public int AddProxy(ref FixtureProxy proxy)
{
int proxyID = _currID++;
proxy.ProxyId = proxyID;
AABB aabb = Fatten(ref proxy.AABB);
Element <FixtureProxy> qtnode = new Element <FixtureProxy>(proxy, aabb);
_idRegister.Add(proxyID, qtnode);
_quadTree.AddNode(qtnode);
return(proxyID);
}
/// <summary>
/// LoadContent will be called once per game and is the place to load
/// all of your content.
/// </summary>
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
Texture2D px = Content.Load <Texture2D>("pixel");
Texture2D ball = Content.Load <Texture2D>("ball");
GraphicsUtils.Load(spriteBatch, px, ball);
Objs = new List <Object>();
QT = new QuadTree <Object>(new Region(0, graphics.PreferredBackBufferWidth, 0, graphics.PreferredBackBufferHeight), 10, 10);
printTree <Object>(QT, 0);
for (int i = 0; i < 10000; i++)
{
var ob = new Object(getRandRegion());
QT.AddNode(ob);
Objs.Add(ob);
}
var start = DateTime.Now.Ticks; //time the query
for (int i = 0; i < 1000; i++)
{
QT.Query(new Region(0, 50, 0, 50));
}
var end = DateTime.Now.Ticks;
Console.WriteLine("QUERY TOOK " + (end - start).ToString() + " TICKS");
}
void CreateChildNode(ref QuadTree tree, double desiredSpeed, double angle)
{
var newPosition = new Vector2D(Math.Cos(angle) * desiredSpeed_, Math.Sin(angle) * desiredSpeed_) + position_;
var newNode = new MovementNode(newPosition, angle, desiredSpeed, goal_, depth_ + 1);
if (tree.AddNode(newNode))
{
children_.Add(newNode);
}
}
void frame_KeyUp(Element sender, KeyEventArgs e)
{
Size winSize = (Size)DefaultSettings.Settings["WindowSize"];
switch (e.InterestingKeys[0])
{
case Keys.Z:
for (int i = 0; i < 1000; i++)
{
var ob = new Object(getRandRegion(winSize));
QT.AddNode(ob);
Objs.Add(ob);
}
break;
case Keys.R:
for (int i = 0; i < 50; i++)
{
var ob = new Object(getRandRegion(winSize));
QT.AddNode(ob);
Objs.Add(ob);
}
break;
case Keys.Space:
Objs.Clear();
QT = new QuadTree <Object>(new Region(0, winSize.Width, 0, winSize.Height), 1, 100);
break;
default:
break;
}
Console.WriteLine(Objs.Count + " objects");
}
public void AddNode(NodeBase node)
{
quadTree.AddNode(node);
Invalidate();
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
this.Exit();
}
if (Mouse.GetState().LeftButton == ButtonState.Pressed && prevstateL == ButtonState.Released)
{
var x = Mouse.GetState().X;
var y = Mouse.GetState().Y;
var ob = new Object(new Region(x - 10, x + 10, y - 10, y + 10));
Objs.Add(ob);
QT.AddNode(ob);
//printTree<Object>(QT, 0);
Console.WriteLine(Objs.Count + " objects");
}
if (Mouse.GetState().RightButton == ButtonState.Pressed && prevstateR == ButtonState.Released) //down
{
qactive = true;
Objs.ForEach(n => n.Flagged = false);
query = new Region();
query.XMin = Mouse.GetState().X;
query.YMin = Mouse.GetState().Y;
}
if (Mouse.GetState().RightButton == ButtonState.Released && prevstateR == ButtonState.Pressed) //up
{
qactive = false;
query.FixBoundOrder();
var start = DateTime.Now.Ticks; //time the query
var hits = QT.Query(query);
var end = DateTime.Now.Ticks;
Console.WriteLine("QUERY TOOK " + (end - start).ToString() + " TICKS");
hits.ForEach(n => n.Flagged = true);
Console.WriteLine("selected: " + hits.Count + " objects");
}
prevstateL = Mouse.GetState().LeftButton;
prevstateR = Mouse.GetState().RightButton;
query.XMax = Mouse.GetState().X;
query.YMax = Mouse.GetState().Y;
var kcurr = Keyboard.GetState().GetPressedKeys();
foreach (var k in kcurr)
{
if (!kold.Contains(k))
{
//
//Key 'k' newly pressed down. Process here.
//
switch (k)
{
case Keys.Z:
for (int i = 0; i < 1000; i++)
{
var ob = new Object(getRandRegion());
QT.AddNode(ob);
Objs.Add(ob);
}
break;
case Keys.R:
for (int i = 0; i < 50; i++)
{
var ob = new Object(getRandRegion());
QT.AddNode(ob);
Objs.Add(ob);
}
break;
case Keys.Space:
Objs.Clear();
QT = new QuadTree <Object>(new Region(0, graphics.PreferredBackBufferWidth, 0, graphics.PreferredBackBufferHeight), 1, 100);
break;
default:
break;
}
//printTree<Object>(QT, 0);
Console.WriteLine(Objs.Count + " objects");
}
}
kold = kcurr;
base.Update(gameTime);
}
public static QuadTree<IRigidBody> GenerateQT(List<IRigidBody> bodies, int maxbucket)
{
var QT = new QuadTree<IRigidBody>(MAXSPAN, maxbucket, 10);
bodies.ForEach(b => QT.AddNode(b));
return QT;
}
