = wantEndEnd;
m_Result = new List <IntersectionResult>(100);
FindIntersections(index);
}
/// <summary>
/// Handles mouse-move.
/// </summary>
/// <param name="p">The new position of the mouse</param>
internal override void MouseMove(IPosition p)
{
if (m_LastPolygon == null || !m_LastPolygon.IsEnclosing(p))
{
IPointGeometry pg = PointGeometry.Create(p);
ISpatialIndex index = CadastralMapModel.Current.Index;
Polygon pol = new FindPointContainerQuery(index, pg).Result;
if (pol != null || (m_LastPolygon != null && pol == null))
{
Controller.ActiveDisplay.RestoreLastDraw();
m_LastPolygon = pol;
}
}
}
public void SearchRegionUnitTest()
{
Assert.Inconclusive("TODO");
ISpatialIndex target = CreateISpatialIndex(); // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> result = null; // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> resultExpected = null; // TODO: Initialize to an appropriate value
IMBR minimalBoundedRechtangle = null; // TODO: Initialize to an appropriate value
bool expected = false; // TODO: Initialize to an appropriate value
bool actual;
actual = target.SearchRegion(out result, minimalBoundedRechtangle);
Assert.AreEqual(resultExpected, result);
Assert.AreEqual(expected, actual);
}
public void OverlapUnitTest()
{
Assert.Inconclusive("TODO");
ISpatialIndex target = CreateISpatialIndex(); // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> result = null; // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> resultExpected = null; // TODO: Initialize to an appropriate value
AGraphElement graphElement = null; // TODO: Initialize to an appropriate value
bool expected = false; // TODO: Initialize to an appropriate value
bool actual;
actual = target.Overlap(out result, graphElement);
Assert.AreEqual(resultExpected, result);
Assert.AreEqual(expected, actual);
}
public void ContainmentUnitTest1()
{
Assert.Inconclusive("TODO");
ISpatialIndex target = CreateISpatialIndex(); // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> result = null; // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> resultExpected = null; // TODO: Initialize to an appropriate value
IGeometry geometry = null; // TODO: Initialize to an appropriate value
bool expected = false; // TODO: Initialize to an appropriate value
bool actual;
actual = target.Containment(out result, geometry);
Assert.AreEqual(resultExpected, result);
Assert.AreEqual(expected, actual);
}
private void addRandomEntries(ISpatialIndex <IExtents, BoundedInt32> rTree)
{
Random rnd = new MersenneTwister();
for (Int32 i = 0; i < 100000; i++)
{
Double xMin = rnd.NextDouble() * (rnd.Next(0, 1) == 1 ? -1 : 1) * rnd.Next();
Double xMax = rnd.NextDouble() * (rnd.Next(0, 1) == 1 ? -1 : 1) * rnd.Next();
Double yMin = rnd.NextDouble() * (rnd.Next(0, 1) == 1 ? -1 : 1) * rnd.Next();
Double yMax = rnd.NextDouble() * (rnd.Next(0, 1) == 1 ? -1 : 1) * rnd.Next();
IExtents bounds = _factories.GeoFactory.CreateExtents2D(xMin, yMin, xMax, yMax);
rTree.Insert(new BoundedInt32(i, bounds));
}
}
/// <summary>
/// Adds the features retrieved from cache to the receiver.
