public void TestInit()
{
_tree = new DynamicQuadTree(new BoundingBox(new Vector3(0, 0, float.MinValue),
new Vector3(100000, 100000, float.MaxValue)));
_r = new Random();
_mockEntities = new List<IWorldEntity>();
}
private static int CheckChildrenEntityCount(DynamicQuadTree node)
{
if (!node.IsLeaf)
{
var reportedAmount = node.NumEntities;
var calculatedAmount = node.Children.Sum(c => CheckChildrenEntityCount(c));
Assert.AreEqual(reportedAmount, calculatedAmount);
return calculatedAmount;
}
return node.NumEntities;
}
// Returns child node that should contain entity,
// BASED ON POSITION ONLY
private DynamicQuadTree GetChildContaining(IWorldEntity e)
{
Contract.Requires(e != null);
Contract.Ensures(Contract.Result <DynamicQuadTree>() != null);
DynamicQuadTree node = null;
foreach (var child in childNodes)
{
if (child.Boundaries.Contains(e.Position).Equals(ContainmentType.Contains))
{
node = child;
}
}
return(node);
}
// Returns child node that should contain entity,
// BASED ON POSITION ONLY
private DynamicQuadTree GetChildContaining(IWorldEntity e)
{
Contract.Requires(e != null);
Contract.Ensures(Contract.Result <DynamicQuadTree>() != null);
DynamicQuadTree node = null;
foreach (var child in _childNodes)
{
// ReSharper disable PossibleNullReferenceException
if (child.Boundaries.Contains(e.Position).Equals(ContainmentType.Contains))
{
// ReSharper restore PossibleNullReferenceException
node = child;
}
}
return(node);
}
public void TestCleanup()
{
_tree = null;
_r = null;
_mockEntities = null;
}
private void Partition()
{
Contract.Requires(_isLeaf);
/*
*
* Min.X HalfX Max.X
* +------------+ Max.Y
* | | |
* | | |
* |------------| HalfY
* | | |
* | | |
* +------------+ Min.Y
*
* Since we are using 3d bounding boxes,
* but Quadtree itself is 2d, let's just
* use float.MinValue and float.MaxValue
* so our Contains() check are true for
* whatever height entity is in.
*
* My mother always told me i can't be an artist,
* i think she was right.
*/
var max = Boundaries.Max;
var min = Boundaries.Min;
float halfX = Boundaries.Min.X + Length / 2;
float halfY = Boundaries.Min.Y + Width / 2;
_childNodes = new DynamicQuadTree[ChildrenSize];
_childNodes[NorthEast] = new DynamicQuadTree(new BoundingBox(new Vector3(halfX,halfY,float.MinValue),
new Vector3(max.X,max.Y,float.MaxValue)));
_childNodes[SouthEast] = new DynamicQuadTree(new BoundingBox(new Vector3(halfX, min.Y, float.MinValue),
new Vector3(max.X, halfY, float.MaxValue)));
_childNodes[SouthWest] = new DynamicQuadTree(new BoundingBox(new Vector3(min.X, min.Y, float.MinValue),
new Vector3(halfX, halfY, float.MaxValue)));
_childNodes[NorthWest] = new DynamicQuadTree(new BoundingBox(new Vector3(min.X, halfY, float.MinValue),
new Vector3(halfX, max.Y, float.MaxValue)));
foreach (var n in _childNodes)
n.Parent = this;
_isLeaf = false;
foreach (var e in _bucket)
AddEntity(e);
_bucket = null;
_numEntities = 0;
foreach (var c in _childNodes)
_numEntities += c.NumEntities;
}
private void Partition()
{
Contract.Requires(isLeaf);
/*
*
* Min.X HalfX Max.X
* +------------+ Max.Y
* | | |
* | | |
* |------------| HalfY
* | | |
* | | |
* +------------+ Min.Y
*
* Since we are using 3d bounding boxes,
* but Quadtree itself is 2d, let's just
* use float.MinValue and float.MaxValue
* so our Contains() check are true for
* whatever height entity is in.
*
* My mother always told me i can't be an artist,
* i think she was right.
*/
var Max = Boundaries.Max;
var Min = Boundaries.Min;
float HalfX = Boundaries.Min.X + Length / 2;
float HalfY = Boundaries.Min.Y + Width / 2;
childNodes = new DynamicQuadTree[CHILDREN_SIZE];
childNodes[NORTH_EAST] = new DynamicQuadTree(new BoundingBox(new Vector3(HalfX, HalfY, float.MinValue),
new Vector3(Max.X, Max.Y, float.MaxValue)));
childNodes[SOUTH_EAST] = new DynamicQuadTree(new BoundingBox(new Vector3(HalfX, Min.Y, float.MinValue),
new Vector3(Max.X, HalfY, float.MaxValue)));
childNodes[SOUTH_WEST] = new DynamicQuadTree(new BoundingBox(new Vector3(Min.X, Min.Y, float.MinValue),
new Vector3(HalfX, HalfY, float.MaxValue)));
childNodes[NORTH_WEST] = new DynamicQuadTree(new BoundingBox(new Vector3(Min.X, HalfY, float.MinValue),
new Vector3(HalfX, Max.Y, float.MaxValue)));
foreach (var n in childNodes)
{
n.parent = this;
}
isLeaf = false;
foreach (var e in bucket)
{
AddEntity(e);
}
bucket = null;
numEntities = 0;
foreach (var c in childNodes)
{
numEntities += c.NumEntities;
}
}
private void Partition()
{
Contract.Requires(_isLeaf);
/*
*
* Min.X HalfX Max.X
* +------------+ Max.Y
* | | |
* | | |
* |------------| HalfY
* | | |
* | | |
* +------------+ Min.Y
*
* Since we are using 3d bounding boxes,
* but Quadtree itself is 2d, let's just
* use float.MinValue and float.MaxValue
* so our Contains() check are true for
* whatever height entity is in.
*
* My mother always told me i can't be an artist,
* i think she was right.
*/
var max = Boundaries.Max;
var min = Boundaries.Min;
float halfX = Boundaries.Min.X + Length / 2;
float halfY = Boundaries.Min.Y + Width / 2;
_childNodes = new DynamicQuadTree[ChildrenSize];
_childNodes[NorthEast] = new DynamicQuadTree(new BoundingBox(new Vector3(halfX, halfY, float.MinValue),
new Vector3(max.X, max.Y, float.MaxValue)));
_childNodes[SouthEast] = new DynamicQuadTree(new BoundingBox(new Vector3(halfX, min.Y, float.MinValue),
new Vector3(max.X, halfY, float.MaxValue)));
_childNodes[SouthWest] = new DynamicQuadTree(new BoundingBox(new Vector3(min.X, min.Y, float.MinValue),
new Vector3(halfX, halfY, float.MaxValue)));
_childNodes[NorthWest] = new DynamicQuadTree(new BoundingBox(new Vector3(min.X, halfY, float.MinValue),
new Vector3(halfX, max.Y, float.MaxValue)));
foreach (var n in _childNodes)
{
n.Parent = this;
}
_isLeaf = false;
foreach (var e in _bucket)
{
AddEntity(e);
}
_bucket = null;
_numEntities = 0;
foreach (var c in _childNodes)
{
_numEntities += c.NumEntities;
}
}
