public List<Actor> Intersect(Collidable col)
{
UpdateDirty();
return Intersect(col.Box);
}
public void Remove(Collidable col)
{
if (col.Node != null)
col.Remove();
}
public void RegisterDirty(Collidable col)
{
DirtyObjects.Add(col);
}
public void Insert(Collidable col)
{
Root.Insert(col);
}
internal bool Insert(Collidable obj)
{
++Count;
if (Children == null)
{
if (Objects.Count < Tree.MaxObjectsPerNode || Level > 12)
{
obj.Node = this;
Objects.Add(obj);
return true;
}
else
{
Divide();
var oldObjectsCount = Objects.Count;
var oldObjects = Objects.ToArray();
Count = 0;
Objects.Clear();
for (var i = 0; i < oldObjectsCount; ++i)
{
Insert(oldObjects[i]);
}
}
}
var center = obj.Center;
var extents = obj.Extents;
var right = center.X + extents.X;
var left = center.X - extents.X;
var top = center.Y + extents.Y;
var bottom = center.Y - extents.Y;
var front = center.Z + extents.Z;
var back = center.Z - extents.Z;
// in right
if (left > Center.X)
{
// in right_top
if (bottom > Center.Y)
{
// in right_top_back
if (front < Center.Z)
{
Children[RIGHT_TOP_BACK].Insert(obj);
}
// in right_top_front
else if (back > Center.Z)
{
Children[RIGHT_TOP_FRONT].Insert(obj);
}
// in both Z quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
}
// in the right_bottom
else if (top < Center.Y)
{
// in right_bottom_back
if (front < Center.Z)
{
Children[RIGHT_BOTTOM_BACK].Insert(obj);
}
// in right_bottom_front
else if (back > Center.Z)
{
Children[RIGHT_BOTTOM_FRONT].Insert(obj);
}
// in both Z quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
}
// in both right Y quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
}
// in the left X quadrant
else if (right < Center.X)
{
// in left_top
if (bottom > Center.Y)
{
// in left_top_back
if (front < Center.Z)
{
Children[LEFT_TOP_BACK].Insert(obj);
}
// in left_top_front
else if (back > Center.Z)
{
Children[LEFT_TOP_FRONT].Insert(obj);
}
// in both Z quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
}
// in the left_bottom
else if (top < Center.Y)
{
// in left_bottom_back
if (front < Center.Z)
{
Children[LEFT_BOTTOM_BACK].Insert(obj);
}
// in left_bottom_front
else if (back > Center.Z)
{
Children[LEFT_BOTTOM_FRONT].Insert(obj);
}
// in both Z quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
}
// in both left Y quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
}
// in both X quadrants
else
{
obj.Node = this;
Objects.Add(obj);
}
return false;
}
