public static PointInt Neighbor(this MyMath.PointInt p, int direction)
{
if (direction < 0 || direction > 5)
{
throw new ArgumentException();
}
switch (direction)
{
case 0:
return(p + new PointInt(0, -1));
case 1:
return(p + new PointInt(1, -1));
case 2:
return(p + new PointInt(1, 0));
case 3:
return(p + new PointInt(0, 1));
case 4:
return(p + new PointInt(-1, 1));
case 5:
return(p + new PointInt(-1, 0));
default:
return(p);
}
}
public Hole(MyMath.PointInt p)
{
inside = new Vertex(p.x, p.y);
}
public bool Equal(PointInt p)
{
return(this.x == p.x && this.y == p.y);
}
public static int Cross(PointInt p1, PointInt p2)
{
return(p1.x * p2.y - p1.y * p2.x);
}
public float Cross(PointInt p2)
{
return(Cross(this, p2));
}