/// </summary>
/// <param name="processAttributes">A value indicating whether the attributes will be processed or not</param>
/// <param name="cacheAccessor">Cache accessor instance</param>
/// <param name="fr">An object that receives the retrieved features</param>
/// <param name="bounds">Rectangle that defines a query region</param>
/// <returns>Number of retrieved features</returns>
public static int FillFromCache(IFeatureCollectionCacheAccessor cacheAccessor, IFeatureReceiver fr, BoundingRectangle bounds, bool processAttributes)
{
ISpatialIndex pointsIndex = cacheAccessor.RestoreFeaturesIndex(MapAround.Mapping.FeatureType.Point);
ISpatialIndex polylinesIndex = cacheAccessor.RestoreFeaturesIndex(MapAround.Mapping.FeatureType.Polyline);
ISpatialIndex polygonsIndex = cacheAccessor.RestoreFeaturesIndex(MapAround.Mapping.FeatureType.Polygon);
BoundingRectangle b;
if (!bounds.IsEmpty())
{
b = bounds.GetBoundingRectangle();
}
else
{
b = new BoundingRectangle();
b.Join(pointsIndex.IndexedSpace);
b.Join(polylinesIndex.IndexedSpace);
b.Join(polygonsIndex.IndexedSpace);
}
List <Feature> points = new List <Feature>();
pointsIndex.QueryObjectsInRectangle(bounds, points);
List <Feature> polylines = new List <Feature>();
polylinesIndex.QueryObjectsInRectangle(bounds, polylines);
List <Feature> polygons = new List <Feature>();
polygonsIndex.QueryObjectsInRectangle(bounds, polygons);
points.ForEach(point => fr.AddFeature((Feature)point.Clone()));
polylines.ForEach(polyline => fr.AddFeature((Feature)polyline.Clone()));
polygons.ForEach(polygon => fr.AddFeature((Feature)polygon.Clone()));
if (processAttributes)
{
fr.FeatureAttributeNames.Clear();
IList <string> attributeNames = cacheAccessor.RestoreAttributeNames();
foreach (string s in attributeNames)
{
fr.FeatureAttributeNames.Add(s);
}
}
return(points.Count + polylines.Count + polygons.Count);
}
public void GetNextNeighborsUnitTest1()
{
Assert.Inconclusive("TODO");
ISpatialIndex target = CreateISpatialIndex(); // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> result = null; // TODO: Initialize to an appropriate value
ReadOnlyCollection <AGraphElement> resultExpected = null; // TODO: Initialize to an appropriate value
AGraphElement graphElement = null; // TODO: Initialize to an appropriate value
int countOfNextNeighbors = 0; // TODO: Initialize to an appropriate value
bool expected = false; // TODO: Initialize to an appropriate value
bool actual;
actual = target.GetNextNeighbors(out result, graphElement, countOfNextNeighbors);
Assert.AreEqual(resultExpected, result);
Assert.AreEqual(expected, actual);
}
/// <summary>
/// 筛选要素类中，与指定图形满足一定空间关系的要素（空间筛选时添加空间索引）
/// (参考：http://blog.csdn.net/lanpy88/article/details/7173063)
/// </summary>
/// <param name="featureClass">从中筛选要素的要素类(A)</param>
/// <param name="geometry">过滤条件图形(B)</param>
/// <param name="spatialRefEnum">空间关系类型（举例：esriSpatialRelContains表示A包含B）</param>
/// <param name="whereClause">查询条件</param>
/// <returns></returns>
public static List <IFeature> FilterFeaturesEx(this IFeatureClass featureClass, IGeometry geometry, esriSpatialRelEnum spatialRefEnum, string whereClause = "")
{
IGeometryBag geometryBag = new GeometryBagClass();
IGeometryCollection geometryCollection = (IGeometryCollection)geometryBag;
geometryBag.SpatialReference = ((IGeoDataset)featureClass).SpatialReference; //一定要给GeometryBag赋空间参考
geometryCollection.AddGeometry(geometry);
//为GeometryBag生成空间索引，以提高效率
ISpatialIndex spatialIndex = (ISpatialIndex)geometryBag;
spatialIndex.AllowIndexing = true;
spatialIndex.Invalidate();
return(FilterFeatures(featureClass, geometry, spatialRefEnum, whereClause));
}
/// <summary>
/// Selects stuff within the current limit line. This makes a private selection
/// over and above any previous selection.
/// </summary>
void SelectLimit()
{
// Nothing to do if there is no limit line.
if (m_Limit == null)
{
return;
}
// Empty out the current limit selection.
m_LimSel.Clear();
// Nothing to do if there's only one position.
if (m_Limit.Count <= 1)
{
return;
}
// If we have just 2 positions, select everything that
// intersects the line. Otherwise select inside the shape.
try
{
// Close the limit line.
m_Limit.Add(m_Limit[0]);
// Select only lines if the limit line consists of only 2 points (otherwise select
// whatever is currently visible on the active display)
SpatialType types = (m_Limit.Count == 2 ? SpatialType.Line : m_Controller.VisibleFeatureTypes);
// Make the selection.
