/// <summary>
/// adds the object to the SpatialHash
/// </summary>
/// <param name="collider">Object.</param>
public void Add(IAABBF collider)
{
RectangleF bounds = collider.AABB;
Point p1 = CellCoords(bounds.x, bounds.y);
Point p2 = CellCoords(bounds.Right, bounds.Bottom);
// update our bounds to keep track of our grid size
if (!GridBounds.Contains(p1))
{
GridBounds.Union(p1);
}
if (!GridBounds.Contains(p2))
{
GridBounds.Union(p2);
}
for (var x = p1.X; x <= p2.X; x++)
{
for (var y = p1.Y; y <= p2.Y; y++)
{
// we need to create the cell if there is none
var c = CellAtPosition(x, y, true);
c.Add(collider);
}
}
}
public void Remove(IAABBF obj)
{
foreach (var list in _store.Values)
{
if (list.Contains(obj))
{
list.Remove(obj);
}
}
}
/// <summary>
/// removes the object from the SpatialHash
/// </summary>
/// <param name="collider">Collider.</param>
public void Remove(IAABBF collider)
{
RectangleF bounds = collider.AABB;
var p1 = CellCoords(bounds.x, bounds.y);
var p2 = CellCoords(bounds.Right, bounds.Bottom);
for (var x = p1.X; x <= p2.X; x++)
{
for (var y = p1.Y; y <= p2.Y; y++)
{
// the cell should always exist since this collider should be in all queryed cells
var cell = CellAtPosition(x, y);
Assert.AssertNotNull(cell, string.Format("removing Collider [{0}] from a cell that it is not present in", collider), Logger.LogLevel.Error);
if (cell != null)
{
cell.Remove(collider);
}
}
}
}
/// <summary>
/// removes the object from the SpatialHash using a brute force approach
/// </summary>
/// <param name="obj">Object.</param>
public void ForceRemove(IAABBF obj)
{
cellDict.Remove(obj);
}