public HashSet <ISpatialTreeNode> Query(CoordinateRectangle rectangle)
{
//for debug to see how many iterations used for a search
var i = SpatialQueryIterator.Start();
var res = new HashSet <ISpatialTreeNode>();
_root.Query(res, rectangle, InterseptResult.None, i);
//index turning
System.Diagnostics.Trace.WriteLine(string.Format("{5} Level nodes {1} {2} {3} {4}, Query iterations - {0:d}",
i.Value, NodeDimension[0], NodeDimension[1], NodeDimension[2], NodeDimension[3], typeof(TNode).Name));
return(res);
}
public HashSet <ISpatialTreeNode> Distance(Coordinate coordinate, double variance)
{
//for debug to see how many iterations used for a search
var i = SpatialQueryIterator.Start();
var res = new HashSet <ISpatialTreeNode>();
_root.Distance(res, coordinate, variance, i);
//index turning
System.Diagnostics.Trace.WriteLine(string.Format("{5} Level nodes {1} {2} {3} {4}, Distance iterations - {0:d}",
i.Value, NodeDimension[0], NodeDimension[1], NodeDimension[2], NodeDimension[3], typeof(TNode).Name));
return(res);
}
public void Distance(HashSet <ISpatialTreeNode> hashSet, Coordinate coordinate, double variance, SpatialQueryIterator i)
{
//Query elements on the map close to coordinate (indexed search)
lock (this)
{
if (!IsBottomSheet)
{
if (Sheets.HasChilds)
{
foreach (var sheet in Sheets.Values)
{
i.Next();
if (sheet.Rectangle.RectangeDistance(coordinate) <= variance)
{
sheet.Distance(hashSet, coordinate, variance, i);
}
}
}
}
else if (Content.HasChilds)
{
foreach (var node in Content.Values)
{
i.Next();
double distance = -1;
switch (node.NodeType)
{
case SpatialTreeNodeTypes.Point:
distance = node.Coordinate.Distance(coordinate);
break;
case SpatialTreeNodeTypes.Line:
distance = node.Rectangle.LineDistance(coordinate);
break;
case SpatialTreeNodeTypes.Rectangle:
distance = node.Rectangle.RectangeDistance(coordinate);
break;
case SpatialTreeNodeTypes.Poligon:
distance = node.Poligon.PoligonDistance(coordinate);
break;
}
if (distance >= 0 && distance <= variance)
{
hashSet.Add(node);
}
}
}
}
}
public void Query(HashSet <ISpatialTreeNode> hashSet, CoordinateRectangle rectangle, InterseptResult parentResult, SpatialQueryIterator i)
{
//Query elements on the map by coordinate ractengle(indexed search)
lock (this)
{
if (!IsBottomSheet)
{
if (Sheets.HasChilds)
{
foreach (var sheet in Sheets.Values)
{
var res = parentResult == InterseptResult.Supersets ? InterseptResult.Supersets : InterseptResult.None;
if (res != InterseptResult.Supersets)
{
i.Next();
res = sheet.Rectangle.RectangleContains(rectangle);
}
if (res != InterseptResult.None)
{
sheet.Query(hashSet, rectangle, res, i);
}
if (res == InterseptResult.Contains)
{
break;
}
}
}
}
else if (Content.HasChilds)
{
foreach (var node in Content.Values)
{
var res = parentResult == InterseptResult.Supersets ? InterseptResult.Supersets : InterseptResult.None;
if (res != InterseptResult.Supersets)
{
i.Next();
switch (node.NodeType)
{
case SpatialTreeNodeTypes.Point:
res = rectangle.PointContains(node.Coordinate);
break;
case SpatialTreeNodeTypes.Line:
res = rectangle.LineContains(node.Rectangle);
break;
case SpatialTreeNodeTypes.Rectangle:
res = rectangle.RectangleContains(node.Rectangle);
break;
case SpatialTreeNodeTypes.Poligon:
res = rectangle.PoligonContains(node.Poligon);
break;
}
}
if (res != InterseptResult.None)
{
hashSet.Add(node);
}
}
}
}
}