ISpatialIndex index = CadastralMapModel.Current.Index;
List <ISpatialObject> res = new FindOverlapsQuery(index, m_Limit.ToArray(), types).Result;
m_LimSel.AddRange(res);
}
catch
{
}
finally
{
// Remove the closing point.
int lastIndex = m_Limit.Count - 1;
m_Limit.RemoveAt(lastIndex);
}
}
/// <summary>
/// Creates a new <c>FindIslandContainerQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="island">The island you want the container for</param>
internal FindIslandContainerQuery(ISpatialIndex index, Island island)
{
m_Island = island;
m_Result = null;
// Get the most easterly point in the island.
IPosition ep = m_Island.GetEastPoint();
// Shift the east point ONE MICRON further to the east, to ensure
// we don't pick up the interior of the island!
PointGeometry eg = PointGeometry.Create(ep);
m_EastPoint = new PointGeometry(eg.Easting.Microns + 1, eg.Northing.Microns);
IWindow w = new Window(m_EastPoint, m_EastPoint);
index.QueryWindow(w, SpatialType.Polygon, OnQueryHit);
}
public ShapeFile(string fileName)
{
if (String.IsNullOrEmpty(fileName))
{
throw new ArgumentNullException();
}
m_MapName = fileName;
IEditSpatialIndex index = new SpatialIndex();
ShapefileDataReader sfdr = Shapefile.CreateDataReader(fileName, new GeometryFactory());
ShapefileHeader hdr = sfdr.ShapeHeader;
Envelope ex = hdr.Bounds;
m_Extent = new Window(ex.MinX, ex.MinY, ex.MaxX, ex.MaxY);
foreach (object o in sfdr)
{
// You get back an instance of GisSharpBlog.NetTopologySuite.IO.RowStructure, but
// that's internal, so cast to the interface it implements (we'll attach this to
// the geometry we wrap).
//ICustomTypeDescriptor row = (ICustomTypeDescriptor)o;
AdhocPropertyList row = CreatePropertyList(sfdr);
NTS.Geometry geom = sfdr.Geometry;
geom.UserData = row;
List <NTS.Geometry> geoms = GetBasicGeometries(geom);
foreach (NTS.Geometry g in geoms)
{
g.UserData = row;
if (g is NTS.Point)
{
index.Add(new PointWrapper((NTS.Point)g));
}
else
{
index.Add(new GeometryWrapper(g));
}
}
}
// Don't permit any further additions
m_Index = index;
}
/// <summary>
/// Saves a spatial index containing features to the cache.
/// </summary>
/// <param name="index">Spatial index</param>
/// <param name="featureType">Type of features in index</param>
public void SaveFeaturesIndex(ISpatialIndex index, FeatureType featureType)
{
List <Feature> features = new List <Feature>();
lock (_syncRoot)
{
index.QueryObjectsInRectangle(index.IndexedSpace, features);
foreach (Feature s in features)
{
if (s.FeatureType != featureType)
{
throw new ArgumentException("Illegal feature type", "index");
}
}
AddOrReplaceIndex((ISpatialIndex)index.Clone(), featureType);
}
}
private int DoRadius(ISpatialIndex <ILineString> index)
{
{
var c = new Coordinate2D(11.343629, 48.083797);
var r = 50;
index.Radius(c, r);
}
{
var c = new Coordinate2D(11.344827, 48.083752);
var r = 10;
index.Radius(c, r);
}
{
var c = new Coordinate2D(11.344827, 48.083752);
var r = 5;
index.Radius(c, r);
}
return(0);
}
private void DoTest(ISpatialIndex <object> index, double queryEnvelopeExtent, List <Envelope> sourceData)
{
if (Verbose)
{
//System.Console.WriteLine("---------------");
//System.Console.WriteLine("Envelope Extent: " + queryEnvelopeExtent);
}
int extraMatchCount = 0;
int expectedMatchCount = 0;
int actualMatchCount = 0;
int queryCount = 0;
for (double x = 0d; x < CellExtent * CellsPerGridSide; x += queryEnvelopeExtent)
{
for (double y = 0d; y < CellExtent * CellsPerGridSide; y += queryEnvelopeExtent)
{
var queryEnvelope = new Envelope(x, x + queryEnvelopeExtent, y, y + queryEnvelopeExtent);
var expectedMatches = IntersectingEnvelopes(queryEnvelope, sourceData);
var actualMatches = index.Query(queryEnvelope);
// since index returns candidates only, it may return more than the expected value
if (expectedMatches.Count > actualMatches.Count)
{
