public Face Search(Vertex vertex)
{
if (!Root.Face.Inside(vertex))
return null;
return Search(Root, vertex).Face;
}
public void Add(Vertex vertex, params Face[] faces )
{
Node node = Search(Root, vertex);
foreach (Face face in faces)
{
node.Children.Add(new Node(face));
}
}
private Node Search(Node node, Vertex vertex)
{
foreach (Node childNode in node.Children)
{
if (childNode.Face.Inside(vertex))
{
return Search(childNode, vertex);
}
}
return node;
}
public bool Inside(Vertex p)
{
int i, j = Vertices.Count - 1;
bool oddNodes = false;
for (i = 0; i < Vertices.Count; i++)
{
if (((Vertices[i].Y < p.Y && Vertices[j].Y >= p.Y) || (Vertices[j].Y < p.Y && Vertices[i].Y >= p.Y)) &&
(Vertices[i].X <= p.X || Vertices[j].X <= p.X))
oddNodes ^= Vertices[i].X +
(p.Y - Vertices[i].Y)/(Vertices[j].Y - Vertices[i].Y)*(Vertices[j].X - Vertices[i].X) <
p.X;
j = i;
}
return oddNodes;
}
public float Cross(Vertex v)
{
return X*v.Y - Y*v.X;
}
public float DistanceSquared(Vertex vertex)
{
float dx = X - vertex.X;
float dy = Y - vertex.Y;
return dx*dx + dy*dy;
}
public float ManhattanDistance(Vertex vertex) => Convert.ToSingle(Math.Abs(X - vertex.X) + Math.Abs(Y - vertex.Y));
public float Distance(Vertex vertex) => Convert.ToSingle(Math.Sqrt(DistanceSquared(vertex)));
public bool Equals(Vertex v)
{
return this.X == v.X && this.Y == v.Y;
}
public Vertex(Vertex v)
{
X = v.X;
Y = v.Y;
}
public static float Distance(Vertex v1, Vertex v2)
{
return Convert.ToSingle(Math.Sqrt((v2.X - v1.X)*(v2.X - v1.X) + (v2.Y - v1.Y)*(v2.Y - v1.Y)));
}
public static float Slope(Vertex v1, Vertex v2)
{
float value = (v2.Y - v1.Y)/(v2.X - v1.X);
return value;
}
public static Vertex Midpoint(Vertex v1, Vertex v2)
{
float mx = v1.X/2 + v2.X/2;
float my = v1.Y/2 + v2.Y/2;
return new Vertex(mx, my);
}
public bool Contains(Vertex vertex)
{
return Vertices.Contains(vertex);
}
public Edge(Vertex v1, Vertex v2)
{
V1 = v1;
V2 = v2;
}
