public T ManhattanDistance(GenericPosition2D <T> p = new GenericPosition2D <T>())
{
return(Extensions.Add(
Extensions.Abs(Extensions.Subtract(x, p.x)),
Extensions.Abs(Extensions.Subtract(y, p.y))
));
}
public static GenericPosition2D <T> operator +(GenericPosition2D <T> p1, GenericPosition2D <T> p2)
{
GenericPosition2D <T> p = new GenericPosition2D <T>(p1);
p.x = Extensions.Add(p.x, p2.x);
p.y = Extensions.Add(p.y, p2.y);
return(p);
}
public static GenericPosition2D <T> operator /(GenericPosition2D <T> p1, T k)
{
GenericPosition2D <T> p = new GenericPosition2D <T>(p1);
p.x = Extensions.Divide(p.x, k);
p.y = Extensions.Divide(p.y, k);
return(p);
}
public static GenericPosition2D <T> operator *(GenericPosition2D <T> p1, T k)
{
GenericPosition2D <T> p = new GenericPosition2D <T>(p1);
p.x = Extensions.Multiply(p.x, k);
p.y = Extensions.Multiply(p.y, k);
return(p);
}
public static GenericPosition2D <T> operator -(GenericPosition2D <T> p1, T k)
{
GenericPosition2D <T> p = new GenericPosition2D <T>(p1);
p.x = Extensions.Subtract(p.x, k);
p.y = Extensions.Subtract(p.y, k);
return(p);
}
public char this[GenericPosition2D <int> p]
{
get
{
return(data[p.x, p.y]);
}
set
{
data[p.x, p.y] = value;
}
}
public Map(int w, int h, GenericPosition2D <int> p, char fill = '\0')
{
width = w;
height = h;
pos = p;
data = new char[w, h];
for (int i = 0; i < w * h; i++)
{
data[i % w, i / w] = fill;
}
}
public int CompareTo(GenericPosition2D <T> p) // Reading order
{
if (!EqualityComparer <T> .Default.Equals(y, p.y))
{
return(Comparer <T> .Default.Compare(y, p.y));
}
else
{
return(Comparer <T> .Default.Compare(x, p.x));
}
}
public Map(Map m)
{
width = m.width;
height = m.height;
pos = m.pos;
data = new char[width, height];
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
data[x, y] = m.data[x, y];
}
}
}
public void Expand(int top, int right, int bottom, int left, char fill)
{
int w = left + right + width;
int h = top + bottom + height;
GenericPosition2D <int> s = new GenericPosition2D <int>(pos.x + left, pos.y + top);
Map m = new Map(w, h, s, fill);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
m.data[x + left, y + top] = data[x, y];
}
}
width = m.width;
height = m.height;
pos = m.pos;
data = m.data;
}
// Rotates pos n steps clock-wize around center
public static GenericPosition2D <T> Rotate4Steps(GenericPosition2D <T> pos, int n, GenericPosition2D <T> center = new GenericPosition2D <T>())
{
GenericPosition2D <T> p = new GenericPosition2D <T>(pos - center);
GenericPosition2D <T> r = new GenericPosition2D <T>(p);
n = Utils.Modulo(n, 4);
if (n == 1)
{
r.x = p.y;
r.y = Extensions.Subtract(default(T), p.x);
}
else if (n == 2)
{
r.x = Extensions.Subtract(default(T), p.x);
r.y = Extensions.Subtract(default(T), p.y);
}
else if (n == 3)
{
r.x = Extensions.Subtract(default(T), p.y);
r.y = p.x;
}
return(r + center);
}
public bool Equals(GenericPosition2D <T> p)
{
return(EqualityComparer <T> .Default.Equals(x, p.x) && EqualityComparer <T> .Default.Equals(y, p.y));
}
public bool HasPosition(GenericPosition2D <int> p)
{
return(p.x >= 0 && p.x < width && p.y >= 0 && p.y < height);
}
public GenericPosition2D(GenericPosition2D <T> p)
{
x = p.x;
y = p.y;
}