IsSuccess = false;
}
extraMatchCount += (actualMatches.Count - expectedMatches.Count);
expectedMatchCount += expectedMatches.Count;
actualMatchCount += actualMatches.Count;
Compare(expectedMatches, actualMatches);
queryCount++;
}
}
if (Verbose)
{
//System.Console.WriteLine("Expected Matches: " + expectedMatchCount);
//System.Console.WriteLine("Actual Matches: " + actualMatchCount);
//System.Console.WriteLine("Extra Matches: " + extraMatchCount);
//System.Console.WriteLine("Query Count: " + queryCount);
//System.Console.WriteLine("Average Expected Matches: " + (expectedMatchCount/(double) queryCount));
//System.Console.WriteLine("Average Actual Matches: " + (actualMatchCount/(double) queryCount));
//System.Console.WriteLine("Average Extra Matches: " + (extraMatchCount/(double) queryCount));
}
}
private void DoTest(ISpatialIndex<object> index, double queryEnvelopeExtent, List<Envelope> sourceData)
{
if (Verbose)
{
Console.WriteLine("---------------");
Console.WriteLine("Envelope Extent: " + queryEnvelopeExtent);
}
int extraMatchCount = 0;
int expectedMatchCount = 0;
int actualMatchCount = 0;
int queryCount = 0;
for (var x = 0d; x < CellExtent*CellsPerGridSide; x += queryEnvelopeExtent)
{
for (var y = 0d; y < CellExtent*CellsPerGridSide; y += queryEnvelopeExtent)
{
var queryEnvelope = new Envelope(x, x + queryEnvelopeExtent, y, y + queryEnvelopeExtent);
var expectedMatches = IntersectingEnvelopes(queryEnvelope, sourceData);
var actualMatches = index.Query(queryEnvelope);
// since index returns candidates only, it may return more than the expected value
if (expectedMatches.Count > actualMatches.Count)
{
IsSuccess = false;
}
extraMatchCount += (actualMatches.Count - expectedMatches.Count);
expectedMatchCount += expectedMatches.Count;
actualMatchCount += actualMatches.Count;
Compare(expectedMatches, actualMatches);
queryCount++;
}
}
if (Verbose)
{
Console.WriteLine("Expected Matches: " + expectedMatchCount);
Console.WriteLine("Actual Matches: " + actualMatchCount);
Console.WriteLine("Extra Matches: " + extraMatchCount);
Console.WriteLine("Query Count: " + queryCount);
Console.WriteLine("Average Expected Matches: " + (expectedMatchCount/(double) queryCount));
Console.WriteLine("Average Actual Matches: " + (actualMatchCount/(double) queryCount));
Console.WriteLine("Average Extra Matches: " + (extraMatchCount/(double) queryCount));
}
}
public ShapeDataReader(string shapeFilePath, ISpatialIndex <ShapeLocationInFileInfo> index, IGeometryFactory geoFactory, bool buildIndexAsync)
{
m_SpatialIndex = index;
m_GeoFactory = geoFactory;
ValidateParameters(shapeFilePath);
m_ShapeReader = new ShapeReader(shapeFilePath);
if (buildIndexAsync)
{
m_CancellationTokenSrc = new CancellationTokenSource();
m_IndexCreationTask = Task.Factory.StartNew(FillSpatialIndex, m_CancellationTokenSrc.Token);
}
else
{
FillSpatialIndex();
}
m_DbfReader = new DbaseReader(Path.ChangeExtension(shapeFilePath, DBF_EXT));
}
public ShapeDataReader(string shapeFilePath, ISpatialIndex<ShapeLocationInFileInfo> index, IGeometryFactory geoFactory, bool buildIndexAsync)
{
m_SpatialIndex = index;
m_GeoFactory = geoFactory;
ValidateParameters(shapeFilePath);
m_ShapeReader = new ShapeReader(shapeFilePath);
if (buildIndexAsync)
{
m_CancellationTokenSrc = new CancellationTokenSource();
m_IndexCreationTask = Task.Factory.StartNew(FillSpatialIndex, m_CancellationTokenSrc.Token);
}
else
{
FillSpatialIndex();
}
m_DbfReader = new DbaseReader(Path.ChangeExtension(shapeFilePath, DBF_EXT));
}
public ShapeDataReader(IStreamProviderRegistry streamProviderRegistry, ISpatialIndex <ShapeLocationInFileInfo> index, IGeometryFactory geoFactory, bool buildIndexAsync)
{
m_SpatialIndex = index;
m_GeoFactory = geoFactory;
ValidateParameters();
m_ShapeReader = new ShapeReader(streamProviderRegistry);
if (buildIndexAsync)
{
