public void SetSpatialFilterRect(Enyim.Collections.Envelope env)
{
currentenv = env;
List <NoteData> lst = new List <NoteData>();
spatialquery.Find(currentenv, false, ref lst);
}
internal void Extend(Envelope by)
{
X1 = Math.Min(X1, by.X1);
Y1 = Math.Min(Y1, by.Y1);
X2 = Math.Max(X2, by.X2);
Y2 = Math.Max(Y2, by.Y2);
}
public int Find(Enyim.Collections.Envelope env, bool getdata, ref List <NoteData> lst)
{
int result = 0;
var r = tree.Search(env);
if (getdata == true)
{
lst.Clear();
foreach (var item in r)
{
lst.Add(item.Data.Data);
}
result = lst.Count;
}
else
{
lstFindResult.Clear();
foreach (var item in r)
{
lstFindResult.Add(item.Data.Data);
}
result = lstFindResult.Count;
}
return(result);
}
void ReadFeature2Tree()
{
Envelope env = new Envelope();
layer.GetExtent(env, 1);
mapenv = new Enyim.Collections.Envelope(env.MinX, env.MinY, env.MaxX, env.MaxY);
env.Dispose();
// var layerdef = layer.GetLayerDefn();
// var c = layerdef.GetFieldCount();
// for (int i = 0; i < c; i++)
// {
// var fielddef = layerdef.GetFieldDefn(i);
// System.Diagnostics.Debug.Assert(fielddef != null);
//
//
// Debug.Log(fielddef.GetName());
// Debug.Log(fielddef.GetTypeName());
// Debug.Log(fielddef.GetWidth());
// }
layer.ResetReading();
Feature feat;
while ((feat = layer.GetNextFeature()) != null)
{
// var s = feat.GetFieldAsString("DLMCX");
// Debug.Log(s);
spatialquery.Insert(feat);
}
}
public List <NoteData> SpatialQuery(CPPOGREnvelope env)
{
var r = new List <NoteData>();
Enyim.Collections.Envelope e = new Enyim.Collections.Envelope(env.MinX, env.MinY, env.MaxX, env.MaxY);
spatialquery.Find(e, true, ref r);
return(r);
}
public static Rect ECEnvlope2Rect(Enyim.Collections.Envelope rc)
{
Rect r = new Rect();
r.xMin = (float)rc.X1;
r.yMin = (float)rc.Y1;
r.xMax = (float)rc.X2;
r.yMax = (float)rc.Y2;
return(r);
}
Enyim.Collections.Envelope currentenv = null; // 当前view呈现的map范围
public void Open(string fname)
{
Clear();
ds = Ogr.Open(fname, 1);
Assert.IsNotNull(ds);
Assert.IsTrue(ds.GetLayerCount() > 0);
layer = ds.GetLayerByIndex(0);
Assert.IsNotNull(layer);
spatialquery = new GisSpatialQuery();
spatialquery.Clear();
ReadFeature2Tree();
currentenv = new Enyim.Collections.Envelope();
}
public bool Insert(Feature f)
{
bool result = false;
NoteData data = new NoteData();
data.fea = f;
var geo = data.fea.GetGeometryRef();
Assert.IsNotNull(geo);
OSGeo.OGR.Envelope envogr = new OSGeo.OGR.Envelope();
geo.GetEnvelope(envogr);
Enyim.Collections.Envelope env = new Enyim.Collections.Envelope(envogr.MinX, envogr.MinY, envogr.MaxX, envogr.MaxY);
envogr.Dispose();
RTreeNode <NoteData> node = new RTreeNode <NoteData>(data, env);
tree.Insert(node, env);
result = true;
return(result);
}
public static CPPOGREnvelope ECEnvlope2CPP(Enyim.Collections.Envelope rc)
{
return(new CPPOGREnvelope(rc.X1, rc.Y1, rc.X2, rc.Y2));
}
internal bool Intersects(Envelope b)
{
return b.X1 <= X2 && b.Y1 <= Y2 && b.X2 >= X1 && b.Y2 >= Y1;
}
internal bool Contains(Envelope b)
{
return X1 <= b.X1 && Y1 <= b.Y1 && b.X2 <= X2 && b.Y2 <= Y2;
}
public RTreeNode(T data, Envelope envelope)
{
Data = data;
Envelope = envelope;
children = new Lazy <List <RTreeNode <T> > >(() => new List <RTreeNode <T> >(), LazyThreadSafetyMode.None);
}
