////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 21DEC2008 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* get all records based on given rectangle.
* @param rectGeo the boundary..
* @return a hashtable of all matched record.the key is the mapInfo ID.
*/
public Hashtable SearchMapObjectsInRect(GeoLatLngBounds rectGeo)
{
Point pt1, pt2;
pt1 = new Point(new[] {
(int)(rectGeo.X * DOUBLE_PRECISION + 0.5),
(int)(rectGeo.Y * DOUBLE_PRECISION + 0.5)
});
pt2 = new Point(new int[] {
(int)((rectGeo.X + rectGeo.Width) * DOUBLE_PRECISION + 0.5),
(int)((rectGeo.Y + rectGeo.Height) * DOUBLE_PRECISION + 0.5)
});
HyperCube h1 = new HyperCube(pt1, pt2);
Hashtable retArrayList = new Hashtable();
Point p11, p12;
for (IEnumeration e1 = _tree.Intersection(h1); e1.HasMoreElements();)
{
AbstractNode node = (AbstractNode)(e1.NextElement());
if (node.IsLeaf())
{
int index = 0;
HyperCube[] data = node.GetHyperCubes();
HyperCube cube;
for (int cubeIndex = 0; cubeIndex < data.Length; cubeIndex++)
{
cube = data[cubeIndex];
if (cube.Intersection(h1))
{
p11 = cube.GetP1();
p12 = cube.GetP2();
int mapinfoId = ((Leaf)node).GetDataPointer(index);
int mapInfoId = mapinfoId;
GeoLatLngBounds mbr = new GeoLatLngBounds();
mbr.X = p11.GetFloatCoordinate(0) / DOUBLE_PRECISION;
mbr.Y = p11.GetFloatCoordinate(1) / DOUBLE_PRECISION;
mbr.Width = ((p12.GetFloatCoordinate(0) - p11.GetFloatCoordinate(0))) / DOUBLE_PRECISION;
mbr.Height = ((p12.GetFloatCoordinate(1) - p11.GetFloatCoordinate(1))) / DOUBLE_PRECISION;
if (!retArrayList.Contains(mapInfoId))
{
retArrayList.Add(mapInfoId, mbr);
}
}
index++;
}
}
}
return(retArrayList);
}