m_CancellationTokenSrc = new CancellationTokenSource();
m_IndexCreationTask = Task.Factory.StartNew(FillSpatialIndex, m_CancellationTokenSrc.Token);
}
else
{
FillSpatialIndex();
}
m_DbfReader = new DbaseReader(streamProviderRegistry[StreamTypes.Data]);
}
/// <summary>
/// Handles a mouse down event
/// </summary>
/// <param name="p">The position where the click occurred</param>
/// <returns>True if the command handled the mouse down. False if it did nothing.</returns>
internal override bool LButtonDown(IPosition p)
{
// Find out what polygon we need to subdivide
IPointGeometry pg = PointGeometry.Create(p);
ISpatialIndex index = CadastralMapModel.Current.Index;
Polygon pol = new FindPointContainerQuery(index, pg).Result;
if (pol == null)
{
MessageBox.Show("Specified position does not fall inside any polygon.");
return(false);
}
PolygonSubdivisionOperation op = null;
try
{
// Form the links. Return if we didn't find any links.
PolygonSub sub = new PolygonSub(pol);
PointFeature start, end;
if (!sub.GetLink(0, out start, out end))
{
MessageBox.Show("Cannot locate any points to connect.");
return(true);
}
op = new PolygonSubdivisionOperation();
op.Execute(sub);
FinishCommand();
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
AbortCommand();
}
return(true);
}
/// <summary>
/// Creates a new <c>FindClosestQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="p">The search position.</param>
/// <param name="radius">The search tolerance (expected to be greater than zero).</param>
/// <param name="types">The type of objects to look for.</param>
internal FindClosestQuery(ISpatialIndex index, IPosition p, ILength radius, SpatialType types)
{
if (types==0)
throw new ArgumentNullException("Spatial type(s) not specified");
// If the user hasn't been specific, ensure we don't search for polygons!
SpatialType useTypes = (types==SpatialType.All ? SpatialType.Feature : types);
Debug.Assert((useTypes & SpatialType.Polygon)==0);
// It's important to round off to the nearest micron. Otherwise you might not
// get the desired results in situations where the search radius is zero.
m_Position = PositionGeometry.Create(p);
m_Radius = radius;
m_Types = types;
m_Result = null;
m_Distance = m_Radius.Meters;
// The query will actually involve a square window, not a circle.
IWindow x = new Window(m_Position, radius.Meters * 2.0);
index.QueryWindow(x, useTypes, OnQueryHit);
}
public static ClusterSet<T> CalculateClusters<T>(
ISpatialIndex<PointInfo<T>> index,
double epsilon,
int minimumPointsPerCluster)
where T : IPointData
{
var points = index.Search().ToList();
var clusters = new List<Cluster<T>>();
foreach (var p in points)
{
if (p.Visited) continue;
p.Visited = true;
var candidates = index.Search(p.Point, epsilon);
if (candidates.Count >= minimumPointsPerCluster)
{
clusters.Add(
BuildCluster(
index,
p,
candidates,
epsilon,
minimumPointsPerCluster));
}
}
return new ClusterSet<T>
{
Clusters = clusters,
UnclusteredObjects = points
.Where(p => p.Cluster == null)
.Select(p => p.Item)
.ToList(),
};
}
/// <summary>
/// Creates a new <c>FileCheckQuery</c> and executes it.
/// </summary>
/// <param name="model">The model to check</param>
/// <param name="checks">Flag bits indicating the checks of interest</param>
/// <param name="onCheckItem">Delegate to call whenever a further item is checked (null if no
/// callback is required)</param>
internal FileCheckQuery(CadastralMapModel model, CheckType checks, OnCheckItem onCheckItem)
{
if (model == null)
{
throw new ArgumentNullException();
}
m_OnCheckItem = onCheckItem;
m_Options = checks;
m_NumCheck = 0;
m_Result = new List <CheckItem>(100);
ISpatialIndex index = model.Index;
index.QueryWindow(null, SpatialType.Line, CheckLine);
index.QueryWindow(null, SpatialType.Text, CheckText);
index.QueryWindow(null, SpatialType.Polygon, CheckPolygon);
// Do any post-processing.
