public _NodeInputContext(Node Node, Context Parent)
{
this._Node = Node;
this._Parent = Parent;
}
public _NodeProbe(Node Node, Probe Source)
: base(Source)
{
this._Node = Node;
}
/// <summary>
/// Performs a collision response for two nodes.
/// </summary>
public static void CollisionResponse(Node A, Node B)
{
const double res = 0.9;
const double fri = 0.1;
const double pus = 0.4;
Point asize = A.Size;
Point bsize = B.Size;
Point tsize = asize + bsize;
Point acenter = A._Position + asize * 0.5;
Point bcenter = B._Position + bsize * 0.5;
Point diff = bcenter - acenter;
Point pen = tsize * 0.5 - new Point(Math.Abs(diff.X), Math.Abs(diff.Y));
Point vdiff = B._Velocity - A._Velocity;
if (pen.X > 0.0 && pen.Y > 0.0)
{
if (pen.X < pen.Y)
{
if (diff.X > 0.0)
{
A._Position -= new Point(pen.X * 0.5, 0.0);
B._Position += new Point(pen.X * 0.5, 0.0);
}
else
{
A._Position += new Point(pen.X * 0.5, 0.0);
B._Position -= new Point(pen.X * 0.5, 0.0);
}
A._Velocity += new Point(vdiff.X * res, vdiff.Y * fri - diff.Y * Math.Abs(vdiff.X) * pus);
B._Velocity -= new Point(vdiff.X * res, vdiff.Y * fri - diff.Y * Math.Abs(vdiff.X) * pus);
}
else
{
if (diff.Y > 0.0)
{
A._Position -= new Point(0.0, pen.Y * 0.5);
B._Position += new Point(0.0, pen.Y * 0.5);
}
else
{
A._Position += new Point(0.0, pen.Y * 0.5);
B._Position -= new Point(0.0, pen.Y * 0.5);
}
A._Velocity += new Point(vdiff.X * fri - diff.X * Math.Abs(vdiff.Y) * pus, vdiff.Y * res);
B._Velocity -= new Point(vdiff.X * fri - diff.X * Math.Abs(vdiff.Y) * pus, vdiff.Y * res);
}
}
}
/// <summary>
/// Places the given node into the world, displacing other nodes as needed.
/// </summary>
public void Spawn(Node Node)
{
this._Nodes.Add(Node);
}
/// <summary>
/// Spawns a node for the given content near or at the given location.
/// </summary>
public Node Spawn(Disposable<Content> Content, Point Location)
{
Point size;
Block block = Content.Object.CreateBlock(this._Theme);
Layout layout = block.CreateLayout(null, Node.SizeRange, out size);
Node node = new Node(this._InputContext, Content, block, layout, size, Location - size * 0.5, Point.Zero);
this.Spawn(node);
return node;
}
/// <summary>
/// Despawns a node, removing it from the world.
/// </summary>
public void Despawn(Node Node)
{
this._Nodes.Remove(Node);
}
public EndPoint(Node Node, Direction Edge, double Offset)
{
this.Node = Node;
this.Edge = Edge;
this.Offset = Offset;
}