PostCheck(m_Result, true);
m_Result.TrimExcess();
}
/// <summary>
/// Sees whether the orientation of the new text should be altered. This
/// occurs if the auto-orient capability is enabled, and the specified
/// position is close to any visible lne.
/// </summary>
/// <param name="posn">The position to use for making the check.</param>
/// <returns></returns>
LineFeature GetOrientation(IPointGeometry posn)
{
// The ground tolerance is 2mm at the draw scale.
ISpatialDisplay display = ActiveDisplay;
double tol = 0.002 * display.MapScale;
// If we previously selected something, see if the search point
// lies within tolerance. If so, there's no change.
if (m_Orient != null)
{
double dist = m_Orient.Distance(posn).Meters;
if (dist < tol)
{
return(m_Orient);
}
}
// Get the map to find the closest line
CadastralMapModel map = CadastralMapModel.Current;
ISpatialIndex index = map.Index;
return(index.QueryClosest(posn, new Length(tol), SpatialType.Line) as LineFeature);
}
public ShapeFile(string fileName)
{
if (String.IsNullOrEmpty(fileName))
throw new ArgumentNullException();
m_MapName = fileName;
IEditSpatialIndex index = new SpatialIndex();
ShapefileDataReader sfdr = Shapefile.CreateDataReader(fileName, new GeometryFactory());
ShapefileHeader hdr = sfdr.ShapeHeader;
Envelope ex = hdr.Bounds;
m_Extent = new Window(ex.MinX, ex.MinY, ex.MaxX, ex.MaxY);
foreach (object o in sfdr)
{
// You get back an instance of GisSharpBlog.NetTopologySuite.IO.RowStructure, but
// that's internal, so cast to the interface it implements (we'll attach this to
// the geometry we wrap).
//ICustomTypeDescriptor row = (ICustomTypeDescriptor)o;
AdhocPropertyList row = CreatePropertyList(sfdr);
NTS.Geometry geom = sfdr.Geometry;
geom.UserData = row;
List<NTS.Geometry> geoms = GetBasicGeometries(geom);
foreach (NTS.Geometry g in geoms)
{
g.UserData = row;
if (g is NTS.Point)
index.Add(new PointWrapper((NTS.Point)g));
else
index.Add(new GeometryWrapper(g));
}
}
// Don't permit any further additions
m_Index = index;
}
public ShapeDataReader(IStreamProviderRegistry streamProviderRegistry , ISpatialIndex<ShapeLocationInFileInfo> index, IGeometryFactory geoFactory, bool buildIndexAsync)
{
m_SpatialIndex = index;
m_GeoFactory = geoFactory;
ValidateParameters();
m_ShapeReader = new ShapeReader(streamProviderRegistry);
if (buildIndexAsync)
{
m_CancellationTokenSrc = new CancellationTokenSource();
m_IndexCreationTask = Task.Factory.StartNew(FillSpatialIndex, m_CancellationTokenSrc.Token);
}
else
{
FillSpatialIndex();
}
m_DbfReader = new DbaseReader(streamProviderRegistry[StreamTypes.Data]);
}
/// <summary>
/// Initializes a new instance of the <see cref="MCIndexPointSnapper"/> class.
/// </summary>
/// <param name="monoChains"></param>
/// <param name="index"></param>
public MCIndexPointSnapper(IList monoChains, ISpatialIndex index)
{
this.monoChains = monoChains;
this.index = (STRtree)index;
}
/// <summary>
/// Initializes a new instance of the <see cref="McIndexPointSnapper"/> class.
/// </summary>
/// <param name="index"></param>
public McIndexPointSnapper(ISpatialIndex index)
{
_index = (StRtree)index;
}
private void BuildIndex()
{
_index = new STRtree<ILineString>();
for (int i = 0; i < _rings.Count; i++)
{
var ring = (ILinearRing)_rings[i];
var env = ring.EnvelopeInternal;
_index.Insert(env, ring);
}
}
public ShapeDataReader(IStreamProviderRegistry streamProviderRegistry, ISpatialIndex<ShapeLocationInFileInfo> index)
: this(streamProviderRegistry, index, new GeometryFactory())
{ }
public ShapeDataReader(IStreamProviderRegistry streamProviderRegistry, ISpatialIndex<ShapeLocationInFileInfo> index, IGeometryFactory geoFactory)
: this(streamProviderRegistry, index, geoFactory, true)
{ }
/// <summary>
///
/// </summary>
private void BuildQuadtree()
{
_quadtree = new Quadtree<ILinearRing>();
for (int i = 0; i < _rings.Count; i++)
{
ILinearRing ring = _rings[i];
Envelope env = ring.EnvelopeInternal;
_quadtree.Insert(env, ring);
}
}
/// <summary>
/// Creates a new <c>FindIntersectionsQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// <para/>
/// Use this constructor when intersecting with geometry that has been created ad-hoc.
/// Note that if you are looking to intersect a line feature (already part of
/// the spatial index), you should use the constructor that accepts the <c>LineFeature</c>.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="geom">The geometry to intersect.</param>
/// <param name="wantEndEnd">Specify true if you want end-to-end intersections in the results.</param>
internal FindIntersectionsQuery(ISpatialIndex index, LineGeometry geom, bool wantEndEnd)
{
m_Feature = null;
m_Geom = GetUnsectionedLineGeometry(geom);
m_WantEndEnd = wantEndEnd;
m_Result = new List<IntersectionResult>(100);
FindIntersections(index);
}
public ShapeDataReader(string shapeFilePath, ISpatialIndex<ShapeLocationInFileInfo> index, IGeometryFactory geoFactory, bool buildIndexAsync)
:this(new ShapefileStreamProviderRegistry(shapeFilePath, true, true), index, geoFactory, buildIndexAsync)
{
}
/// <summary>
/// Creates a new <c>FindPointByIdQuery</c> (and executes it). The result of the query
/// can then be obtained through the <c>Result</c> property.
/// </summary>
/// <param name="index">The spatial index to search</param>
/// <param name="key">The ID of interest.</param>
internal FindPointByIdQuery(ISpatialIndex index, string key)
{
m_Key = key;
m_Result = null;
index.QueryWindow(null, SpatialType.Point, OnQueryHit);
}
/// <summary>
/// Creates a new instance of the ShapefileShapeSource with the specified
/// shapefile as the source and supplied spatial and shape indices.
/// </summary>
/// <param name="fileName"></param>
/// <param name="spatialIndex"></param>
/// <param name="shx"></param>
protected ShapefileShapeSource(string fileName, ISpatialIndex spatialIndex, ShapefileIndexFile shx)
{
Filename = fileName;
_spatialIndex = spatialIndex;
_shx = shx;
}
/// <summary>
/// Detects intersections
/// </summary>
/// <param name="index">The spatial index to search</param>
private void FindIntersections(ISpatialIndex index)
{
// Get the window of the candidate object and add on a 2mm buffer (on the ground). This is
// intended to help cover the fact that some circular arcs may be inaccurate by that much.
Window searchwin = new Window(m_Geom.Extent);
ILength dim = new Length(0.002);
searchwin.Expand(dim);
index.QueryWindow(searchwin, SpatialType.Line, OnQueryHit);
m_Result.TrimExcess();
}
public ShapeDataReader(string shapeFilePath, ISpatialIndex<ShapeLocationInFileInfo> index, IGeometryFactory geoFactory)
: this(shapeFilePath, index, geoFactory, true)
{ }
/// <summary>
/// Creates a new instance of the LineShapefileShapeSource with the specified polygon shapefile as the source and provided indices
/// </summary>
/// <param name="fileName"></param>
/// <param name="spatialIndex"></param>
/// <param name="shx"></param>
public LineShapefileShapeSource(string fileName, ISpatialIndex spatialIndex, ShapefileIndexFile shx)
: base(fileName, spatialIndex, shx)
{
}
public ShapeDataReader(string shapeFilePath, ISpatialIndex<ShapeLocationInFileInfo> index)
: this(shapeFilePath, index, new GeometryFactory())
{ }